Spinning Process of Chitosan Fiber with Low Concentration of Formic Acid Solution and its Characteristics

Thazin Han; Nitar Nwe; Phyu Phyu Win; Hiroshi Tamura

doi:10.21467/jmm.1.1.24-34

Authors

Thazin Han Department of Research and Innovation, Ministry of Education, Myanmar
Nitar Nwe Kansai University, Suita, Osaka 564-8680, Japan
Phyu Phyu Win Department of Research and Innovation, Ministry of Education, Myanmar
Hiroshi Tamura Kansai University Suita, Osaka 564-8680

DOI:

https://doi.org/10.21467/jmm.1.1.24-34

Abstract

The wet spinning of chitosan fiber was carried out using 7% chitosan concentration, 4% aqueous formic acid as a solvent for chitosan and 6M of aqueous CaCl₂.2H₂O as a coagulation system. A better method for preparation of chitosan spinning solution was investigated by studying the effect of reaction time on incubation of spinning solution in open air. The shear viscosity of chitosan solution (22.63 ~ 23.09 Pa.s) was found to be stabilize the spinning of chitosan fiber in this study. The characteristics of different chitosan fibers were determined by FT-IR and ¹HNMR spectroscopies, XRD diffraction, scanning electron microscopy and mechanical properties. All the fibers were observed with high tenacity (dTex). The strength of fiber and water retention of chitosan fiber (%) was significantly increased with increasing the incubation time of spinning solution in open air.

Keywords:

aqueous formic acid, chitosan, fiber, tenacity, water retention.

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Author Biographies

Thazin Han, Department of Research and Innovation, Ministry of Education, Myanmar

Deputy Director

Nitar Nwe, Kansai University, Suita, Osaka 564-8680, Japan

Principal Researcher, Faculty of Chemistry, Materials and Bioengineering and HRC

Phyu Phyu Win, Department of Research and Innovation, Ministry of Education, Myanmar

Deputy Director General

Hiroshi Tamura, Kansai University Suita, Osaka 564-8680

Associate Dean, Division of International Affairs.

Director, Japan-EU Research Center.

Dean and Professor, Faculty of Chemistry, Materials and Bioengineering and HRC.

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