Pub Date : 2022-06-24DOI: 10.14314/polimery.2022.6.1
D. Kolasa, K. Samsonowska, A. Kaszuba, A. Stępkowska, J. Wróbel, K. Wróbel, J. Lach
Dokonano przeglądu aktualnych aktów prawnych nt. bezpieczeństwa produktów wprowadzanych na rynek Unii Europejskiej. Przegląd, dotyczący (w części I) przepisów w zakresie kontroli substancji szkodliwych w wyrobach opakowaniowych wykonanych (lub zawierających elementy) z tworzyw sztucznych, obejmuje zarówno akty prawne UE, jak i akty krajowe transponujące regulacje unijne do polskiego prawa w tym zakresie.
{"title":"Wymagania dotyczące zawartości substancji szkodliwych w wyrobach rynkowych z tworzyw sztucznych i gumy. Cz. I. Opakowania, w tym materiały i wyroby z tworzyw sztucznych przeznaczone do kontaktu z żywnością","authors":"D. Kolasa, K. Samsonowska, A. Kaszuba, A. Stępkowska, J. Wróbel, K. Wróbel, J. Lach","doi":"10.14314/polimery.2022.6.1","DOIUrl":"https://doi.org/10.14314/polimery.2022.6.1","url":null,"abstract":"Dokonano przeglądu aktualnych aktów prawnych nt. bezpieczeństwa produktów wprowadzanych na rynek Unii Europejskiej. Przegląd, dotyczący (w części I) przepisów w zakresie kontroli substancji szkodliwych w wyrobach opakowaniowych wykonanych (lub zawierających elementy) z tworzyw sztucznych, obejmuje zarówno akty prawne UE, jak i akty krajowe transponujące regulacje unijne do polskiego prawa w tym zakresie.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47507276","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 : 2022-06-21DOI: 10.14314/polimery.2022.5.4
Savita Bargujar, G. Gambhir, M. B. Raigar, Sunita Hooda, D. Arya, Mamta Bhatia
A new ion-exchange resin was obtained by incorporating a tripropylamine group into a tamarind polysaccharide resin (TTA). The TTA resin was characterized by FTIR, elemental analysis, and other physicochemical properties. The influence of pH, treatment time and resin concentration on the adsorption of metal ions from industrial wastewater was investigated. It was found that the obtained TTA resin effectively removes heavy metal ions in the following order: Fe2+> Cu2+> Zn2+> Cd2+> Pb2+.
{"title":"A new polysaccharide-based ion-exchange resin for industrial wastewater treatment","authors":"Savita Bargujar, G. Gambhir, M. B. Raigar, Sunita Hooda, D. Arya, Mamta Bhatia","doi":"10.14314/polimery.2022.5.4","DOIUrl":"https://doi.org/10.14314/polimery.2022.5.4","url":null,"abstract":"A new ion-exchange resin was obtained by incorporating a tripropylamine group into a tamarind polysaccharide resin (TTA). The TTA resin was characterized by FTIR, elemental analysis, and other physicochemical properties. The influence of pH, treatment time and resin concentration on the adsorption of metal ions from industrial wastewater was investigated. It was found that the obtained TTA resin effectively removes heavy metal ions in the following order: Fe2+> Cu2+> Zn2+> Cd2+> Pb2+.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47100561","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 : 2022-06-14DOI: 10.14314/polimery.2022.5.3
M. N. Norizan, N. Abdullah, S. Z. N. Demon, N. A. Halim, Nurul Syahirah Nasuha Sa’aya, I. S. Mohamad
In the present study, stereoregular poly(3-hexylthiophene-2,5-diyl) (P3HT) coated hydroxylated multi-walled carbon nanotubes (MWCNT-OH) nanocomposites were prepared over different reaction times of non-covalent functionalization. The reaction time was set as 24, 48, 72, 96, and 120 hours. The structure and optical characteristics of nanocomposites were analyzed using Fourier-transform infrared (FTIR) and ultraviolet-visible (UV-Vis) spectroscopy, respectively. Reaction time affected prepared nanocomposites by decreasing the intensity of the P3HT/MWCNT-OH peaks gradually with increasing of the reaction time. Comparing with the pure P3HT and MWCNT-OH, the calculated energy band gap and the Urbach energy of the nanocomposites were reduced proportionally as the reaction time reached 120 hours and achieved 2.60 and 0.329 eV, respectively.
