Cylindrical micelles from the self-assembly of polyacrylonitrile-based diblock copolymers in nonpolar selective solvents

被引：87
作者：
Lazzari, Massimo [1 ,2 ]
Scalarone, Dominique [3 ,4 ]
Vazquez-Vazquez, Carlos [1 ,2 ]
Lopez-Quintela, M. Arturo [1 ,2 ]
机构：
[1] Univ Santiago de Compostela, Dept Phys Chem, Fac Chem, E-15782 Santiago De Compostela, Spain
[2] Univ Santiago de Compostela, Inst Technol Invest, E-15782 Santiago De Compostela, Spain
[3] Univ Turin, Dept Chem IPM, I-10125 Turin, Italy
[4] Univ Turin, Nanostructured Interfaces & Surfaces Ctr Excellen, I-10125 Turin, Italy
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2008年 / 29卷 / 04期
关键词：
block copolymers; corona; crystallinity; cylindrical micelles; PAN-b-PS; PAN-b-PMMA; PFS BLOCK-COPOLYMER; DILUTE-SOLUTION; MORPHOLOGIES; FABRICATION; TOOL;
D O I：
10.1002/marc.200700818
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of polyacrylonitrile-block-polystyrene (PAN-b-PS) and polyacrylonitrile-block-poly(methyl methacrylate) (PAN-b-PMMA) diblock copolymers with PAN volume fraction up to 20% self-assembles in nonpolar selective solvents to form cylindrical micelles with a PAN core, having contour length varying between less than 1 mu m and tens of micrometers. Micelle characterization by differential light scattering, nuclear magnetic resonance, transmission electron microscopy, atomic force microscopy and differential scanning calorimetry enabled to point out the role played by crystallinity during micellization, thence suggesting that the core crystallization force overcomes other factors governing self-assembling processes.
引用
收藏
页码：352 / 357
页数：6
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