Pub Date : 2023-05-09DOI: 10.14314/polimery.2023.5.1
R. Ebrahimi, M. Taherkhani
Polyacrylate hydrogels containing starch, ZeSe and Fe3O4 nanoparticles were obtained. The polymerization process was carried out in an ultrasonic field. The structure (SEM, FTIR), swelling properties and the ability of hydrogels to adsorb dyes (methylene blue, methyl orange, methyl red and Eriochrome black T) and heavy metals (Cu2+) from wastewater were investigated. Hydrogels containing AgCl nanoparticles were also obtained.
{"title":"Synthesis of hydrogel nanocomposites and their application in removing dyes and impurities","authors":"R. Ebrahimi, M. Taherkhani","doi":"10.14314/polimery.2023.5.1","DOIUrl":"https://doi.org/10.14314/polimery.2023.5.1","url":null,"abstract":"Polyacrylate hydrogels containing starch, ZeSe and Fe3O4 nanoparticles were obtained. The polymerization process was carried out in an ultrasonic field. The structure (SEM, FTIR), swelling properties and the ability of hydrogels to adsorb dyes (methylene blue, methyl orange, methyl red and Eriochrome black T) and heavy metals (Cu2+) from wastewater were investigated. Hydrogels containing AgCl nanoparticles were also obtained.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43355330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-25DOI: 10.14314/polimery.2023.2.1
Muhammad Amir, S. Hasany, M. A. Asghar
The influence of the bentonite content (1, 3, 5 wt%) on the mechanical properties of lightweightcotton (C), polyester (P) and polyester-cotton (P/C 50/50) fabrics was investigated. Starch was used asa water-insoluble binder for coating fabrics. Bentonite nanoparticles were obtained by repeated hydration,decantation and evaporation of the water dispersion. The bentonite particle size was determinedby the XRD method using the Debye-Scherrer equation. The diffraction of the laser beam was used todetermine particles size distribution. The addition of bentonite nanoclay significantly improved tensilestrength (26-61% and 99–118% in the warp and weft direction, respectively) and tear strength (4‒13%and 5–24% in the wrap and weft direction, respectively) of coated fabrics. Their abrasion resistancehas also slightly increased. The biggest changes were noted for the cotton fabric, the smallest for thepolyester fabric, which may result from the low compatibility between starch and the polyester fabric.
{"title":"Modification of bentonite nanoclay for textile application","authors":"Muhammad Amir, S. Hasany, M. A. Asghar","doi":"10.14314/polimery.2023.2.1","DOIUrl":"https://doi.org/10.14314/polimery.2023.2.1","url":null,"abstract":"The influence of the bentonite content (1, 3, 5 wt%) on the mechanical properties of lightweightcotton (C), polyester (P) and polyester-cotton (P/C 50/50) fabrics was investigated. Starch was used asa water-insoluble binder for coating fabrics. Bentonite nanoparticles were obtained by repeated hydration,decantation and evaporation of the water dispersion. The bentonite particle size was determinedby the XRD method using the Debye-Scherrer equation. The diffraction of the laser beam was used todetermine particles size distribution. The addition of bentonite nanoclay significantly improved tensilestrength (26-61% and 99–118% in the warp and weft direction, respectively) and tear strength (4‒13%and 5–24% in the wrap and weft direction, respectively) of coated fabrics. Their abrasion resistancehas also slightly increased. The biggest changes were noted for the cotton fabric, the smallest for thepolyester fabric, which may result from the low compatibility between starch and the polyester fabric.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41497059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-25DOI: 10.14314/polimery.2023.4.1
Maja Zalega, J. Nowak, K. Bociong
The composite consisting of a mixture of bis-GMA/UDMA/HEMA/TEGDMA monomers forming a polymer matrix filled with silanized silica (45 wt%) was modified with CTAB or DODAB quaternary ammonium salts (0.5‒2.0 wt%). The hardness, flexural strength and diametrical tensile strength of the composite before and after modification were tested. The type and amount of salt affect the hardness, flexural strength and shrinkage stress, but it does not affect the diametrical tensile strength of the tested composites.
