10227.氫鍵作用對脂肪族聚酯結(jié)晶行為的影響

1、獨(dú)創(chuàng)性聲明本人聲明所呈交的論文是我個人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。盡我所知，除了文中特別加以標(biāo)注和致謝的地方外，論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包含為獲得寧夏大學(xué)或其它教育機(jī)構(gòu)的學(xué)位或證書而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻(xiàn)均已在論文中作了明確的說明并表示了謝意。研究生簽名：司積色時間：二護(hù)7／年歲月二7日關(guān)于論文使用授權(quán)的說明本人完全了解寧夏大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定，即：學(xué)

2、校有權(quán)保留送交論文的復(fù)印件和磁盤，允許論文被查閱和借閱，可以采用影印、縮印或掃描等復(fù)制手段保存、匯編學(xué)位論文。同意寧夏大學(xué)可以用不同方式在不同媒體上發(fā)表、傳播學(xué)位論文的全部或部分內(nèi)容。(保密的學(xué)位論文在解密后應(yīng)遵守此協(xié)議)研究生簽名：司觚龜一：弘刻i時間：上DJg年上月≥f日時間：多礦，多年芻月夠日AbstractThecrystallizationbehaviorandcrystallinestructureofPBSA／PDPsup

3、ramolecularcomplexformedbyselfassemblingviahydrogenbondingwereinvestigatedAnalysescombinedFT取and”CNMRconfirmedtheformationofintermolecularhydrogcnbondingbetweenhydroxylgroupofPDPandcarbonylgroupofPBSA，whichlinkedPDPtoPBS

4、AassidechainTheresultsbyDSCindicatedf1]attheformationofhydrogenbondingledtoretardedcrystallizationofPBSAandreducedlamellarthicknessConfinedcrystallizationandmeltingofalkylchainsinPDPmoleculeoccurredduringcoolingandheatin

5、gDSCscans，accompaniedwithheatabsmptionorreleaseThemeltingpointandcrystallizationtemperaturesincreasedwithPDPcontent，whichwasinterpretedasincreasingalkylchainlengthinvolvedinconfinedcrystallizationThecrystallinestructureo

6、falkylchainsinPDPmoleculewereidentifiedusingWAXDasorthogonalphase∽。)TGanalysissuggestedthatthethermalstabilityofcomplexesdecreasedwithPDPincorporationItcanbeinferredfromtheaboveresultsthatPBSA／PDPcomplexescallpotentially

7、serveasphasechangematerialTheeffectsofhydrogenbondingoncrystallizationbehaviorclystalstructureandcrystalmorphologyofPBSAJTDPcomplexesweresystematicallyinvestigatedTheformationofhydrogenbondingbetweencarbonylgroupofPBSAan

8、dhydroxylgroupofTDPwasverifiedFTIRanalysesThefractionofhydrogenbondedcarbonylgroupsinPBSAincreasedwithTDPadditionNon—isothermalcrystallizationandmeltingpeaktemperatureofPBSAdecreased，whiletl／2derivedfromisothermalcrystal

9、lizationanalysesincreasedwithTDPaddition，implyingthatcrystallizationofPBSAwasimpededbyTDPadditionPBSAcrystallitesassumedatwodimensionaltothreedimensionalgrowthwithacombinationofhomogeneousandheterogeneousnucleation，Analy

10、sisbasedonLauritzen—Hoffmantheoryindicatedthatthefoldsurfacefreeenergy(％)andworkofchainfolding(g)ofPBSAchainincreasedwithTDPadditionPOMobservationexhibitedconcentricring—bandedspherulitesforsampleswith10and20Wt％TDPApecul

11、iarringbandedpatternwithdiscrepantbandspacingwasobtainedforthefirsttimebyadditionof30wrYTDPwhoseformationmechanismremainstobediscussedTheeffectsofhydrogenbondingbetweenPLLAandTDPoncrystallizationbehaviorcrystalstructurea

12、ndlamellarorganizationofPLLAwerestudiedTheresultssuggestthatTDPwaslinkedviaintermolecularhydrogenbondingandexistedinamorphousstateinPLLAmatrixwhichdecreasedthemobilityofcrystallizationofPLLAchainsandresultedinreduced瓦，cr

13、ystallizationandmeltingtemperatureTheisothermalcrystallizationofPLLA／TDPcomlexesassumedthreedimensionalcrystalgrowthwithheterogeneousnucleation，whilecrystallizationratedecreasedbyTDPadditionAnalysisbasedonLaurizten—Hoffm

14、antheoryindicatedthatthevaluesof仉and孽increasedwithTDPadditionThelongperiodofPLLAwasincreasedbyTDPincmorationasevidencedbySAXSanalysis，meaningnloreamorphouscomponentexistingbetweenadjacentlamellaeAmorphousPVPhwasintroduce