Melt-photografting polymerization of maleic anhydride onto LDPE film
Melt-photografting polymerization of maleic anhydride onto LDPE film
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DOI：
10.1016/s0014-3057(02)00004-6
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发表时间：
2002-07-01
影响因子：
6
通讯作者：
Rånby, B
中科院分区：
文献类型：
--
作者：
Deng, JP;Yang, WT;Rånby, B
在高于马来酸酐熔点的温度下，将马来酸酐（MAH）光接枝到低密度聚乙烯衬底上。研究了辐照温度、光引发剂、紫外辐射强度和远紫外辐射等主要因素对接枝聚合反应的影响。用重量法测定了聚合产物的转化率和接枝效率。测定了接枝膜PE-g-PMAH对水的接触角和接枝膜的FTIR光谱作为表征。结果表明：在高于MAH熔点的温度下，MAH的光接枝聚合可以顺利进行；远紫外辐射和紫外辐射强度对接枝聚合反应影响较大；光引发剂对聚合也有影响。根据红外光谱，可以清楚地证实接枝膜样品中含有酸酐基团。接触角表明，接枝膜的润湿性明显增强，特别是对水解接枝膜样品的润湿性。(C) 2002 Elsevier Science Ltd.版权所有。
Maleic anhydride (MAH) was photografted onto low density polyethylene substrates at temperatures above the melting point of MAH. The effects of some principal factors including irradiation temperature, photoinitiators, the intensity of UV radiation, and the far UV radiation on the grafting polymerization were investigated in detail. Percent conversion and grafting efficiency of the polymerizations were determined by the gravimetric method. The contact angles of the grafted film PE-g-PMAH against water and the FTIR spectrum of the grafted film were measured as characterization. The results show that the photografting polymerization of MAH can proceed smoothly at temperatures higher than the melting point of MAH; the far UV radiation and the intensity of the UV radiation affect the grafting polymerization greatly; the photoinitiators also have influence on the polymerization. According to the FTIR spectra, it is clearly confirmed that the grafted film samples contain anhydride groups. The contact angles demonstrate that the wettability of the grafted films is enhanced obviously, especially to those grafted film samples through hydrolysis. (C) 2002 Elsevier Science Ltd. All rights reserved.