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Syntheses and Specific Interactions of Poly( ε ‐caprolactone)‐ block ‐poly(vinyl phenol) Copolymers Obtained via a Combination of Ring‐Opening and Atom‐Transfer Radical Polymerizations
Author(s) -
Kuo ShiaoWei,
Huang ChihFeng,
Lu ChuHua,
Lin HoMay,
Jeong KwangUn,
Chang FengChih
Publication year - 2006
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.200600250
Subject(s) - copolymer , polymer chemistry , atom transfer radical polymerization , hydrogen bond , intermolecular force , glass transition , materials science , hydrogen atom , ring opening polymerization , chemistry , polymer , molecule , group (periodic table) , organic chemistry
Summary: A series of PCL‐ b ‐PVPh diblock copolymers were prepared through combinations of ring‐opening and atom‐transfer radical polymerizations of ε ‐caprolactone and 4‐acetoxystyrene, and subsequent selective hydrolysis of the acetyl protective group. This PCL‐ b ‐PVPh diblock copolymer shows a single glass transition temperature over the entire composition range, indicating that this copolymer is able to form a miscible amorphous phase due to the formation of intermolecular hydrogen bonding between the hydroxyl of PVPh and the carbonyl of PCL. In addition, DSC analyses also indicated that the PCL‐ b ‐PVPh diblock copolymers have higher glass transition temperatures than their corresponding PCL/PVPh blends. FT‐IR was used to study the hydrogen‐bonding interaction between the PVPh hydroxyl group and the PCL carbonyl group at various compositions.FT‐IR spectra in the 1 680–1 780 cm −1 for PCL‐ b ‐PVPh copolymers with various PVPh contents.