Issue 71, 2017

Amphiphilic acrylamide block copolymer: RAFT block copolymerization and monolayer behaviour

Abstract

RAFT polymerization of acrylamide monomers with long alkyl sidechains was studied for application to block copolymer synthesis and nanoscale assembly using the Langmuir–Blodgett technique. Controlled radical polymerization was demonstrated by optimizing the chain transfer agent (CTA) concentration: amphiphilic acrylamide block copolymer, poly(N-dodecylacrylamide)-block-poly(N-tert-pentylacrylamide) (pDDA-b-ptPA) was obtained with high molecular weight (1.3 × 104) and narrow molecular distribution (Mw/Mn = 1.4). The diblock copolymer formed a stable monolayer at the air–water interface under a surface pressure of 30 mN m−1, but the presence of the junction between pDDA and ptPA affected the monolayer mechanical properties at higher surface pressures. Results provide insight into the two-dimensional self-assembly of amphiphilic block copolymers consisting of molecular-level amphiphilic block components.

Graphical abstract: Amphiphilic acrylamide block copolymer: RAFT block copolymerization and monolayer behaviour

Supplementary files

Article information

Article type
Paper
Submitted
18 jun 2017
Accepted
13 sep 2017
First published
20 sep 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 44954-44960

Amphiphilic acrylamide block copolymer: RAFT block copolymerization and monolayer behaviour

S. Yamamoto, T. Miyashita and M. Mitsuishi, RSC Adv., 2017, 7, 44954 DOI: 10.1039/C7RA06788G

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