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Melting behaviour of low molecular weight poly (ethylene-oxide) fractions
Abstract
Two available theories of melting in extended chain polymer crystals are critically examined and compared with calorimetric data. Melting points, T m , and enthalpy of fusion, ΔH, have been measured for extended-chain crystals of poly(ethylene-oxide) fractions, covering a wide range of molecular weights. It appears that the theory of Flory and Vrij is the most appropriate to describe the present results and literature data. Application of this theory to experiments yields T m (∞) = (68.9 ± 0.4) °C and suggests that the value of the surface free energy, σ e , lies within 0.34 and 0.81 Kcal/mole, its enthalpic part (ΔH e /2) being (4.18 ± 0.22) Kcal/mole. Such a low value of σ e may be attributed to hydrogen bonding of OH end-groups located in the disordered surface layer of closely stacked crystalline lamellae.
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Cited by
Koch, F. P. V., Rivnay, J., Foster, S., Müller, C., Downing, J. M., Buchaca-Domingo, E., Westacott, P., Yu, L., Yuan, M., Baklar, M., et al. (2013) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2013.07.009 · Cited by 337
Marand, H., Xu, J., & Srinivas, S. (1998) · Macromolecules · doi:10.1021/ma980747y · Cited by 302
Sun, L., Liu, Y., Zhu, L., Hsiao, B. S., & Avila-Orta, C. A. (2004) · Polymer · doi:10.1016/j.polymer.2004.09.063 · Cited by 133
Ding, J., Maitra, P., & Wunder, S. L. (2003) · Journal of Polymer Science Part B: Polymer Physics · doi:10.1002/polb.10549 · Cited by 28
(1980) · doi:10.1016/b978-0-08-092664-3.50007-9 · Cited by 16
Metadata
- Authors
- Buckley, C. P., & Kovacs, A. J.
- Venue
- Progress in Colloid & Polymer Science
- Publisher
- Steinkopff
- Published
- 2007-12-18
- Pages
- 44-52
- OpenAlex
- W1484782351
- Cited by
- 229
- References
- 0
- FWCI
- 20.63
- Type
- book chapter
- Language
- en
- Open access
- closed
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- Buckley, C. P., & Kovacs, A. J. (2007). Melting behaviour of low molecular weight poly (ethylene-oxide) fractions. Progress in Colloid & Polymer Science. https://doi.org/10.1007/bfb0117122
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