具有螺旋结构的PEO/PHB核壳超细纤维的制备及表征

doi:10.11896/cldb.20020086

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Abstract Solutions of two biodegradable polymers, polyoxyethylene (PEO) and poly(β-hydroxybutyrate) (PHB), were individually delivered to the inner and outer channel of a coaxial-tube spinneret for electrospinning to prepare helical structured core-shell microfibers. The morphology, crystallinity and thermal properties of the fibers were characterized by TEM, ATR-FTIR, SEM, DSC and TGA, respectively. The results show that: The core-shell microfibers with smooth, non-porous and porous helix can be obtained by controlling the spinning process. Under electrospinning conditions of temperature 35 ℃, the voltage 14 kV, injection speed 0.03 mm/min, receiving distance 12 cm, drum speed 50 r/min, the core-shell microfibers with evenly distributed diameter and porous helical structures were fabricated. The starting and termination decomposition temperature of the PHB component in the core-shell microfibers of the porous helical structure were higher than that of the pure PHB fibers, and the change of the thermal decomposition rate was not obvious, while the initial decomposition temperature of the PEO component was higher than that of the pure PEO fibers, the thermal decomposition rate decreased, and the temperature change of the termination decomposition was not obvious.

Key words： polyoxyethylene poly (β-hydroxybutyrate) helical structure coaxial electrospinning

Published: 24 December 2020

CLC number:

TQ342

Fund:This work was financially supported by the Natural Science Foundation of Ningxia (2019AAC03109), the Institutions of Higher Learning Science and Techno-logy Research Project of Ningxia Province (NGY2017146), the Graduate Innovation Project of North Minzu University (YCX19101), the Research Start-up Fund for Imported Personnel of North Minzu University.

About author:: Jianghua Du received his Ph.D. degree in materials from Northwestern Polytechnical University in 2014. He is currently an associate professor in North Minzu University and participates in teaching. His research inte-rests are biodegradable polymer modification and processing.
Tingting Yang received her B. S. degree in June 2013 from North Minzu University in engineering. Since September 2017, she has been studying for a master′s degree in North Minzu University, focusing on the research of the preparation and performance research of PHB porous ultrafine fiber.

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	DU Jianghua
	YANG Tingting
	GUO Shengwei
	CHEN Shihua
	YU Yingchun

Cite this article:

DU Jianghua,YANG Tingting,GUO Shengwei, et al. Preparation and Characterization of Core (PEO)-Shell (PHB) Microfiber with Helical Structure[J]. Materials Reports, 2020, 34(24): 24165-24169.

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http://www.mater-rep.com/EN/10.11896/cldb.20020086 OR http://www.mater-rep.com/EN/Y2020/V34/I24/24165

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