{"title":"The influence of quaternary ammonium salts on mechanical properties of light-cured resin dental composites","authors":"Maja Zalega, J. Nowak, K. Bociong","doi":"10.14314/polimery.2023.4.1","DOIUrl":"https://doi.org/10.14314/polimery.2023.4.1","url":null,"abstract":"The composite consisting of a mixture of bis-GMA/UDMA/HEMA/TEGDMA monomers forming a polymer matrix filled with silanized silica (45 wt%) was modified with CTAB or DODAB quaternary ammonium salts (0.5‒2.0 wt%). The hardness, flexural strength and diametrical tensile strength of the composite before and after modification were tested. The type and amount of salt affect the hardness, flexural strength and shrinkage stress, but it does not affect the diametrical tensile strength of the tested composites.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66647707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-30DOI: 10.14314/polimery.2023.3.2
Haza Sattar majeed, Farah Khalaf Hammoud Al-Juboory, Raghad Hamid, R. M. Zawawi
The melt-mixing method was used to obtain nanocomposites of ethylene vinyl acetate copolymer (EVA) with 1, 3 or 5wt% of hydrophilic zinc oxide (ZnO) nanoparticles. The contact angle, barrier and antimicrobial properties of the obtained composites were investigated. The nanocomposites were characterized by better hydrophilic and barrier properties, as evidenced by, respectively, a smaller contact angle and lower water vapor permeability and water absorption compared to EVA, which can be explained by the formation of hydrogen bonds between EVA and ZnO. In addition, the composites were characterized by greater bactericidal activity against E. coli and S. aureus. The optimal physical and microbial properties were obtained with 3 wt% ZnO content.
{"title":"EVA/zinc oxide nanocomposites for active food packaging: selected physical, and microbial properties","authors":"Haza Sattar majeed, Farah Khalaf Hammoud Al-Juboory, Raghad Hamid, R. M. Zawawi","doi":"10.14314/polimery.2023.3.2","DOIUrl":"https://doi.org/10.14314/polimery.2023.3.2","url":null,"abstract":"The melt-mixing method was used to obtain nanocomposites of ethylene vinyl acetate copolymer (EVA) with 1, 3 or 5wt% of hydrophilic zinc oxide (ZnO) nanoparticles. The contact angle, barrier and antimicrobial properties of the obtained composites were investigated. The nanocomposites were characterized by better hydrophilic and barrier properties, as evidenced by, respectively, a smaller contact angle and lower water vapor permeability and water absorption compared to EVA, which can be explained by the formation of hydrogen bonds between EVA and ZnO. In addition, the composites were characterized by greater bactericidal activity against E. coli and S. aureus. The optimal physical and microbial properties were obtained with 3 wt% ZnO content.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41891107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The melt-mixing method was used to obtain nanocomposites of ethylene vinyl acetate copolymer (EVA) with 1, 3 or 5wt% of hydrophilic zinc oxide (ZnO) nanoparticles. The contact angle, barrier and antimicrobial properties of the obtained composites were investigated. The nanocomposites were characterized by better hydrophilic and barrier properties, as evidenced by, respectively, a smaller contact angle and lower water vapor permeability and water absorption compared to EVA, which can be explained by the formation of hydrogen bonds between EVA and ZnO. In addition, the composites were characterized by greater bactericidal activity against E. coli and S. aureus. The optimal physical and microbial properties were obtained with 3 wt% ZnO content.
