壳聚糖改性水滑石复合质子交换膜的制备及性能 材料学专业VIP免费

I壳聚糖/改性水滑石复合质子交换膜的制备及性能摘要：这里用来制备改性水滑石(Q-LDH)的方法是季铵化改性，在壳聚糖（CS）基体中混合剂量不一的改性水滑石制成了不同含量Q-LDH的CS/改性水滑石复合质子交换膜。采用IR和TG分析改性水滑石的结构以及组成。对复合膜的断面形态，通过SEM来观测，同时采取措施测试出了复合膜的各种性质，比方说质子传导率、尺寸稳定性等等。测试完成后发现，在各项性能指标中，最为优越的一种指标是热稳定性。在加入改性水滑石以后，得到了显著提高的性能指标有质子传导率还有其力学性能，其他的性能指标没有变化。关键词：壳聚糖；改性水滑石；质子交换膜IIPreparationandpropertiesofchitosan/modifiedhydrotalcitecompositeprotonexchangemembraneAbstract:Themethodofpreparingmodifiedhydrotalcite(Q-LDH)isquaternaryammoniummodification.CS/modifiedhydrotalcitecompositeprotonexchangemembraneswithdifferentcontentofQ-LDHwerepreparedbymixingdifferentdosesofModifiedHydrotalciteinchitosan(CS)matrix.ThestructureandcompositionoftheModifiedHydrotalcitewereanalyzedbyIRandTG.Thecross-sectionalmorphologyofthecompositefilmwasobservedbySEM.Meanwhile,variouspropertiesofthecompositefilm,suchasprotonconductivity,dimensionalstabilityandsoon,weretested.Aftertesting,itisfoundthatthermalstabilityisoneofthemostsuperiorperformanceindicators.Afteraddingthemodifiedhydrotalcite,thepropertiesoftheModifiedHydrotalcitehavebeensignificantlyimproved,includingprotonconductivityandmechanicalproperties,whiletheotherpropertieshavenotchanged..Keyword：Chitosan;modifiedhydrotalcite;protonexchangemembraneIII目录摘要...................................................................................................................................................I关键词...............................................................................................................................................IAbstract.............................................................................................................................................IIKeyword...........................................................................................................................................II1.前言...............................................................................................................................................11.1壳聚糖的简介与应用.............................................................................................................11.2壳聚糖在质子交换膜的研究进展.........................................................................................21.3水滑石简介............................................................................................................................51.4本次实验的目的以及意义.....................................................................................................62.实验部分.......................................................................................................................................72.1实验原料................................................................................................................................72.2实验设备................................................................................................................................72.3样品制备................................................................................................................................82.4表征.......................