Direct formation of form I poly(1-butene) single crystals from melt crystallization in ultrathin films
Data(s) |
2002
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Resumo |
The morphologies and crystalline structures of melt-crystallized ultrathin isotactic poly(1-butene) films have been studied with transmission electron microscopy and electron diffraction. It is demonstrated that a bypass of form II crystallization can be achieved with an increase in its crystallization temperature. Electron microscopy observations show that melt-grown isotactic poly(1-butene) single crystals have a well-shaped hexagonal form, whereas form I crystals converted from form II display the morphologies of their tetragonal precursors. Electron diffraction results indicate that, instead of the twinned hexagonal pattern of the converted form I crystal, the directly formed form I single crystals exhibit an untwinned hexagonal pattern. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zhang B;Yang DC;Yan S.Direct formation of form I poly(1-butene) single crystals from melt crystallization in ultrathin films,JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2002,40(23):2641-2645 |
Palavras-Chave | #PHASE-TRANSFORMATION #POLYBUTENE-1 #POLYMORPHISM #LAMELLAE |
Tipo |
期刊论文 |