Reham A. Abdel-Monem, Samir T. Gaballah, Samira T. Rabie
{"title":"利用卤代苯并噻唑衍生物和葡萄糖/脂肪酸酯提高环保型聚氯乙烯的性能","authors":"Reham A. Abdel-Monem, Samir T. Gaballah, Samira T. Rabie","doi":"10.1002/vnl.22059","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <p>Two halo-benzothiazoles, namely, 2-amino-6-bromo-benzo[<i>d</i>]thiazole and 2-amino-6-fluoro-benzo[<i>d</i>]thiazole were utilized to modify poly(vinyl chloride) (PVC) and gave two modified PVC samples for biomedical applications. Prepared glucose-fatty acid esters of palmitic, oleic, and octanoic acids were exploited as plasticizers to produce phthalate-free eco-friendly antimicrobial PVC. The chemical structures of all prepared compounds were confirmed via Fourier-transform infrared spectroscopy. The thermal properties of modified PVC was determined using thermo gravimetric analysis and differential scanning calorimetry while weight loss and degree of discoloration were used to assess the photostability after UV irradiation whereas references heat and UV absorbers were applied for comparison. The plasticizing effect of each glucose-fatty acid ester at 20% by weight on the mechanical properties of modified PVC was determined and referenced to diethylhexylphthalate. The results revealed that the mechanical properties as well as the thermal stability of plasticized modified PVCs were enhanced. Plasticizers migration from the polymeric matrix was also determined and the results showed low extent of migration of the prepared plasticizers. So, modified plasticized PVC samples exhibited improved physicochemical properties. Antimicrobial properties of all samples, using disc diffusion agar method, were evaluated against some Gram +ve bacteria like <i>Staphylococcus aureus</i> and <i>Streptococcus mutans</i> and Gram −ve bacteria like <i>Escherichia coli</i>, <i>Klebsiella pneumonia</i>, and <i>Pseudomonas aeruginosa</i> and fungi strains used were <i>Candida albicans</i>, <i>Aspergillus niger</i>, and <i>Aspergillus ochraceous</i>. All investigated compounds showed improved antibacterial and antifungal activities.</p>\n </section>\n \n <section>\n \n <h3> Highlights</h3>\n \n <div>\n <ul>\n \n <li>PVC was chemically modified with two halo-benzothiazoles to obtain antimicrobial PVC.</li>\n \n <li>Glucose-fatty acids esters were prepared as eco-friendly plasticizers for PVC.</li>\n \n <li>Halo-benzothiazoles improved both the thermal- and photo-stability of PVC.</li>\n \n <li>Glucose-fatty acid plasticizers enhanced the mechanical properties of PVC.</li>\n \n <li>The extent of migration of prepared plasticizers is lower than that of reference plasticizer.</li>\n </ul>\n </div>\n </section>\n </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 2","pages":"439-455"},"PeriodicalIF":3.8000,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced performance of eco-friendly PVC by utilizing halo-benzothiazole derivatives and glucose/fatty acids esters\",\"authors\":\"Reham A. 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The plasticizing effect of each glucose-fatty acid ester at 20% by weight on the mechanical properties of modified PVC was determined and referenced to diethylhexylphthalate. The results revealed that the mechanical properties as well as the thermal stability of plasticized modified PVCs were enhanced. Plasticizers migration from the polymeric matrix was also determined and the results showed low extent of migration of the prepared plasticizers. So, modified plasticized PVC samples exhibited improved physicochemical properties. Antimicrobial properties of all samples, using disc diffusion agar method, were evaluated against some Gram +ve bacteria like <i>Staphylococcus aureus</i> and <i>Streptococcus mutans</i> and Gram −ve bacteria like <i>Escherichia coli</i>, <i>Klebsiella pneumonia</i>, and <i>Pseudomonas aeruginosa</i> and fungi strains used were <i>Candida albicans</i>, <i>Aspergillus niger</i>, and <i>Aspergillus ochraceous</i>. 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Enhanced performance of eco-friendly PVC by utilizing halo-benzothiazole derivatives and glucose/fatty acids esters
Two halo-benzothiazoles, namely, 2-amino-6-bromo-benzo[d]thiazole and 2-amino-6-fluoro-benzo[d]thiazole were utilized to modify poly(vinyl chloride) (PVC) and gave two modified PVC samples for biomedical applications. Prepared glucose-fatty acid esters of palmitic, oleic, and octanoic acids were exploited as plasticizers to produce phthalate-free eco-friendly antimicrobial PVC. The chemical structures of all prepared compounds were confirmed via Fourier-transform infrared spectroscopy. The thermal properties of modified PVC was determined using thermo gravimetric analysis and differential scanning calorimetry while weight loss and degree of discoloration were used to assess the photostability after UV irradiation whereas references heat and UV absorbers were applied for comparison. The plasticizing effect of each glucose-fatty acid ester at 20% by weight on the mechanical properties of modified PVC was determined and referenced to diethylhexylphthalate. The results revealed that the mechanical properties as well as the thermal stability of plasticized modified PVCs were enhanced. Plasticizers migration from the polymeric matrix was also determined and the results showed low extent of migration of the prepared plasticizers. So, modified plasticized PVC samples exhibited improved physicochemical properties. Antimicrobial properties of all samples, using disc diffusion agar method, were evaluated against some Gram +ve bacteria like Staphylococcus aureus and Streptococcus mutans and Gram −ve bacteria like Escherichia coli, Klebsiella pneumonia, and Pseudomonas aeruginosa and fungi strains used were Candida albicans, Aspergillus niger, and Aspergillus ochraceous. All investigated compounds showed improved antibacterial and antifungal activities.
Highlights
PVC was chemically modified with two halo-benzothiazoles to obtain antimicrobial PVC.
Glucose-fatty acids esters were prepared as eco-friendly plasticizers for PVC.
Halo-benzothiazoles improved both the thermal- and photo-stability of PVC.
Glucose-fatty acid plasticizers enhanced the mechanical properties of PVC.
The extent of migration of prepared plasticizers is lower than that of reference plasticizer.
期刊介绍：
Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.
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