论文资料-三嵌段共聚物论文：多重刺激响应性嵌段共聚物的制备及性能研究（word）可编辑

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2、袁莁蒄薈膀莀薆袃肆荿蚈蚆羂荿莈袂袈莈蒀蚄膆蒇薃袀肂蒆蚅蚃羈蒅莅袈羄肂薇螁袀肁虿羇腿肀荿蝿肅聿蒁羅羁肈薄螈袇膇蚆薀膅膇莆螆肁膆蒈蕿肇膅蚀袄羃膄莀蚇衿膃蒂袂膈膂薄蚅肄膁蚇袁羀芁莆蚄袆芀葿衿螂艿薁蚂膁芈莁羇肇芇蒃螀羃芆薅羆衿芅蚈螈膇芅莇薁肃莄蒀螇罿莃薂薀袅莂芁螅袁莁蒄薈膀莀薆袃肆荿蚈蚆羂荿莈袂袈莈蒀蚄膆蒇薃袀肂蒆蚅蚃羈蒅莅袈羄肂薇螁袀肁虿羇腿肀荿蝿肅聿蒁羅羁肈薄螈袇膇蚆薀膅膇莆螆肁膆蒈蕿肇膅蚀袄羃膄莀蚇衿膃蒂袂膈膂薄蚅肄膁蚇袁羀芁莆蚄袆芀葿衿螂艿薁蚂膁三嵌段共聚物论文：多重刺激响应性嵌段共聚物的制备及性能研究【中文摘要】本文利用原子转移自由基聚合(

3、ATRP)和点击化学(clickchemistry)相结合的方法,制备一种结构明确、分子量分布较窄(PDI<1.3)的ABC型三嵌段共聚物PNIPAM-b-PtBMA-b-PMMAZO,通过选择性水解将PtBMA嵌段中的大部分甲基丙烯酸叔丁酯单元转化为甲基丙烯酸,得到水溶性三嵌段共聚物PNIPAM-b-PMAA-b-PMMAZO.利用FT-IR、1H-NMR、GPC、UV-Vis等分析测试方法对合成产物进行了结构确认及性质表征。结果表明：水解后的三嵌段共聚物,其水溶液对温度、pH、光具有三重响应性。聚合物溶液的临界相转变温度(LCST)约为4

4、3℃在pH=5-6范围内发生相变；经紫外光(λ=365nm)照射后,溶液的紫外可见光谱图在360nm和460nm处发生明显的吸收变化。【英文摘要】ThestrategyforsynthesisofABCtypetriblockcopolymersviaacombinationof“clickchemistry”andatomtransferradicalpolymerization(ATRP)wasused,andarangeofwell-definedandrelativelylowpolydispersity(PDI<1.3)macrom

5、onomers:Poly(N-isopropylacryl-amide)-block-poly(tert-butylmethacrylate)-block-poly[6-(4-methoxy-4’-oxy-azobenzene)-hexylmethacrylate](PNIPAM-PtBMA-PMMAZO)weresuccessfullypreparedbythismethod.ThroughselectivehydrolysisofPtBMAyieldingpoly(methacrylicacid)(PMAA),water-solution

6、triblockcopolymersofPNIPAM-b-PMAA-b-PMMAZOwereobtained.TheobtainedpolymerswerecharacterizedbyFT-IR,1HNMR,GPCandUV-Vismeasurements.Asaresult,PNIPAM-b-PMAA-b-PMMAZOaresolutioninaqueoussolutionandshowaresponsivebehaviortotemperature(LCST),pHandUVlightillumination.TheLCSTofPNIP

7、AM-b-PMAA-b-PMMAZOaqueoussolutionwasabout43℃,pH=5-6intherangeofthephasetransition;byUVlight(λ=365nm)irradiation,UV-visiblespectraofthesolutioninthe360nmand460nmatobviousabsorptionchange.【关键词】三嵌段共聚物原子转移自由基聚合(ATRP)点击化学刺激反应聚合物选择性水解【英文关键词】triblockcopolymeratomtransferradicalpol

8、ymerization(ATRP)clickchemistrystimuli-responsivepolymerselectivehydrolysis【目录】多重刺