Pub Date : 2023-01-10DOI: 10.36348/sijcms.2023.v06i01.002
Uddin, M. H, Haque, M. M
, Page no - | ABSTRACT | PDF | FULL TEXT | e-PUB Background: The development of innovative eco-sustainable bio-nano-composites materials based on cellulose nanomaterials obtained from agricultural waste such as rapeseed plant straw and polymeric materials with improved properties. At first, cellulose was extracted from rapeseed plant straw and cellulosic and no cellulosic materials were estimated. It was found that the rapeseed plant straw contained about 43.48 wt.% cellulosic materials and 56.52 wt.% no cellulosic materials. It was also found that the rapeseed plant straw content about 34.84 wt.% α- cellulose. Then, nano-cellulose was prepared by acid hydrolysis of α -cellulose obtained from rapeseed plant straw. Poly vinyl acetate (PVAc) was prepared by soap free emulsion polymerization of vinyl monomer. Natural rubber (NR) collected as latex was oxidized by KMnO4. Blends of NR and oxidized NR with PVAc of different compositions such as NR60/PVAc40, NR40/PVAc60, ONR60/PVAc40, ONR40/PVAc60 were prepared by mixing NR latex and PVAc emulsion and followed by drying in an oven at 60°C. Composites of NR60/PVAc40 and ONR60/PVAc40 reinforced nano-cellulose (NC) were also prepared in similar way. The blends and composites were then characterized by FTIR, SEM, and Tensile test (TS). FTIR analysis confirmed the oxidation of NR and shown the variation of the functional groups in the blends and composites compared with the FTIR spectrum of NR, ONR and PVAc. SEM study exhibited that the nano-cellulose were dispersed within NR/PVAc and ONR/PVAc blends matrices with a little agglomeration. The tensile test results showed that the strength in composites was increased due to the reinforcing effect of nano-cellulose (NC). Objectives: The aim of this study is to assess the Preparation and characterization of binary blends of NR and oxidized NR with PVAc. Methods: This is an observational study. The study used to be carried out in the admitted patient’s Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia-7003, Bangladesh. The duration of the period from Data was entered in MS Excel and Statistical analysis was done using SPSS trial version. Results: This study shows that the according to Constituent, Cellulose was 43.4822%, Alpha-Cellulose were 34.8427% and Cellulose were 8.6395%. And according to Source, Rice Straw were 32.15% %, Sugarcane were 41-43%, Rye Straw were 31.8-42.64%, Corn Stalks were 29.80% and Wheat Straw were 34-40%. Conclusion: Novel eco-friendly bio-nano-composites substances primarily based on renewable and sustainable assets namely natural rubber (NR) and nano-cellulose received from rapeseed plant straw as properly as poly vinyl acetate (PVAc) have been developed. In order to enhance the interfacial interactions amongst the composite factors such as NR, PVAc and NC, oxidation of the NR latex was once carried out by way of KMnO4 before blending mixing with PVAc emulsion and NC suspension.
