Issue 9, 2023

Thermoresponsive star-shaped polymer with heteroarm type with methacrylates: preparation by living radical polymerization method and its topological effect

Abstract

We first designed the thermoresponsive star-shaped polymer with heteroarm structure based on methacrylates by living radical polymerization with Ru catalyst. The lowest critical solution temperature (LCST) of the heteroarm polymer was controlled within the range 26–52 °C by changing the initial ratio of diethylene glycol methyl ether methacrylate (DEGMA) and triethylene glycol methyl ether methacrylate (TEGMA) in the copolymerization. The synthesized heteroarm star-shaped polymer consisted of P(DEGMA-stat-TEGMA), with a unit composition of DEGMA : TEGMA = 83 : 17 and LCST of 35 °C, and poly(methyl methacrylate) (PMMA), and possessed approximately six arms of P(DEGMA-stat-TEGMA) and approximately two arms of PMMA. This heteroarm star-shaped polymer was insoluble in water. However, the star-shaped polymer-coated surface showed thermoresponsivity, in which the contact angle of the captive bubble changed from 131 ± 0.6° at 20 °C to 126 ± 1.9° at 40 °C. This result indicates that such heteroarm star-shaped polymers can be promising materials for constructing thermoresponsive surfaces using simple coating methods.

Graphical abstract: Thermoresponsive star-shaped polymer with heteroarm type with methacrylates: preparation by living radical polymerization method and its topological effect

Supplementary files

Article information

Article type
Paper
Submitted
01 N’w 2022
Accepted
17 Sun 2023
First published
18 Sun 2023

Polym. Chem., 2023,14, 1027-1035

Author version available

Thermoresponsive star-shaped polymer with heteroarm type with methacrylates: preparation by living radical polymerization method and its topological effect

T. Ando, K. Yamaguchi and H. Ajiro, Polym. Chem., 2023, 14, 1027 DOI: 10.1039/D2PY01518H

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