Study on preparation process of high molecular weight PAN initiated by water-soluble azo salt
Zhao Yaqi1, Cai Tiantian1, Guo Wenjing2, Ma Haolong1, Wu Yiman1, Lei Shuntian1
1.School of Materials and Chemical Engineering,Henan University of Urban Construction, Pingdingshan 467036; 2.School of of Chemical Engineering and Energy,Zhengzhou University, Zhengzhou 450001
Abstract: With acrylonitrile/acrylamide/itaconic acid (AN/AM/IA) as reaction monomers,according to the orthogonal design experiments,polyacrylonitrile (PAN) terpolymers with different polymerization conversions and average molecular weights were successfully synthesized using the water-soluble azo-salt (R,R′-azo diisobutyramidine dihydrochloride:V50) as initiator through mixed-solvent precipitation method.The experiment results showed that reaction time and reaction temperature were the most significant factors influencing the polymerization conversion and the average molecular weight,respectively.Combined with the influence significance of different reaction factors,it was shown from confirmatory experiments that the PAN terpolymers with high conversion and high molecular weight could be prepared by improving the polymerization process conditions obtained from the orthogonal experiments.In the fourier transform infrared spectrum of PAN products,stronger absorption peaks of nitrile group (C≡N) and carbonyl group (CO) with different wave numbers can testify that AN/AM/IA monomers was copolymerized during the reaction process.
赵亚奇, 蔡甜甜, 郭雯静, 马浩龙, 吴颐曼, 雷顺天. 水溶性偶氮盐引发制备高分子量聚丙烯腈工艺研究[J]. 化工新型材料, 2019, 47(7): 115-119.
Zhao Yaqi, Cai Tiantian, Guo Wenjing, Ma Haolong, Wu Yiman, Lei Shuntian. Study on preparation process of high molecular weight PAN initiated by water-soluble azo salt. New Chemical Materials, 2019, 47(7): 115-119.
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