Growth rates of different polymorphs from interspherulitic boundary profiles
文献类型：期刊论文
| 作者 | Alfonso GC ; Moretti P ; Pallenzona P ; Yin JH |
| 刊名 | optical engineering
 |
| 出版日期 | 1995 |
| 卷号 | 34期号:12页码:3385-3392 |
| 关键词 | ISOTACTIC POLYPROPYLENE SPHERULITIC GROWTH MORPHOLOGY POLYPIVALOLACTONE CRYSTALLIZATION POLY(PIVALOLACTONE) TEMPERATURE NUCLEATION KINETICS SHAPE |
| ISSN号 | 0091-3286 |
| 通讯作者 | alfonso gc |
| 中文摘要 | quantitative data on the crystallization kinetics of polymorphic polymers can be derived from the investigation of gross spherulitic morphology formed in isothermal conditions. depending on distance between centers, and the time lag between their formation and relative growth rates, various types of boundary lines can be generated by the impinging of two spherical bodies whose radii increase linearly with time, in polymorphic polymers, different types of spherulites often develop simultaneously at different rates from sporadic or predetermined nuclei. in same cases, the so-called growth transformation, in which a nucleus of the fast growing specie is formed at the tip of an advancing lamella of the slower crystal form, provides an alternative mode of nucleation, it is shown that if only one event of growth transformation takes place at the front of a slow growing body, the fast growing spherulite swallows the parent one and the resultant shape of interspherulitic boundary is described by two symmetrical logarithmic spirals whose parameters can be extracted from micrographs taken at the end of crystallization. these concepts are applied to determine the radial growth rate of gamma form spherulites of polypivalolactone in a wide range of temperatures through analysis of the alpha/gamma interspherulitic profiles formed in isothermal conditions and direct measurement of the growth rate of the alpha counterparts at the same temperature. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| 公开日期 | 2010-12-30 ; 2011-06-10 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/26363]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Alfonso GC,Moretti P,Pallenzona P,et al. Growth rates of different polymorphs from interspherulitic boundary profiles[J]. optical engineering,1995,34(12):3385-3392. |
| APA | Alfonso GC,Moretti P,Pallenzona P,&Yin JH.(1995).Growth rates of different polymorphs from interspherulitic boundary profiles.optical engineering,34(12),3385-3392. |
| MLA | Alfonso GC,et al."Growth rates of different polymorphs from interspherulitic boundary profiles".optical engineering 34.12(1995):3385-3392. |
入库方式： OAI收割
来源：长春应用化学研究所
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