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Titolo:
Chain dynamics and stability of the poly (3-methacryloxypropyltrimethoxysilane-co-vinylimidazole)
Autore:
Chang, TC; Yeh, TF; Yang, CW; Hong, YS; Wu, TR;
Indirizzi:
Natl Def Univ, Chung Cheng Inst Technol, Dept Appl Chem, Tao Yuan 335, Taiwan Natl Def Univ Tao Yuan Taiwan 335 , Dept Appl Chem, Tao Yuan 335, Taiwan Chung Shan Inst Sci & Technol, Chem Syst Res Div, Tao Yuan 325, Taiwan Chung Shan Inst Sci & Technol Tao Yuan Taiwan 325 , Tao Yuan 325, Taiwan
Titolo Testata:
POLYMER
fascicolo: 21, volume: 42, anno: 2001,
pagine: 8565 - 8570
SICI:
0032-3861(200110)42:21<8565:CDASOT>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
SILANE-MODIFIED POLYVINYLIMIDAZOLES; CORROSION-INHIBITORS; MODIFIED IMIDAZOLES; ADHESION PROMOTION; COPPER; BENZOTRIAZOLE; DEGRADATION; PROTECTION;
Keywords:
vinylimidazoe; methacryloxysilane; copolymer;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Chang, TC Natl Def Univ, Chung Cheng Inst Technol, Dept Appl Chem, Tahsi, Tao Yuan 335, Taiwan Natl Def Univ Tahsi Tao Yuan Taiwan 335 i, Tao Yuan 335, Taiwan
Citazione:
T.C. Chang et al., "Chain dynamics and stability of the poly (3-methacryloxypropyltrimethoxysilane-co-vinylimidazole)", POLYMER, 42(21), 2001, pp. 8565-8570

Abstract

The chain dynamics and the apparent activation energy of dehydration and decomposition of the ester bond for poly(3-methacryl-oxypropyl-trimethoxysilane-co-vinylimidazole) copolymer (PMPS-PVI), were examined by high-resolution solid-state Si-29 and C-13 nuclear magnetic resonance spectroscopy and thermogravimetric analysis (TGA). The Si-29-H-1 cross-polarization process revealed that the 3-methacryloxypropyltrimethoxysilane (MPS) components species had similar CP efficiency. The spin-lattice relaxation time in rotatingframe (T-1 rho(H)) of the copolymers indicated that the molecular motion of the imidazole ring was independent of the MPS content. The apparent activation energy of dehydration under nitrogen was dependent on the MPS content, while that of decomposition ester bond was independent of the MPS content. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 05:53:04