Cationically photopolymerizable epoxy-functionalized thermoplastic polysilsesquioxanes: synthesis and properties

Title
Cationically photopolymerizable epoxy-functionalized thermoplastic polysilsesquioxanes: synthesis and properties
Authors
알버트 이성수최승석송선자백경열황승상
Issue Date
2014-10
Publisher
RSC advances
Citation
VOL 4, NO 99, 56532-56538
Abstract
A series of epoxy-functionalized inorganic&#8211;organic hybrid ladder-like structured polysilsesquioxanes were synthesized in one-batch via a base-catalyzed co-solvent system. Two types of epoxy functionalities were examined: aliphatic and cycloaliphatic. Obtained polymeric epoxy-functionalized ladder-like polysilsesquioxanes were cationically photopolymerized under UV irradiation over glass and plastic substrates. Obtained cross-linked films were examined as hardcoating materials as their thermal, optical, mechanical, and barrier properties were studied. These materials showed superior thermal properties (Td > 400 °C), high optical transparency (>95%), high pencil hardness (4H&#8211;9H), low dielectric constant (3.0&#8211;3.6), and good barrier properties (WVTR < 101 g m&#8722;2 day&#8722;1, OTR < 102 g m&#8722;2 day&#8722;1).
URI
http://pubs.kist.re.kr/handle/201004/48949
ISSN
20462069
Appears in Collections:
KIST Publication > Article
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