殼聚糖-聚乙烯醇共混膜的性能及相容性研究.pdf

1、湖北大學(xué)碩士學(xué)位論文殼聚糖聚乙烯醇共混膜的性能及相容性研究姓名：王七容申請學(xué)位級別：碩士專業(yè)：高分子材料指導(dǎo)教師：何培新20080501AbstractPolymersBlendingisoneofmethodsofmaterialmodificationTheexcellentsynergicactivityofblendsisdependedonthecompatibilityofcomponentsChitosan(CTS)and

2、Polyvinylalcohol(PVA)withfavorablebiocompatibleandfilmprocessingabilityarenontoxic、non—stimulative，whichareavailableasfoodpacking，drug—packingandmembraneseparationThestudyoffilmsofCTS／PVAblendshasbeenreportedwidelyButthe

3、irconclusionshaveconflictsontheblendcompatibilityofCTS／PVAToobtainthematerialwithexcellentperformance，ItisnecessarytostudytheeffectofblendratioandmolecularontheblendcompatibilityThemainfactorsinfluencedtheblendcompatibil

4、itywhicharediscussedinthethesis，areasfollows：(1)theoptimalblendingratioofCTS／PVA；(2)theblendcompatibilityofCTS／PVAwithdifferentblendingratio；(3)thedifferentcompatibilityofCTS／PVAfilmpreparedbyCTSwithdiversitymolecularwei

5、ghtThemaincontentsofthisarticleconsistoffollowingpoints：InthepaperCTS／PVAblendswithdifferentcompositionarepreparedbymeansofsolutionblendingTheviscosityandrefractionindexofCTS／PVAsolutionweremeasuredbyrelativeviscositytod

6、iscussthecompatibilitybetweenCTSandPVA；thecompatibilityofCTS／PVAfilmwithdifferentcomponentofthepolymerblendswerestudiedbyInfraredSpectrum(IR)，DynamicMechanicalThermoAnalysis(DMTA)；andthecompatibilityofthepolymerblendswit

7、hdiversitymolecularweightofCTSalsowascharacterizedbyAtomsForceMicroscopy(AFM)TheresultshowedthattherelativeviscosityandrefractionindexofCTS／PVAhavegoodlinearrelationshipwitIlcomponentoftheblendingsolutionSoCTS／PVAhasgood