A new class of self-healable hydrophobic materials based on ABA triblock copolymer via RAFT polymerization and Diels-Alder "click chemistry"

被引：34

作者：

Pramanik, Nabendu B. ^{[1
,2
]}

Mondal, Prantik ^{[1
]}

Mukherjee, Rabibrata ^{[3
]}

Singha, Nikhil K. ^{[1
]}

机构：

[1] Indian Inst Technol, Rubber Technol Ctr, Kharagpur 721302, W Bengal, India

[2] CUNY City Coll, Dept Chem, New York, NY 10031 USA

[3] Indian Inst Technol, Dept Chem Engn, Instabil & Soft Patterning Lab, Kharagpur 721302, W Bengal, India

来源：

POLYMER | 2017年 / 119卷

关键词：

ABA triblock copolymer; PDMS; RAFT polymerization; Click chemistry; Hydrophobic self-healing polymer; AMPHIPHILIC BLOCK-COPOLYMERS; DIBLOCK COPOLYMERS; HEALING MATERIALS; POLYMERS; METHACRYLATE); STYRENE; TEMPERATURE; HYDROGELS; NETWORKS; DELIVERY;

D O I：

10.1016/j.polymer.2017.05.003

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This investigation reports the preparation of a new self-healing ABA tri-block copolymer (BCP) poly(furfuryl methacrylate-b-poly(dimethyl siloxane)-b-poly(furfuryl methacrylate) (PFMA-b-PDMS-b-PFMA) (FDF) via RAFT polymerization using PDMS-CTA as macro-RAFT agent. The formation of FDF triblock copolymer was confirmed by H-1 NMR, GPC and DSC analyses. The phase segregated domain morphology of the synthesized BCP films as a function of PFMA fraction was studied via an AFM. In this BCP, Diels-Alder (DA) click reaction was carried out between the reactive furfuryl group in PFMA unit as diene with different maleimides as dienophile. While the presence of the PFMA unit makes the triblock copolymer thermally amendable and the PDMS present in the matrix makes the BCP ideally suited for hydrophobic self-healing applications. The hydrophobic nature of the triblock copolymer was studied by water contact angle (WCA) measurement and the self-healing property was studied by DSC and SEM analyses. (C) 2017 Published by Elsevier Ltd.

引用

页码：195 / 205

页数：11