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Improvements of Tensile Properties and Durability of Chitosan Fiber Using Methanol Drying Treatment
Judawisastra H.a, Hadyiswanto I.O.C.a, Sitohang R.D.R.a, Winiati W.b
a Material Science and Engineering Research Group, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Chemical Technology of Textile Department, Center for Textile, Bandung, 40272, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Summary Chitosan fiber is a biodegradable and biocompatible natural polymer that is potentially suitable as absorbable suture. One approach to improve mechanical properties of chitosan fiber is application of chemical modification. This study aims to improve the tensile properties and durability of chitosan fibers, in terms of biodegradation resistance, at various deacetylation degrees using methanol drying treatment. The fibers were made of chitosan with deacetylation degrees (%DD) of 67.4% and 70.6% using wet spinning method and dried using aq. 30% methanol for 4 h. Examinations were carried out by means of X-ray diffraction, physical properties characterization, tensile test and in vitro degradation test. Results show that methanol drying treatment could decrease fiber’s diameter, while increasing fiber’s density, tensile strength, and biodegradation resistance, but did not always increase fiber’s maximum elongation. The expected higher elongation was achieved for 70.6%DD fiber, however the more significant improvement of durability was obtained for 67.4%DD fiber. Methanol drying affected those fibers’ characteristics due to the increase in degree of crystallinity as a result of chitosan fiber’s chemical structure change from hydrated to anhydrous structure. According to the United States Pharmacopoeia (USP) standard, the fibers produced could be categorized as absorbable suture number 0 and 1.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]biodegradable,Chitosan fibers,Deacetylation degree,Drying treatment,In-Degree,In-vitro,Physical properties characterization,Wet-spinning method[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]biodegradable,chitosan fiber,deacetylation degree,methanol treatment,tensile properties[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1002/masy.201550320[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]