絲素-聚氨酯共混膜的研究.pdf

1、蘇州大學碩士學位論文絲素聚氨酯共混膜的研究姓名：王曉英申請學位級別：碩士專業(yè)：紡織工程指導教師：吳徵宇2002.4.1蘭墅旦莖塑墅苧塑墮墮型魚塑燮塞莖壅塑墨Studyonsilkfibroin／polyurethaneblendfilmsAbstractThreekindsofWater—bornepolyurethanewereselectedtoprepareblendfilmswithsilkfibroin，namelySF／PU

2、blendfilmsTheconditionsandmethodsofpreparingfilmswereinvestigatedThestructureofblendfilmsatdifferentblendratioswasstudiedbymeansofX—raydiffraction，F(xiàn)TIRspectra，differentialscanningcalorimetry(DSC)andthermograVimetryanalys

3、is(TGA)Themorphologyoftheblendfilmsandthedistributionofthetwocomponentswereobservedwithscanningelectronicmicrophotograph(SEM)，andthestrengthandelongationatbreak，initialtensilemodulus，compressibilitywater—vaporpermeabilit

4、yandtheweightlossrateofsilkfibroininblendfilmsweredeterminedTheresultsofbothXraydiffractionandFTIRspectrashowedthattheresomehowexistedsomemutualinfluencebetweenthetwocomponentsinSF／PUblendfilms，whichinducedtheformationof

5、SilkIIinblendfilms，andtheresultofthermalanalysisindicatedthatthethermalstabilityofsilkfibroinintheblendfilmswasimproved，whichwasattributedtotheadditionofpolyurethaneItwasshowedintheSEMthatthemorphologyofblendfilmsatdiffe

6、rentblendratioswasdifferentapparentlyandthefilmatblendratioof50tO50displayedarelativelyevenanddelicatemorphologyWiththeincreaseofpolyurethanepercentageinblendfilms，thebrokenstrength，theinitialtensilemodulusandthecompress

7、ionlinearratedecreasedandtheelongationatbreakincreasedThewater—vaporpermeabilityandtheweightlossrateofsilkfibroinvariedinadownwardorderof75／25，25／75and50／50(SF／PUinblendfilm)Keywords：silkfibroin；polyurethane；blend；films；