{"title":"Effect of reaction time on the structure and optical properties of P3HT/MWCNT-OH nanocomposites","authors":"M. N. Norizan, N. Abdullah, S. Z. N. Demon, N. A. Halim, Nurul Syahirah Nasuha Sa’aya, I. S. Mohamad","doi":"10.14314/polimery.2022.5.3","DOIUrl":"https://doi.org/10.14314/polimery.2022.5.3","url":null,"abstract":"In the present study, stereoregular poly(3-hexylthiophene-2,5-diyl) (P3HT) coated hydroxylated multi-walled carbon nanotubes (MWCNT-OH) nanocomposites were prepared over different reaction times of non-covalent functionalization. The reaction time was set as 24, 48, 72, 96, and 120 hours. The structure and optical characteristics of nanocomposites were analyzed using Fourier-transform infrared (FTIR) and ultraviolet-visible (UV-Vis) spectroscopy, respectively. Reaction time affected prepared nanocomposites by decreasing the intensity of the P3HT/MWCNT-OH peaks gradually with increasing of the reaction time. Comparing with the pure P3HT and MWCNT-OH, the calculated energy band gap and the Urbach energy of the nanocomposites were reduced proportionally as the reaction time reached 120 hours and achieved 2.60 and 0.329 eV, respectively.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45983111","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 : 2022-06-10DOI: 10.14314/polimery.2022.5.2
Sachin Kumar, Susheel Sandhu, A. Patel, Ketan Parmar
N,N’-bis(2,4-dimethoxybenzylidene)ethylenediamine was synthesized and used as a membrane carrier to create a novel poly(vinyl chloride) membrane potentiometric sensor that is selective especially for Fe3+ ions. The super-Nernstian slope of the projected sensor was 19.5 mV per decade over a concentration range of 7.3·10−8 –1·10−1 M having detection limit at 7.3·10−8 M. The sensor displayed a linear potential response for the detection of Fe3+ ions in about 30 seconds, and it had a lifespan of no less than 9 weeks without lacking any potential divergence. The selected sensor showed high selectivity in water solutions in relation to Fe3 + ions, even in the presence of other metal cations in the pH range of 3.6–10.
{"title":"Novel N,N’-bis(2,4-dimethoxybenzylidene)ethylenediamine PVC membrane electrode for the potentiometric iron selective sensor based on Schiff base ligand","authors":"Sachin Kumar, Susheel Sandhu, A. Patel, Ketan Parmar","doi":"10.14314/polimery.2022.5.2","DOIUrl":"https://doi.org/10.14314/polimery.2022.5.2","url":null,"abstract":"N,N’-bis(2,4-dimethoxybenzylidene)ethylenediamine was synthesized and used as a membrane carrier to create a novel poly(vinyl chloride) membrane potentiometric sensor that is selective especially for Fe3+ ions. The super-Nernstian slope of the projected sensor was 19.5 mV per decade over a concentration range of 7.3·10−8 –1·10−1 M having detection limit at 7.3·10−8 M. The sensor displayed a linear potential response for the detection of Fe3+ ions in about 30 seconds, and it had a lifespan of no less than 9 weeks without lacking any potential divergence. The selected sensor showed high selectivity in water solutions in relation to Fe3 + ions, even in the presence of other metal cations in the pH range of 3.6–10.\u0000 ","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48716679","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 : 2022-06-10DOI: 10.14314/polimery.2022.5.1
Abhinav Srivastava, Atul Kumar Srivasatva, Ashutosh Singh, Priti Singh, S. Verma, M. Vats, S. Sagadevan
Based on the review of 115 literature items, the article presents biopolymers as renewable polymer materials for sustainable development. The types of biopolymers and their applications are discussed, including biopolymers based on starch, cellulose, bacteria, soy and natural polyester. It also describes the issues of biocompatibility, the principles of sustainable chemistry and sustainable development, as well as market trends and future application directions.
