NMR Spin Relaxation, Self-Diffusion and Viscosity Studies of Poly(dimethylsiloxane)s Blended with Silicate Nanoparticles

CH Roberts, T Cosgrove, RG Schmidt, GV Gordon, AJ Goodwin, A Kretschmer

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

Abstract

Nuclear magnetic resonance spin-spin relaxation and self-diffusion measurements were used to investigate the mobility of poly(dimethylsiloxane) (PDMS) polymers when mixed with trimethylsilyl-treated silicate nanoparticles. The silicate can either solvate or reinforce the composite depending on the size of the particle. The smaller nanoparticle solvated all the polymer samples studied. The larger nanoparticle reinforced the two lowest molecular weight polymers at any concentration. When mixed with the higher molecular weight PDMS, the larger polysilicate caused a dramatic reduction in the mobility of the polymer chains above a critical concentration; however, an increase in mobility was observed below this critical concentration. This apparent increase in the mobility of the polymer chains was also manifested by a decrease in the zero-shear-rate viscosity of the mixture.
Translated title of the contributionNMR spin relaxation, self-diffusion and viscosity studies of poly(dimethylsiloxane)s blended with silicate nanoparticles
Original languageEnglish
Title of host publicationSynthesis and Properties of Silicones and Silicone-Modified Materials
PublisherAmerican Chemical Society
Pages181-193
Number of pages13
ISBN (Electronic)9780841219410
ISBN (Print)9780841238046
DOIs
Publication statusPublished - 10 Mar 2003

Publication series

NameACS Symposium Series
PublisherAmerican Chemical Society
Volume838
ISSN (Print)0097-6156
ISSN (Electronic)1947-5918

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  • Cite this

    Roberts, CH., Cosgrove, T., Schmidt, RG., Gordon, GV., Goodwin, AJ., & Kretschmer, A. (2003). NMR Spin Relaxation, Self-Diffusion and Viscosity Studies of Poly(dimethylsiloxane)s Blended with Silicate Nanoparticles. In Synthesis and Properties of Silicones and Silicone-Modified Materials (pp. 181-193). (ACS Symposium Series; Vol. 838). American Chemical Society. https://doi.org/10.1021/bk-2003-0838.ch017