DOI: 10.1002/app.1969.070131017. Quantitative study of the annealing of poly(vinyl chloride) near the glass transition

Quantitative study of the annealing of poly(vinyl chloride) near the glass transition

10.1002/app.1969.070131017

Crossref journal-article

Wiley

Journal of Applied Polymer Science (311)

Abstract

AbstractPoly(vinyl chloride) displays a normal DSC of DTA curve for the glass transition when quenched from above its Tg. However if cooled slowly or annealed near the glass transition temperature, a peak appears on the DSC or DTA curve at the Tg. In this paper quantitative studies of the time and temperature effects on the production of this endothermal peak during the annealing of PVC homopolymer and an acetate copolymer are presented. The phenomenon conforms to the Williams, Landell, and Ferry equation for the relaxation of polymer chains, the rate of the peak formation becoming negligible at more than 50°C below Tg. The energy difference between the quenched and annealed forms is small. For a PVC homopolymer annealed 2 hr at 68°C, which is Tg −10°C, the difference is 0.25 cal/g. For a 13% acetate copolymer of PVC similarly annealed, the difference is 0.36 cal/g. The measured rates of the process give a calculated activation energy of 13–14 kcal/mole for PVC homopolymer and copolymer. This appearance of a peak on the Tg curve for a polymer when annealed near the glass temperature appears to be a general phenomenon.

Bibliography

Foltz, C. R., & McKinney, P. V. (1969). Quantitative study of the annealing of poly(vinyl chloride) near the glass transition. Journal of Applied Polymer Science, 13(10), 2235â2245. Portico.

Authors 2

Carl R. Foltz (first)
Paul V. McKinney (additional)

References 12 Referenced 44

10.1002/app.1965.070091014
10.1063/1.1713105
10.1002/app.1967.070110716
C. R.Foltz Masters Degree Thesis A New Differential Scanning Calorimeter Technique Utilizing a Quenched Polymer Reference Material in the Investigation of the Glass Transition of Poly(vinyl Chloride) Franklin and Marshall College Lancaster Penna. (A description of this procedure will appear in a forthcoming issue ofAnalytical Chemistry.)
10.1021/ac60213a019
10.1021/ac60213a020
10.1002/app.1960.070030706
R.Phillips R. L.Cox andC. A.Heiberger SPE Preprints 26th ANTEC Society of Plastics Engineers May 1968 p. 216.
{'key': 'e_1_2_1_10_2', 'volume-title': 'Physics of Plastics', 'author': 'Gordon M.', 'year': '1965'} / Physics of Plastics by Gordon M. (1965)
D. J.David Polymer Preprints Phoenix Meeting of the American Chemical Society 7 No. 1 262 (Sept. 1966).
{'key': 'e_1_2_1_12_2', 'first-page': '375', 'volume-title': 'Organic Analysis', 'author': 'Ke B.', 'year': '1960'} / Organic Analysis by Ke B. (1960)
J. J.Mauer Polymer Preprints 155th American Chemical Society National Meeting San Francisco 9 No. 1 (April 1968) p. 866.

Dates

Type	When
Created	22 years, 4 months ago (April 14, 2003, 4:07 p.m.)
Deposited	1 year, 9 months ago (Nov. 20, 2023, 5:39 p.m.)
Indexed	1 month ago (Aug. 2, 2025, 1:06 a.m.)
Issued	55 years, 11 months ago (Oct. 1, 1969)
Published	55 years, 11 months ago (Oct. 1, 1969)
Published Online	22 years, 5 months ago (March 9, 2003)
Published Print	55 years, 11 months ago (Oct. 1, 1969)

Funders 0

None

BibTeX

@article{Foltz_1969, title={Quantitative study of the annealing of poly(vinyl chloride) near the glass transition}, volume={13}, ISSN={1097-4628}, url={http://dx.doi.org/10.1002/app.1969.070131017}, DOI={10.1002/app.1969.070131017}, number={10}, journal={Journal of Applied Polymer Science}, publisher={Wiley}, author={Foltz, Carl R. and McKinney, Paul V.}, year={1969}, month=oct, pages={2235–2245} }

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