Zhu Peng-Wei, Phillips Andy, Edward Graham, Nichols Lance
Cooperative Research Center for Polymers, Department of Materials Engineering, Monash University, Victoria 3800, Australia.
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Nov;80(5 Pt 1):051801. doi: 10.1103/PhysRevE.80.051801. Epub 2009 Nov 3.
The effects of two seeds on the melt crystallization of isotactic polypropylene were experimentally investigated. The seed, which has the flat surface full of a nonuniform size distribution, has provided a right surface pattern to activate effectively the heterogeneous nucleation. In contrast, the seed, which has the curved surface full of a uniform size distribution, has failed to induce the heterogeneous nucleation. The results from the present work have also shown that the seed with strong nucleating ability leads to the formation of large crystals but the seed without nucleating ability does not influence much the crystal size.
实验研究了两种晶种对全同立构聚丙烯熔融结晶的影响。具有表面平整但尺寸分布不均匀的晶种，提供了合适的表面形态以有效激活异相成核。相比之下，具有表面弯曲且尺寸分布均匀的晶种未能引发异相成核。目前这项工作的结果还表明，具有强成核能力的晶种会导致形成大晶体，而没有成核能力的晶种对晶体尺寸影响不大。
