The Effect of Microwave Treatment on the Hydrogen Peroxide Bleaching of Soda-AQ Wheat Straw Pulp

Article Preview

Abstract:

In this paper, the effect of microwave treatment on the hydrogen peroxide bleaching of Soda-AQ wheat-straw pulp was investigated. The results showed that microwave treatment could increase the brightness of the hydrogen peroxide bleached pulp. The fiber coarseness of microwave enhancing peroxide bleached pulp was higher than that of the peroxide bleached pulp. However, the arithmetic average fiber length, the length weighted average fiber length and weight weighted average fiber length of the former was lower than that of the latter. Fourier transform infra-red spectroscopy (FTIR) and X-ray diffraction (XRD) spectra showed that CrI(%) crystallinity of microwave enhancing peroxide bleached pulp was similar as that of the peroxide bleached pulp but all higher than that of the Soda-AQ wheat-straw pulp. N·O′KI infra-red crystalline index of microwave enhancing peroxide bleached pulp were lower than that of the peroxide bleached pulp. The FTIR spectra of lignin showed that the microwave treatment had some influences on the methoxyl and phenolic group in lignin.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 236-238)

Pages:

1307-1312

Citation:

Online since:

May 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] K.N. Law, S.G. Luo, J.L. Valade: JPPS Vol.19(1993), P. J181

Google Scholar

[2] Wan J.K.S, Radoiu M, Kalatchev I: Research on Chemical Intermediates Vol. 26(2000), P. 931

Google Scholar

[3] Law K.N, Luo S.G, Valade J.L: 78th Annual Meeting of the Canadian Pulp and Paper Association (1992)

Google Scholar

[4] Tavanai H, Khoddami A: Journal of Science and Technology Vol.15(2004), P. 489

Google Scholar

[5] Tarakcioqlu I, Anis P: Journal of the Textile Institute Part 1 Vol.87(1996), P. 602

Google Scholar

[6] Jianying Li, Qing Shao, Yu Deng: China Pulp and Paper,Vol.23(2004), P. 1,in Chinese

Google Scholar

[7] Shaoguang Wang, Shubin Wu, Yi-li Guo: Journal of South China University of Technology, Vol.34(2006), P. 101,in Chinese

Google Scholar