Phenolic Foam from Oxidatively Degradated Lignosulphonate

Li Hong Hu; Yong Hong Zhou; Rui Jie Liu; Meng Zhang

doi:10.4028/www.scientific.net/AMR.581-582.238

Paper Titles

Study of Microwave Synthesis of 2 - Hydroxy Phosphono Acetic Acid Process
p.219

Preparation and Application Study on the Coalmine Wastewater Flocculant - PAM/OMMT
p.223

Kinetic Study of the Esterification Reaction of Ethylene Glycol with Phenyl Phosphonic Acid and Benzene Phosphinic Acid
p.228

The Study on Moisture Adsorption of Oxidized Activated Carbon
p.233

Phenolic Foam from Oxidatively Degradated Lignosulphonate
p.238

Study on Influence Factors in Flocculation Conditions of Bioflocculant
p.242

Preparation of Polycarboxylate Terpolymer High Performance Water Reducer of MA-AA-F108
p.246

Reusable and Efficient PS-Supported Acidic Ionic Liquid Catalyst for Mononitration of Toluene
p.252

Preparation and Properties of Cross-Linked Enzyme Aggregates of Cellulase
p.257

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Phenolic Foam from Oxidatively Degradated Lignosulphonate

Abstract:

High molecular weight lignosulfonate was oxidatively degrdadated into lower molecular weight fractions, the resulting components were conducted to formulate resol resin with phenol and formaldehyde in an alkaline condition, in which 50% phenol was substituted. The modified resol resin was successfully applied to prepare phenolic foam using appropriate combinations of flowing agents. N-pentane was found to be suitable as the foaming agent. Sulphuric acid (50% aqueous solution, w/w) and Tween-80 were used as catalyst and surfactant, respectively. The obtained foams showed satisfactory mechanical properties and excellent uniform cells, which can comply with the required specifications for its practical utilization.