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通过温度调制差示扫描量热法研究聚合物的结晶

Crystallization of Polymers Investigated by Temperature-Modulated DSC.

作者信息

Righetti Maria Cristina

机构信息

National Research Council of Italy-Institute for Chemical and Physical Processes (CNR-IPCF), Via Moruzzi 1, 56124 Pisa, Italy.

出版信息

Materials (Basel). 2017 Apr 24;10(4):442. doi: 10.3390/ma10040442.

DOI:10.3390/ma10040442
PMID:28772807
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5506965/
Abstract

The aim of this review is to summarize studies conducted by temperature-modulated differential scanning calorimetry (TMDSC) on polymer crystallization. This technique can provide several advantages for the analysis of polymers with respect to conventional differential scanning calorimetry. Crystallizations conducted by TMDSC in different experimental conditions are analysed and discussed, in order to illustrate the type of information that can be deduced. Isothermal and non-isothermal crystallizations upon heating and cooling are examined separately, together with the relevant mathematical treatments that allow the evolution of the crystalline, mobile amorphous and rigid amorphous fractions to be determined. The phenomena of 'reversing' and 'reversible' melting are explicated through the analysis of the thermal response of various semi-crystalline polymers to temperature modulation.

摘要

本综述的目的是总结通过温度调制差示扫描量热法（TMDSC）对聚合物结晶进行的研究。相对于传统的差示扫描量热法，该技术在聚合物分析方面具有若干优势。分析和讨论了在不同实验条件下通过TMDSC进行的结晶过程，以阐明可以推导得出的信息类型。分别研究了加热和冷却时的等温结晶和非等温结晶，以及可用于确定结晶、可移动非晶和刚性非晶部分演变的相关数学处理方法。通过分析各种半结晶聚合物对温度调制的热响应，阐述了“反转”和“可逆”熔化现象。

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