KINETIC CHARACTERIZATION BY DIFFERENTIAL ENTHALPY ANALYSIS OF LIGNOSULFONATE-BASED PHENOL-FORMALDEHYDE RESINS

被引：10
|
作者：
MATUANA, LM [1 ]
RIEDL, B [1 ]
BARRY, AO [1 ]
机构：
[1] UNIV LAVAL,FAC FORESTERIE & GEOMAT,DEPT SCI BOIS,QUEBEC CITY G1K 7P4,QUEBEC,CANADA
来源：
EUROPEAN POLYMER JOURNAL | 1993年 / 29卷 / 04期
关键词：
D O I：
10.1016/0014-3057(93)90004-Y
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Differential scanning calorimetry (DSC) and thermogravimetry (TG) were used to characterize various types of lignin and phenol-formadehyde resin (PF), as well as lignin-based phenolic resins (LPF) as mixtures with 20, 30 and 40% PF replacement by lignin. These studies have allowed comparison of thermal stability of the lignins and characterization of the curing reaction of LPF mixtures. The thermal properties as determined by TG have shown that lignin can be used as a copolymer in phenolic adhesives. The kinetic parameters (the activation energy, the heat of reaction and the degree of polymer conversion) obtained by DSC, as well as the isotherms calculated with these parameters, are effective in the accurate representation of the role of lignin in lignin-based phenolic resin formulations.
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页码：483 / 490
页数：8
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