Synthesis and characterization of a novel mid‐chain macrophotoinitiator of polyacrylonitrile by Ce(IV)/HNO3 redox system
Synthesis and characterization of a novel mid‐chain macrophotoinitiator of polyacrylonitrile by Ce(IV)/HNO3 redox system
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DOI：
10.1002/pola.22860
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发表时间：
2008-08
期刊：
影响因子：
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通讯作者：
M. Değirmenci;Edip Taşkesen;Sirin Hicri;H. Yilmaz
中科院分区：
文献类型：
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作者：
M. Değirmenci;Edip Taşkesen;Sirin Hicri;H. Yilmaz
研究了硝酸铈（IV）硝酸铵与2-羟基-1-（4-（2-羟基乙氧基）苯基）-2-甲基丙烷-1- 1 (HE-HMPP) （Irgacure 2959）在硝酸水溶液中的聚合反应。制备了一种新型聚丙烯腈（PAN）中链大光引发剂。考察了丙烯酰胺（AAm）、HE-HMPP、Ce（IV）、HNO3浓度和温度对聚合速率、单体转化率和特性粘度的影响。光降解及红外、核磁共振、紫外和荧光光谱研究表明，PAN在链的中间具有理想的光引发剂功能。将得到的聚丙烯腈作为预聚物，用于甲基丙烯酸甲酯（MMA）和AAm的光诱导自由基聚合制备嵌段共聚物。vc 2008 Wiley
The polymerization of acrylonitrile initiated by cerium(IV) ammonium nitrate in combination with dihydroxy functional photoinitiator namely, 2-hydroxy-1- (4-(2-hydroxyethoxy)phenyl)-2-methyl propan-1-one (HE-HMPP), Irgacure 2959, has been investigated in aqueous nitric acid. A novel mid-chain macrophotoinitiator of polyacrylonitrile (PAN) was obtained. The effects of acrylamide (AAm), HE-HMPP, Ce(IV), and HNO3 concentrations and temperature on the polymerization rate, mono- mer conversion, and intrinsic viscosities were investigated. The photodegradation and IR, H NMR, UV, and fluorescence spectroscopic studies revealed that PAN with desired photoinitiator functionality in the middle of the chain was obtained. The obtained PAN was used as prepolymer for photoinduced free radical polymerization of methyl methacrylate (MMA) and AAm to produce block copolymers. V C 2008 Wiley