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首页> 外文期刊>Journal of Applied Polymer Science >SURFACE MODIFICATION OF ACRYLONITRILE COPOLYMER MEMBRANES BY GRAFTING ACRYLAMIDE .1. INITIATION BY CERIC IONS
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SURFACE MODIFICATION OF ACRYLONITRILE COPOLYMER MEMBRANES BY GRAFTING ACRYLAMIDE .1. INITIATION BY CERIC IONS

机译：接枝丙烯酰胺对丙烯腈共聚物膜的表面改性.1。陶瓷离子的初始化

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摘要

Surface modification of membranes of an acrylonitrile copolymer (PAN) containing 5.5% methyl methacrylate (MMA) and 4.0% sodium methylpropylenesulfonate by grafting acrylamide (AAm) with cetric ammonium nitrate as initiator in the aqueous medium has been studied. Results showed that the extent of grafting was varied with some parameters, such as dimethyl formamide and Tween-20 amount in the reaction solution, concentration of AAm, and reaction time. The grafted copolymer was verified by infrared spectra and X-ray photoelectron spectroscopy. Both of these methods also showed that the ester group of MMA unit on the surface of PAN membranes may be partially hydrolyzed into carboxyl group in the copolymerization condition. Surface and pore structures of PAN membranes after grafting were viewed under a scanning electron microscope (SEM). From SEM photos we know that AAm homopolymer branches were grafted onto the surface of the membrane and the morphology of membrane did not change. Results of contact angle of isooctane on the membrane under water showed that the wettability of the modified membrane was improved. (C) 1997 John Wiley & Sons, Inc. [References: 20]
机译：研究了通过将丙烯酰胺（AAm）与硝酸铈铵作为引发剂接枝在水性介质中，对包含5.5％甲基丙烯酸甲酯（MMA）和4.0％甲基丙烯磺酸钠的丙烯腈共聚物（PAN）膜的表面改性。结果表明，接枝程度随反应溶液中二甲基甲酰胺和吐温20的量，AAm的浓度和反应时间等参数的变化而变化。通过红外光谱和X射线光电子能谱验证了接枝共聚物。这两种方法还表明，在共聚条件下，PAN膜表面上的MMA单元的酯基可能会部分水解为羧基。接枝后PAN膜的表面和孔结构在扫描电子显微镜（SEM）下观察。从SEM照片我们知道AAm均聚物分支被接枝到膜的表面，膜的形态没有改变。异辛烷在水中的膜接触角的结果表明，改性膜的润湿性得到了改善。 （C）1997 John Wiley＆Sons，Inc. [参考：20]

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