Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Analysis of structures of oligomeric siloxanes from dimethoxydimethylsilane under heat treatment by FT-IR
Autore:
Takano, N; Fukuda, T; Ono, K;
Indirizzi:
Ibaraki Univ, Dept Mat Sci, Hitachi, Ibaraki 3168511, Japan Ibaraki Univ Hitachi Ibaraki Japan 3168511 itachi, Ibaraki 3168511, Japan Hitachi Chem Co Ltd, Res & Dev Ctr, Shimodate 3088251, Japan Hitachi Chem Co Ltd Shimodate Japan 3088251 tr, Shimodate 3088251, Japan
Titolo Testata:
POLYMER JOURNAL
fascicolo: 6, volume: 33, anno: 2001,
pagine: 469 - 474
SICI:
0032-3896(2001)33:6<469:AOSOOS>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Keywords:
siloxane oligomer; heat treatment; Fourier Transform Infrared Spectrometry (FT-IR); CIRCLE cell method; diffuse reflectance spectroscopy; alkoxysilane; linear siloxane;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Takano, N Ibaraki Univ, Dept Mat Sci, 4-12-1 Nakanarusawacho, Hitachi, Ibaraki 3168511, Japan Ibaraki Univ 4-12-1 Nakanarusawacho Hitachi Ibaraki Japan 3168511
Citazione:
N. Takano et al., "Analysis of structures of oligomeric siloxanes from dimethoxydimethylsilane under heat treatment by FT-IR", POLYM J, 33(6), 2001, pp. 469-474

Abstract

The structures of dimethoxydimethylsilane oligomers were investigated before and after heat treatment. FT-IR CIRCLE was used to analyze the structures of siloxane oligomers in solution before annealing, and diffuse reflectance was used to analyze them after annealing. Linear siloxane components were predominant in oligomer solution, while half the volume fraction was changed into ring form after annealing. Ring formation proceeded further with increasing molecular weight of the oligomer in solution. When hydrochloric acid (HCl) was used as catalyst for the reaction, the fraction of linear siloxane component was higher and ring formation was easier than without catalyst or with basic DMF catalyst.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 02:48:27