Polymerization of Acrylonitrile with(Diisopropylamido)Bis(indenyl) Lanthanides

稀土学报(英文版), 2002, 20(5): 538-540.

李刚 ^1, , 张学全 ^2, , 应来强 ^3, , 巴小微 ^4, , 崔冬梅 ^5, , 唐涛 ^6, , 金鹰泰 ^7,

1.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

2.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

3.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

4.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

5.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

6.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

7.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

基金项目: the Key Laboratory of Polymer Physics and Chemistry in Chinese Academy of Sciences and the Joint Foundation of Polymer Chemistry Laboratory of Chinese Academy of Sciences and China Petro-Chemical Corporation

Polymerization of Acrylonitrile with(Diisopropylamido)Bis(indenyl) Lanthanides

Keywords： rare earths

The polymerization of acrylonitrile was studied using (diisopropylamido)bis(indenyl) lanthanides, Ind2LnN(i-Pr)2(Ln=Y, Yb) as a single-component catalyst. The effects of the amount of catalyst, monomer concentration and polymerization temperature on catalytic activity and molecular weight of polyacrylonitrile(PAN) were studied. The results show that the catalytic activity is raised obviously with rising polymerization temperature. The monomer conversion reaches 64% under polymerization temperature, monomer concentration and catalyst concentration are 50 ℃, 5.1 mol*L-1 and 0.3%(molar ratio) sequentially. The conversion and molecular weight of the polymer increase appreciably with adding additive, PhONa. When the molar ratio of PhONa to the catalyst is three, the conversion and the molecular weight is 76% and 1.32×104, respectively. The initiation mechanism for the polymerization of acrylonitrile was proposed.

参考文献

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Polymerization of Acrylonitrile with(Diisopropylamido)Bis(indenyl) Lanthanides

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