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Surface Grafting of a Quaternary Ammonium Salt on Macroporous Polyvinyl Alcohol-Formaldehyde Sponges and Their Highly Efficient Antibacterial Performance
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-09-15 , DOI: 10.1021/acsapm.0c00822 Di Sha 1, 2 , Xu Yang 1, 2 , Baolong Wang 1 , Xue Liu 1 , Chunxia Li 3 , Yongkang Tang 3 , Min Wei 3 , Zhiwei Liang 3 , Hua Wei 4 , Jiuduo Xu 1 , Kai Shi 1 , Xiangling Ji 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-09-15 , DOI: 10.1021/acsapm.0c00822 Di Sha 1, 2 , Xu Yang 1, 2 , Baolong Wang 1 , Xue Liu 1 , Chunxia Li 3 , Yongkang Tang 3 , Min Wei 3 , Zhiwei Liang 3 , Hua Wei 4 , Jiuduo Xu 1 , Kai Shi 1 , Xiangling Ji 1
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A quaternary ammonium salt (QA), epoxypropyl-N,N-dimethyldodecylammonium chloride (EDAC), is grafted on macroporous polyvinyl alcohol-formaldehyde (PVF) sponges via facile reaction conditions. The grafting percentage (GP) of QA is influenced by the reaction temperature, time, and catalyst concentration, and the optimal GP can reach up to 43.3%. As-prepared PVF-g-QA sponges show average pore size in the range of 60–90 μm and high porosity above 80%. Meanwhile, the resultant PVF-g-QA samples also display a high water absorption capacity approximately 12.4–14.2 g/g and reach dynamic absorption equilibrium quickly within only 1 min in both saline solution and deionized water. Notably, the antibacterial performance of these sponges for both E. coli and S. aureus are excellent with a reduction of four orders of magnitude compared with a high initial concentration of bacteria (108 CFU/mL). Moreover, the as-prepared samples with different grafting percentages almost have no cytotoxicity for cells. The PVF-g-QA sponges can serve as a candidate for wound dressings for medical and sanitary applications.
中文翻译：
季铵盐在大孔聚乙烯醇-甲醛海绵上的表面接枝及其高效抗菌性能
通过便利的反应条件，将季铵盐（QA）环氧丙基-N，N-二甲基十二烷基氯化铵（EDAC）接枝到大孔聚乙烯醇-甲醛（PVF）海绵上。QA的接枝率（GP）受反应温度，时间和催化剂浓度的影响，最佳GP可达43.3％。制备的PVF- g -QA海绵的平均孔径在60-90μm范围内，且孔隙率超过80％。同时，所得的PVF- g-QA样品还显示出约12.4–14.2 g / g的高吸水量，并且在盐溶液和去离子水中仅1分钟内即可迅速达到动态吸收平衡。值得注意的是，与高初始细菌浓度（10 8 CFU / mL）相比，这些海绵对大肠杆菌和金黄色葡萄球菌的抗菌性能极佳，减少了四个数量级。而且，所制备的具有不同移植百分比的样品几乎对细胞没有细胞毒性。PVF- g -QA海绵可以用作医疗和卫生应用伤口敷料的候选材料。
更新日期：2020-11-13
中文翻译：
季铵盐在大孔聚乙烯醇-甲醛海绵上的表面接枝及其高效抗菌性能
通过便利的反应条件，将季铵盐（QA）环氧丙基-N，N-二甲基十二烷基氯化铵（EDAC）接枝到大孔聚乙烯醇-甲醛（PVF）海绵上。QA的接枝率（GP）受反应温度，时间和催化剂浓度的影响，最佳GP可达43.3％。制备的PVF- g -QA海绵的平均孔径在60-90μm范围内，且孔隙率超过80％。同时，所得的PVF- g-QA样品还显示出约12.4–14.2 g / g的高吸水量，并且在盐溶液和去离子水中仅1分钟内即可迅速达到动态吸收平衡。值得注意的是，与高初始细菌浓度（10 8 CFU / mL）相比，这些海绵对大肠杆菌和金黄色葡萄球菌的抗菌性能极佳，减少了四个数量级。而且，所制备的具有不同移植百分比的样品几乎对细胞没有细胞毒性。PVF- g -QA海绵可以用作医疗和卫生应用伤口敷料的候选材料。
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