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Quantitative Analysis of Microstructure in Polysiloxanes Using High Resolution 29Si NMR Spectroscopy: Investigation of Lot Variability in the LVM97 and HVM97 PDMS/PDPS Copolymers.


DE2003805875

Publication Date 2002
Personal Author Alam, T. M.
Page Count 27
Abstract The quantitative analysis of microstructure and sequence distribution in polysiloxane copolymers using high-resolution solution 29Si NMR is reported. Copolymers containing dimethylsiloxane (DMS) and diphenysiloxane (DPS) monomer units prepared with either high vinyl content (HVM) or low vinyl content (LVM) were analyzed. The average run length (Rexp), the number average sequence length (lA, lB), along with the various linkage probabilities (pAA, pAB, pBA, and pBB) were determined for different production lots of the LVM97 and HVM97 samples to address the lot variability of microstructure in these materials.
Keywords
  • Spectroscopy
  • Polysiloxane copolymers
  • NMR analysis
  • Microstructural analysis
  • Nomenclature
  • Quantitative analysis
  • Microstructures
  • Sequence distributions
Source Agency
  • Technical Information Center Oak Ridge Tennessee
Corporate Authors Sandia National Labs., Albuquerque, NM.; Department of Energy, Washington, DC.
Supplemental Notes Sponsored by Department of Energy, Washington, DC.
Document Type Technical Report
NTIS Issue Number 200318
Quantitative Analysis of Microstructure in Polysiloxanes Using High Resolution 29Si NMR Spectroscopy: Investigation of Lot Variability in the LVM97 and HVM97 PDMS/PDPS Copolymers.
Quantitative Analysis of Microstructure in Polysiloxanes Using High Resolution 29Si NMR Spectroscopy: Investigation of Lot Variability in the LVM97 and HVM97 PDMS/PDPS Copolymers.
DE2003805875

  • Spectroscopy
  • Polysiloxane copolymers
  • NMR analysis
  • Microstructural analysis
  • Nomenclature
  • Quantitative analysis
  • Microstructures
  • Sequence distributions
  • Technical Information Center Oak Ridge Tennessee
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