Surface characterization and antibacterial activity of chitosan-grafted poly(ethylene terephthalate) prepared by plasma glow discharge
Surface characterization and antibacterial activity of chitosan-grafted poly(ethylene terephthalate) prepared by plasma glow discharge
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DOI：
10.1002/app.1723
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发表时间：
2001-09-12
影响因子：
3
通讯作者：
Seo, KH
中科院分区：
文献类型：
--
作者：
Huh, MW;Kang, IK;Seo, KH
聚对苯二甲酸乙二醇酯 (PET) 纹理暴露于氧等离子体辉光放电，在其表面产生过氧化物。然后将这些过氧化物用作丙烯酸（AA）聚合的催化剂，以制备引入羧酸基团的PET（PET-A）。然后将壳聚糖和季铵化壳聚糖(QC)与PET-A上的羧基偶联，分别获得壳聚糖接枝PET(PET-A-C)和QC接枝PET(PET-A-QC)。这些表面改性的 PET 通过衰减全反射傅里叶变换红外光谱、用于化学分析的电子光谱和接触角测角仪进行了表征。通过重量分析法测得PET表面接枝的AA、壳聚糖和QC的量分别约为6、8和9μg/cm(2)。采用摇瓶法研究了表面改性 PET 织物的抗菌活性。振荡6小时后，离子接枝壳聚糖（PET-A(-)-C(+)中86%）和共价接枝壳聚糖（PET-A-C中75%）以及共价接枝QC（PET-A-QC中83%）的PET显着抑制细菌生长。洗涤后，细菌生长的抑制率维持在48-58%的范围内，显示了壳聚糖接枝PET纹理的耐洗涤牢度。 (C) 2001 约翰威利父子公司
Poly(ethylene terephthalate) (PET) texture was exposed to oxygen plasma glow discharge to produce peroxides on its surfaces. These peroxides were then used as catalysts for the polymerization of acrylic acid (AA) in order to prepare a PET introduced by a carboxylic acid group (PET-A). Chitosan and quaternized chitosan (QC) were then coupled with the carboxyl groups on the PET-A to obtain chitosan-grafted PET (PET-A-C) and QC-grafted PET (PET-A-QC), respectively. These surface-modified PETs were characterized by attenuated total reflection Fourier transform IR spectroscopy, electron spectroscopy for chemical analysis, and a contact angle goniometer. The amounts of AA, chitosan, and QC grafted on the PET surfaces as determined by the gravimetric method were about 6, 8, and 9 mug/cm(2), respectively. The antibacterial activity of the surface-modified PET textures was investigated using a shake flask method. After 6 h of shaking, the growth of bacteria was markedly inhibited by PET with ionically (86% in PET-A(-)-C(+)) and covalently (75% in PET-A-C) grafted chitosan and with covalently grafted QC (83% in PET-A-QC). After the laundering the inhibition of the growth of the bacteria was maintained in the range of 48-58%, showing the fastness of the chitosan-grafted PET textures against laundering. (C) 2001 John Wiley & Sons, Inc.