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Methacryloyl and/or Hydroxyl End‐Functional Star Polymers Synthesized by ATRP Using the Arm‐First Method
Author(s) -
Ohno Shigeki,
Gao Haifeng,
Cusick Brian,
Kowalewski Tomasz,
Matyjaszewski Krzysztof
Publication year - 2009
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.200800560
Subject(s) - polymer chemistry , polymer , chemistry , end group , star (game theory) , functional polymers , copolymer , organic chemistry , mathematical analysis , mathematics
Star polymers with methacryloyl groups at the chain ends were synthesized by esterification of hydroxyl end‐functional star polymers. First, the linear hetero‐telechelic macroinitiator (MI) was prepared by ATRP using a functional initiator. The obtained MI was chain‐extended and cross‐linked with DVB and then esterified into methacryloyl chain‐end functionality. The degree of esterification was controlled by changing the initial molar ratios of methacryloyl chloride to hydroxyl groups. The methacryloyl‐containing star polymers were cross‐linked either intermolecularly or intramolecularly under heating or UV irradiations, depending on the concentrations of star polymers during the cross‐linking reactions.