Effect of chemical treatments on properties of green coconut fiber

被引：254

作者：

Brigida, A. I. S. ^{[1
]}

Calado, V. M. A. ^{[2
]}

Goncalves, L. R. B. ^{[3
]}

Coelho, M. A. Z. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Escola Quim, Dept Eng Bioquim, BR-21949900 Rio De Janeiro, RJ, Brazil

[2] Univ Fed Rio de Janeiro, Escola Quim, Dept Eng Quim, BR-21949900 Rio De Janeiro, RJ, Brazil

[3] Univ Fed Ceara, Dept Eng Quim, BR-60455760 Fortaleza, CE, Brazil

来源：

CARBOHYDRATE POLYMERS | 2010年 / 79卷 / 04期

关键词：

Green coconut fiber; Chemical treatment; SEM; Thermal analysis; FTIR; Wettability; SCANNING-ELECTRON-MICROSCOPY; LIGNOCELLULOSIC FIBERS; MORPHOLOGY; ADSORPTION; BRAZIL;

D O I：

10.1016/j.carbpol.2009.10.005

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Green coconut fiber. a lignocellulosic material native from Brazilian northeast coast, was chemically treated by three methods: NaOCl, NaOCl/NaOH or H2O2. The effect of these treatments on the structure, composition and properties of fibers was studied using SEM, FTIR, XPS, TGA and other analyses. SEM showed that treatment with H2O2 is the most efficient in terms of waxy and fatty acid residues removal but it does not modify the surface chemical composition, that it can be seen by FTIR and wettability results. The chemical composition and FTIR analyses revealed a reduction of the hemicelluloses content in the fibers treated with NaOCl/NaOH and, consequently, this fiber showed a greater exposure of cellulose and a reduction in thermal stability. The fiber surface treated with NaOCl is morphologically similar to the natural fiber surface, have the element Cl on your surface and it is a little more hydrophilic than the natural fiber. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：832 / 838

页数：7

共 29 条

[1] Study of banana and coconut fibers - Botanical composition, thermal degradation and textural observations [J].

Bilba, Ketty ;

Arsene, Marie-Ange ;

Ouensanga, Alex .

BIORESOURCE TECHNOLOGY, 2007, 98 (01) :58-68

[2]

Brigida AIS, 2003, P INTERAMER SOC TROP, V47, P25

[3] Immobilization of Candida antarctica lipase B by adsorption to green coconut fiber [J].

Brigida, Ana I. S. ;

Pinheiro, Alvaro D. T. ;

Ferreira, Andrea L. O. ;

Goncalves, Luciana R. B. .

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 2008, 146 (1-3) :173-187

[4] Immobilization of Candida antarctica lipase B by covalent attachment to green coconut fiber [J].

Brigida, Ana I. S. ;

Pinheiro, Alvaro D. T. ;

Ferreira, Andrea L. O. ;

Pinto, Gustavo A. S. ;

Goncalves, Luciana R. B. .

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 2007, 137 (1-12) :67-80

[5]

Carrijo Osmar Alves, 2002, Hortic. Bras., V20, P533, DOI 10.1590/S0102-05362002000400003

[6]

Coelho M. A. Z., 2001, Boletim do Centro de Pesquisa e Processamento de Alimentos, V19, P33

[7] A preliminary study for the use of natural fibers as reinforcement in starch-gluten-glycerol matrix [J].

Corradini, Elisangela ;

de Morais, Luis ;

Rosa, Morsyleide de F. ;

Mazzetto, Selma E. ;

Mattoso, Luiz H. C. ;

Agnelli, Jose A. M. .

MACROMOLECULAR SYMPOSIA, 2006, 245 :558-564

[8] Thermal analysis of less common lignocellulose fibers [J].

d'Almeida, A. L. F. S. ;

Barreto, D. W. ;

Calado, V. ;

d'Almeida, J. R. M. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2008, 91 (02) :405-408

[9] Profiling C6-C3 and C6-C1 phenolic metabolites in Cocos nucifera [J].

Dey, G ;

Chakraborty, M ;

Mitra, A .

JOURNAL OF PLANT PHYSIOLOGY, 2005, 162 (04) :375-381

[10] Immobilization of α-amylase from Bacillus circulans GRS 313 on coconut fiber [J].

Dey, G ;

Nagpal, V ;

Banerjee, R .

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 2002, 102 (1-6) :303-313

← 1 2 3 →