Issue 38, 2023

Ultrafast synthesis of core cross-linked star poly(p-methylstyrene) with high syndiotacticity through living coordination polymerization

Abstract

The ultrafast synthesis of core cross-linked star poly(p-methylstyrene) (s-PMS) with syndiotactic arms was reported for the first time through a coupling reaction between the active species of metal-poly(p-methylstyrene) and the cross-linker of divinylbenzene (DVB). The effects of the molecular weight of the polymeric active species, DVB loading and coupling time on the efficient synthesis of s-PMS were investigated. The kinetics of the coupling reaction showed that narrowly distributed s-PMS was provided within a short coupling time (10 min), but an s-PMS with multimodal distribution was formed upon prolonging the coupling time due to star–star coupling. When the molecular weight of the living poly(p-methylstyrene) was 3.2 × 104 g mol−1 and the molar ratio of the DVB-to-yttrium catalyst was 10 : 1, a narrowly distributed s-PMS (PDI ∼ 1.06) was prepared in high yield (93.5%) in a coupling time of 10 minutes. Compared to linear PMS, s-PMS with the same molecular weight has lower solution viscosity and smaller hydrodynamic radius.

Graphical abstract: Ultrafast synthesis of core cross-linked star poly(p-methylstyrene) with high syndiotacticity through living coordination polymerization

Supplementary files

Article information

Article type
Communication
Submitted
22 Jul 2023
Accepted
09 Sep 2023
First published
18 Sep 2023

Polym. Chem., 2023,14, 4407-4413

Ultrafast synthesis of core cross-linked star poly(p-methylstyrene) with high syndiotacticity through living coordination polymerization

Y. Wu, B. Liu and D. Cui, Polym. Chem., 2023, 14, 4407 DOI: 10.1039/D3PY00856H

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