Premium
Atom Transfer Radical Polymerization of Solketal Acrylate Using Cyclohexanone as the Solvent
Author(s) -
Zhen Yuee,
Wan Shourong,
Liu Yuanqin,
Yan Husheng,
Shi Rongfu,
Wang Chunhong
Publication year - 2005
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200400414
Subject(s) - chemistry , polymer chemistry , atom transfer radical polymerization , polymerization , copolymer , acrylate , cyclohexanone , acrylic acid , organic chemistry , catalysis , polymer
Summary: Solketal acrylate (SA) was homopolymerized by atom transfer radical polymerization (ATRP) using CuBr/ N , N , N ′, N ″, N ″‐pentamethyldiethylenetriamine as the catalyst and cyclohexanone as the solvent with controlled molecular weights and low polydispersities. The prepared bromine‐terminated homopolymers, PSA, were used as macroinitiators to initiate polymerization of tert ‐butyl acrylate ( t BA) under similar ATRP conditions to produce diblock copolymers, PSA‐ b ‐P t BA, with controlled molecular weights and low polydispersities. ATRP of SA using bromine‐terminated P t BA as the macroinitiator was also carried out and diblock copolymers, P t BA‐ b ‐PSA, were obtained. The PSA block was selectively hydrolyzed by stirring for 3 h in 6 N HCl/THF (1/9, v/v) at room temperature to form a poly(glycerol monoacrylate) block. Both blocks of PSA and P t BA were hydrolyzed by stirring in anhydrous trifluoroacetic acid (TFA)/dichloromethane for 4 h, then adding water to the system and stirring for another 3 h to form corresponding diblock copolymers of glycerol monoacrylate and acrylic acid.Kinetic plot for the atom transfer radical polymerization of solketal acrylate at 90 °C.