O. Levytska, O. Dolzhenkova, Oleksii Sichevyi, Larysa Dorhanova
The paper discusses a problem of formation and search of efficient ways to recycle wastes generated by waste treatment plants, a proposed technology for their heat treatment and utilization of waste as a raw material component for the production of masonry units. Highdensity polyethylene is used as a binder.
{"title":"Masonry Unit Manufacturing Technology Using Polymeric Binder","authors":"O. Levytska, O. Dolzhenkova, Oleksii Sichevyi, Larysa Dorhanova","doi":"10.23939/chcht14.01.088","DOIUrl":"https://doi.org/10.23939/chcht14.01.088","url":null,"abstract":"The paper discusses a problem of formation and search of efficient ways to recycle wastes generated by waste treatment plants, a proposed technology for their heat treatment and utilization of waste as a raw material component for the production of masonry units. Highdensity polyethylene is used as a binder.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89622022","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}
This work is based on the combination of the acid treated-cellulose and chemically adsorbed titanium(IV) oxide on its surface to obtain a hybrid material for application in water treatment to degrade organic compounds. The photocatalytic property was evaluated in the degradation of the methyl orange dye. The photodegradation activity was higher using the hybrid obtained from the cellulose whose hydrolysis was conducted at higher acid concentration, which resulted in smaller fiber diameter, as suggested by scanning electron microscopy. Thermogravimetric analysis and X-ray diffraction confirmed that this hybrid has lower thermal degradation temperature and the size of the cellulose nanocrystals is lower in the more hydrolyzed sample. This allowed the increase of surface area and therefore, the fixation of more nanoparticles of TiO2, which is responsible for the photodegradation activity, observed by the bleaching of a dye solution.
{"title":"Hybrids of Cellulose-TiO2 for Environmental Application","authors":"L. G. P. Tienne, F. B. Santos, M. Marques","doi":"10.23939/chcht14.01.093","DOIUrl":"https://doi.org/10.23939/chcht14.01.093","url":null,"abstract":"This work is based on the combination of the acid treated-cellulose and chemically adsorbed titanium(IV) oxide on its surface to obtain a hybrid material for application in water treatment to degrade organic compounds. The photocatalytic property was evaluated in the degradation of the methyl orange dye. The photodegradation activity was higher using the hybrid obtained from the cellulose whose hydrolysis was conducted at higher acid concentration, which resulted in smaller fiber diameter, as suggested by scanning electron microscopy. Thermogravimetric analysis and X-ray diffraction confirmed that this hybrid has lower thermal degradation temperature and the size of the cellulose nanocrystals is lower in the more hydrolyzed sample. This allowed the increase of surface area and therefore, the fixation of more nanoparticles of TiO2, which is responsible for the photodegradation activity, observed by the bleaching of a dye solution.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82287823","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}
The edible films from potato starch, chemically modified food starch refined from high amylose corn, carbohydrate polymer from a waxy corn and a special high-temperature dextrin refined from tapioca starch were studied according to organoleptic characteristics. The greatest elongation (108 %) and strength (47.6 MPa) were found to be with a film based on potato starch. The modified starches such as dextrin and tapioca starch retain amorphous of film structure better than others. The films from modified starch contain more crystallization moisture because there is no amylopectin in this starch. The obtained results are recommended to use for optimizing food production.
