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Adenine functionalized antibacterial PVC with both photo and thermal stability
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-05-20 , DOI: 10.1002/vnl.21827 Reham A. Abdel‐Monem 1 , Ahmed A. El‐Sayed 1 , Ahmed E. Abdelhamid 2 , Samira T. Rabie 1
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-05-20 , DOI: 10.1002/vnl.21827 Reham A. Abdel‐Monem 1 , Ahmed A. El‐Sayed 1 , Ahmed E. Abdelhamid 2 , Samira T. Rabie 1
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Adenine was used as a precursor to obtain antibacterial poly(vinyl chloride) (PVC). Adenine functionalized PVC has been prepared, characterized, and its antibacterial activity was evaluated. Chemical modification reaction of PVC was performed with adenine in two molar ratios (2:1 and 4:1). Fourier-transform infrared spectroscopy and 1HNMR spectroscopic analyses confirmed the chemical structure of the adenine-modified PVC and indicated the incorporation of adenine molecule in the backbone chains of PVC. Photostability of the prepared modified PVC was determined by measuring the changes in molecular weights using Gel permeation chromatography technique as well as the extent of discoloration of UV irradiated samples while thermal stability was studied by measuring the rate of dehydrochlorination and thermogravimetric analysis. Morphological investigation in terms of scanning electron microscopy was studied. Antibacterial activities of the two modified PVC samples were investigated against two types of Gram-positive bacterial strains (Bacillus subtitles, Staphylococcus aurous, and Streptococcus faecalis) while the other types (Escherichia coli, Neisseria gonorrhea, and Pseudomonas aeruginosa) represented the Gram-negative type bacteria. Antibacterial activity of PVC-adenine blend was also investigated for comparison. Minimum inhibition concentration was performed for some PVC samples under study.
中文翻译：
具有光和热稳定性的腺嘌呤功能化抗菌PVC
腺嘌呤被用作前体以获得抗菌聚（氯乙烯）（PVC）。已经制备、表征了腺嘌呤官能化PVC，并评价了其抗菌活性。PVC 的化学改性反应是与腺嘌呤以两种摩尔比（2:1 和 4:1）进行的。傅里叶变换红外光谱和1HNMR 光谱分析证实了腺嘌呤改性 PVC 的化学结构，并表明在 PVC 的主链中掺入了腺嘌呤分子。制备的改性 PVC 的光稳定性通过使用凝胶渗透色谱技术测量分子量的变化以及紫外线照射样品的变色程度来确定，而热稳定性通过测量脱氯化氢速率和热重分析来研究。研究了扫描电子显微镜的形态学研究。研究了两种改性 PVC 样品对两种革兰氏阳性细菌菌株（芽孢杆菌、金黄色葡萄球菌和粪链球菌）的抗菌活性）而其他类型（大肠杆菌、淋病奈瑟菌和铜绿假单胞菌）代表革兰氏阴性菌。还研究了 PVC-腺嘌呤混合物的抗菌活性以进行比较。对一些正在研究的 PVC 样品进行了最小抑制浓度。
更新日期：2021-05-20
中文翻译：
具有光和热稳定性的腺嘌呤功能化抗菌PVC
腺嘌呤被用作前体以获得抗菌聚（氯乙烯）（PVC）。已经制备、表征了腺嘌呤官能化PVC，并评价了其抗菌活性。PVC 的化学改性反应是与腺嘌呤以两种摩尔比（2:1 和 4:1）进行的。傅里叶变换红外光谱和1HNMR 光谱分析证实了腺嘌呤改性 PVC 的化学结构，并表明在 PVC 的主链中掺入了腺嘌呤分子。制备的改性 PVC 的光稳定性通过使用凝胶渗透色谱技术测量分子量的变化以及紫外线照射样品的变色程度来确定，而热稳定性通过测量脱氯化氢速率和热重分析来研究。研究了扫描电子显微镜的形态学研究。研究了两种改性 PVC 样品对两种革兰氏阳性细菌菌株（芽孢杆菌、金黄色葡萄球菌和粪链球菌）的抗菌活性）而其他类型（大肠杆菌、淋病奈瑟菌和铜绿假单胞菌）代表革兰氏阴性菌。还研究了 PVC-腺嘌呤混合物的抗菌活性以进行比较。对一些正在研究的 PVC 样品进行了最小抑制浓度。
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