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- W2356617080 abstract "Acetic acid lignin(AL) from acetic acid pulping was isolated and purified.Chemical structure and molecular weight of AL were studied with infrared spectroscopy and GPC determination.Thermal and physical characteristics of AL-based polyurethane were determined by TGA and DSC respectively.The results showed that AL has the typical structure of polyol.A part of AL was acetylated.However,the dissolution property of AL was good and molecular weight of AL was relatively high.As compared with PEG-based polyurethane(PU),AL-based polyurethane has higher glass transition temperature and lower degradation ratio of polyurethane below 600 ℃.These indicated that AL-based polyurethane had relatively better heat resistance.In addition,tensile strength and elongation of AL-based polyurethane,which were decreased as the lignin amount was increased,were lower compared with PEG-based polyurethane.These would mean that the rigidity of AL-based polyurethane were increased by addition of AL." @default.
- W2356617080 created "2016-06-24" @default.
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- W2356617080 date "2004-01-01" @default.
- W2356617080 modified "2023-09-28" @default.
- W2356617080 title "SYNTHESIS OF POLYURETHANE FROM ACETIC ACID LIGNIN AND ITS PROPERTIES" @default.
- W2356617080 hasPublicationYear "2004" @default.
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