采用末端功能化的聚(二甲基硅氧烷)大分子(Br-PDMS-Br)为引发剂,CuCl为催化荆,2,2'-联吡啶(bpy)为配体,通过原子转移自由基聚合(ATRP)法,合成出结构明确的多嵌段共聚物聚甲基丙烯酸丁酯-b-聚二甲基硅氧烷-b-聚甲基丙烯酸丁酯和聚苯乙烯-b-聚甲基丙烯酸丁酯-b-聚二甲基硅氧烷-b-聚甲基丙烯酸丁酯-b-聚苯乙烯.利用红外光谱(Fr-IR)、核磁共振(<'1>H-NMR)、凝胶渗透色谱(GPC)、原子力显微镜(AFM)和热重分析(TG)方法对其结构、热稳定性及相形态进行研究,结果表明,成功合成了多嵌段共聚物,其分子量可控,分子量分布窄(PDI=1.18~1.46),且在微观相上形成有序纳米结构,粒径大小60 nm~100 nm,具有良好的热稳定性,低分解温度达360℃,高分解温度达550℃.
参考文献
[1] | Nathaniel A.Lynd;Adam J.Meuler;Marc A.Hillmyer .Polydispersity and block copolymer self-assembly[J].Progress in Polymer Science,2008(9):875-893. |
[2] | Olsen BD;Segalman RA .Self-assembly of rod-coil block copolymers[J].Materials Science & Engineering, R. Reports: A Review Journal,2008(2):37-66. |
[3] | Krzysztof Matyjaszewski;Jianhui Xia .Atom Transfer Radical Polymerization[J].Chemical Reviews,2001(9):2921-2990. |
[4] | E. A. Eastwood;M. D. Dadmun .A Method To Synthesize Multiblock Copolymers of Methyl Methacrylate and Styrene Regardless of Monomer Sequence[J].Macromolecules,2001(4):740-747. |
[5] | Peng H.;Cheng SY.;Fan ZQ. .Synthesis and characterization of PBMA-b-PDMS-b-PBMA copolymers by atom transfer radical polymerization[J].Journal of Applied Polymer Science,2004(1):532-538. |
[6] | Zhiyuan Zhu;Steven P.Armes;Shiyong Liu .pH-Induced Micellization Kinetics of ABC Triblock Copolymers Measured by Stopped-Flow Light Scattering[J].Macromolecules,2005(23):9803-9812. |
[7] | Giacomelli C;Schmidt V;Borsali R .Nanocontainers formed by self-assembly of poly(ethylene oxide)-b-poly(glycerol monomethacrylate) - Drug conjugates[J].Macromolecules,2007(6):2148-2157. |
[8] | Michael J Fasolka;Anne M Mayes .Block Copolymer Thin Films: Physics and Applications[J].Annual review of materials research,2001(0):323-355. |
[9] | Zhang LF;Eisenberg A .MULTIPLE MORPHOLOGIES AND CHARACTERISTICS OF CREW-CUT MICELLE-LIKE AGGREGATES OF POLYSTYRENE-B-POLY(ACRYLIC ACID) DIBLOCK COPOLYMERS IN AQUEOUS SOLUTIONS[J].Journal of the American Chemical Society,1996(13):3168-3181. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%