{"title":"Preparation and Characterization of Cellulose Nanoparticles from Agricultural Wastes and Their Application in Polymer Composites","authors":"Uddin, M. H, Haque, M. M","doi":"10.36348/sijcms.2023.v06i01.002","DOIUrl":"https://doi.org/10.36348/sijcms.2023.v06i01.002","url":null,"abstract":", Page no - | ABSTRACT | PDF | FULL TEXT | e-PUB Background: The development of innovative eco-sustainable bio-nano-composites materials based on cellulose nanomaterials obtained from agricultural waste such as rapeseed plant straw and polymeric materials with improved properties. At first, cellulose was extracted from rapeseed plant straw and cellulosic and no cellulosic materials were estimated. It was found that the rapeseed plant straw contained about 43.48 wt.% cellulosic materials and 56.52 wt.% no cellulosic materials. It was also found that the rapeseed plant straw content about 34.84 wt.% α- cellulose. Then, nano-cellulose was prepared by acid hydrolysis of α -cellulose obtained from rapeseed plant straw. Poly vinyl acetate (PVAc) was prepared by soap free emulsion polymerization of vinyl monomer. Natural rubber (NR) collected as latex was oxidized by KMnO4. Blends of NR and oxidized NR with PVAc of different compositions such as NR60/PVAc40, NR40/PVAc60, ONR60/PVAc40, ONR40/PVAc60 were prepared by mixing NR latex and PVAc emulsion and followed by drying in an oven at 60°C. Composites of NR60/PVAc40 and ONR60/PVAc40 reinforced nano-cellulose (NC) were also prepared in similar way. The blends and composites were then characterized by FTIR, SEM, and Tensile test (TS). FTIR analysis confirmed the oxidation of NR and shown the variation of the functional groups in the blends and composites compared with the FTIR spectrum of NR, ONR and PVAc. SEM study exhibited that the nano-cellulose were dispersed within NR/PVAc and ONR/PVAc blends matrices with a little agglomeration. The tensile test results showed that the strength in composites was increased due to the reinforcing effect of nano-cellulose (NC). Objectives: The aim of this study is to assess the Preparation and characterization of binary blends of NR and oxidized NR with PVAc. Methods: This is an observational study. The study used to be carried out in the admitted patient’s Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia-7003, Bangladesh. The duration of the period from Data was entered in MS Excel and Statistical analysis was done using SPSS trial version. Results: This study shows that the according to Constituent, Cellulose was 43.4822%, Alpha-Cellulose were 34.8427% and Cellulose were 8.6395%. And according to Source, Rice Straw were 32.15% %, Sugarcane were 41-43%, Rye Straw were 31.8-42.64%, Corn Stalks were 29.80% and Wheat Straw were 34-40%. Conclusion: Novel eco-friendly bio-nano-composites substances primarily based on renewable and sustainable assets namely natural rubber (NR) and nano-cellulose received from rapeseed plant straw as properly as poly vinyl acetate (PVAc) have been developed. In order to enhance the interfacial interactions amongst the composite factors such as NR, PVAc and NC, oxidation of the NR latex was once carried out by way of KMnO4 before blending mixing with PVAc emulsion and NC suspension.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133873636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-08DOI: 10.36348/sijcms.2023.v06i01.001
M. B. Hussein, M. M. Mohammed, Y. Sulfab
Schiff bases are regarded as “privileged ligands” due to their capability to form complexes with a wide range of transition metal ions yielding stable and intensely colored metal complexes. In this study, equimolar amounts of 4-methyl-5-imidazolecarboxaldehyde and thiosemicarbazide were combined and the Schiff base 4-methyl-5-imidazolecarboxaldehyde thiosemicarbazone was prepared as a new bidentate complexing agent. The synthesized ligand was reacted with palladium (II) and platinum (II) ions yielding air-stable complexes. For characterization purpose, mass spectra and x-ray analysis of the ligand and infrared spectra, electronic spectra, thermal analysis, proton nuclear magnetic resonance and 13-carbon nuclear magnetic resonance spectra studies were carried out on the obtained ligand and its complexes. The characterization data showed that the ligand acts as a bidentate coordinate to the metal ions through azomethine nitrogen and sulfur atom. An in vitro antimicrobial investigation was also carried out for the free ligand and its metal complexes against four bacteria; Bacillus cereus, Staphylococcus aureus (Gram-positive), Escherichia coli and Salmonella typhimurium (Gram-negative) and one Fungi; Candida albicans. The results showed that the antimicrobial activity of the prepared complexes showed higher activity than the free ligand.
