PREPARATION AND CHARACTERIZATION OF cis-,4-POLYBUTADIENE CONTAINING A FRACTION OF trans-1,4-POLYBUTADIENE*

HU Zhenya; LI Shuquan; LIN Yunqing

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PREPARATION AND CHARACTERIZATION OF cis-,4-POLYBUTADIENE CONTAINING A FRACTION OF trans-1,4-POLYBUTADIENE*

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- PREPARATION AND CHARACTERIZATION OF cis-,4-POLYBUTADIENE CONTAINING A FRACTION OF trans-1,4-POLYBUTADIENE*
- Vol. 2, Issue 1, Pages: 12-18(1984)
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- Published：20 July 1984
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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]. 1984, 2(1): 12-18.
DOI：

HU Zhenya, LI Shuquan, LIN Yunqing. PREPARATION AND CHARACTERIZATION OF cis-,4-POLYBUTADIENE CONTAINING A FRACTION OF trans-1,4-POLYBUTADIENE*[J]. 1984, 2(1): 12-18. DOI：

摘要

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.

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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