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
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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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