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Titolo:
Organic-inorganic hybrid from ionomer via sol-gel reaction
Autore:
Gao, Y; Choudhury, NR; Dutta, N; Matisons, J; Reading, M; Delmotte, L;
Indirizzi:
Univ S Australia, Ian Wark Res Inst, Polymer Sci Grp, Mawson Lakes, SA 5095, Australia Univ S Australia Mawson Lakes SA Australia 5095 Lakes, SA 5095, Australia Loughborough Univ Technol, Inst Polymer Technol & Mat Engn, Loughborough LE11 3TU, Leics, England Loughborough Univ Technol Loughborough Leics England LE11 3TU cs, England Ecole Natl Super Chim, F-68093 Mulhouse, France Ecole Natl Super Chim Mulhouse France F-68093 , F-68093 Mulhouse, France
Titolo Testata:
CHEMISTRY OF MATERIALS
fascicolo: 10, volume: 13, anno: 2001,
pagine: 3644 - 3652
SICI:
0897-4756(200110)13:10<3644:OHFIVS>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
PULSED-FORCE-MODE; COMPOSITE-MATERIALS; POLYMER HYBRIDS; SILICA; TETRAETHOXYSILANE; NANOCOMPOSITES; DYNAMICS; ROUTES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Choudhury, NR Univ S Australia, Ian Wark Res Inst, Polymer Sci Grp, MawsonLakes, SA 5095, Australia Univ S Australia Mawson Lakes SA Australia 5095, Australia
Citazione:
Y. Gao et al., "Organic-inorganic hybrid from ionomer via sol-gel reaction", CHEM MATER, 13(10), 2001, pp. 3644-3652

Abstract

Transparent organic-inorganic hybrid material was synthesized via the sol-gel method using polyethylene-co-Zn-acrylic acid (Zn-PEAA) ionomer and a metal alkoxide, tetraethyl orthosilicate (TEOS). The resulting material was characterized using various spectroscopic, microscopic, and thermal techniques. Photoacoustic Fourier transform infrared spectroscopy (PA-FTIR) and Si-29 solid-state nuclear magnetic resonance spectroscopy (29Si solid-state NMR) results prove that silica is formed via the sol-gel reaction. Scanning electron microscopy with energy-dispersive X-ray analysis (SEM-EDAX), transmission electron microscopy (TEM), and atomic force microscopy (AFM) studiesindicate that silica particle size is in nanoscopic level (50 nm average size), and silica nanoparticles are uniformly dispersed in the polymer matrix after the sol-gel process. Thermogravimetric analysis (TGA) results show that the silica content of the hybrid is about 19%. The thermal stability of the ionomer increases after hybridization. The crystallinity of the hybrid material is found to decrease from modulated differential scanning calorimetry (MDSC) and wide-angle X-ray scattering (WAYS) results. Dynamic mechanical analysis (DMA) of the hybrid shows that the storage modulus of ionomerincreases after the sol-gel reaction, and the order-disorder transition temperature of the ionic cluster also increases, indicating the existence of silica mostly in the microphase separated cluster template.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 20:29:10