{"title":"Biopolymers as renewable polymeric materials for sustainable development - an overview","authors":"Abhinav Srivastava, Atul Kumar Srivasatva, Ashutosh Singh, Priti Singh, S. Verma, M. Vats, S. Sagadevan","doi":"10.14314/polimery.2022.5.1","DOIUrl":"https://doi.org/10.14314/polimery.2022.5.1","url":null,"abstract":"Based on the review of 115 literature items, the article presents biopolymers as renewable polymer materials for sustainable development. The types of biopolymers and their applications are discussed, including biopolymers based on starch, cellulose, bacteria, soy and natural polyester. It also describes the issues of biocompatibility, the principles of sustainable chemistry and sustainable development, as well as market trends and future application directions.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41650499","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 : 2022-05-17DOI: 10.14314/polimery.2022.4.3
Barbara Dach, M. Bryjak, J. Bryjak, Rafał Łużny
The synthesis and properties of core-shell sorbents dedicated to the removal of borates from aqueous solutions were described. By modification of polymer matrices with vinylbenzyl chloride followed by its derivatization with N-methyl glucamine a new kind of sorbents were obtained. The testing of boron sorption reviled that the process efficiency was related to the pore diameter and the content of ligand in the sorbent. The best material for use in a hybrid system, where boron is absorbed by fine particles and removed in microfiltration, was Poropak Q with a specific surface area of 300 m2/g.
{"title":"New boron selective sorbents for sorption – membrane hybrid system","authors":"Barbara Dach, M. Bryjak, J. Bryjak, Rafał Łużny","doi":"10.14314/polimery.2022.4.3","DOIUrl":"https://doi.org/10.14314/polimery.2022.4.3","url":null,"abstract":"The synthesis and properties of core-shell sorbents dedicated to the removal of borates from aqueous solutions were described. By modification of polymer matrices with vinylbenzyl chloride followed by its derivatization with N-methyl glucamine a new kind of sorbents were obtained. The testing of boron sorption reviled that the process efficiency was related to the pore diameter and the content of ligand in the sorbent. The best material for use in a hybrid system, where boron is absorbed by fine particles and removed in microfiltration, was Poropak Q with a specific surface area of 300 m2/g. ","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45060954","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 : 2022-05-13DOI: 10.14314/polimery.2022.4.1
Omar Alsadon, D. Wood, D. Patrick, Durgesh Bangalore, S. Pollington
In this study, the optical properties of indirect dental restorations based on poly-ether-ketone-ketone (PEKK), zirconia (YZ), and nickel-chromium (Ni-Cr) veneered with composite were compared. Based on the spectral reflectance, the CIE L*a*b* color coordinates, the color difference (ΔE), the opacity and the translucency parameter (TP) were determined using a spectrophotometer equipped with a D65 illuminant. The PEKK and Ni-Cr groups demonstrated similar CIE L*a*b* color values on white and black backgrounds. However, the zirconia group on a white backgrounds showed a slight shift in values towards red-yellow shades. The highest recorded ∆E values were 1.3 and 1.61 between PEKK and YZ groups, and Ni-Cr and YZ groups respectively. The opacity and translucency (TP) parameters were consistent with the spectral reflectance data, with the Ni-Cr and PEKK groups being completely opaque (100% and 0 TP). It has been shown that the use of the same indirect light-cured composite veneer with different substructure materials has no clinical effect on the esthetics of the final restoration.
