Synthesis of block copolymers of methyl siloxane, phenyl siloxane, vinyl siloxane, etc
Synthesis of homo poly(dimethylsiloxane) PDMS, homo poly(diphenylsiloxane PDPS, and di- and tri- block copolymers of PDMS and PDPS have been carried out by anionic living polymerization, using the following reagents: hexamethylcyclotrisiloxane, HMTS and hexaphenylcyclotrisiloxane, HPTS (monomers), n-BuLi and dilithium diphenyldisilanolate, DLS (initiators), DMSO and THF (promoters) and Toluene (solvent). Lithium based catalysts are used in order to minimize siloxane rearrangement (equilibration) reactions.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5296016
- Report Number(s):
- UCRL-15159; TRN: 80-010590
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
SILOXANES
SYNTHESIS
CATALYSTS
COPOLYMERS
DMSO
POLYMERIZATION
RESEARCH PROGRAMS
TETRAHYDROFURAN
TOLUENE
AROMATICS
CHEMICAL REACTIONS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
POLYMERS
SULFOXIDES
400201* - Chemical & Physicochemical Properties
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
SILOXANES
SYNTHESIS
CATALYSTS
COPOLYMERS
DMSO
POLYMERIZATION
RESEARCH PROGRAMS
TETRAHYDROFURAN
TOLUENE
AROMATICS
CHEMICAL REACTIONS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
POLYMERS
SULFOXIDES
400201* - Chemical & Physicochemical Properties