Synthesis and Self-assembly of a Simple CO<sub>2</sub>-responsive Diblock Polymer-Reference-Cited by-同舟云学术

Synthesis and Self-assembly of a Simple CO₂-responsive Diblock Polymer

Published:2024-09-06 Issue: Volume: Page:
ISSN:1899-4741
Container-title:Polish Journal of Chemical Technology
language:en
Short-container-title:

Author:

Zhang Pengfei¹,Jing Xianwu¹²,Zhou Lang³,Liu Qiang³,Zhang Yadong¹

Affiliation:

1. Research Institute of Natural Gas Technology, PetroChina Southwest Oil and Gasfield Company , Chengdu, Sichuan, 610213 , People’s Republic of China

2. Shale Gas Evaluation and Exploitation Key Laboratory of Sichuan Province , Sichuan Provincial Department of Science and Technology , Chengdu, Sichuan, 610051 , People’s Republic of China

3. Engineering Technology Department , PetroChina Southwest Oil and Gasfield Company , Chengdu , Sichuan, 610081 , People’s Republic of China

Abstract

Abstract Methoxypolyethylene glycol 1900 and α-bromoisobutanoyl bromide were utilized for alcoholysis reaction to obtain a macromolecular initiator. Then, a simple amphiphilic diblockpolymer (mPEG-PDMAEMA) based on the initiator and dimethylaminoethyl methacrylate was synthesized through the atomic transfer radical polymerization (ATRP) method. The structures of the initiator and diblock polymer were accurately characterized using infrared spectrum and proton nuclear magnetic resonance spectroscopy (1H NMR). Cryo-transmission electron microscopy revealed the self-assembly of mPEG-PDMAEMA into vesicle-like structures in water. Upon injection of CO2 into the solution, the tertiary amine structure within PDMAEMA underwent protonation, resulting in the mPEG-PDMAEMA adopting a hydrophilic structure. Consequently, the vesicles dissociated and dispersed, forming a network-like structure in water. The protonation phenomenon was confirmed by 1H NMR, as evidenced by the shifting of alkyl hydrogen atoms near nitrogen atoms toward downfield positions.

Publisher

Walter de Gruyter GmbH

Link

https://www.sciendo.com/pdf/10.2478/pjct-2024-0025

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