{"title":"Optical properties of polyetherketoneketone based indirect dental restorations veneered with composite","authors":"Omar Alsadon, D. Wood, D. Patrick, Durgesh Bangalore, S. Pollington","doi":"10.14314/polimery.2022.4.1","DOIUrl":"https://doi.org/10.14314/polimery.2022.4.1","url":null,"abstract":"In this study, the optical properties of indirect dental restorations based on poly-ether-ketone-ketone (PEKK), zirconia (YZ), and nickel-chromium (Ni-Cr) veneered with composite were compared. Based on the spectral reflectance, the CIE L*a*b* color coordinates, the color difference (ΔE), the opacity and the translucency parameter (TP) were determined using a spectrophotometer equipped with a D65 illuminant. The PEKK and Ni-Cr groups demonstrated similar CIE L*a*b* color values on white and black backgrounds. However, the zirconia group on a white backgrounds showed a slight shift in values towards red-yellow shades. The highest recorded ∆E values were 1.3 and 1.61 between PEKK and YZ groups, and Ni-Cr and YZ groups respectively. The opacity and translucency (TP) parameters were consistent with the spectral reflectance data, with the Ni-Cr and PEKK groups being completely opaque (100% and 0 TP). It has been shown that the use of the same indirect light-cured composite veneer with different substructure materials has no clinical effect on the esthetics of the final restoration.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47667377","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 : 2022-05-13DOI: 10.14314/polimery.2022.4.2
S. Sarraj, M. Szymiczek
An organosilicon polymer was developed for the release of antimicrobial drugs. The influence of the drug itraconazole (Itrax) on polymer properties such as density, hardness, rebound resilience, tensile strength, accelerated aging, structure and antifungal activity was investigated. There were slight changes in physicochemical properties and significant deterioration of mechanical ones. The evaluation of the fungicidal activity showed time-limited antifungal properties.
{"title":"Organosilicon polymer for the release of antimicrobial drugs","authors":"S. Sarraj, M. Szymiczek","doi":"10.14314/polimery.2022.4.2","DOIUrl":"https://doi.org/10.14314/polimery.2022.4.2","url":null,"abstract":"An organosilicon polymer was developed for the release of antimicrobial drugs. The influence of the drug itraconazole (Itrax) on polymer properties such as density, hardness, rebound resilience, tensile strength, accelerated aging, structure and antifungal activity was investigated. There were slight changes in physicochemical properties and significant deterioration of mechanical ones. The evaluation of the fungicidal activity showed time-limited antifungal properties.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43368588","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 : 2022-04-27DOI: 10.14314/polimery.2022.4.4
P. Turek
Making a template or implant for surgery is not a simple task. This is especially true of the craniofacial area, which consists of bone tissues with a very complex geometry. Titanium alloys are still used in medicine as implantable materials. However, due to the continuous improvement of mechanical and functional properties, the scope of polymeric materials application in medicine is expanding. Each model used directly or indirectly during a surgical procedure must meet many conditions. One of them is to obtain the appropriate condition of the surface layer, which has a significant impact on the reactions between the applied surgical template or implant and the living organism. Knowledge of the printed models made of polymeric materials surface roughness parameters may allow the targeted modification planning of the surface layer, allowing better application during the procedure. In this study, the research on the comparative analysis of the obtained values of surface roughness parameters of the anatomical structures of the mandible made of selected polymer materials with the use of additive techniques was presented. In the research process, the following materials were used: polylactic acid (PLA), polycarbonate (PC), three photo polyacrylic resins (marked in the manuscript as AR1, AR2 and AR3) and polyamide (PA11). On the basis of them, physical models of the mandible lateral sections were made using 3D printing techniques. Measurements of the model surfaces geometric structure were carried out using a 3D contact profilometer. In the process of determining the surface roughness, the measurement data was filtered in accordance with the ISO 4288 standard. As a final result, selected amplitude parameters and three-dimensional visualization of the surface roughness of the tested models were presented.
