Block copolymers by combination of cationic and radical routes: 5. Polymerization of styrene initiated by 4,4′-azobis(4-cyanopentanoyl chloride)

Gurkan Hizal, Huseyin Tasdemir, Yusuf Yagci*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The kinetics of the polymerization of styrene initiated by 4,4′-azobis(4-cyanopentanoyl chloride) (ACPC) was investigated in bulk and in benzene solution at 60°C. It was found that the overall rate of polymerization is proportional to the 0.48 power of the initiator concentration. The chain transfer-to-initiator and chain transfer-to-solvent constants were estimated to be CI = 0.41 and CS = 1.9 × 10-4, respectively. Polymerization of styrene initiated by ACPC yields polystyrene with an acyl chloride terminal group at each end. Polymerization of tetrahydrofuran initiated by acyl chloride-terminated polystyrene in conjunction with AgSbF6 provided the formation of a block copolymer.

Original languageEnglish
Pages (from-to)1803-1806
Number of pages4
JournalPolymer
Volume31
Issue number9
DOIs
Publication statusPublished - Sept 1990

Funding

The financial support of ITU Malzeme Bilimleri ve Uretim Teknoloji Uygar Merkezi is gratefully acknowledged. We also thank the Alexander von Humboldt Foundation for donating the gel permeation chromatography instrument.

FundersFunder number
ITU Malzeme Bilimleri ve Uretim Teknoloji Uygar Merkezi

    Keywords

    • block copolymer
    • cationic polymerization
    • chain transfer reaction
    • free-radical polymerization

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