Preparation and Characterization of PHB/PLLA/PEO Composite Ultra-Fine Fibers via Solution Dry-Spinning Technique

Abstract:

Poly (3-hydroxybutyrate) (PHB)/poly (L-lactide) (PLLA)/poly (ethylene-oxide) (PEO) composite Ultrafine Fibers were prepared by solution dry spinning technique. Scanning electron microscope (SEM) and X-ray diffraction (XRD) were used to characterize the PHB/PLLA/PEO composite Ultra-fine fibers. In all of the spinning conditions investigated, the average diameter of the as-spun PHB/PLLA/PEO fibers was 2.1 μm and increased with increasing the mass ratio of PHB/PLLA. The degree of crystallinity of as-spun PHB/PLLA/PEO fibers increased with increasing PHB content in their blends, and the α-form crystals of PHB and PLLA in as-spun fibers were obtained. When the mass ration of PHB/PLLA in as-spun PHB/PLLA/PEO fibers was 3:1,the structure of as-spun fibers was the skin-core, which PHB formed core of fibers and PLLA form skin of fibers; when the mass ration of PHB/PLLA in as-spun PHB/PLLA/PEO fibers was 1:1, PLLA and PEO were embedded into PHB phase by droplet and febrile morphology to form matrix-fibril structure of as-spun PHB/PLLA/PEO fibers.

• Periodical: Advanced Materials Research (Volumes 332-334)
• Pages: 757-762
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.332-334.757
• Online since: September 2011
• Authors: Jiang Hua Du, Qing Fang Yang, Xiao Dong Fan
• Keywords: Poly (3-Hydroxybutyrate), Poly (Ethylene Oxide), Poly(L-Lactide), Ultrafine Fibers

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