Effect of pre-treatment of Luffa fibres on the structural properties

被引:136
作者
Ghali, L. [1 ]
Msahli, S. [1 ]
Zidi, M. [2 ]
Sakli, F. [1 ]
机构
[1] ISET Ksar Hellal, Text Res Unit, Monastir 5070, Tunisia
[2] Natl Sch Engn Monastir, Mech Engn Lab, Monastir 5000, Tunisia
关键词
Luffa fibres; Electron microscopy; X-ray techniques; Crystallinity; Chemical treatment; CHLORELLA-SOROKINIANA; LOOFA SPONGE; SURFACE TREATMENTS; CYLINDRICA; REMOVAL; DECOLORIZATION; CADMIUM; SYSTEM; WATER;
D O I
10.1016/j.matlet.2008.09.008
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Recently, the use of lignocellulosic fibres to reinforcing composite has received an increased attention. However, lack of good interfacial adhesion makes important the treatment of raw materials. Chemical treatment prepared the raw material to be useful by elimination of gummy and waxy substances. In this study, the Luffa fibres were treated by tow methods: alkali treatment and mixed treatment (sodium hydroxide and hydrogen peroxide). The effect of these treatments on the structure of fibres was showed using SEM and XRD (X-Ray Diffraction) analysis. The SEM results revealed that both treatments resulted in a removal of lignin, pectin and hemicellulose substances, and change the characteristics of the surface topography. The XRD analysis shows the increase of crystallinity index by many treatment conditions. We find that the alkali treatment (120 degrees C; 3 h; 4% NaOH) shows a good cleaning and the higher crystallinity index of treated fibres. It is also interesting to note that mixed treatment can change the Luffa fibres from mat structure to fibrils structure. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:61 / 63
页数:3
相关论文
共 15 条
[1]   Evaluation of the use of loofa activated carbons as potential adsorbents for aqueous solutions containing dye [J].
Abdelwahab, Ola .
DESALINATION, 2008, 222 (1-3) :357-367
[2]   Removal and recovery of nickel(II) from aqueous solution by loofa sponge-immobilized biomass of Chlorella sorokiniana:: characterization studies [J].
Akhtar, N ;
Iqbal, J ;
Iqbal, M .
JOURNAL OF HAZARDOUS MATERIALS, 2004, 108 (1-2) :85-94
[3]   Chlorella sorokiniana immobilized on the biomatrix of vegetable sponge of Luffa cylindrica:: a new system to remove cadmium from contaminated aqueous medium [J].
Akhtar, N ;
Saeed, A ;
Iqbal, M .
BIORESOURCE TECHNOLOGY, 2003, 88 (02) :163-165
[4]   Biosorption characteristics of unicellular green alga Chlorella sorokiniana immobilized in loofa sponge for removal of Cr(III) [J].
Akhtar, Nasreen ;
Iqbal, Muhammad ;
Zafar, Saeed Iqbal ;
Iqbal, Javed .
JOURNAL OF ENVIRONMENTAL SCIENCES, 2008, 20 (02) :231-239
[5]   Aspects of alkali treatment of sponge gourd (Luffa cylindrica) fibers on the flexural properties of polyester matrix composites [J].
Boynard, CA ;
Monteiro, SN ;
d'Almeida, JRM .
JOURNAL OF APPLIED POLYMER SCIENCE, 2003, 87 (12) :1927-1932
[6]   Dye adsorption behavior of Luffa cylindrica fibers [J].
Demir, H. ;
Top, A. ;
Balkose, D. ;
Ulku, S. .
JOURNAL OF HAZARDOUS MATERIALS, 2008, 153 (1-2) :389-394
[7]   The effect of fiber surface treatments on the tensile and water sorption properties of polypropylene-luffa fiber composites [J].
Demir, H ;
Atikler, U ;
Balköse, D ;
Tihminlioglu, F .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2006, 37 (03) :447-456
[8]  
EDDINE BK, 2004, TEX RES J, V74, P241
[9]  
Gianpietro V., 2000, MULTIUSE CROPS PROGR, P82
[10]   Loofa sponge immobilized fungal biosorbent: A robust system for cadmium and other dissolved metal removal from aqueous solution [J].
Iqbal, M ;
Edyvean, RGJ .
CHEMOSPHERE, 2005, 61 (04) :510-518