Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Organic-inorganic hybrid materials. I. Characterization and degradation ofpoly(imide-silica) hybrids
Autore:
Wu, KH; Chang, TC; Wang, YT; Chiu, YS;
Indirizzi:
Chung Cheng Inst Technol, Dept Appl Chem, Tao Yuan 33509, Taiwan Chung Cheng Inst Technol Tao Yuan Taiwan 33509 m, Tao Yuan 33509, Taiwan Chung Shan Inst Sci & Technol, Chem Syst Res Div, Tao Yuan 32526, Taiwan Chung Shan Inst Sci & Technol Tao Yuan Taiwan 32526 o Yuan 32526, Taiwan
Titolo Testata:
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
fascicolo: 13, volume: 37, anno: 1999,
pagine: 2275 - 2284
SICI:
0887-624X(19990701)37:13<2275:OHMICA>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOL-GEL PROCESS; COUPLING AGENTS; POLYIMIDES; NMR; POLYDIMETHYLSILOXANE; MICROSTRUCTURE; ALKOXYSILANE; COPOLYMERS; C-13;
Keywords:
silica; hybrids; sol-gel; spin-spin relaxation; degradation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Chang, TC Chung Cheng Inst Technol, Dept Appl Chem, Tao Yuan 33509, TaiwanChung Cheng Inst Technol Tao Yuan Taiwan 33509 n 33509, Taiwan
Citazione:
K.H. Wu et al., "Organic-inorganic hybrid materials. I. Characterization and degradation ofpoly(imide-silica) hybrids", J POL SC PC, 37(13), 1999, pp. 2275-2284

Abstract

Poly(imide-silica) hybrid materials with covalent bonds were prepared by (3-aminopropyl)methyldiethoxysilane (APrMDEOS) terminated amic acid, water, and tetramethoxysilane (TMOS) via a sol-gel technique. Infrared (IR), Si-29and C-13 CP/ MAS nuclear magnetic resonance (NMR) spectroscopy, and thermogravimetric analysis (TGA) were used to study hybrids containing various proportions of TMOS and hydrolysis ratios. The microstructure and chain mobility of hybrids were investigated by proton spin-spin relaxation T-2 measurements. The apparent activation energy E-a for degradation of hybrids in airwas studied by the van Krevelen method. (C) 1999 John Wiley & Sons, Inc. JPolym Sci A: Polym Chem 37: 2275-2284, 1999.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 12:34:15