{"title":"EVA/zinc oxide nanocomposites for active food packaging: selected physical, and microbial properties","authors":"Haza Satar Majeed, Farah Khalaf Hammoud Al-Juboory, Raghad Hamid, Ruzniza Mohd Zawawi","doi":"10.14314/polimery.2023.3.1","DOIUrl":"https://doi.org/10.14314/polimery.2023.3.1","url":null,"abstract":"The melt-mixing method was used to obtain nanocomposites of ethylene vinyl acetate copolymer (EVA) with 1, 3 or 5wt% of hydrophilic zinc oxide (ZnO) nanoparticles. The contact angle, barrier and antimicrobial properties of the obtained composites were investigated. The nanocomposites were characterized by better hydrophilic and barrier properties, as evidenced by, respectively, a smaller contact angle and lower water vapor permeability and water absorption compared to EVA, which can be explained by the formation of hydrogen bonds between EVA and ZnO. In addition, the composites were characterized by greater bactericidal activity against E. coli and S. aureus. The optimal physical and microbial properties were obtained with 3 wt% ZnO content.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135419804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-10DOI: 10.14314/polimery.2023.2.3
Chao Meng, Zhengzhou Gu, Jianfa Wang, J. Sui, Shaokai Hu, Susu Zhang, Xiaoyi Zhang, Peiyao Li
As a result of the coordination polycondensation of p-phenylenediamine with glyoxal or terephthalaldehyde, two types of long-chain conjugated Schiff bases differing in structure were obtained. Their ferric salts were also obtained. Elemental analysis and infrared spectroscopy (FTIR) were used to evaluate the chemical structure of the obtained Schiff bases and their salts. Thermal stability (TGA) and electrical conductivity were also investigated.
{"title":"Synthesis and characterization of condensed Schiff bases and their iron salts with aldamine","authors":"Chao Meng, Zhengzhou Gu, Jianfa Wang, J. Sui, Shaokai Hu, Susu Zhang, Xiaoyi Zhang, Peiyao Li","doi":"10.14314/polimery.2023.2.3","DOIUrl":"https://doi.org/10.14314/polimery.2023.2.3","url":null,"abstract":"As a result of the coordination polycondensation of p-phenylenediamine with glyoxal or terephthalaldehyde, two types of long-chain conjugated Schiff bases differing in structure were obtained. Their ferric salts were also obtained. Elemental analysis and infrared spectroscopy (FTIR) were used to evaluate the chemical structure of the obtained Schiff bases and their salts. Thermal stability (TGA) and electrical conductivity were also investigated.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42881855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.14314/polimery.2023.2.2
A. Korobeinyk, G. Yurchenko, A. Matkovsky, V. Tertykh
Porous silica/sodium polyacrylate nanocomposites were obtained in a one-stage sol-gel process. The process involved acid hydrolysis of tetramethoxysilane (TMOS) in the presence of sodium salt of poly(acrylic acid) (SPA) in the molar ratio of TMOS/SPA from 2:1 to 8:1. The physical and thermal properties of the obtained nanocomposites were characterized by FTIR, SEM, TGA and adsorption analysis (BET, BJH). The mechanical and chemical treatment of the composite after the synthesis increased its surface area without significantly changing its thermal properties. The process enables pore size control.
{"title":"Thermal properties of porous sodium polyacrylate/silica nanocomposites","authors":"A. Korobeinyk, G. Yurchenko, A. Matkovsky, V. Tertykh","doi":"10.14314/polimery.2023.2.2","DOIUrl":"https://doi.org/10.14314/polimery.2023.2.2","url":null,"abstract":"Porous silica/sodium polyacrylate nanocomposites were obtained in a one-stage sol-gel process. The process involved acid hydrolysis of tetramethoxysilane (TMOS) in the presence of sodium salt of poly(acrylic acid) (SPA) in the molar ratio of TMOS/SPA from 2:1 to 8:1. The physical and thermal properties of the obtained nanocomposites were characterized by FTIR, SEM, TGA and adsorption analysis (BET, BJH). The mechanical and chemical treatment of the composite after the synthesis increased its surface area without significantly changing its thermal properties. The process enables pore size control.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48841224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-23DOI: 10.14314/polimery.2023.1.2
Muhammad Owais Raza Siddiqui, Salma Farooq, M. D. Husain, Saira Faisal
The effective thermal conductivity and air permeability of a multifilament polyester yarn used in sports T-shirts was investigated by computer modeling using finite element analysis. It has been shown that the number of fibers, the porosity of the yarn and the proportion of fibers in the volume fraction of the yarn have a direct effect on the effective thermal conductivity and air permeability of the multifilament yarn. It was found that with the increase in the number of fibers, the porosity of the yarn decreases linearly, while the volume fraction of the fibers increases, and thus the effective thermal conductivity increases. In addition, air permeability decreases exponentially.