{"title":"Synthesis, Characterization And Antimicrobial Study of Pd(II) and Pt(II) complexes of 4-methyl-5-Imidazolecarboxaldehyde Thiosemicarbazone","authors":"M. B. Hussein, M. M. Mohammed, Y. Sulfab","doi":"10.36348/sijcms.2023.v06i01.001","DOIUrl":"https://doi.org/10.36348/sijcms.2023.v06i01.001","url":null,"abstract":"Schiff bases are regarded as “privileged ligands” due to their capability to form complexes with a wide range of transition metal ions yielding stable and intensely colored metal complexes. In this study, equimolar amounts of 4-methyl-5-imidazolecarboxaldehyde and thiosemicarbazide were combined and the Schiff base 4-methyl-5-imidazolecarboxaldehyde thiosemicarbazone was prepared as a new bidentate complexing agent. The synthesized ligand was reacted with palladium (II) and platinum (II) ions yielding air-stable complexes. For characterization purpose, mass spectra and x-ray analysis of the ligand and infrared spectra, electronic spectra, thermal analysis, proton nuclear magnetic resonance and 13-carbon nuclear magnetic resonance spectra studies were carried out on the obtained ligand and its complexes. The characterization data showed that the ligand acts as a bidentate coordinate to the metal ions through azomethine nitrogen and sulfur atom. An in vitro antimicrobial investigation was also carried out for the free ligand and its metal complexes against four bacteria; Bacillus cereus, Staphylococcus aureus (Gram-positive), Escherichia coli and Salmonella typhimurium (Gram-negative) and one Fungi; Candida albicans. The results showed that the antimicrobial activity of the prepared complexes showed higher activity than the free ligand.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127417046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-15DOI: 10.36348/sijcms.2022.v05i10.003
S. B, C. R, Chethan G Rao
The current work focuses on the hand lay-up method for creating epoxy composites reinforced with S-glass fiber (Sf), carbon fiber (Cf), and E-glass fiber (Ef). The mechanical, physical, and morphological characteristics of the produced composites in various combinations were studied and compared. Mechanical tests revealed that the placing of the S-glass fiber in a specific combination in the hybrid system of the material improves tensile (206 - 227 MPa), flexural strength (289 - 364 MPa), Izod impact strength (423.36 - 466.19 J/m), Charpy impact strength (49.77 - 61.76 KJ/m2), Shore D Hardness (74 – 91) and density (1.23 –1.47 g/cm3). The trends for mechanical characteristics were validated by examining at the fiber-matrix interface, fiber pull-out, matrix fractures, and fiber deboning in the microstructure and fractured surface morphology of the created hybrid materials. Overall, it can be inferred from the findings analysis that by reinforcing S-glass fiber in epoxy matrix with in various fiber orientations significantly enhanced the properties of the generated hybrid composite materials. Thus, S-glass fiber with excellent strength properties, like other synthetic fibers, might be considered a good reinforcing material. The hybrid system and may be used for diverse applications in the area of automobile parts manufacturing that requires high mechanical resistance.
{"title":"Study on Mechanical Properties of Synthetic Fibers Reinforced Epoxy Hybrid Composites for Automobile Application","authors":"S. B, C. R, Chethan G Rao","doi":"10.36348/sijcms.2022.v05i10.003","DOIUrl":"https://doi.org/10.36348/sijcms.2022.v05i10.003","url":null,"abstract":"The current work focuses on the hand lay-up method for creating epoxy composites reinforced with S-glass fiber (Sf), carbon fiber (Cf), and E-glass fiber (Ef). The mechanical, physical, and morphological characteristics of the produced composites in various combinations were studied and compared. Mechanical tests revealed that the placing of the S-glass fiber in a specific combination in the hybrid system of the material improves tensile (206 - 227 MPa), flexural strength (289 - 364 MPa), Izod impact strength (423.36 - 466.19 J/m), Charpy impact strength (49.77 - 61.76 KJ/m2), Shore D Hardness (74 – 91) and density (1.23 –1.47 g/cm3). The trends for mechanical characteristics were validated by examining at the fiber-matrix interface, fiber pull-out, matrix fractures, and fiber deboning in the microstructure and fractured surface morphology of the created hybrid materials. Overall, it can be inferred from the findings analysis that by reinforcing S-glass fiber in epoxy matrix with in various fiber orientations significantly enhanced the properties of the generated hybrid composite materials. Thus, S-glass fiber with excellent strength properties, like other synthetic fibers, might be considered a good reinforcing material. The hybrid system and may be used for diverse applications in the area of automobile parts manufacturing that requires high mechanical resistance.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129080307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-04DOI: 10.36348/sijcms.2022.v05i10.002
D. Starokadomsky, M. Reshetnyk
A practically important parameters of strength and chemical resistance of polyepoxide based on resin-analogue ED-20 with PEPA hardener, filled with microdispersed powders of Si, Zr, Cr, Nb, Ti, Mo carbides, have been experimentally studied in this article. The microstructure of the composites is characterized by a relatively uniform dense distribution of filler agglomerates, which can be seen in the example of compositions with 50 wt% TiC and ZrC. The absence of a significant effect of carbides on the temperature ranges of oxidative degradation of composites was established. Swelling method established that filling can radically increase the resistance of composites to acetone organic solvents. At the same time, resistance in an acidic environment is noticeably reduced (for example, nitric acid). It was found that the introduction of 50 wt% carbide fillers gives a significant increase in the strength and modulus of elasticity during compression of the composites. There is also a decrease in shrinkage and an increase in adhesion to steel (with normal tearing).
