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Ketone‐Functionalized Polymer Nano‐Objects Prepared via Photoinitiated Polymerization‐Induced Self‐Assembly (Photo‐PISA) Using a Poly(diacetone acrylamide)‐Based Macro‐RAFT Agent
Author(s) -
He Jun,
Xu Qin,
Tan Jianbo,
Zhang Li
Publication year - 2019
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800296
Subject(s) - copolymer , polymerization , polymer chemistry , chain transfer , materials science , reversible addition−fragmentation chain transfer polymerization , raft , monomer , acrylate , polymer , chemical engineering , radical polymerization , composite material , engineering
Herein, ketone‐functionalized diblock copolymer nano‐objects are prepared by photoinitiated reversible addition–fragmentation chain transfer (RAFT) dispersion polymerization of tert ‐butyl acrylate ( t BA) using a poly(diacetone acrylamide) (PDAAM)‐based macromolecular RAFT (macro‐RAFT) agent in ethanol/water (60/40, w/w) at room temperature. A high polymerization rate is observed via the exposure of visible light (λ max = 405 nm, 0.45 mW cm −2 ) with near quantitative monomer conversion being achieved within 60 min. A morphological phase diagram is constructed by changing the degree of polymerization (DP) of P t BA and the monomer concentration. The morphologies of polymer nano‐objects are further tuned by incorporating isobornyl acrylate (IBOA) into the core‐forming block. The ketone‐functionalized diblock copolymer nano‐objects can be shell‐cross‐linked by reacting with a diamine. Finally, the shell‐cross‐linked polymer nano‐objects are further hydrolyzed and employed as a template for the synthesis of silver composites.