Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 47, Issue 21, Pages 5882-5890Publisher
WILEY
DOI: 10.1002/pola.23633
Keywords
copolymerization; crosslinking; macrocycles; macromonomers; polysiloxanes
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Funding
- Ministry of Education, Culture, Sports, Science and Technology [18550109]
- Grants-in-Aid for Scientific Research [18550109] Funding Source: KAKEN
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A pentamethylcyclotrisiloxane moiety was introduced into cyclic polystyrene (cPSt) and cyclic PDMS (cPDMS) to obtain noncovalent cross-linking agents, D-3-cPSt and D-3-cPDMS, respectively. Anionic ring-opening polymerization of octamethylcyclotetrasiloxane (D-4) in nitrobenzene was carried out in the presence of D-3-cPSt to obtain a cloudy white PDMS gel as a precipitation. On the other hand, bulk copolymerization of D-3-cPDMS with D-4 proceeded in a homogeneous state to give a colorless transparent PDMS gel in high yield. The formation of mechanically linked PDMS with movable cross-linking was indicated by control experiment. (c) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 5882-5890, 2009
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