STUDIES ON THE MECHANISM OF THE PHOTOYELLOWING OF BLEACHED MECHANICAL AND CHEMIMECHANICAL PULPS .1. THE ROLE OF SINGLET OXYGEN

被引：18

作者：

TAKAGI, H ^{[1
]}

FORSSKAHL, I ^{[1
]}

PERAKYLA, H ^{[1
]}

OMORI, S ^{[1
]}

DENCE, CW ^{[1
]}

机构：

[1] SUNY COLL ENVIRONM SCI & FORESTRY,EMPIRE STATE PAPER RES INST,SYRACUSE,NY 13210

来源：

HOLZFORSCHUNG | 1990年 / 44卷 / 03期

关键词：

Apocynol; BleachedTMP (Spruce); Photoyellowing; Singlet oxygen; Singlet oxygen acceptors;

D O I：

10.1515/hfsg.1990.44.3.217

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Light-shielded sheets of peroxide-bleachedTMP were exposed to singlet oxygen generated in the thermal decomposition of 1,4-dimethylnaphthalene endoperoxide and by the Rose Bengal-photosensitized activation of triplet oxygen. In both instances, singlet oxygen treatment had little or no effect on the brightness of the bleachedTMP. A lignin model compound, apocynol, was coated on the surface ofWhatman filter paper and exposed to singlet oxygen generated by the photosensitization method. In this case, a small (1—2 point) decrease in brightness was observed. Attempts to identify photooxidation products in the methanol extract of the exposed filter paper were unsuccessful. © 1990, Walter de Gruyter. All rights reserved.

引用

页码：217 / 222

页数：6

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