Some laws of a lignin plasticization

被引：103

作者：

Bouajila, J. ^{[1
]}

Dole, P. ^{[1
]}

Joly, C. ^{[1
]}

Limare, A. ^{[1
]}

机构：

[1] URCA, INRA, UMR, FARE CPCB, Reims 2, France

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2006年 / 102卷 / 02期

关键词：

lignin; plasticization; coplasticization; glass transition;

D O I：

10.1002/app.24299

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A comparison of the plasticizing efficiency of a series of molecules introduced in dry and hydrated Kraft lignin demonstrated that the plasticization mechanisms are different before and after sorption site saturation. Lignins were plasticized in two steps and glass transition decrease was determined from DSC measurements. "Specific sorption plasticizers," such as water, are very efficient in low content because of their functionality and accessibility to sorption sites. The plasticizing efficiency does not depend on the solubility parameter, and is well quantified, considering the molar concentration of donor/acceptor functions. After saturation of sorption sites (in wet conditions), the plasticizing efficiency depends on the solubility parameter, which should be close to that of the polymer matrix. (c) 2006 Wiley Periodicals, Inc.

引用

页码：1445 / 1451

页数：7

共 15 条

[1] Calorimetric evaluation of the glass transition in hydrated, linear and branched polyanhydroglucose compounds [J].