{"title":"Restorative Epoxy-Composite Materials with Micro-Nano-Dispersed Carbide Fillers (Si, Ti, Zr, Cr, Mo and Nb-carbides)","authors":"D. Starokadomsky, M. Reshetnyk","doi":"10.36348/sijcms.2022.v05i10.002","DOIUrl":"https://doi.org/10.36348/sijcms.2022.v05i10.002","url":null,"abstract":"A practically important parameters of strength and chemical resistance of polyepoxide based on resin-analogue ED-20 with PEPA hardener, filled with microdispersed powders of Si, Zr, Cr, Nb, Ti, Mo carbides, have been experimentally studied in this article. The microstructure of the composites is characterized by a relatively uniform dense distribution of filler agglomerates, which can be seen in the example of compositions with 50 wt% TiC and ZrC. The absence of a significant effect of carbides on the temperature ranges of oxidative degradation of composites was established. Swelling method established that filling can radically increase the resistance of composites to acetone organic solvents. At the same time, resistance in an acidic environment is noticeably reduced (for example, nitric acid). It was found that the introduction of 50 wt% carbide fillers gives a significant increase in the strength and modulus of elasticity during compression of the composites. There is also a decrease in shrinkage and an increase in adhesion to steel (with normal tearing).","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116779295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-03DOI: 10.36348/sijcms.2022.v05i10.001
Michael Junior Ajie, M. O. Onyema
C20 and C21 tricyclic terpanes were investigated in crude oils from Niger Delta, Nigeria. From comparison of the mass chromatograms (m/z 191) of two crude oil samples (CEN-21 and WST-69) with related literatures on tricyclic terpanes which eluted from the gas chromatography (GC) within certain retention time, 12 peaks were selected. Peaks 1 - 5 were selected as C20 tricyclic terpane isomers (TR20a-e) and peaks 6 - 12 selected as C21 tricyclic terpanes (TR21a-g). This distribution is usually as crude oils show a single peak each and indicate the distribution of C20 and C21 tricyclic terpanes in the Niger Delta crude oils is uncommon. Total abundances showed the C20 and the C21 tricyclic terpanes were more in CEN-21 than WST-69 with ratios of 3.07 and 1.84, respectively, with TR20a, TR20b, TR20d and TR21d being the most abundant isomers in both oil samples. These abundances indicate CEN-21 was thermally more mature than WST-69 and that the C20 tricyclic terpanes were generated more than the C21 tricyclic terpanes with increasing thermal maturity of the crude oils. Significant similarities observed in the normalized composition profiles and 66 derived ratios suggest the Niger Delta crude oil samples were genetically related and were predominantly derived from terrigenous Tertiary deltaic petroleum systems. Some differences observed in the composition profile and derived ratios indicate minor input from a different source, depositional environment and/or maturity level and are suggestive as indicators for evaluation, correlation and/or discrimination of the Niger Delta crude oils.
