# CRYSTALLIZABLE POLYISOPRENE UNDER STRAIN OBTAINED BY ND-BASED CATALYST

> Title: CRYSTALLIZABLE POLYISOPRENE UNDER STRAIN OBTAINED BY ND-BASED CATALYST Page Range: p.69-72 Author(s): Guilian Li; Weidong Yin File size: 265K Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites Issue Year: ppc Volume: 20 Issue No: No.1-2...

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Published: 2012-01-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: CRYSTALLIZABLE POLYISOPRENE UNDER STRAIN OBTAINED BY ND-BASED CATALYST**
 Page Range: p.69-72
 Author(s): Guilian Li; Weidong Yin
 File size: 265K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc20-1-2&JournalID=101542&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 20
 Issue No: No.1-2

**Abstract**
 The conventional Ziegler-Natta catalyst composed of neodymium versatate (Nd(vers)3), alkylaluminium (Al(iBu)2H or Al(i-Bu)3) and diisobutylaluminium chloride (Al(i-Bu)2Cl) was examined in isoprene polymerisation. The polymer with narrow molecular weight distribution (Mw/Mn < 3) can be obtained by controlling Al(i-Bu)2H amounts and component addition order. While, polyisoprene with high cis-1,4 content (> 96%), high molecular weight (> 100x104) and narrow molecular weight distribution (Mw/Mn < 2.2) is synthesised by using Al(i-Bu)3 as cocatalyst. In the meantime, the obtained polymer has crystallisation behaviour under strain. 12 Refs.

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