{"title":"Starch Type Effect on Organoleptic, Thermogravimetric and X-ray Diffraction Indices of Edible Films and Coatings","authors":"O. Shulga, A. Chorna, S. Shulga","doi":"10.23939/chcht14.01.081","DOIUrl":"https://doi.org/10.23939/chcht14.01.081","url":null,"abstract":"The edible films from potato starch, chemically modified food starch refined from high amylose corn, carbohydrate polymer from a waxy corn and a special high-temperature dextrin refined from tapioca starch were studied according to organoleptic characteristics. The greatest elongation (108 %) and strength (47.6 MPa) were found to be with a film based on potato starch. The modified starches such as dextrin and tapioca starch retain amorphous of film structure better than others. The films from modified starch contain more crystallization moisture because there is no amylopectin in this starch. The obtained results are recommended to use for optimizing food production.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82757931","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 : 2019-12-17DOI: 10.37591/JOMCCT.V10I3.2485
Aarti Sanjay Dhumal, Pragati Pramod Shinde, V. Khyade
The quality of food material supplied decide the quality of silky cocoon spun by the larval instars of silkworm, Bombyx mori (L). The present attempt deals with utilization of aqueous solution of Norfloxacin for treating the leaves of mulberry, Morus alba (L). Two concentrations of Norfloxacin were selected for the attempt. Two concentrations of Norfloxacin include 50 mg per liter (50 ppm) and 100 mg per liter (100 ppm). The solution was prepared by adding powder antibiotic in distilled water and made the required concentration. 400 ml of aqueous solution of Norfloxacin were used to treat 100 grams of leaves of mulberry, Morus alba (L) for feeding the group of hundred larval instars for each attempt of feeding. Treated mulberry leaves were fed to the fifth larval instars. The feeding the larvae with treated leaves was carried for first four days. Four feedings were given for each day. For each feeding hundred grams of leaves (for the group of hundred larvae) were used. The larvae fed with untreated control & water treated control leaves were also maintained. Through the use of silk glands; fat bodies and haemolymph, bioassay of total protein was carried out on fifth day. The total protein content of silk glands; fat bodies and haemolymph was found improved 61.519 to 114.667; 79.928 to 90.055 and 30.983 to 31.010 percents respectively through feeding the fifth instars of silkworm, Bombyx mori (L) (Double Hybrid Race) leaves of mulberry, Morus alba (L) treated with aqueous solution of Norfloxacin antibiotics.
{"title":"The Aqueous Solution of Antibiotics Norfloxacin for Total Protein Contents in the Fifth Instar Larvae of Silkworm, Bombyx mori (L) (Double Hybrid Race) [(CSR2XCSR27)] x [(CSR6XCSR26)].","authors":"Aarti Sanjay Dhumal, Pragati Pramod Shinde, V. Khyade","doi":"10.37591/JOMCCT.V10I3.2485","DOIUrl":"https://doi.org/10.37591/JOMCCT.V10I3.2485","url":null,"abstract":"The quality of food material supplied decide the quality of silky cocoon spun by the larval instars of silkworm, Bombyx mori (L). The present attempt deals with utilization of aqueous solution of Norfloxacin for treating the leaves of mulberry, Morus alba (L). Two concentrations of Norfloxacin were selected for the attempt. Two concentrations of Norfloxacin include 50 mg per liter (50 ppm) and 100 mg per liter (100 ppm). The solution was prepared by adding powder antibiotic in distilled water and made the required concentration. 400 ml of aqueous solution of Norfloxacin were used to treat 100 grams of leaves of mulberry, Morus alba (L) for feeding the group of hundred larval instars for each attempt of feeding. Treated mulberry leaves were fed to the fifth larval instars. The feeding the larvae with treated leaves was carried for first four days. Four feedings were given for each day. For each feeding hundred grams of leaves (for the group of hundred larvae) were used. The larvae fed with untreated control & water treated control leaves were also maintained. Through the use of silk glands; fat bodies and haemolymph, bioassay of total protein was carried out on fifth day. The total protein content of silk glands; fat bodies and haemolymph was found improved 61.519 to 114.667; 79.928 to 90.055 and 30.983 to 31.010 percents respectively through feeding the fifth instars of silkworm, Bombyx mori (L) (Double Hybrid Race) leaves of mulberry, Morus alba (L) treated with aqueous solution of Norfloxacin antibiotics.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76801519","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 : 2019-12-17DOI: 10.37591/JOMCCT.V10I3.2486
Nilam Dilip Warale, V. Khyade
Intracellular catabolic degradation of lysosomal components is called as autophagy. The autophagy is working for “Cellular Garbage Disposal and Intracellular Recycling”. It serves to orchestrate the process of cellular homeostasis. It is achieved through elimination of superfluous or damaged proteins and organelles; through invading microbes; through the provision of substrates for energy generation and through the biosynthesis in stress. The autophagy promotes the cellular health and there by the health of body of animal. The autophagy is critical for development, differentiation and maintenance of working of the cell. It also play key role in the host defense against pathogens. The cancer is a complex process. In cancer cell, the autophagy exerts its influence in multiple ways. The role of autophagy in cancer is context dependent. Chronic tissue damage and cell death can lead to the initiation of cancer. In cancer cell, the autophagy is working as a cytoprotective survival pathway. The autophagy prevents chronic tissue damage and cell death. With this reference, the stimulation or restoration of autophagy may prevent cancer. In practical sense, the cancer cells deserve capability of utilization of autophagy for enhancement of their fitness and ability of survival with altered metabolism. In this reference, strategy of inhibition of autophagy is the need for treatment for cancer.
