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New observations on the formation of "row-nucleated" structures of isotactic polystyrene

文献类型:期刊论文

作者Gu, FM; Bu, HS; Zhang, Z
刊名Macromolecules
出版日期2000-07-25
卷号33期号:15页码:5490-5494
ISSN号0024-9297
通讯作者Gu, fm()
英文摘要A unique 60 degrees c endothermic peak was found in the differential scanning calorimetry (dsc) measurement of freeze-dried isotactic polystyrene (i-ps) prepared from a 0.01 wt % benzene solution. while i-ps was melted before preparing a solution at a temperature beyond the equilibrium melting point, nothing could be observed around 60 degrees c. the endotherm can be attributed to the melting of microgel crystals. morphology observation revealed that ribbonlike films of i-ps were formed when the solution was spread on a cold water surface. after isothermal crystallization of the films, "row-nucleated" crystals were grossly produced without any extensional deformation of molecular chains. it is suggested that microgel crystals may act as heterogeneous species to initiate the growth of "row-nucleated" crystals.
WOS关键词CONFORMATION ; GELS ; CRYSTALLIZATION ; HOMOGENEITY ; GELATION ; BEHAVIOR
WOS研究方向Polymer Science
WOS类目Polymer Science
语种英语
WOS记录号WOS:000088453000030
出版者AMER CHEMICAL SOC
URI标识http://www.irgrid.ac.cn/handle/1471x/2373876
专题物理研究所
通讯作者Gu, FM
作者单位1.Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
2.Chinese Acad Sci, Beijing Lab Electron Microscopy, Beijing 100080, Peoples R China
推荐引用方式
GB/T 7714
Gu, FM,Bu, HS,Zhang, Z. New observations on the formation of "row-nucleated" structures of isotactic polystyrene[J]. Macromolecules,2000,33(15):5490-5494.
APA Gu, FM,Bu, HS,&Zhang, Z.(2000).New observations on the formation of "row-nucleated" structures of isotactic polystyrene.Macromolecules,33(15),5490-5494.
MLA Gu, FM,et al."New observations on the formation of "row-nucleated" structures of isotactic polystyrene".Macromolecules 33.15(2000):5490-5494.

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来源:物理研究所

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