{"title":"Evaluation of surface roughness parameters of anatomical structures models of the mandible made with additive techniques from selected polymeric materials","authors":"P. Turek","doi":"10.14314/polimery.2022.4.4","DOIUrl":"https://doi.org/10.14314/polimery.2022.4.4","url":null,"abstract":"Making a template or implant for surgery is not a simple task. This is especially true of the craniofacial area, which consists of bone tissues with a very complex geometry. Titanium alloys are still used in medicine as implantable materials. However, due to the continuous improvement of mechanical and functional properties, the scope of polymeric materials application in medicine is expanding. Each model used directly or indirectly during a surgical procedure must meet many conditions. One of them is to obtain the appropriate condition of the surface layer, which has a significant impact on the reactions between the applied surgical template or implant and the living organism. Knowledge of the printed models made of polymeric materials surface roughness parameters may allow the targeted modification planning of the surface layer, allowing better application during the procedure. In this study, the research on the comparative analysis of the obtained values of surface roughness parameters of the anatomical structures of the mandible made of selected polymer materials with the use of additive techniques was presented. In the research process, the following materials were used: polylactic acid (PLA), polycarbonate (PC), three photo polyacrylic resins (marked in the manuscript as AR1, AR2 and AR3) and polyamide (PA11). On the basis of them, physical models of the mandible lateral sections were made using 3D printing techniques. Measurements of the model surfaces geometric structure were carried out using a 3D contact profilometer. In the process of determining the surface roughness, the measurement data was filtered in accordance with the ISO 4288 standard. As a final result, selected amplitude parameters and three-dimensional visualization of the surface roughness of the tested models were presented.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46837188","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 : 2022-04-19DOI: 10.14314/polimery.2022.3.1
T. Kittikorn, E. Strömberg, M. Ek, S. Karlsson
The effect of modification of sisal fibre with propionic anhydride and vinyltrimethoxy silane on the microbiological stability of poly(hydroxybutyrate-co-valerate) (PHBV) was investigated. The effect of the coupling agent – PHBV grafted with maleic anhydride (PHBV-g-MA) was also investigated. The best adhesion at the interface was observed for propionylation of sisal fibre, which improved the thermal properties of the composites. Composites with modified sisal fibre were characterized by higher activation energy (155 kJ/mol), which is related to stronger interactions at the matrix-fibre interface. In the microbial growth test, all biocomposites showed a decrease in molecular weight due to enzymatic degradation by Aspergillus niger. The most resistant to microorganisms was the composite containing propionylated sisal fibre. DMTA and TGA also confirmed the highest microbiological stability of the composite with the addition of propionylated sisal fibre, as evidenced by the smallest change in the properties after the microbiological growth test. In contrast, PHBV-g-MA caused significant enzymatic degradation due to the presence of large amorphous regions.
{"title":"Influence of sisal fibre modification on the microbial stability of poly(hydroxybutyrate-co-valerate): thermal analysis","authors":"T. Kittikorn, E. Strömberg, M. Ek, S. Karlsson","doi":"10.14314/polimery.2022.3.1","DOIUrl":"https://doi.org/10.14314/polimery.2022.3.1","url":null,"abstract":"The effect of modification of sisal fibre with propionic anhydride and vinyltrimethoxy silane on the microbiological stability of poly(hydroxybutyrate-co-valerate) (PHBV) was investigated. The effect of the coupling agent – PHBV grafted with maleic anhydride (PHBV-g-MA) was also investigated. The best adhesion at the interface was observed for propionylation of sisal fibre, which improved the thermal properties of the composites. Composites with modified sisal fibre were characterized by higher activation energy (155 kJ/mol), which is related to stronger interactions at the matrix-fibre interface. In the microbial growth test, all biocomposites showed a decrease in molecular weight due to enzymatic degradation by Aspergillus niger. The most resistant to microorganisms was the composite containing propionylated sisal fibre. DMTA and TGA also confirmed the highest microbiological stability of the composite with the addition of propionylated sisal fibre, as evidenced by the smallest change in the properties after the microbiological growth test. In contrast, PHBV-g-MA caused significant enzymatic degradation due to the presence of large amorphous regions.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42578024","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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