Citation:
MA Jingjing, HOU Yafen, HUANG Baotong. SYNTHESIS AND CHARACTERIZATION OF COMB-SHAPED POLYBUTADIENES*[J]. Chinese Journal of Polymer Science,
1985, 3(1): 68-75.
SYNTHESIS AND CHARACTERIZATION OF COMB-SHAPED POLYBUTADIENES*
摘要:
Polybutadiene (PB) was chlorinated with t-BuOCl without chain crosslinking and degradation togive chlorinated polybutadiene (Cl--PB) with active allylic chlorine atoms on the backbone. Comb-shaped PB was prepared by coupling of Cl--PB with "living" PB anions in a mixed solvent of cyc-lohexane and tetrahydrofuran. Characterization by GPC and osmometry showed that purifiedproducts were welldefined comb-shaped PB composed of low polydispersity backbone chain andrandomly distributed grafts of uniform length. Thaverage number of branches could be varied in a wide range to meet the needs of structure-properties relationship studies.
English
SYNTHESIS AND CHARACTERIZATION OF COMB-SHAPED POLYBUTADIENES*
Abstract:
Polybutadiene (PB) was chlorinated with t-BuOCl without chain crosslinking and degradation togive chlorinated polybutadiene (Cl--PB) with active allylic chlorine atoms on the backbone. Comb-shaped PB was prepared by coupling of Cl--PB with "living" PB anions in a mixed solvent of cyc-lohexane and tetrahydrofuran. Characterization by GPC and osmometry showed that purifiedproducts were welldefined comb-shaped PB composed of low polydispersity backbone chain andrandomly distributed grafts of uniform length. Thaverage number of branches could be varied in a wide range to meet the needs of structure-properties relationship studies.
扫一扫看文章
计量
- PDF下载量: 0
- 文章访问数: 1566
- HTML全文浏览量: 22
下载:
