EFFECT OF ANNEALING ON PROPERTIES OF LIGNIN-BASED POLYURETHANE FILMS

被引：0
|
作者：
Yang, Wei [1 ]
Aorigele [1 ]
机构：
[1] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
来源：
16TH INTERNATIONAL SYMPOSIUM ON WOOD, FIBER AND PULPING CHEMISTRY, PROCEEDINGS, VOLS I & II | 2011年
关键词：
polyurethane; lignin; annealing; effect; film; MECHANICAL-PROPERTIES; FOAMS; MDI;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of lignin-based polyurethane (PU) were synthesized using lignin, polyethylene glycol (PEG) and diisocynate (TDI and MDI). Acetic acid-extracted lignin (AAL) from eucalyptus and alkali-extracted lignin from cornstalk (AEL) were employed as the polyol components to substitute some traditional polyols. Polyurethane thin films were prepared by solvent casting method and annealed at 60 similar to 450 degrees C for 2 similar to 72h. The gel fraction increased by nearly 20% after annealing treatment. The results of thermogravimetric analysis demonstrated that the thermal stability of the films was improved significantly The data of tensile tests indicated that the tensile properti of the lignin-based PU films were enhanced by annealing at 80 similar to 100 degrees C within 24h.
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收藏
页码：1334 / 1337
页数：4
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