Ultimate Elastic Modulus and Melting Behavior of Poly(oxymethylene)

J. Runt; R. F. Wagner; M. Zimmer

doi:10.1021/ma00176a036

Ultimate Elastic Modulus and Melting Behavior of Poly(oxymethylene)

J. Runt, R. F. Wagner, M. Zimmer

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Abstract

: The ultimate crystalline modulus of poly(oxymethylene) was estimated by using the Raman longitudinal acoustic mode and small-angle X-ray scattering. In this paper we emphasize the sensitivity of the calculated modulus to the values chosen for the thickness of the crystalline regions. Assuming that the uniform elastic rod model provides an adequate description of the LAM, we found E_c= 146 GPa, in excellent agreement with the results of neutron-scattering experiments. We have also explored the melting behavior of the solution-crystallized materials used in this study. The estimated value of the fold surface free energy (=88 ergs/cm²) indicates a work of chain folding near 4 kcal/mol folds, a value in line with that found for other polyethers.

Original language	English (US)
Pages (from-to)	2531-2535
Number of pages	5
Journal	Macromolecules
Volume	20
Issue number	10
DOIs	https://doi.org/10.1021/ma00176a036
State	Published - Oct 1 1987

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Ultimate Elastic Modulus and Melting Behavior of Poly(oxymethylene)",

abstract = ": The ultimate crystalline modulus of poly(oxymethylene) was estimated by using the Raman longitudinal acoustic mode and small-angle X-ray scattering. In this paper we emphasize the sensitivity of the calculated modulus to the values chosen for the thickness of the crystalline regions. Assuming that the uniform elastic rod model provides an adequate description of the LAM, we found Ec= 146 GPa, in excellent agreement with the results of neutron-scattering experiments. We have also explored the melting behavior of the solution-crystallized materials used in this study. The estimated value of the fold surface free energy (=88 ergs/cm2) indicates a work of chain folding near 4 kcal/mol folds, a value in line with that found for other polyethers.",

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year = "1987",

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T1 - Ultimate Elastic Modulus and Melting Behavior of Poly(oxymethylene)

AU - Runt, J.

AU - Wagner, R. F.

AU - Zimmer, M.

PY - 1987/10/1

Y1 - 1987/10/1

N2 - : The ultimate crystalline modulus of poly(oxymethylene) was estimated by using the Raman longitudinal acoustic mode and small-angle X-ray scattering. In this paper we emphasize the sensitivity of the calculated modulus to the values chosen for the thickness of the crystalline regions. Assuming that the uniform elastic rod model provides an adequate description of the LAM, we found Ec= 146 GPa, in excellent agreement with the results of neutron-scattering experiments. We have also explored the melting behavior of the solution-crystallized materials used in this study. The estimated value of the fold surface free energy (=88 ergs/cm2) indicates a work of chain folding near 4 kcal/mol folds, a value in line with that found for other polyethers.

AB - : The ultimate crystalline modulus of poly(oxymethylene) was estimated by using the Raman longitudinal acoustic mode and small-angle X-ray scattering. In this paper we emphasize the sensitivity of the calculated modulus to the values chosen for the thickness of the crystalline regions. Assuming that the uniform elastic rod model provides an adequate description of the LAM, we found Ec= 146 GPa, in excellent agreement with the results of neutron-scattering experiments. We have also explored the melting behavior of the solution-crystallized materials used in this study. The estimated value of the fold surface free energy (=88 ergs/cm2) indicates a work of chain folding near 4 kcal/mol folds, a value in line with that found for other polyethers.

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Ultimate Elastic Modulus and Melting Behavior of Poly(oxymethylene)

Abstract

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