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Temperature Sensitive Hydrogels Based on Hydroxypropylcellulose by High Energy Irradiation
Author(s) -
Gottlieb Ronny,
Kaiser Claudia,
Gohs Uwe,
Arndt KarlFriedrich
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750852
Subject(s) - self healing hydrogels , materials science , irradiation , polymer , silicone , electron beam processing , chemical engineering , high energy , layer (electronics) , swelling , volume (thermodynamics) , phase (matter) , phase transition , polymer chemistry , composite material , organic chemistry , chemistry , engineering physics , physics , quantum mechanics , nuclear physics , engineering
Summary: Stimuli sensitive hydrogels change their properties in dependence on a liquid environment. The temperature sensitive hydroxypropylcellulose (HPC) gel shows a volume phase transition in water at about 48 °C. For different applications a crosslinking of a preformed layer of the dry polymer on a support is necessary. It is known, that HPC dissolved in water is crosslinkable by high energy irradiation (electron beam). Now, we could show, that HPC can be crosslinked in the dry state by high energy irradiation. This allows the preparation of thin crosslinked layers of HPC on silicone substrates.