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RAFT Ab Initio Emulsion Polymerization of Styrene Using Poly(acrylic acid)‐b‐polystyrene Trithiocarbonate of Various Structures as Mediator and Surfactant
Author(s) -
Huang Jie,
Zhao Shuai,
Gao Xiang,
Luo Yingwu,
Li Bogeng
Publication year - 2014
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.201400010
Subject(s) - chain transfer , emulsion polymerization , raft , polymer chemistry , dispersity , styrene , polystyrene , polymerization , acrylic acid , reversible addition−fragmentation chain transfer polymerization , pulmonary surfactant , emulsion , chemistry , materials science , chemical engineering , radical polymerization , copolymer , organic chemistry , polymer , biochemistry , engineering
Reversible addition fragmentation chain transfer (RAFT) ab initio emulsion polymerization of styrene using poly(acrylic acid)‐b‐polystyrene trithiocarbonate (AA x ‐b‐St y macroRAFT) as both mediator and surfactant was investigated with systematically changed y from 0 to 7 and x from 15 to 30. A well‐controlled polymerization in terms of little coagulum, well predicted molecular weight and low polydispersity (PDI) (≈1.2) could only be achieved by using the macroRAFTs of hydrophile‐lipophile balance (HLB) values between 13 and 20. The final latex particle size could be tuned from 80 to 172 nm in diameter simply by changing x and y values while the molecular weight was targeted the same (30 K).