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- E-ISSN 2288-8985
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Temperature-dependent studies on catalytic hydrosilation of polyalkylsiloxane using NMR
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2017, v.30 no.4, pp.213-219
https://doi.org/10.5806/AST.2017.30.4.213
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(2017). Temperature-dependent studies on catalytic hydrosilation of polyalkylsiloxane using NMR. Analytical Science and Technology, 30(4), 213-219, https://doi.org/10.5806/AST.2017.30.4.213
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Abstract
Polyalkylsiloxane has been spotlighted in pressure-sensitive adhesive (PSA) application due to excellent physical properties and good biocompatibility. Thermal behaviour of polyalkylsiloxane mixtures, such as thermal stability and heat flow, were studied using TG-DTA during catalytic hydrosilation. To understand reaction kinetics of cross-linking, catalytic hydrosilation of polyalkylsiloxane was monitored using variable temperature nuclear magnetic resonance (VT-NMR) as increased temperature. The formation of cross-linking bond Si-CH2-CH2-Si was directly observed using distortionless enhanced by polarization transfer (DEPT) technique. Successfully polyalkylsiloxane PSA samples exhibited excellent adhesion properties by cross-linking reaction.
- keywords
- VT-NMR, catalytic hydrosilation, cross-linking, polyalkylsiloxane, pressure-sensitive adhesive
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