吉林大学学报（理学版）
吉林大學學報（理學版）
길림대학학보（이학판）
JOURNAL OF JILIN UNIVERSITY(SCIENCE EDITION)
2014年
6期
1297-1300
,共4页
棒/线两嵌段共聚物%共混体系%自组装%自洽场方法
棒/線兩嵌段共聚物%共混體繫%自組裝%自洽場方法
봉/선량감단공취물%공혼체계%자조장%자흡장방법
rod/coil diblock copolymer%blends%self-assembly%self-consistent field theory
运用二维格子自洽场方法，研究棒/线两嵌段共聚物共混体系的自组装。结果表明：在长/短两种嵌段体积比相等的棒/线两嵌段共聚物共混体系中，当某种共聚物的混合比较大时，观察到层状结构，层的厚度与混合比大的嵌段共聚物长度有关；在两种嵌段共聚物混合比相差较小的条件下，出现了新的自组装结构，即柱层和层与柱共存相，这两种结构未出现在棒/线内嵌段共聚物熔体体系中，它们的出现与棒/线两嵌段共聚物链构象的不对称性及共混的影响有关。
運用二維格子自洽場方法，研究棒/線兩嵌段共聚物共混體繫的自組裝。結果錶明：在長/短兩種嵌段體積比相等的棒/線兩嵌段共聚物共混體繫中，噹某種共聚物的混閤比較大時，觀察到層狀結構，層的厚度與混閤比大的嵌段共聚物長度有關；在兩種嵌段共聚物混閤比相差較小的條件下，齣現瞭新的自組裝結構，即柱層和層與柱共存相，這兩種結構未齣現在棒/線內嵌段共聚物鎔體體繫中，它們的齣現與棒/線兩嵌段共聚物鏈構象的不對稱性及共混的影響有關。
운용이유격자자흡장방법，연구봉/선량감단공취물공혼체계적자조장。결과표명：재장/단량충감단체적비상등적봉/선량감단공취물공혼체계중，당모충공취물적혼합비교대시，관찰도층상결구，층적후도여혼합비대적감단공취물장도유관；재량충감단공취물혼합비상차교소적조건하，출현료신적자조장결구，즉주층화층여주공존상，저량충결구미출현재봉/선내감단공취물용체체계중，타문적출현여봉/선량감단공취물련구상적불대칭성급공혼적영향유관。
Based on the self-consistent field theory of lattice model in two dimension space,the self-assembly of the blends of diblock copolymers was studied.For the blends of long/small two diblock copolymers in which volume fraction of rod block equal that of coil block,when blend fraction of the two diblocks was not comparable,lamellae were observed,and their thickness was related with the length of the big blend fraction of the two diblock copolymers;on the other hand,as blend fraction of the two diblocks is comparable,the new ordered structures,including lamellar strips and coexisted lamellae and strips,were observed.These new ordered structures did not appear in the rod/coil diblock copolymer melts.The results are related to the asymmetry of the chain conformation and the blend of rod/coil diblock copolymer.
