Synthesis and self-assembly of a simple CO2-responsive diblock polymer

• Autorzy: Zhang Pengfei , Jing Xianwu , Zhou Lang , Liu Qiang , Zhang Yadong

Identyfikatory

DOI

10.2478/pjct-2024-0025

• Języki publikacji: EN

Abstrakty

EN

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 confi rmed by ¹H NMR, as evidenced by the shifting of alkyl hydrogen atoms near nitrogen atoms toward downfi eld positions.

Słowa kluczowe

EN

ATRP method; atomic transfer radical polymerization method; diblock polymer; vesicles; protonation

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2024
• Tom: Vol. 26, nr 3
• Strony: 16--20
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wz.

Twórcy

autor

Zhang Pengfei

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

autor

Jing Xianwu

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

autor

Zhou Lang

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

autor

Liu Qiang

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

autor

Zhang Yadong

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

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