Shao Huafeng

Zhao Yongxian; Shao Huafeng; Wang Bo; Yao Wei; Huang Bao-chen

With TiCl4/MgCl2 (Ti) and Al(i-Bu)3 (Al) as catalysts, the thermoplastic copolymer of 1-butene(Bt) and 1-hexene(He) was synthesized successfully. The effects of Bt/He, Ti/(He+Bt), Al/Ti, temperature and reaction time on conversion, catalyst efficiency(CE), intrinsic viscosity([η]) and insoluble content were studied. The copolymer was analyzed with Fourier transform-infrared (FTIR) and nuclear magnetic resonance (1H-NMR). Results showed that the optimal polymerization conditions were: He/Bt = 0.25, temperature 40°C−50°C, Al/Ti = 400−500, Ti/(Bt+He) = 3 × 10−5 − 4 × 10−5, time 4 h. Intrinsic viscosity was found to increase with increasing Ti/(Bt+He) and decreasing Al/Ti and polymerization temperature. When the molar content of He, Al/Ti and polymerization temperature increased, the insoluble content in CH2Cl2 of copolymers decreased. When Ti/(Bt+He) and reaction time increased, the insoluble content in CH2Cl2 of copolymers also increased. The crystallization and stereoregularity of poly(1-butene) decreased with the addition of He.

He Aihua; Huang Bao-chen; Yao Wei; Shao Huafeng; Liu Chenguang

He Aihua; Wang Fengzhong; Shao Huafeng; Gao Fengbao; Liu Chenguang; Bi Xinping; Jiang Xiubo; Yang Haiyang; Yao Wei

Huang Bao-chen; Yao Wei; Shao Huafeng

He Aihua; Shao Huafeng

He Aihua; Wang Riguo; Shao Huafeng; Liu Chenguang

He Aihua; Ma Yunsheng; Shao Huafeng; Yao Gang; Liu Chenguang; Wang Riguo

He Aihua; Shao Huafeng; Liu Zhenxue; Liu Chenguang; Liu Jinzhang; Yao Gang

Yao Wei; Shao Huafeng; Liu Chenguang; Jiang Xiubo

He Aihua; Jiang Xiubo; Sun Wenhua; Liu Chenguang; Shao Huafeng; Wang Riguo