Study on Utilization of Acetic Acid Lignin in Synthesis of Polyurethane Foams

摘要：

Acetic acid lignin(AAL),which was isolated from Eucalyptus viminalis by acetic acid pulping,was used to replace part of PEG in the synthesis of polyurethane(PU)foams.The structure of AAL was characterized by 31P-NMR spectrum.Thermal stability of ALL-based polyurethane foams were investigated by TG/DSC.The results showed that AAL had the typical structure of polyol.It was indicated that the thermal degradation temperature of PU foams with AAL was lower than samlpe without AAL.The mass residue of PU foams at 600℃ was approximately 7.4％ higher than that without AAL.It was concluded that with AAL contents increasing,the degradation between the phenolic hydroxyl group in AAL and the isocyanate group become prominent and AAL act as a hard segment in PU network formation.

关键词： acetic acid lignin polyurethane foams

作者: YAN LI AORIGELE FANGENG CHEN XUESONG ZHOU ZHOU SHA

作者单位: State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,510640,China

会议类型: 国际会议

会议名称: 第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)

会议地点: 天津

会议语种:英文

页码: 171-174

在线出版日期: 2008-05-14（万方平台首次上网日期，不代表论文的发表时间）