紫外光辐射接枝及胺化法制备温敏性聚乙烯薄膜

摘要

In the experiments, acrylic acid (AAC) was grafted on the surface of polyethylene (PE) film by ultraviolet (UV) radiation, and amination reaction was used to continuously introduce functional group on the modified acrylic acid polyethylene (AAC-g-PE) film, to make it sensitive to temperature. The effect of UV irradiation time and amount of initiator in the grafting on grafting ratio was investigated. The temperature sensitivity of modified PE film using the different amination agents were compared to reach the experimental purpose. Infrared spectrum and dimension changing rate were used to identify if the AAC had been grafted on the PE film. After the amination reaction, using the two different initiator agents, poly N-isopropyl acrylamide polymerized polyethylene (PNIAAm-g-PE) film and poly N-propyl acrylamide polymerized polyethylene (NNPA-g-PE) were found to be thermo sensitivity.%实验探索在水性体系中经紫外光辐射，引发丙烯酸（AAC）在聚乙烯（PE）薄膜表面接枝，并经过胺化反应，在已改性的丙烯酸-聚乙烯（AAC-g-PE）薄膜上继续引入功能团，使改性后的PE薄膜具有温度敏感性。考察了引发剂用量、紫外光照射时间对接枝率的影响，并对不同胺化剂合成产物的温敏效应进行比较，从而达到实验目的。通过红外光谱和尺寸变化率证明丙烯酸接枝在PE表面，胺化反应后，生成聚N-异丙基丙烯酰胺聚合聚乙烯（PNIAAm-g-PE）薄膜和聚N-正丙基丙烯酰胺聚乙烯（NNPA-g-PE）薄膜具有温敏性。