Models for the trapping of cyclic poly(dimethylsiloxane) (PDMS) chains in PDMS networks
β Scribed by DeBolt, L. C.; Mark, J. E.
- Book ID
- 126509721
- Publisher
- American Chemical Society
- Year
- 1987
- Tongue
- English
- Weight
- 785 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0024-9297
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π SIMILAR VOLUMES
Cyclic poly(dimethylsiloxane) (PDMS) was prepared from commercially available linear a,u-dihydroxy-PDMS by a platinum-catalyzed dehydrocoupling of its chain ends with a,u-dihydrido-PDMS in dilute solution. Ring closing was verified by MALDI-ToF mass spectrometry along with GPC, IR, 1 H and 29 Si NMR
## Abstract Polymeric catenanes have been made from poly(2,6βdimethylβ1,4βphenylene oxide) crosslinked in the presence of several, paucidisperse poly(dimethylsiloxane) cyclics of varying degrees of polymerization. The fraction of cyclic threaded or captured by the polymer network increases as the d