Enhanced performance of eco-friendly PVC by utilizing halo-benzothiazole derivatives and glucose/fatty acids esters

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2023-10-19 DOI:10.1002/vnl.22059

Reham A. Abdel-Monem, Samir T. Gaballah, Samira T. Rabie

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引用次数: 0

Abstract

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.

Abstract Image

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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

利用两种卤代苯并噻唑，即 2-氨基-6-溴-苯并[d]噻唑和 2-氨基-6-氟-苯并[d]噻唑对聚（氯乙烯）（PVC）进行改性，制备出两种生物医学应用的改性 PVC 样品。制备的棕榈酸、油酸和辛酸的葡萄糖脂肪酸酯被用作增塑剂，生产出不含邻苯二甲酸盐的环保型抗菌聚氯乙烯。所有制备化合物的化学结构都通过傅立叶变换红外光谱进行了确认。使用热重分析和差示扫描量热法测定了改性聚氯乙烯的热性能，同时使用失重和褪色程度评估了紫外线照射后的光稳定性，并使用热吸收剂和紫外线吸收剂进行比较。以邻苯二甲酸二乙基己酯为参照，测定了每种葡萄糖脂肪酸酯（重量百分比为 20%）对改性聚氯乙烯机械性能的增塑作用。结果表明，增塑改性聚氯乙烯的机械性能和热稳定性均有所提高。此外，还测定了增塑剂从聚合物基体中的迁移情况，结果表明制备的增塑剂迁移程度较低。因此，改性增塑聚氯乙烯样品的理化性能得到了改善。使用圆盘扩散琼脂法评估了所有样品的抗菌性能，包括对金黄色葡萄球菌、变异链球菌等革兰氏阳性细菌和大肠埃希菌、肺炎克雷伯氏菌、铜绿假单胞菌等革兰氏阴性细菌的抗菌性能，以及对白色念珠菌、黑曲霉和赭曲霉等真菌菌株的抗菌性能。所有研究化合物的抗菌和抗真菌活性都有所提高。用两种卤代苯并噻唑对高亮度聚氯乙烯进行化学改性，得到了抗菌聚氯乙烯。制备的葡萄糖脂肪酸酯是 PVC 的环保增塑剂。卤代苯并噻唑改善了聚氯乙烯的热稳定性和光稳定性。葡萄糖-脂肪酸增塑剂提高了聚氯乙烯的机械性能。制备的增塑剂的迁移程度低于参考增塑剂。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

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.