Premium
Rendering Hyperbranched Polyglycerol Adjustably Thermoresponsive by Adamantyl Modification and Host/Guest Interaction
Author(s) -
Sun Xiaoyi,
Zhou Yongfeng,
Yan Deyue
Publication year - 2010
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.201000250
Subject(s) - lower critical solution temperature , polymer chemistry , cyclodextrin , aqueous solution , thermoresponsive polymers in chromatography , polymer , dynamic light scattering , chemistry , phase transition , chemical engineering , materials science , phase (matter) , organic chemistry , nanotechnology , copolymer , reversed phase chromatography , nanoparticle , physics , quantum mechanics , engineering
Abstract A novel thermoresponsive polymer based on adamantyl‐terminated hyperbranched polyglycerol (HPG‐AD) is reported. The hydroxy‐terminated hyperbranched polyglycerol (HPG) is functionalized by esterification of HPG with 1‐adamantanecarbonyl chloride. The resulting HPG‐AD shows interesting lower critical solution temperature (LCST) phase transitions in aqueous solution, depending on polymer concentration and AD graft ratio. In addition, the LCST transition can be controlled by adding various amounts of β ‐cyclodextrin ( β ‐CD) by a host/guest interaction. The adjustable thermoresponsive behaviors are studied by UV‐vis spectroscopy and dynamic light scattering.