{"title":"Uncommon Distribution of C20 and C21 Tricyclic Terpanes in Niger Delta Crude Oils","authors":"Michael Junior Ajie, M. O. Onyema","doi":"10.36348/sijcms.2022.v05i10.001","DOIUrl":"https://doi.org/10.36348/sijcms.2022.v05i10.001","url":null,"abstract":"C20 and C21 tricyclic terpanes were investigated in crude oils from Niger Delta, Nigeria. From comparison of the mass chromatograms (m/z 191) of two crude oil samples (CEN-21 and WST-69) with related literatures on tricyclic terpanes which eluted from the gas chromatography (GC) within certain retention time, 12 peaks were selected. Peaks 1 - 5 were selected as C20 tricyclic terpane isomers (TR20a-e) and peaks 6 - 12 selected as C21 tricyclic terpanes (TR21a-g). This distribution is usually as crude oils show a single peak each and indicate the distribution of C20 and C21 tricyclic terpanes in the Niger Delta crude oils is uncommon. Total abundances showed the C20 and the C21 tricyclic terpanes were more in CEN-21 than WST-69 with ratios of 3.07 and 1.84, respectively, with TR20a, TR20b, TR20d and TR21d being the most abundant isomers in both oil samples. These abundances indicate CEN-21 was thermally more mature than WST-69 and that the C20 tricyclic terpanes were generated more than the C21 tricyclic terpanes with increasing thermal maturity of the crude oils. Significant similarities observed in the normalized composition profiles and 66 derived ratios suggest the Niger Delta crude oil samples were genetically related and were predominantly derived from terrigenous Tertiary deltaic petroleum systems. Some differences observed in the composition profile and derived ratios indicate minor input from a different source, depositional environment and/or maturity level and are suggestive as indicators for evaluation, correlation and/or discrimination of the Niger Delta crude oils.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123970949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Milk is an excellent source of proteins, fats and carbohydrates along with minerals and vitamins. It is the balanced diet for all age groups. In Pakistan consumption of milk is increasing day by day. Milk from different animal sources has quality and nutritional differences. Pasteurization found to be increased the milk quality and shelf-life stability by reducing microbial load. The objective of study is to evaluate the differences among the raw and pasteurized milk in terms of safety and microbial distribution. The proximate and quality analysis including moisture, crude protein, crude fat, total soluble solid, pH, acidity, lactose composition, solid-not-fat (SNF) and specific gravity were done for the milk samples. The microbial tests were performed for Total Plate Count and Total Coliform Count before and after pasteurization process. The collected data was analysed statistically to estimate the level of significance. Pasteurized milk of buffalo showed high value for pH 6.65, lactose composition 5.964, crude fat 7.974%, crude protein 6.453%, SNF 6.672%, Total solids 12.646% while pasteurized cow milk showed low value as compare to buffalo milk samples as pH 6.60, lactose composition 4.732, crude fat 4.744%, crude protein 4.353%, SNF 6.128%, Total solids 10.872%. Total Coliform count (TCC) for raw and pasteurized milk of cow was 3.320 CFU/ml and 1.2600 CFU/ml respectively, whereas for buffaloes it was 2.604 CFU/ml and 1.0900 CFU/ml respectively. In case of TPC it was 2.834CFU/ml and 1.132 CFU/ml for raw to pasteurized milk of cow while it was 2.0320 CFU/ml and 1.0720 CFU/ml in buffaloes. Result revealed that pasteurized milk is safer to use and pasteurized milk has low microbial count as well as authenticity in safety and quality when compared with unpasteurized milk.
{"title":"Safety and Quality Assessment of Milk Before and After Pasteurization Collected from Different Regions of Punjab","authors":"Rimsha Rimsha, Javeria Munir, I. Fatima, Naba Ishfaq, Haiqa Shahid, Haneeza Murtaza, Khursheed Haroon","doi":"10.36348/sijcms.2022.v05i09.001","DOIUrl":"https://doi.org/10.36348/sijcms.2022.v05i09.001","url":null,"abstract":"Milk is an excellent source of proteins, fats and carbohydrates along with minerals and vitamins. It is the balanced diet for all age groups. In Pakistan consumption of milk is increasing day by day. Milk from different animal sources has quality and nutritional differences. Pasteurization found to be increased the milk quality and shelf-life stability by reducing microbial load. The objective of study is to evaluate the differences among the raw and pasteurized milk in terms of safety and microbial distribution. The proximate and quality