{"title":"Autophagy: Therapeutic Approach For Cancer Treatment","authors":"Nilam Dilip Warale, V. Khyade","doi":"10.37591/JOMCCT.V10I3.2486","DOIUrl":"https://doi.org/10.37591/JOMCCT.V10I3.2486","url":null,"abstract":"Intracellular catabolic degradation of lysosomal components is called as autophagy. The autophagy is working for “Cellular Garbage Disposal and Intracellular Recycling”. It serves to orchestrate the process of cellular homeostasis. It is achieved through elimination of superfluous or damaged proteins and organelles; through invading microbes; through the provision of substrates for energy generation and through the biosynthesis in stress. The autophagy promotes the cellular health and there by the health of body of animal. The autophagy is critical for development, differentiation and maintenance of working of the cell. It also play key role in the host defense against pathogens. The cancer is a complex process. In cancer cell, the autophagy exerts its influence in multiple ways. The role of autophagy in cancer is context dependent. Chronic tissue damage and cell death can lead to the initiation of cancer. In cancer cell, the autophagy is working as a cytoprotective survival pathway. The autophagy prevents chronic tissue damage and cell death. With this reference, the stimulation or restoration of autophagy may prevent cancer. In practical sense, the cancer cells deserve capability of utilization of autophagy for enhancement of their fitness and ability of survival with altered metabolism. In this reference, strategy of inhibition of autophagy is the need for treatment for cancer.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74071019","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 : 2019-12-17DOI: 10.37591/JOMCCT.V10I3.2484
V. M. Sonawane, V. Khyade
The specific density of earthworm in soil and the microorganisms in soil are correlated with each other. The fruitful interactions among soil microorganisms and the earthworms in soil serve to orchestrate the process of improvement in the crop yield. The Pseudomonas trivialis (L) is a deleterious rhizobacterial species. This rhizobacterial species is recognized for the production of Indole Acetic Acid (IAA) (the plant growth promoting hormone). The present attempt deals with use of Pseudomonas trivialis (L) rhizobacteria in different concentrations (CFU/ml) (0; 10 6 ; 10 7 and 10 8 ) for analysis of qualitative parameters of radish, Raphanus sativus (L) in presence and in absence of earthworms. With reference to biomass above ground and total Presence of rhizobacteria, Pseudomonas trivialis (L), earthworms were found enhancing growth of the radish, Rhaphanus sativus (L), the response of presence of earthworm was found significant over the control. The biomass of radish, Rhaphanus sativus (L) below ground was also found improved. The titers of inoculum of rhizobacteria, Pseudomonas trivialis (L) was found significant for Radish biomass promoting influence in vermin-field. The present attempt reporting rhizobacterial inoculum of about 10 8 CFU/ml as the most suitable for excellent biomass production of radish, Rhaphanus sativus (L). The system of “Vermi-field with rhizobacterial population” should be utilized efficiently radish crop yield.
{"title":"Qualitative and Quantitative Yield in the Radish Crop Through the Utilization of rhizobacteria, Pseudomonas trivialis (L) and Earthworm, Eudrilus eugenae (L).","authors":"V. M. Sonawane, V. Khyade","doi":"10.37591/JOMCCT.V10I3.2484","DOIUrl":"https://doi.org/10.37591/JOMCCT.V10I3.2484","url":null,"abstract":"The specific density of earthworm in soil and the microorganisms in soil are correlated with each other. The fruitful interactions among soil microorganisms and the earthworms in soil serve to orchestrate the process of improvement in the crop yield. The Pseudomonas trivialis (L) is a deleterious rhizobacterial species. This rhizobacterial species is recognized for the production of Indole Acetic Acid (IAA) (the plant growth promoting hormone). The present attempt deals with use of Pseudomonas trivialis (L) rhizobacteria in different concentrations (CFU/ml) (0; 10 6 ; 10 7 and 10 8 ) for analysis of qualitative parameters of radish, Raphanus sativus (L) in presence and in absence of earthworms. With reference to biomass above