Size exclusion chromatography (XIII): Identification and quantitation of silicon hydride containing oligomeric components of Sylgard prepolymers. [Polydimethylsiloxane]

Technical Report · Tue Dec 01 00:00:00 EST 1987

OSTI ID:5555062

Kohn, E; Chisum, M E; Moore, K L

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
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
SILANES
SEPARATION PROCESSES
STRUCTURAL CHEMICAL ANALYSIS
SILOXANES
CHEMICAL BONDS
CHROMATOGRAPHY
CURING
GAS CHROMATOGRAPHY
MASS SPECTROSCOPY
MOLECULAR STRUCTURE
MOLECULAR WEIGHT
POLYMERS
QUANTITY RATIO
VOLATILITY
HYDRIDES
HYDROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
SILICON COMPOUNDS
SPECTROSCOPY
360602* - Other Materials- Structure & Phase Studies
400105 - Separation Procedures