Cited by 32Polymer crystallization and propertiesBlock Copolymer Self-AssemblyElectrospun Nanofibers in Biomedical Applications

Crystallization behaviour of poly (ethylene oxide) under confinement in the electrospun nanofibers of polystyrene/poly (ethylene oxide) blends

Samanta, Pratick, V., Thangapandian, Singh, Sajan, Srivastava, Rajiv, Nandan, Bhanu, Liu, Chien-Liang, Chen, Hsin-Lung·2016·Soft Matter

Abstract

We have studied the confined crystallization behaviour of poly(ethylene oxide) (PEO) in the electrospun nanofibers of the phase-separated blends of polystyrene (PS) and PEO, where PS was present as the major component. The size and shape of PEO domains in the nanofibers were considerably different from those in the cast films, presumably because of the nano-dimensions of the nanofibers and the extensional forces experienced by the polymer solution during electrospinning. The phase-separated morphology in turn influenced the crystallization behaviour of PEO in the blend nanofibers. At a PEO weight fraction of ≥0.3, crystallization occurred through a heterogeneous nucleation mechanism similar to that in cast blend films. However, as the PEO weight fraction in the blend nanofibers was reduced from 0.3 to 0.2, an abrupt transformation of the nucleation mechanism from the heterogeneous to predominantly homogenous type was observed. The change in the nucleation mechanism implied a drastic reduction of the spatial continuity of PEO domains in the nanofibers, which was not encountered in the cast film. The melting temperature and crystallinity of the PEO crystallites developed in the nanofibers were also significantly lower than those in the corresponding cast films. The phenomena observed were reconciled by the morphological observation, which revealed that the phase separation under the radial constraint of the nanofibers led to the formation of small-sized fibrillar PEO domains with limited spatial connectivity. The thermal treatment of the PS/PEO blend nanofibers above the glass transition temperature of PS induced an even stronger confinement effect on PEO crystallization.

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Crossref · 10.1039/c6sm00648e

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  • The thermal breakup of electrospun fibers technique has been successfully employed for PEO, PVDF, and PBA to investigate homogeneous/surface nucleation or fractionated crystallization, even without compatibilizers.

    “The above-described technique has been successfully employed for other polymeric materials, such as PEO [ 64 , 65 ], PVDF [ 66 , 67 ], PBA [68] , in order to investigate homogeneous/surface nucleation or fractionated crystallization, even without the addition of compatibilizers.”

    From Fractionated crystallization in semicrystalline polymers (2021) · cites this paper as [64]

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Authors
Samanta, P., V., T., Singh, S., Srivastava, R., Nandan, B., Liu, C.-L., & Chen, H.-L.
Affiliations
  • Indian Institute of Technology Delhi (IN)
  • National Tsing Hua University (TW)
Corresponding author
  • Nandan, Bhanu
  • Chen, Hsin-Lung
Venue
Soft Matter
Published
2016
Volume
12
Issue
23
Pages
5110-5120
ISSN
  • 1744-683X (ISSN-L)
  • 1744-6848
OpenAlex
W2347003421
Cited by
32
References
64
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 3 · 2022: 4 · 2021: 5 · 2020: 4 · 2019: 4 · 2018: 6 · 2017: 3
FWCI
2.96
Type
journal article
Language
en
Open access
closed
Locations
  • Soft Matter (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
  • Physical Sciences › Materials Science › Biomaterials › Electrospun Nanofibers in Biomedical Applications
Keywords
poly(ethylene oxide), confined crystallization, electrospun nanofibers, phase separation, heterogeneous nucleation, homogeneous nucleation, crystallinity, melting point, annealing, radial confinement

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