| PREPARATION AND CHARACTERIZATION OF cis-,4-POLYBUTADIENE CONTAINING A FRACTION OF trans-1,4-POLYBUTADIENE |
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| 作者姓名： | 胡振亚 李树权 林云青 |
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| 作者单位： | Changchun Institute of Applied Chemistry，Academia Sinica，Changchun，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun |
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| 摘 要： | Polymerization of butadiene catalysed first with V(acac)_3-Al(i-Bu)_2Cl, then with Co(acac)_3-H_2O-Al(i-Bu)_2Cl has been studied. The polymer obtained was identified to be a new variety of cis-1,4-polybutadiene which contained a fraction of trans-1,4-polybutadiene chemically bonded to the cis-1,4-polybutadiene chains. Its molecular weight and trans-1,4 content can be regulated by varying the catalyst composition and concentration as well as other polymerization conditions. The trans-1,4 fraction, although it presents only in 9—16%, forms a crystalline phase in the matrix at room temperature and facilitates the crystallization of the polymer.
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| 收稿时间： | 1983-02-24 |
PREPARATION AND CHARACTERIZATION OF cis-,4-POLYBUTADIENE CONTAINING A FRACTION OF trans-1,4-POLYBUTADIENE* |
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| HU Zhenya,LI Shuquan,LIN Yunqing.PREPARATION AND CHARACTERIZATION OF cis-,4-POLYBUTADIENE CONTAINING A FRACTION OF trans-1,4-POLYBUTADIENE[J].Chinese Journal of Polymer Science,1984,0(1):12-18. |
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| Authors: | HU Zhenya LI Shuquan LIN Yunqing |
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| Institution: | Changchun Institute of Applied Chemistry; Academia Sinica; Changchun |
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| Abstract: | Polymerization of butadiene catalysed first with V(acac)3-Al(i-Bu)2Cl, then with Co(acac)3-H2O-Al(i-Bu)2Cl has been studied. The polymer obtained was identified to be a new variety of cis-1,4-polybutadiene which contained a fraction of trans-1,4-polybutadiene chemically bonded to the cis-1,4-polybutadiene chains. Its molecular weight and trans-1,4 content can be regulated by varying the catalyst composition and concentration as well as other polymerization conditions. The trans-1,4 fraction, although it presents only in 9—16% forms a crystalline phase in the matrix at room temperature and facilitates the crystallization of the polymer. |
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