analysis including moisture, crude protein, crude fat, total soluble solid, pH, acidity, lactose composition, solid-not-fat (SNF) and specific gravity were done for the milk samples. The microbial tests were performed for Total Plate Count and Total Coliform Count before and after pasteurization process. The collected data was analysed statistically to estimate the level of significance. Pasteurized milk of buffalo showed high value for pH 6.65, lactose composition 5.964, crude fat 7.974%, crude protein 6.453%, SNF 6.672%, Total solids 12.646% while pasteurized cow milk showed low value as compare to buffalo milk samples as pH 6.60, lactose composition 4.732, crude fat 4.744%, crude protein 4.353%, SNF 6.128%, Total solids 10.872%. Total Coliform count (TCC) for raw and pasteurized milk of cow was 3.320 CFU/ml and 1.2600 CFU/ml respectively, whereas for buffaloes it was 2.604 CFU/ml and 1.0900 CFU/ml respectively. In case of TPC it was 2.834CFU/ml and 1.132 CFU/ml for raw to pasteurized milk of cow while it was 2.0320 CFU/ml and 1.0720 CFU/ml in buffaloes. Result revealed that pasteurized milk is safer to use and pasteurized milk has low microbial count as well as authenticity in safety and quality when compared with unpasteurized milk.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"104 30","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113945512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-29DOI: 10.36348/sijcms.2022.v05i08.001
Ogbogo, I. O, I. A., Ishwah, B, Weor, T. T, A. O
Production of environmentally amenable silver nanoparticles (AgNPs) has earned the interest of the scientific community owing to their broad applications, primarily in the field of optronics, sensing, and extensively in pharmaceuticals as promising antioxidant, antimicrobial and anticancer agents. Conventionally silver nanoparticles are synthesized by a chemical method using chemicals as reducing agents which later become accountable for various biological risks due to their general toxicity; engendering the serious concern to develop environment-friendly processes. This study explored the production of eco-friendly AgNPs and the investigation of their antibacterial activity using ethanolic leaf extract of Jatropha curcas (LEJC) as the reducing agent and aqueous silver nitrate as the precursor. The characteristics of the synthesized LEJC-AgNPs were studied by ultraviolet-visible spectroscopy (UV-Vis), Fourier Transform Infrared (FTIR) and Scanning Electron Microscope (SEM). The LEJC-AgNPs formation was observed from the colour change of the mixture from dark-yellow to colloidal brown. A distinctive absorption maximum with surface Plasmon resonance at 425 nm confirmed the formation of LEJC-AgNPs and data on SEM analysis have shown that the synthesized nanoparticles were in the nano range and predominantly irregular and spherical in shape. FTIR identified the functional groups present in the extract for the formation of the LEJC-AgNPs. This green synthesis provides an economic, eco-friendly, and clean synthetic route to AgNPs. The assessed antibacterial activity of the LEJC-AgNPs obtained depicts activity against Staphylococcus aureus (Gram-positive), Escherichia coli and Klebsiella Pneumonia (Gram-negative) at 20, 40, and 80 mg/mL respectively. This data is reflective of the role of LEJC-AgNPs as a potential and promising antimicrobial agent against bacterial infections.
{"title":"Synthesis, Characterization and Antibacterial Activity Studies of Eco-Friendly Silver Nanoparticles from the Leaf Extract of Jatropha Curcas","authors":"Ogbogo, I. O, I. A., Ishwah, B, Weor, T. T, A. O","doi":"10.36348/sijcms.2022.v05i08.001","DOIUrl":"https://doi.org/10.36348/sijcms.2022.v05i08.001","url":null,"abstract":"Production of environmentally amenable silver nanoparticles (AgNPs) has earned the interest of the scientific community owing to their broad applications, primarily in the field of optronics, sensing, and extensively in pharmaceuticals as promising antioxidant, antimicrobial and anticancer agents. Conventionally silver nanoparticles are synthesized by a chemical method using chemicals as reducing agents which later become accountable for various biological risks due to their general toxicity; engendering the serious concern to develop environment-friendly processes. This study explored the production of eco-friendly AgNPs and the investigation of their antibacterial activity using ethanolic leaf extract of Jatropha curcas (LEJC) as the reducing agent and aqueous silver nitrate as the precursor. The characteristics of the synthesized LEJC-AgNPs were studied by ultraviolet-visible spectroscopy (UV-Vis), Fourier