ABCBA五嵌段線性共聚物自組裝的自洽平均場(chǎng)模擬.pdf

1、學(xué)校代碼：三Q壘鯉分類(lèi)號(hào)：唑⑧Y888365研究生學(xué)號(hào)：密級(jí)：東牡啼冠大雪碩士學(xué)位論文1221203007玉ABCBA五曲嫩線性翻黽聚物自鯉滾的自洽平均場(chǎng)Theself二consistentmeanfieldtheoreticsimulationfbrtheself_assemblyofABCBAlinearpentablockcopolymer作者：李偉指導(dǎo)教師：姜偉教授學(xué)科專(zhuān)業(yè)：理論物理研究方向：非線性系統(tǒng)復(fù)雜性的研究學(xué)位類(lèi)型：學(xué)歷

2、碩士東北師范大學(xué)學(xué)位評(píng)定委員會(huì)2006年6月AbstractComparingtomeothermeanneldtheory，fbwerhypomeseshavebeenusedinself_consistentfleldmeory(SCFT)Therefore，SCFThasbecomeanefrectivememodforthestudyoftheselfassemblyofpolym盯s1鈦ingABd沌lockcopolym釘8

3、saneX鋤ple，Wesystemicallyintnldedt11ederivationofSCFTequationsbaseduponastandardGaussianchainint|1isthesisWealsoin圩o(hù)ducedthenumericaltechniqueforsolvingmeseequationsintherealspacea11dexar]ninedmeinnuenceofsomeparameterson

4、thephasemorphologyoftheABdiblockcopolymerInordertoVeri匆oursimulationpro釅啪，wesimulated也ephasemoIphologyofABC仃iblockcopoIymersintwodimensionsbyrealspaceSCFT，a11dobtained協(xié)ef0110wingmorphologies：l鋤ellae，l鋤ellaewithbeadslocat

5、edat也einterl’ace，lamelIaewitllbeadsinsde，hexagonallattice，te衄gonal1attice，coreshellhexagonallattice，core—shelltetragonallanice，twointerpen附atingtetragonal1amce，twointerpene訂atinghexagonallamce，hexagonalphasewimbeadsatmei

6、n把rface，tetragonalphase慚mbeadsattheimerfaceSomeofthemarecorrespondingtotllesimulationresul招inthreedimensionsTheresearch證mis也esisisfocusedonthephasebehaviorofABCBApent曲locklinearcopolymersin批odimensionSbyuSingSCFT，a11dobt

7、ained吐玲foHowingresults：1Themreecomponemtrian甜ephaSedia鏟amcoveringt11elargerangeofmoIeculepar鋤eterswasmadebychallgingt11ecompositionsoftlletllreecomponentssystematically7rheyshouldbeusefulforexperimentertodesignnewselfass

8、emblynanOstructLlresthrou窟h(yuǎn)choosin窖thesuita_bleblockcopolymers2Whentlleinteractionenergiesareequalbetweenthetllreespecies，thecopolymercoInpositionisakeypar鋤eterthati11fluencesthemoIph0109yductot11eequaJbinaryintemctionsb

9、et、veeneachblockIngeneral，whentllevolumefhctionsarecomparable，larneIlarphasescanbefounddueto也et11ennalstabilityW撕leifoneofmev01umefhctionss1arge，hexagonallatticeph髂es，orcoreshellhexagonaIphaSescanbefornledMoreovcr，lamell

10、ae麗mbeadsi11sidecallbefjluldbyincreasingZⅣ3MorecomplexmOrphologies，suchasl鋤ellae、vimbeadslocatedattheinterface，interpcne虹atir塔beltphasesareobtainedwhentheinteractionenergiesbetweendistinctblocksbecomeasymme懈cInadditio瑪th