【作者】 赵洪池；

【导师】 杨万泰；

【作者基本信息】 北京化工大学 ， 高分子化学与物理， 2006， 博士

【摘要】 在有机聚合物材料表面引入单层羟基有着重要的意义：羟基除了可以增大聚合物的表面自由能，改善聚合物表面的性能外，还可以和多种化合物反应，从而达到对表面进一步改性和功能化的目的；同时还可以为聚合物膜表面的自组装以及蛋白质在聚合物表面的功能化提供基础。本论文的主要工作如下： 1、基于已经报道在聚合物表面引入硫酸根阴离子基团的方法，利用水解反应将硫酸根阴离子基团转变成羟基。水接触角测试结果表明在30℃水解14小时，静态水接触角基本保持稳定，水解反应达到平衡；利用三氟乙酸酐衍生化反应证实了表面羟基的存在；利用X-射线光电子能谱(XPS)考察了硫酸根阴离子基团转变成羟基的百分率：对于双向拉伸聚丙烯膜(BOPP)、低密度聚乙烯膜和聚对苯二甲酸乙二醇酯膜转化率分别为50.6、62.1和46.0％。利用水接触角研究了光照时间、紫外光强度和过硫酸铵(APS)浓度对羟基化的影响，光照时间增加、紫外光强度增大和APS浓度增大都使羟基化BOPP膜水接触角降低。 2、将羟基化BOPP膜(BOPP-OH)表面的羟基和利用紫外光辐照二苯甲酮偶合到BOPP膜(BOPP-BPOH)表面所生成的羟基作为原始反应位，通过对苯二甲酰氯(TPC)／双酚A(BPA)和TPC／对苯二胺(PPD)化学键组装制备了以共价键结合的、稳定的、分子水平的多层组装膜。通过紫外-更多还原

【Abstract】 It was significant that hydroxyl groups were introduced onto polymer surface. Hydroxyl groups not only could increase the polymer surface free energy and improve the polymer surface property, but also could react with many kinds of compounds in order to further modify polymer surface; at the same time, hydroxyl groups on polymer surface provided a foundation for self-assembly and protein functionalization. The main contents of this thesis were as follows:1. Hydroxylation was proceeded by hydrolysis of the sulfate anion groups which were developed from previous work. The hydrolysis reaction could be monitored by measuring the static water contact angle (CA) of the hydrolyzed film. At beginning, CA underwent a significant increase, then increased gradually and leveled off after about 14 hr; the trifluoroacetic anhydride derivatization reaction was used to confirm hydroxyl groups on the surface. The conversion of sulfate anion groups to hydroxyl groups was measured by X-ray photoelectron spectroscopy (XPS): the conversions were 50.6% on BOPP (biaxially oriented polypropylene), 62.1% on LDPE (low-density更多还原