Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 64: Issue 2
DSC Studies on Polytetrahydrofurans with Various Molecular Masses, Their Blends and Their Cured Samples
Authors:
W. Miyano National Defense Academy Department of Chemistry 1-10-20 Hashirimizu Yokosuka 239-8686 Japan 1-10-20 Hashirimizu Yokosuka 239-8686 Japan

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E. Inoue National Defense Academy Department of Chemistry 1-10-20 Hashirimizu Yokosuka 239-8686 Japan 1-10-20 Hashirimizu Yokosuka 239-8686 Japan

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M. Tsuchiya National Defense Academy Department of Chemistry 1-10-20 Hashirimizu Yokosuka 239-8686 Japan 1-10-20 Hashirimizu Yokosuka 239-8686 Japan

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K. Ishimaru National Defense Academy Department of Chemistry 1-10-20 Hashirimizu Yokosuka 239-8686 Japan 1-10-20 Hashirimizu Yokosuka 239-8686 Japan

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T. Kojima National Defense Academy Department of Chemistry 1-10-20 Hashirimizu Yokosuka 239-8686 Japan 1-10-20 Hashirimizu Yokosuka 239-8686 Japan

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Pages:
459–465
Online Publication Date:
02 Nov 2004
Publication Date:
01 May 2001
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1011553826342
Keywords:
blends; DSC; melting temperature; molecular mass; polytetrahydrofuran
Restricted access

Abstract  

DSC studies are given for polytetrahydrofurans with molecular masses equal to 650, 1400, and 2900, for their blends, and for their cured samples. The samples were stored, annealed, and quenched to obtain the samples with different thermal histories. Two or more endothermic peaks appear in the DSC curves for the stored samples, even for the non-blended samples. A hyperbolic curve forced the plot of the highest melting temperature vs. the molecular mass to asymptote to about 50C. The relationship between the highest melting temperature and the composition for the blended samples is suitable to linear or Fox’s relation. A peak and a shoulder appear in the DSC curves of the cured samples. As the samples are cooled at the faster rates in the thermal treatment, the shoulder appears at the lower temperatures.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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