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.
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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.
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