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首页> 外文期刊>Journal of Applied Polymer Science >Photografting of methacrylic acid on polyethylene film: Effect of mixed solvents consisting of water and organic solvent
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Photografting of methacrylic acid on polyethylene film: Effect of mixed solvents consisting of water and organic solvent

机译：甲基丙烯酸在聚乙烯薄膜上的光接枝：由水和有机溶剂组成的混合溶剂的作用

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Photografting of methacrylic acid (MAA) on linear low-density polyethylene film (thickness = 30 mum) was investigated at 60degreesC in mixed solvents consisting of water and organic solvent with xanthone as the photoiniator. The organic solvents examined were acetone, methanol, tetrahydrofuran, and dioxane. A maximum percentage of grafting was observed at a certain concentration of organic solvent in the mixed solvent, depending on the nature of the organic solvent. Distribution of the grafted chains in the resultant MAA-grafted film, which was examined by scanning electron microscopy and attenuated total-reflection IR spectroscopy, was largely influenced by the use of the mixed solvent. The grafted samples swelled in the alkaline region and shrank in acidic medium, showing a pH-responsive character. The extent of the pH-responsive function was closely related to the location of grafted chains, which could be controlled by proper choice of the composition of organic solvent in the mixed solvent. (C) 2002 John Wiley Sons, Inc. [References: 34]
机译：研究了甲基丙烯酸（MAA）在线性低密度聚乙烯薄膜（厚度= 30微米）上在60摄氏度下在水和有机溶剂（以x吨酮为光敏剂）组成的混合溶剂中的光接枝。检查的有机溶剂为丙酮，甲醇，四氢呋喃和二恶烷。根据有机溶剂的性质，在混合溶剂中一定浓度的有机溶剂中观察到最大接枝百分比。混合溶剂的使用极大地影响了所得MAA接枝膜中接枝链的分布，这是通过扫描电子显微镜和衰减全反射红外光谱法检查的。接枝的样品在碱性区域膨胀并在酸性介质中收缩，表现出pH响应特性。 pH响应功能的程度与接枝链的位置密切相关，这可以通过适当选择混合溶剂中有机溶剂的组成来控制。 （C）2002 John Wiley Sons，Inc. [参考：34]

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