Transform Infrared (FTIR) and Scanning Electron Microscope (SEM). The LEJC-AgNPs formation was observed from the colour change of the mixture from dark-yellow to colloidal brown. A distinctive absorption maximum with surface Plasmon resonance at 425 nm confirmed the formation of LEJC-AgNPs and data on SEM analysis have shown that the synthesized nanoparticles were in the nano range and predominantly irregular and spherical in shape. FTIR identified the functional groups present in the extract for the formation of the LEJC-AgNPs. This green synthesis provides an economic, eco-friendly, and clean synthetic route to AgNPs. The assessed antibacterial activity of the LEJC-AgNPs obtained depicts activity against Staphylococcus aureus (Gram-positive), Escherichia coli and Klebsiella Pneumonia (Gram-negative) at 20, 40, and 80 mg/mL respectively. This data is reflective of the role of LEJC-AgNPs as a potential and promising antimicrobial agent against bacterial infections.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130431861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-02DOI: 10.36348/sijcms.2022.v05i07.001
J. Obi, Paul Chukwudi Osunwa
The potential of amino benzene and its derivatives in the synthesis of monoazo disperse dyes was studied. The dyes were synthesized by the diazotization of amino benzene and its derivatives and subsequent coupling with salicylic acid. The synthesized dyes were subjected to UV and IR characterization and the UV-VIS absorption spectra of the dyes in methanol, ethanol and ethyl acetate revealed that the dyes have absorption bands within the visible region of the electromagnetic spectrum and that the λmax of the dyes increases with increase in polarity of the solvents. The FTIR characterization of the dyes revealed the presence of C – O from phenol, C – N and N – H from amines, C – H from alkane, N = O from nitro compounds and – OH from alcohol and the proposed structures of the dyes revealed the presence of chromophoric, auxochromic and azodic groups which may help to explain why the dyes have excellent colourations. The dyeing and fastness properties of the dyes on nylon, wool, polyester and cotton revealed that the dyes will have commercial importance within the textile industries.
{"title":"UV and IR Characterization of Monoazo Disperse Dyes Synthesized from Aminobenzene and its Derivatives","authors":"J. Obi, Paul Chukwudi Osunwa","doi":"10.36348/sijcms.2022.v05i07.001","DOIUrl":"https://doi.org/10.36348/sijcms.2022.v05i07.001","url":null,"abstract":"The potential of amino benzene and its derivatives in the synthesis of monoazo disperse dyes was studied. The dyes were synthesized by the diazotization of amino benzene and its derivatives and subsequent coupling with salicylic acid. The synthesized dyes were subjected to UV and IR characterization and the UV-VIS absorption spectra of the dyes in methanol, ethanol and ethyl acetate revealed that the dyes have absorption bands within the visible region of the electromagnetic spectrum and that the λmax of the dyes increases with increase in polarity of the solvents. The FTIR characterization of the dyes revealed the presence of C – O from phenol, C – N and N – H from amines, C – H from alkane, N = O from nitro compounds and – OH from alcohol and the proposed structures of the dyes revealed the presence of chromophoric, auxochromic and azodic groups which may help to explain why the dyes have excellent colourations. The dyeing and fastness properties of the dyes on nylon, wool, polyester and cotton revealed that the dyes will have commercial importance within the textile industries.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128727067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-30DOI: 10.36348/sijcms.2022.v05i06.006
Ahmed Abed elmalik, F. Ahmed, A. A.
Guiera senegalensis generally occurs as a shrub or a small tree which belongs to the Combretaceae family and locally named in Sudan as “Gabeish”. It has medicinal properties such as anti-inflammatory, anti-oxidant, anti-asthmatic, potential anticancer, anti-anaphylactic and anti-microbial activities. The plant was collected from the traditional market in Omdurman. Prepared ethanolic extract of leaves were used to evaluate the phytochemical screening to detect the presence of flavonoids, alkaloids, tannins, phenol, saponins, carbohydrate,cumarins and absence of anthraquinones and triterpenes. The phytochemical contents revealed tannins (1.662), alkaloids (3.524), flavonoids (39.350) and biological study of leaves extract showed activity against Escherichia coli, Staphylococcus aureus, Bacillus subtile, Papillus subtile and Candida albicana.