{"title":"Prediction of air permeability and effective thermal conductivity of multifilament polyester yarn by finite element analysis","authors":"Muhammad Owais Raza Siddiqui, Salma Farooq, M. D. Husain, Saira Faisal","doi":"10.14314/polimery.2023.1.2","DOIUrl":"https://doi.org/10.14314/polimery.2023.1.2","url":null,"abstract":"The effective thermal conductivity and air permeability of a multifilament polyester yarn used in sports T-shirts was investigated by computer modeling using finite element analysis. It has been shown that the number of fibers, the porosity of the yarn and the proportion of fibers in the volume fraction of the yarn have a direct effect on the effective thermal conductivity and air permeability of the multifilament yarn. It was found that with the increase in the number of fibers, the porosity of the yarn decreases linearly, while the volume fraction of the fibers increases, and thus the effective thermal conductivity increases. In addition, air permeability decreases exponentially.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43221724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.14314/polimery.2023.1.1
I. Čatić, Maja Rujnić Havstad, I. Jović, Alexandra Mihajlović
The article presents issues related to equality in the creation of carbon dioxide equivalent. The impact of the increase in the number of residents and roommates, waste generation systems, information and material waste, material waste generation, the age of plastics and digitization are discussed.
{"title":"Equality in the creation of carbon dioxide equivalent","authors":"I. Čatić, Maja Rujnić Havstad, I. Jović, Alexandra Mihajlović","doi":"10.14314/polimery.2023.1.1","DOIUrl":"https://doi.org/10.14314/polimery.2023.1.1","url":null,"abstract":"The article presents issues related to equality in the creation of carbon dioxide equivalent. The impact of the increase in the number of residents and roommates, waste generation systems, information and material waste, material waste generation, the age of plastics and digitization are discussed.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43336984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-19DOI: 10.14314/polimery.2023.1.4
R. Salgado-Delgado, A. Salgado-Delgado, A. Olarte-Paredes, J. J. García-Fuentes, T. López-Lara, J. Hernández-Zaragoza, E. García-Hernández, V. Castaño
The paper describes the synthesis and characterization of two third generation dendrimers from citric acid and a variant with a dendron terminated with lipoic acid. FTIR and C NMR confirmed the presence of signals characteristic for the dendrimer functional groups OH, C-O, C=O, C-H and C-S. DSC showed that, unlike citric acid, the dendrimer is amorphous. SEM revealed changes in the structure of citric acid particles in each dendrimer generation. In addition, the structure was more homogeneous. Dendrimers are hydrophobic due to ester linkages. Contact angle > 90° confirms their hydrophobic character. Moreover, the dendrimer with a dendron terminated with lipoic acid absorbs Cu+2 and Fe+3metal ions, so it can be used as an adsorbent for heavy metals.
{"title":"Synthesis and characterization of a citric and lipoic acids-derived dendrimer","authors":"R. Salgado-Delgado, A. Salgado-Delgado, A. Olarte-Paredes, J. J. García-Fuentes, T. López-Lara, J. Hernández-Zaragoza, E. García-Hernández, V. Castaño","doi":"10.14314/polimery.2023.1.4","DOIUrl":"https://doi.org/10.14314/polimery.2023.1.4","url":null,"abstract":"The paper describes the synthesis and characterization of two third generation dendrimers from citric acid and a variant with a dendron terminated with lipoic acid. FTIR and C NMR confirmed the presence of signals characteristic for the dendrimer functional groups OH, C-O, C=O, C-H and C-S. DSC showed that, unlike citric acid, the dendrimer is amorphous. SEM revealed changes in the structure of citric acid particles in each dendrimer generation. In addition, the structure was more homogeneous. Dendrimers are hydrophobic due to ester linkages. Contact angle > 90° confirms their hydrophobic character. Moreover, the dendrimer with a dendron terminated with lipoic acid absorbs Cu+2 and Fe+3metal ions, so it can be used as an adsorbent for heavy metals.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44407853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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