Crystal Growth & Design
Crystal Growth & Design
5 years ago

Asymmetric Growth of Co-Crystallized Nano- and Micrometer-Sized Lamellae to Janus-Faced Spherulites in Poly(l-lactic acid) with Amorphous Poly(methyl methacrylate)

Asymmetric Growth of Co-Crystallized Nano- and Micrometer-Sized Lamellae to Janus-Faced Spherulites in Poly(l-lactic acid) with Amorphous Poly(methyl methacrylate)
Eamor M. Woo, Graecia Lugito
Interior assembly of Janus-faced spherulites in PLLA/PMMA demonstrates two crystal types differing in lattice modifications, optical birefringence, and lamellar dimensions. The loose α′-form platelet lamellae grow faster along sheaf-nuclei, periodically bend or branch out, appearing as strong birefringent dendritic region(s). As opposed to this, the compact α-form nanorod-like lamellae, perpendicular to nuclei-sheaf direction, pack randomly and grow slowly, appearing as weak birefringent region(s).

Publisher URL: http://dx.doi.org/10.1021/acs.cgd.7b00974

DOI: 10.1021/acs.cgd.7b00974

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