差示扫描量热法及其发展趋势.pdf

第7卷第11期
食品安全质量检测学报
Vol. 7 No. 11
2016年11月
ournal of Food Safcty and Qualily
Nov.2(016
差示扫描量热法及其发展趋势
池海涛!,刘伟丽,高峡,,周明强,2,赵婷
(1.北京市理化分析测试中心,有机材料检測技术与质量评价北京市重点实验室,北京100089
2.北京市科学技术研究院分析测试技术重点实验室,北京10008)
摘要:差示扫描量热仪可以测定多种热力学和动力学参数,如比热容、反应热、转变热、相图、反应速率、
结晶速率、高聚物结晶度及样品纯度等。该仪器具有使用温度范围宽(-175-500℃)分辦率高和试样用量少的
优点。本文论述了差示扫描量热仪的特点、目前我国与差示扫描量热法相关的标准以及方法的未来发展趋势
未来在聚合物的结晶性研究和相变材料的热焓变化测量方面,差示扫描量热法( differential scanning calorimetry
DSC)会有更广泛的应用。在物质的鉴别方面,熔点的精确测量也会起到很重要的辅助作用。未来期待温度范
围更宽的ISC仪器的出现,同时,红外-气相-差式扫描联用技术及热重-差式扫描量热联用仪器的更进一步发
展会使得联用技术在未来得到更多的重视。
关键词:差示扫描量热法;熔融:结晶;焓值
Differential scanning calorimetry and its development trend
CHI Hai-tao, LIU Wci-li,GAO Xia ZHOU Ming-qiang 2,ZHAO Ting
1. Beiiing Centre for Physical and Chemical Analysis, Beijing Key Laboratory of Organic Materials esting
lechnology c Quality #valuation, Beiiing 100089, hin; 2. Beijing Academy of Science and echnolog
Key Laboratory of Analysis and Testing lechnology, Beijing 100089, China)
ABSTRACT: Dillcrential scanning calorimeter can determine various thermodynamic and kinetic parameters, sucl
as specific heat, heat of reaction, heat of transformation, phase diagram reaction rate, crystallization rate, crystallinity
of polymers, and sample purity, etc. The instrument has the advantages of wide temperature range(-175--500 C)
high resolulion, and small amount of sample. This paper discussed the charactcristics of differential scanning
calorimeter, related standards in China, and the future trend of this method. The differential scanning calorimetry
OS)will be more widely used in the study of the crystalline properties of polymers and the measurement of the
thcrmal enthalpy of phase change malcrials in the future. In the idcntilicalion OI substances, thc precise measurement
of melting point will also play a very important auxiliary role. The emergence of DSC instruments with a wider range
of temperatures in the future is expected. At the same time, the development of infrared spectroscopy-gas
chromatography -differential scanning calorimetry (IR-GC-DSC)and thermo ravimetric analysis-differential
scanning calorimctry(/-[)SC)will make the combined techniques Lo get more allcntion in the future.
KEY WORDS: differential scanning calorimetry; melting: crystallization; enthalpy
基金项目:北京市科学技术研究院创新工程-1(2015-178305)、北京市科学技术研究院青年骨干计划(201526)
Fund Supported by the Innovativ Tro ram -1(2015-178305) and Young Backbonc roject(201526) of Bcijing Academy of Scicncc and
chn
通讯作者:周明强,助理研究员,主要研究方向为药物材料分析。T-mail:11-aaaddd(a163.com
Corresponding author: ZHOU Ming-iang. Rcscarch Assistant, Bciiin Centre for Physical and Chcmical Analysis, Bcijing 100089, ina
H-mail: 111-aaaddd(a163. com
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