ground and total Presence of rhizobacteria, Pseudomonas trivialis (L), earthworms were found enhancing growth of the radish, Rhaphanus sativus (L), the response of presence of earthworm was found significant over the control. The biomass of radish, Rhaphanus sativus (L) below ground was also found improved. The titers of inoculum of rhizobacteria, Pseudomonas trivialis (L) was found significant for Radish biomass promoting influence in vermin-field. The present attempt reporting rhizobacterial inoculum of about 10 8 CFU/ml as the most suitable for excellent biomass production of radish, Rhaphanus sativus (L). The system of “Vermi-field with rhizobacterial population” should be utilized efficiently radish crop yield.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82469495","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 : 2019-12-17DOI: 10.37591/JOMCCT.V10I3.2415
Purendra Singh
The study of antioxidants and free radicals in biology is producing medical revolution that promises a new age disease and health management. The present study was performed to evaluate the in vitro antioxidant effect of the methanol, ethyl acetate, hydro alcohol and water extracts of Albizia lebbeck (L.) Benth. by using DPPH method. The ethyl acetate extract exhibited significant inhibition in DPPH free radical formation with IC 50 values of 70.5206. The ethyl acetate extract showed potent activity on DPPH, which is compared to that of ascorbic acid (IC 50 = 36.8582) taken as standard. The lesser IC 50 value indicates larger antioxidant activity. The results of the present comprehensive analysis demonstrated that ethyl acetate extract of Albizia lebbeck (L.) Benth. is a viable source of nature antioxidant and might be exploited for functional foods and nutraceutical applications.
{"title":"Free radical scavenging effect of various extracts of Root of Shirisha (Albizia lebbeck (L.)Benth.) by DPPH method","authors":"Purendra Singh","doi":"10.37591/JOMCCT.V10I3.2415","DOIUrl":"https://doi.org/10.37591/JOMCCT.V10I3.2415","url":null,"abstract":"The study of antioxidants and free radicals in biology is producing medical revolution that promises a new age disease and health management. The present study was performed to evaluate the in vitro antioxidant effect of the methanol, ethyl acetate, hydro alcohol and water extracts of Albizia lebbeck (L.) Benth. by using DPPH method. The ethyl acetate extract exhibited significant inhibition in DPPH free radical formation with IC 50 values of 70.5206. The ethyl acetate extract showed potent activity on DPPH, which is compared to that of ascorbic acid (IC 50 = 36.8582) taken as standard. The lesser IC 50 value indicates larger antioxidant activity. The results of the present comprehensive analysis demonstrated that ethyl acetate extract of Albizia lebbeck (L.) Benth. is a viable source of nature antioxidant and might be exploited for functional foods and nutraceutical applications.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83204785","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 : 2019-12-17DOI: 10.37591/JOMCCT.V10I3.2414
Purendra Singh
This study was aimed at the elucidation of the bioactive compounds present in methanol extracts of Albizia lebbeck (L.) Benth. Pod using Gas chromatography–mass spectrometry (GC-MS) and Fourier transform infrared spectroscopic (FTIR) techniques. The GC-MS mass spectra of the identified compounds were compared with those of the National Institute of Standards and Technology (NIST) database library. The results confirmed the presence of five compounds including Pentasiloxane, 1,1,3,3,5,5,7,7,9,9-decamethyl-, Heptasiloxane, hexadecamethyl-, Methyl glycocholate, 3TMS derivative, (5a)Pregnane-3,20a-diol, 14a,18a-[4-methyl-3-oxo-(1-oxa-4-azabutane-1,4 -diyl)]-, diacetate, Cyclodecasiloxane, eicosamethyl were found in methanol extracts. The presence of these bioactive compounds in the plant offers a platform for the traditional use of Albizia lebbeck (L.) Benth. in treatment of various diseases. The FTIR spectroscopic studies revealed the presence of these functional groups: C-F stretch (1018.08 ), C – O stretch (1112.70), (-C-H) Bending, stretch (1409.04), (C=C) stretch (1647.62), (N-H) stretch (2832.78), (C-H) stretch (2943.06), (O-H) (stretch, H- bonded) (3321.22) in the pod extracts.
