端羟基聚丁二烯的合成分析研究 高分子材料与工程管理专业VIP免费

目录摘要.............................................................Error:ReferencesourcenotfoundAbstract...........................................................Error:Referencesourcenotfound第一章前言.................................................Error:Referencesourcenotfound第二章实验部分..........................................Error:Referencesourcenotfound§2.1主要试剂及处理............................Error:Referencesourcenotfound§2.2主要表征及测试............................Error:Referencesourcenotfound§2.3端羟基聚丁二烯的合成................Error:Referencesourcenotfound§2.3.1在THF/环己烷中通过一锅反应制备ATPB..................Error:Referencesourcenotfound§2.3.2NaBH4还原ATPB制备HTPB..................Error:Referencesourcenotfound§2.3.3HTPB的表征......................Error:Referencesourcenotfound第三章结果与讨论......................................Error:Referencesourcenotfound§3.1顺丁橡胶的提纯............................Error:Referencesourcenotfound§3.2端羟基聚丁二烯的合成................Error:Referencesourcenotfound§3.3端羟基聚丁二烯的提纯................Error:Referencesourcenotfound§3.4端羟基聚丁二烯的核磁共振谱表征........................Error:Referencesourcenotfound§3.5端羟基聚丁二烯的傅里叶红外光谱表征................Error:Referencesourcenotfound§3.6端羟基聚丁二烯的表征..................................................................30第四章结论...............................................Error:Referencesourcenotfound参考文献.........................................................Error:Referencesourcenotfound致谢.............................................................Error:Referencesourcenotfound高顺式1，4-端羟基聚丁二烯的合成姚宇摘要：端羟基聚丁二烯是具有广泛应用的橡胶，目前较好的制备方法是通过以顺丁橡胶(BR9000)为起始原料的两步法制备了具有高顺式-1,4含量(>95.0％)的羟基封端的聚丁二烯(HTPB),包括高效率的一锅法合成端醛基聚丁二烯（ATPB）和其随后的还原反应。用3-氯过苯甲酸进行的环氧化反应和用高碘酸进行的链断裂反应可以做到可控的、高效的、定量的和有选择性的。本论文以顺丁橡胶(BR9000)为原料环己烷/四氢呋喃为溶剂,间氯过氧苯甲酸为环氧化剂,高氯酸为氧化剂,硼氢化钠为还原剂,制备两种不同分子量的HTPB(Mn=400,800),并用核磁共振谱,傅立叶红外光谱和渗透凝胶色谱测定HTPB序列结构及分子量,来探究序列结构和分子量对HTPB的影响。关键词：端羟基聚丁二烯，环氧化，裂解，分子量Abstract:Hydroxyl-terminatedpolybutadieneisarubberwithawiderangeofapplications.ThecurrentpreferredmethodofpreparationisthatHydroxyl-terminatedpolybutadiene(HTPB)withhighcis-1,4content(>95.0%)ispreparedviaatwo-stepmethodbytakingcommercialbutadienerubber(BR9000)asastartingmaterial,includingtheone-potsynthesisofaldehydegroup-terminatedpolybutadiene(ATPB)inhighefficiencyandthesubsequentreductionreaction.Theepoxidationreactionby3-chloroperbenzoicacidandchain-cleavagereactionbyperiodicacidarecontrollable,highlyefficient,selective,andquantitative.Inthisthesis,butadienerubber(BR9000)wasusedasrawmaterial;tetrahydrofuranwasusedassolvent;m-chloroperoxybenzoicacidwasuesdasepoxidizingagent;perchloricacidwasusedasoxidizingagent;andsodiumborohydridewasuesdasreducingagent.Twokindsofhydroxyl-terminatedpolybutadieneswithdifferentmolecularweights(Mn=400,800)wereprepared,andTheHTPBsequencestructureandmolecularweightweredeterminedbyNMR,Fouriertransforminfraredspectroscopyandpermeationgelchromatographytoinvestigatetheeffect...