A new analyzing method of temperature modulated DSC of exo- or endo-thermic process: Application to polyethylene crystallization

被引：52

作者：

Toda, A ^{[1
]}

Oda, T ^{[1
]}

Hikosaka, M ^{[1
]}

Saruyama, Y ^{[1
]}

机构：

[1] KYOTO INST TECHNOL,FAC TEXT SCI,SAKYO KU,KYOTO 606,JAPAN

来源：

THERMOCHIMICA ACTA | 1997年 / 293卷 / 1-2期

关键词：

DSC; temperature modulated; transformation kinetics; polyethylene; crystallization;

D O I：

10.1016/S0040-6031(97)00051-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A new method is presented to analyse an exothermic or endothermic process with temperature modulated differential scanning calorimetry. The response of exo- or endo-thermic process against temperature modulation has been directly taken into account in an apparent heat capacity difference of complex quantity. Utilizing the shift in phase lag between sample temperature and heat flow, the specific heat during the transformation process and the temperature coefficient of the transformation rate, e.g. crystal growth rate, are obtainable by the analysis under a reasonable assumption. The applicability of the present method has been examined with the experimental results of polyethylene crystallization. (C) 1997 Elsevier Science B.V.

引用

页码：47 / 63

页数：17

共 16 条

[1] HEAT-CAPACITY MEASUREMENT BY MODULATED DSC AT CONSTANT-TEMPERATURE
BOLLER, A
JIN, Y
WUNDERLICH, B
[J]. JOURNAL OF THERMAL ANALYSIS, 1994, 42 (2-3): : 307 - 330
[2] HEAT-CAPACITY AND OTHER THERMODYNAMIC PROPERTIES OF LINEAR MACROMOLECULES .2. POLYETHYLENE
GAUR, U
WUNDERLICH, B
[J]. JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1981, 10 (01) : 119 - 152
[3] MODULATED DIFFERENTIAL SCANNING CALORIMETRY
GILL, PS
SAUERBRUNN, SR
READING, M
[J]. JOURNAL OF THERMAL ANALYSIS, 1993, 40 (03): : 931 - 939
[4] COMPATIBILITY OF DIFFERENTIAL SCANNING CALORIMETRY AND AC CALORIMETRY
HATTA, I
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1994, 33 (5A): : L686 - L688
[5] Kubo R., 1991, SPRINGER SERIES SOLI
[6] MATHEMATICAL TREATMENT OF HEAT-FLOW IN DIFFERENTIAL SCANNING CALORIMETRY AND DIFFERENTIAL THERMAL-ANALYSIS INSTRUMENTS
MRAW, SC
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1982, 53 (02) : 228 - 231
[7] Development of the light heating dynamic DSC
Nishikawa, M
Saruyama, Y
[J]. THERMOCHIMICA ACTA, 1995, 267 : 75 - 81
[8] A NEW APPROACH TO THE CALORIMETRIC INVESTIGATION OF PHYSICAL AND CHEMICAL-TRANSITIONS
READING, M
ELLIOTT, D
HILL, VL
[J]. JOURNAL OF THERMAL ANALYSIS, 1993, 40 (03): : 949 - 955
[9] MODULATED DIFFERENTIAL SCANNING CALORIMETRY
READING, M
LUGET, A
WILSON, R
[J]. THERMOCHIMICA ACTA, 1994, 238 : 295 - 307
[10] SARUYAMA Y, IN PRESS THERMOCHIM

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