TY - JOUR
T1 - High strength bio-composite films of poly(vinyl alcohol) reinforced with chemically modified-fly ash
AU - Nath, Dilip Chandra Deb
AU - Bandyopadhyay, Sri
AU - Yu, Aibing
AU - Blackburn, Daryl
AU - White, Chris
PY - 2010
Y1 - 2010
N2 - Fly ash (FA) was chemically modified by activation with sodium hydroxide and used in fabrication of bio-composite films with poly(vinyl alcohol) (PVA) by aqueous casting method. The particle size distribution patterns of modified-fly ash (MFA) were shifted from 2-20 ?m to the higher regions 2-40 ?m in the analysis chart of Malvern Light Scattering Particle Size Analyser (MLSPSA). On the oxides based chemical analysis by X-ray Fluorescence Spectroscopy (XRF), the compositions of major oxides, SiO2 73.5 , Al2O 3 19.2 and Na2O 1.4 were significantly changed to SiO2 52.9 , Al2O3 23.6 and Na2O 5.9 , due to the dissolution and re-crystallisation of new phases which are characterised by X-ray diffraction (XRD). The composite film reinforced with 20 wt MFA showed up to higher tensile strength 289 (three-fold) compared to those of unmodified FA filled films. The alkali treatment (sodium hydroxide) of FA is a very promising approach to improve the mechanical strength, and hence, further enhance the potential for recycling FA as a suitable filler material in bio-composite materials.
AB - Fly ash (FA) was chemically modified by activation with sodium hydroxide and used in fabrication of bio-composite films with poly(vinyl alcohol) (PVA) by aqueous casting method. The particle size distribution patterns of modified-fly ash (MFA) were shifted from 2-20 ?m to the higher regions 2-40 ?m in the analysis chart of Malvern Light Scattering Particle Size Analyser (MLSPSA). On the oxides based chemical analysis by X-ray Fluorescence Spectroscopy (XRF), the compositions of major oxides, SiO2 73.5 , Al2O 3 19.2 and Na2O 1.4 were significantly changed to SiO2 52.9 , Al2O3 23.6 and Na2O 5.9 , due to the dissolution and re-crystallisation of new phases which are characterised by X-ray diffraction (XRD). The composite film reinforced with 20 wt MFA showed up to higher tensile strength 289 (three-fold) compared to those of unmodified FA filled films. The alkali treatment (sodium hydroxide) of FA is a very promising approach to improve the mechanical strength, and hence, further enhance the potential for recycling FA as a suitable filler material in bio-composite materials.
UR - http://goo.gl/bX8ao7
UR - https://www.scopus.com/pages/publications/76649130179
U2 - 10.1007/s10853-009-4091-6
DO - 10.1007/s10853-009-4091-6
M3 - Article
SN - 0022-2461
VL - 45
SP - 1354
EP - 1360
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 5
ER -