Preparation and Characterization of Anisotropic Submicron Particles From Semicrystalline Polymers

被引：25
作者：
Staff, Roland H. [1 ]
Lieberwirth, Ingo [1 ]
Landfester, Katharina [1 ]
Crespy, Daniel [1 ]
机构：
[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2012年 / 213卷 / 03期
关键词：
anisotropic; crystallization; isotactic polystyrene; nanoparticles; syndiotactic polystyrene; CRYSTALLIZED SYNDIOTACTIC POLYSTYRENE; RIGID AMORPHOUS FRACTION; SOLUTION-GROWN CRYSTALS; ISOTACTIC POLYSTYRENE; MINIEMULSION DROPLETS; HEAT-CAPACITY; NANOPARTICLES; KINETICS; POLYMERIZATION; NUCLEATION;
D O I：
10.1002/macp.201100529
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The synthesis of colloidally stable submicron particles of syndiotactic polystyrene (sPS) and isotactic polystyrene (iPS) is reported. Model particles based on poly-L-lactic acid (PLLA), atactic polystyrene (aPS), sPS, and iPS are prepared by the evaporation of a solvent present in miniemulsion droplets. The degree of crystallinity of the particles is found to decrease with their size, as shown by DSC and WAXS measurements. Remarkably, nonspherical particles can be formed in the dispersed state with sPS and iPS, whereas PLLA and aPS particles always display spherical morphologies.
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页码：351 / 358
页数：8
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