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A Useful Method for Preparing Mixed Brush Polymer Grafted Nanoparticles by Polymerizing Block Copolymers from Surfaces with Reversed Monomer Addition Sequence
Author(s) -
Zheng Yang,
Huang Yucheng,
Benicewicz Brian C.
Publication year - 2017
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.201700300
Subject(s) - copolymer , monomer , chain transfer , polymer chemistry , polymerization , polymer , materials science , polystyrene , radical polymerization , nanoparticle , reversible addition−fragmentation chain transfer polymerization , chemical engineering , precipitation polymerization , gel permeation chromatography , amphiphile , polymer brush , nanotechnology , engineering , composite material
The preparation of well‐defined block copolymers using controlled radical polymerization depends on the proper order of monomer addition. The reversed order of monomer addition results in a mixture of block copolymer and homopolymer and thus has typically been avoided. In this paper, the low blocking efficiency of reversed monomer addition order is utilized in combination with surface initiated reversible addition−fragmentation chain‐transfer polymerization to establish a facile procedure toward mixed polymer brush grafted nanoparticles SiO 2 ‐ g ‐(PS (polystyrene), PS‐ b ‐PMAA (polymethacrylic acid)). The SiO 2 ‐ g ‐(PS, PS‐ b ‐PMAA) nanoparticles are analyzed by gel permeation chromatography deconvolution, and the fraction of each polymer component is calculated. Additionally, the SiO 2 ‐ g ‐(PS, PS‐ b ‐PMAA) are amphiphilic in nature and show unique self‐assembly behavior in water.