Issue 46, 2021

Tuning the molecular weight distributions of vinylketone-based polymers using RAFT photopolymerization and UV photodegradation

Abstract

The choice of chain transfer agent in reversible addition/fragmentation chain transfer polymerization has proven to be instrumental in modulating the dispersity of a certain polyphenyl vinyl ketone (PVK). The monomer, PVK, which can self-initiate when exposed to blue light, was used to synthesize homopolymers, block copolymers by extending with a different monomer and gradient polymers. Regardless of the polymer architecture or degree of polymerization, a consistent trend in polymer dispersity was quantified, with higher loadings of the less active chain transfer agent xanthate leading to higher dispersities. The dispersity could be further modulated by photodegradation of vinyl ketone polymers under UV irradiation.

Graphical abstract: Tuning the molecular weight distributions of vinylketone-based polymers using RAFT photopolymerization and UV photodegradation

Supplementary files

Article information

Article type
Paper
Submitted
19 Aug 2021
Accepted
04 Nov 2021
First published
05 Nov 2021

Polym. Chem., 2021,12, 6761-6770

Tuning the molecular weight distributions of vinylketone-based polymers using RAFT photopolymerization and UV photodegradation

T. Nwoko, N. De Alwis Watuthanthrige, B. Parnitzke, K. Yehl and D. Konkolewicz, Polym. Chem., 2021, 12, 6761 DOI: 10.1039/D1PY01129D

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