Size exclusion chromatography (XIII): Identification and quantitation of silicon hydride containing oligomeric components of Sylgard prepolymers. [Polydimethylsiloxane]
Methods for the identification and quantitation of oligomeric, silicon hydride (SiH), containing components of Sylgard prepolymers (polydimethylsiloxane: PDMS) have been developed. They employ a combination of size exclusion chromatography (SEC), with infrared (ir) and differential refractometer (DR) detection and gas chromatography/mass spectrometry (GC/MS) verification. The identified oligomers were present at about 20% of total prepolymer and contained from one to six SiH linkages per molecule. Such lower molecular weight oligomers may contribute to the vapor pressure of resins prepared from the prepolymers since they may contain a significant number of molecules which have only one or two SiH groups and are not capable of forming large polymeric structures. 5 refs., 8 figs., 2 tabs.
- Research Organization:
- Mason and Hanger-Silas Mason Co., Inc., Amarillo, TX (USA)
- DOE Contract Number:
- AC04-76DP00487
- OSTI ID:
- 5555062
- Report Number(s):
- MHSMP-87-54; ON: DE88004234
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
CHEMICAL BONDS
CHROMATOGRAPHY
CURING
GAS CHROMATOGRAPHY
HYDRIDES
HYDROGEN COMPOUNDS
MASS SPECTROSCOPY
MOLECULAR STRUCTURE
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
POLYMERS
QUANTITY RATIO
SEPARATION PROCESSES
SILANES
SILICON COMPOUNDS
SILOXANES
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
VOLATILITY