Synthesis of foaming resol resin modified with oxidatively degraded lignosulfonate

被引：37

作者：

Hu, Lihong ^{[1
]}

Zhou, Yonghong ^{[1
]}

Liu, Ruijie ^{[1
]}

Zhang, Meng ^{[1
]}

Yang, Xiaohui ^{[1
]}

机构：

[1] CAF, Res Inst New Technol, Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu, Peoples R China

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2013年 / 44卷

关键词：

Lignosulfonate; Oxidative degradation; Phenolic compouds; Resol resin; Phenolic foam; LIGNIN; PERFORMANCE; SUBSTITUTE; PHENOLS;

D O I：

10.1016/j.indcrop.2012.11.034

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A new method of introducing lignosulfonate into foaming resol resin was explored in the present work. Lignosulfonate was oxidatively degraded to phenolic compounds in water medium (pH = 10), lignosulfonate concentration (based on total weight of lignosulfonate and water) was 50%. Effects of degradation temperature, reaction time, and H2O2 dosage on number average molecular weight (M-w) and weight average molecular weight (M-n) of oxidatively degraded lignosulfonate (ODL) were investigated. The optimal degradation conditions were: temperature was about 60 degrees C, reaction time 2h, and H2O2 concentration (based on weight of lignosulfonate) 6 wt%, where M-w and M-n attained a minimum 998 and 493, respectively. Foaming resol resin modified with ODL was synthesized under an alkaline condition. Phenolic foam made from modified resol resin (30 wt% replacement of phenol by ODL) and other chemicals possessed satisfied properties. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：364 / 366

页数：3

共 14 条

[1] Use of a methylolated softwood ammonium lignosulfonate as partial substitute of phenol in resol resins manufacture [J].