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Type: Artigo de periódico
Title: Hybrids of cellulose acetate and sol-gel silica: Morphology, thermomechanical properties, water permeability, and biodegradation evaluation
Author: Zoppi, RA
Goncalves, MC
Abstract: Hybrids based on cellulose acetate (CA) and SiO2 were prepared by hydrolysis of tetraethoxysilane (TEOS). More rigid films were obtained with an inorganic phase incorporation. The thermal stability of the hybrids was similar to pure CA. Composite membranes were prepared by casting of CA/TEOS mixtures onto a poly(vinylidene fluoride) support. The water permeation decreased with the incorporation of the inorganic phase. Hybrid membranes were able to retain solutes with a molar mass of congruent to 9000 g/mol ( congruent to98% retention). Hybrids were submitted to biodegradation tests. The presence of the inorganic phase did not inhibit the growth of Thricoderma harzianum fungi. (C) 2002 Wiley Periodicals, Inc.
Subject: sol-gel process
cellulose acetate
Country: EUA
Editor: John Wiley & Sons Inc
Citation: Journal Of Applied Polymer Science. John Wiley & Sons Inc, v. 84, n. 12, n. 2196, n. 2205, 2002.
Rights: fechado
Identifier DOI: 10.1002/app.10427
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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