期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 113, 期 3, 页码 1231-1237出版社
SPRINGER
DOI: 10.1007/s10973-012-2914-1
关键词
Polymer crystals; Melting kinetics; Fast-scan DSC; Polypropylene
资金
- KAKENHI from the Ministry of Education, Culture, Sports, Science and Technology of Japan
- Grants-in-Aid for Scientific Research [23550245] Funding Source: KAKEN
Melting kinetics of it-polypropylene crystals has been examined over wide heating rates of 0.6 K min(-1)-10(4) K s(-1) using a standard DSC and a fast-scan DSC. With fast-scan DSC, we have an access to the melting of crystals obtained at low temperatures, which are susceptible to re-organization at the heating rates applicable with standard DSC. It is clearly discernible that the appearance and disappearance of multiple melting peaks are strongly influenced by the applied heating rates and dependent on the crystallization temperatures. By examining the heating rate dependence of superheating of melting, we have determined the melting points of as-grown crystals formed under wide crystallization temperatures.
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