1. Tuning Polymer Molecular Weight Distribution in Cationic RAFT Polymerization by Mixing Chain Transfer Agents†.
- Author
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Chen, Miao, Li, Jiajia, Xing, Dong, Pan, Xiangqiang, and Zhu, Jian
- Subjects
ADDITION polymerization ,POLYMERS ,MOLECULAR weights ,CATIONIC polymers ,VISIBLE spectra ,VINYL ethers ,RADICALS (Chemistry) - Abstract
Comprehensive Summary: Polymer dispersity (Đ) or molecular weight distribution (MWD) is a basic but vital parameter for the properties of polymeric materials. Developing new methodologies for controlling polymer MWD is emerging as a research hotspot. However, the methods to tune polymer MWD in cationic polymerization are still not well explored. Herein, we present a simple method to control the dispersity of poly(isobutyl vinyl ether) (PIBVE) by mixing two different chain transfer agents in batch visible light induced cationic RAFT polymerization. A broad dispersity range (Đ ≈ 1.16—1.80) was successfully achieved while maintaining monomodal MWD. Moreover, chain extension of PIBVE through both cationic polymerization and radical polymerization has been studied, which also provides a method to tune polymer MWD in mechanism transformation polymerization. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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