期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 208, 期 16, 页码 1764-1772出版社
WILEY-BLACKWELL
DOI: 10.1002/macp.200700109
关键词
beta-cyclodextrin; hydrogels; poly(ethylene glycol); urethanes
New hydrophilic networks combining poly(ethylene glycol) (PEG) and beta-cyclodextrin (beta-CD) have been prepared. Both components are linked by reacting PEG chains previously endcapped with isocyanate groups and P-CD, forming urethane links. Networks of molar compositions ( beta-CD/REG) ranging from 1/4 to 1/14, and with four different molar masses (400, 600, 900, and 1350 g center dot mol(-1)) of the end-capped PEG precursor have been synthesized. The networks have good thermal stability and low glass transition temperatures. Crystallinity has only been detected for the two higher molar mass PEG precursors. The swelling properties of these hydrogels depend on the chain lengths of the PEG precursor and also on the temperatures.
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