{"title":"Gas chromatography mass spectrometry and Fourier transform infrared spectral analyses of Albizia lebbeck (L.) Benth. pod methanol extract","authors":"Purendra Singh","doi":"10.37591/JOMCCT.V10I3.2414","DOIUrl":"https://doi.org/10.37591/JOMCCT.V10I3.2414","url":null,"abstract":"This study was aimed at the elucidation of the bioactive compounds present in methanol extracts of Albizia lebbeck (L.) Benth. Pod using Gas chromatography–mass spectrometry (GC-MS) and Fourier transform infrared spectroscopic (FTIR) techniques. The GC-MS mass spectra of the identified compounds were compared with those of the National Institute of Standards and Technology (NIST) database library. The results confirmed the presence of five compounds including Pentasiloxane, 1,1,3,3,5,5,7,7,9,9-decamethyl-, Heptasiloxane, hexadecamethyl-, Methyl glycocholate, 3TMS derivative, (5a)Pregnane-3,20a-diol, 14a,18a-[4-methyl-3-oxo-(1-oxa-4-azabutane-1,4 -diyl)]-, diacetate, Cyclodecasiloxane, eicosamethyl were found in methanol extracts. The presence of these bioactive compounds in the plant offers a platform for the traditional use of Albizia lebbeck (L.) Benth. in treatment of various diseases. The FTIR spectroscopic studies revealed the presence of these functional groups: C-F stretch (1018.08 ), C – O stretch (1112.70), (-C-H) Bending, stretch (1409.04), (C=C) stretch (1647.62), (N-H) stretch (2832.78), (C-H) stretch (2943.06), (O-H) (stretch, H- bonded) (3321.22) in the pod extracts.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88021715","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}
T. Jumadilov, R. Kondaurov, A. Imangazy, N. Myrzakhmetova, I. Saparbekova
Phenomenon of the long-range effect of poly(methacrylic acid) hydrogel − poly(4-vinylpyridine) hydrogel (gPMAA−gP4VP intergel system) оn erbium ions sorption was studied. It was established that the structure of the basic hydrogel had a significant impact on the self-organization of the PMAA hydrogel. The mutual activation of hydrogels was investigated in an aqueous medium. Dependencies of swelling coefficient, specific electric conductivity and pH of aqueous solutions were determined. Individual PMAA and P4VP hydrogels showed the erbium ions extraction degree of about 44 % and 17 %, respectively. At the ratios 5:1 (83 % of gPMAA–17 % gP4VP) and 4:2 (67 % gMPAA–33 % gP4VP), 56 % and 53 % of erbium ions were recovered, respectively. After 48 h the PMAA and P4VP hydrogels had the polymer chain binding degree of 70 %. The obtained results point to the evidence that at these ratios there are significant changes in electrochemical and conformational degrees of initial macromolecules in gPMAA−gP4VP intergel system.
{"title":"Phenomenon of Remote Interaction and Sorption Ability of Rare Cross-linked Hydrogels of Polymethacrylic Acid and Poly-4-vinylpyridine in Relation to Erbium Ions","authors":"T. Jumadilov, R. Kondaurov, A. Imangazy, N. Myrzakhmetova, I. Saparbekova","doi":"10.23939/chcht13.04.451","DOIUrl":"https://doi.org/10.23939/chcht13.04.451","url":null,"abstract":"Phenomenon of the long-range effect of poly(methacrylic acid) hydrogel − poly(4-vinylpyridine) hydrogel (gPMAA−gP4VP intergel system) оn erbium ions sorption was studied. It was established that the structure of the basic hydrogel had a significant impact on the self-organization of the PMAA hydrogel. The mutual activation of hydrogels was investigated in an aqueous medium. Dependencies of swelling coefficient, specific electric conductivity and pH of aqueous solutions were determined. Individual PMAA and P4VP hydrogels showed the erbium ions extraction degree of about 44 % and 17 %, respectively. At the ratios 5:1 (83 % of gPMAA–17 % gP4VP) and 4:2 (67 % gMPAA–33 % gP4VP), 56 % and 53 % of erbium ions were recovered, respectively. After 48 h the PMAA and P4VP hydrogels had the polymer chain binding degree of 70 %. The obtained results point to the evidence that at these ratios there are significant changes in electrochemical and conformational degrees of initial macromolecules in gPMAA−gP4VP intergel system.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75060618","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}
M. Sanytsky, T. Kropyvnytska, Hans-Betram Fischer, N. Kondratieva
{"title":"Performance of Low Carbon Modified Composite Gypsum Binders with Increased Resistance","authors":"M. Sanytsky, T. Kropyvnytska, Hans-Betram Fischer, N. Kondratieva","doi":"10.23939/chcht13.04.495","DOIUrl":"https://doi.org/10.23939/chcht13.04.495","url":null,"abstract":"","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73129198","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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