{"title":"Phytochemical Analysis and Antimicrobial Activity of Guiera senegalensis Leaves Extraction","authors":"Ahmed Abed elmalik, F. Ahmed, A. A.","doi":"10.36348/sijcms.2022.v05i06.006","DOIUrl":"https://doi.org/10.36348/sijcms.2022.v05i06.006","url":null,"abstract":"Guiera senegalensis generally occurs as a shrub or a small tree which belongs to the Combretaceae family and locally named in Sudan as “Gabeish”. It has medicinal properties such as anti-inflammatory, anti-oxidant, anti-asthmatic, potential anticancer, anti-anaphylactic and anti-microbial activities. The plant was collected from the traditional market in Omdurman. Prepared ethanolic extract of leaves were used to evaluate the phytochemical screening to detect the presence of flavonoids, alkaloids, tannins, phenol, saponins, carbohydrate,cumarins and absence of anthraquinones and triterpenes. The phytochemical contents revealed tannins (1.662), alkaloids (3.524), flavonoids (39.350) and biological study of leaves extract showed activity against Escherichia coli, Staphylococcus aureus, Bacillus subtile, Papillus subtile and Candida albicana.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128391186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-27DOI: 10.36348/sijcms.2022.v05i06.005
Olaoluwa Olatomiwa Oladumiye
Oils derived from oil-bearing seeds or certain fruit pieces are known as plant oils or vegetable oils. Using the Soxhlet extraction technique and n-hexane as the solvent, Thevetia peruviana seed oil was extracted from the seed flour. Its physicochemical parameters were determined using standard analytical methods. The hydroxylation process was done through the vigorous stirring of the oil and formic acid with the slow addition of peroxide. The hydroxylated oil was analyzed for functional groups present using Fourier Transform Infrared Spectrometer. The results of the physiochemical parameters showed that Thevetia peruviana oil has acid value (3.88 mg KOH/g), iodine value (93.5 Wij’s), peroxide value (30.0 meq/kg), kinetic viscosity (1.6cp) and saponification value (121.76 mgKOH/g) while the hydroxylated oil has acid value (0.77 mg KOH/g), iodine value (81.40 Wij’s), peroxide value (7.85 meq/kg), kinetic viscosity (7.43cp) and saponification value (162.05 mgKOH/g). The FTIR results showed that both non-hydroxylated and hydroxylated plant oils had the following functional groups OH, CH, C=C, CH2, and C=O. The results showed that the bands were shortened in the hydroxylated oil spectrum except (OH) which became broad indicating the formation of the hydroxyl group by the consumption of the C=C band in the unhydrolyzed oil. The hydroxylation of plant oils using Thevetia peruviana shows the potential of the plant oil to be used as a precursor for the production of industrial intermediates which can replace the dependence on petroleum products.
{"title":"Synthesis and Characterization of Hydroxylated Plant Oil from Thevetia Peruviana Seed","authors":"Olaoluwa Olatomiwa Oladumiye","doi":"10.36348/sijcms.2022.v05i06.005","DOIUrl":"https://doi.org/10.36348/sijcms.2022.v05i06.005","url":null,"abstract":"Oils derived from oil-bearing seeds or certain fruit pieces are known as plant oils or vegetable oils. Using the Soxhlet extraction technique and n-hexane as the solvent, Thevetia peruviana seed oil was extracted from the seed flour. Its physicochemical parameters were determined using standard analytical methods. The hydroxylation process was done through the vigorous stirring of the oil and formic acid with the slow addition of peroxide. The hydroxylated oil was analyzed for functional groups present using Fourier Transform Infrared Spectrometer. The results of the physiochemical parameters showed that Thevetia peruviana oil has acid value (3.88 mg KOH/g), iodine value (93.5 Wij’s), peroxide value (30.0 meq/kg), kinetic viscosity (1.6cp) and saponification value (121.76 mgKOH/g) while the hydroxylated oil has acid value (0.77 mg KOH/g), iodine value (81.40 Wij’s), peroxide value (7.85 meq/kg), kinetic viscosity (7.43cp) and saponification value (162.05 mgKOH/g). The FTIR results showed that both non-hydroxylated and hydroxylated plant oils had the following functional groups OH, CH, C=C, CH2, and C=O. The results showed that the bands were shortened in the hydroxylated oil spectrum except (OH) which became broad indicating the formation of the hydroxyl group by the consumption of the C=C band in the unhydrolyzed oil. The hydroxylation of plant oils using Thevetia peruviana shows the potential of the plant oil to be used as a precursor for the production of industrial intermediates which can replace the dependence on petroleum products.","PeriodicalId":230897,"journal":{"name":"Scholars International Journal of Chemistry and Material Sciences","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134405130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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