Solid-state organization of poly(methylmethacrylate)–poly(methylphenylsiloxane) based interpenetrating networks

Autor:	J.-R Caille, Françoise Lauprêtre, Dominique Teyssié, Sylvie Boileau, L Brachais
Rok vydání:	2002
Předmět:	Materials science Polymers and Plastics Organic Chemistry Radical polymerization Solid-state Carbon-13 NMR Line width Crystallography Differential scanning calorimetry Poly methylmethacrylate Polymer chemistry Materials Chemistry Interpenetrating polymer network Nanoscopic scale
Zdroj:	Polymer. 43:1829-1834
ISSN:	0032-3861
DOI:	10.1016/s0032-3861(01)00764-9
Popis:	Three interpenetrating networks based on polymethylphenylsiloxane (PMPS) and polymethylmethacrylate (PMMA) with different compositions were prepared. They were investigated using differential scanning calorimetry (DSC) and high-resolution solid-state 13 C NMR techniques, in order to study the heterogeneous character of the domains involved in these materials at the nanoscopic scale. DSC observed broad glass transitions of the PMPS chains. 13 C cross-polarization (CP) experiments clearly showed that the aromatic PMPS carbons have a rate of CP which is composition dependent, indicating that PMPS and PMMA chains are interpenetrating at a very low spatial scale. These results were supported by T 1 ρ ( 1 H) and 13 C line width measurements as a function of temperature. Moreover, T 1 ρ ( 1 H) measurements indicated that PMMA chains are rather homogeneously distributed whereas PMPS chains belong either to interpenetrating domains or to PMPS-rich domains.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9a5b95ec5d42669e9be964d35cc8d676 https://doi.org/10.1016/s0032-3861(01)00764-9 Zobrazit plný text záznamu Full Text from ScienceDirect