Cited by 245Polymer crystallization and propertiesCrystallization and Solubility StudiesMaterial Dynamics and Properties

Effect of annealing time on the self-nucleation behavior of semicrystalline polymers

Lorenzo, Arnaldo T., Arnal, María L., Sánchez, Johan J., Müller, Alejandro J.·2006·Journal of Polymer Science Part B: Polymer Physics

Abstract

Abstract It is widely known that when a polymer is heated just above its melting point and is kept at a given temperature (denoted T s ) for a short time, when it is cooled down its nucleation density increases and its peak crystallization temperature shifts to higher temperatures, as detected for instance by differential scanning calorimetry (DSC). The T s temperature range where the described process occurs has been named Domain II self‐nucleation (SN) because the selected T s temperatures are high enough to melt the polymer without causing detectable annealing of any remnant crystals by DSC. Experimental results obtained by DSC, polarized light optical microscopy (PLOM), and rheology indicate that these techniques are unable to detect any remaining crystal fragments in Domain II. Our kinetic results demonstrate that Domain II SN is a transient phenomenon that can even disappear if enough time at T s is allowed. Results of the study of the time dependence of the SN effect indicates two possibilities: (a) if crystal fragments are present (even if undetected by the employed techniques) their final melting is a very slow process (in the order of hours); (b) if all crystallites have melted in Domain II, then it may be more plausible to reinterpret self‐nuclei as arising from “precursors” whose detail nature has not been the subject of this investigation but that can be regarded as either a residual segmental orientation in the melt ( i.e. , a melt memory effect) or a mesophase in a preordered state. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 1738–1750, 2006

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Crossref · 10.1002/polb.20832

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  • It has been postulated that self-nuclei in Domain IIa can be regions in the melt where partial orientation of the chains remains, due to the survival of inter-segmental interactions that were present in the crystalline state.

    “It has been postulated that they can be regions in the melt where partial orientation of the chains remain, thanks to the survival of inter-segmental interactions that were present in the crystalline state [ 321 , 322 , 333-337 ].”

    From Fractionated crystallization in semicrystalline polymers (2021) · cites this paper as [322]

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Authors
Lorenzo, A. T., Arnal, M. L., Sánchez, J. J., & Müller, A. J.
Affiliations
Universidad Simón Bolívar (VE)
Corresponding author
Müller, Alejandro J.
Venue
Journal of Polymer Science Part B: Polymer Physics
Publisher
Wiley
Published
2006-05-08
Volume
44
Issue
12
Pages
1738-1750
ISSN
  • 0887-6266 (ISSN-L)
  • 1099-0488
OpenAlex
W2051300354
Cited by
245
References
73
Citations by year
2026: 12 · 2025: 13 · 2024: 11 · 2023: 15 · 2022: 19 · 2021: 18 · 2020: 13 · 2019: 12 · 2018: 17 · 2017: 15 · 2016: 16 · 2015: 15 · 2014: 23 · 2013: 10 · 2012: 5
FWCI
5.18
Type
journal article
Language
en
Open access
closed
Locations
Journal of Polymer Science Part B Polymer Physics (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Materials Science › Materials Chemistry › Crystallization and Solubility Studies
  • Physical Sciences › Materials Science › Materials Chemistry › Material Dynamics and Properties
Keywords
self-nucleation, semicrystalline polymers, annealing time, nucleation density, crystallization kinetics

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