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Confined Crystal Melting in Edgeless Poly(L-lactic acid) Crystalsomes
Journal article   Open access

Confined Crystal Melting in Edgeless Poly(L-lactic acid) Crystalsomes

Mark C. Staub, Ruipeng Li, Masafumi Fukuto, Christopher Y. Li and Brookhaven National Lab. (BNL), Upton, NY (United States)
ACS macro letters, v 9(12), pp 1773-1778
15 Dec 2020
DOI: https://doi.org/10.1021/acsmacrolett.0c00693
PMID: 35653681
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://www.osti.gov/biblio/1762750View
SubmittedOpen Access (License Unspecified),  Open

Abstract

Physical Sciences Polymer Science Science & Technology
Polymer single crystals tend to be quasi two-dimensional (2D) lamellae and their small lateral surfaces are the starting points of lamella melting and thickening. However, the recently discovered crystalsomes, which are defined for hollow single crystal-like spherical shells, are edgeless, self-confined, and incommensurate with translational symmetry. This work concerns the structure and melting behavior of these edgeless crystalsomes. Poly(L-lactic acid) crystalsomes were grown using a miniemulsion solution crystallization method. Differential scanning calorimetry and in situ wide-angle X-ray diffraction were used to follow the structural evolution of the crystalsomes upon heating. Our results demonstrated that the structure and melting behavior of crystalsomes are curvature-dependent and significantly different from their flat crystal counterpart.

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Collaboration types
Domestic collaboration
Web of Science research areas
Polymer Science
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