Gelation of siloxane–poly(oxypropylene) composites
✍ Scribed by Victor H.V. Sarmento; Karim Dahmouche; Celso V. Santilli; Sandra H. Pulcinelli
- Book ID
- 117145767
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 278 KB
- Volume
- 304
- Category
- Article
- ISSN
- 0022-3093
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## Abstract A thin‐layer chromatographic method has been developed for the quantitative determination of poly(oxypropylene diols) present in poly(oxypropylene triols). The polyols are separated on silica gel plates in a modified developing chamber using ethyl acetate as the developer. Quantitative
We have studied by \*'Si NMR and small angle neutron scattering the cross-linking by formation of siloxane bridges of two amino-epoxy-silane molecules at different concentration in acidic water. We relate our observations to the fact that one of the studied systems never gels, whiIe the second one d