New approach for upgrading pulp & paper quality: Mild potassium permanganate treatment of already bleached pulps

被引：9

作者：

Fahmy, Tamer Y. A. ^{[1
]}

Mobarak, Fardous ^{[1
]}

Kassem, Nesrine ^{[1
]}

Abdel-Kader, Amal H. ^{[1
]}

机构：

[1] Natl Res Ctr, Cellulose & Paper Dept, Cairo, Egypt

来源：

CARBOHYDRATE POLYMERS | 2008年 / 74卷 / 04期

关键词：

mild potassium permanganate treatment of cellulosic pulps; new approaches for upgrading pulp and paper quality;

D O I：

10.1016/j.carbpol.2008.05.008

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The present work introduces mild - room temperature - potassium permanganate treatment of cellulosic materials, namely already bleached pulps. Such treatment represents a new approach for upgrading pulp and paper quality, which is lacking in the literature. Potassium permanganate was investigated as a purifying and mild oxidizing agent for commercial already bleached softwood and bagasse pulps. It was found that treatment of the bleached beaten pulps, with 0.25-2% KMnO4 (based on pulp weight), led to significant improvement in paper properties. The strength (breaking length) increased greatly and the brightness increased significantly due to treatment. The improvements were related to the degree of polymerization, and to the alphacellulose content of pulps. Moreover, potassium permanganate serves as a disinfectant and deodorizer. Thus treatment of bleached pulps with KMnO4 is a promising remedy for the side effects which pulps suffer, during transportation and storage, before papermaking. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：892 / 894

页数：3