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Titolo:
Surface chemical modification of natural cellulose fibers
Autore:
Baiardo, M; Frisoni, G; Scandola, M; Licciardello, A;
Indirizzi:
Univ Bologna, Dept Chem G Ciamician, I-40126 Bologna, Italy Univ Bologna Bologna Italy I-40126 m G Ciamician, I-40126 Bologna, Italy CNR, Ctr Studio Fis Macromol, I-40126 Bologna, Italy CNR Bologna Italy I-40126 tr Studio Fis Macromol, I-40126 Bologna, Italy Univ Catania, Dept Chem Sci, I-95125 Catania, Italy Univ Catania CataniaItaly I-95125 Dept Chem Sci, I-95125 Catania, Italy
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 1, volume: 83, anno: 2002,
pagine: 38 - 45
SICI:
0021-8995(20020103)83:1<38:SCMONC>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
STEAM EXPLOSION; COUPLING AGENTS; COMPOSITES; POLYETHYLENE; ADHESION; WOOD;
Keywords:
fibers; polysaccharides; esterification; surfaces;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Scandola, M Univ Bologna, Dept Chem G Ciamician, Via Selmi 2, I-40126 Bologna, Italy Univ Bologna Via Selmi 2 Bologna Italy I-40126 Bologna, Italy
Citazione:
M. Baiardo et al., "Surface chemical modification of natural cellulose fibers", J APPL POLY, 83(1), 2002, pp. 38-45

Abstract

Simple esterification and etherification reactions were applied to steam-exploded Flax (Linum usitatissimum) with the aim of changing the surface properties through modification of fiber surface chemistry. Native and chemically modified cellulose fibers were characterized in terms of thermal stability, surface chemistry, morphology, and crystal structure. Independent of the substituent nature, chemically modified fibers exhibited a thermal stability comparable to that of native cellulose. Introduction of the desired chemical groups at the fiber surface was demonstrated by TOF-SIMS analysis, whereas FTIR showed that the substitution reaction involved only a small fraction of the cellulose hydroxyls. No change of the native crystalline structure of cellulose fibers was caused by chemical modification, except in thecase where ether substitution was carried out in water-isopropanol medium. Cellulose fibers with unchanged structure and morphology and carrying at the surface the desired chemical groups were obtained for reinforcing applications in polymer composites. (C) 2002 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 05:10:36