Preparation and Investigation on Novel Biodegradable Films Based on Konajac Glucomannan and Palmitoylated Konjac Glucomannan

Konjac glucomannan（KGM） has been generally used in food,film-former and biomedical applications,especially in the edible packing films due to its excellent film-forming ability,good biocompatibility and biodegrade-ability.It has the common flaws of natural polymers,such as low mechanical properties...

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Published in东华大学学报（英文版） Vol. 34; no. 2; pp. 269 - 273
Main Author 王家恒 黄红 陈利华 刘洋 王雪梅
Format Journal Article
LanguageEnglish
Published School of Chemistry and Chemical Engineering, Anhui University, Hefei 230039, China 30.04.2017
Subjects
konjac glucomannan (KGM)
intermolecular interactions
miscibility
blend film
palmitoylated konjac glucomannan
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ISSN1672-5220

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Summary:Konjac glucomannan（KGM） has been generally used in food,film-former and biomedical applications,especially in the edible packing films due to its excellent film-forming ability,good biocompatibility and biodegrade-ability.It has the common flaws of natural polymers,such as low mechanical properties and poor antimicrobial activity,which severely limit their applications.In this paper,novel biodegradable films（NBF） of KGM with palmitoylated KGM（PKGM） were prepared by using the solventcasting technique.The structure,thermal and mechanical properties of the NBF were investigated.The results suggested that a strong hydrogen bonding was formed in NBF,which resulted in good miscibility between KGM and PKGM.The tensile strength and elongation at break of the NBF were enhanced significantly with the increase of PKGM in a certain range.With the addition of 0.75%PKGM by weight,tensile strength and elongation at break of NBF were improved largely to 117.12 MPa and 14.39%.From this work,we hope to provide one of the promising ways to design new edible food films and coatings materials with good mechanical properties.
Bibliography:31-1920/N
konjac glucomannan （ KGM ） ; palmitoylated konjacglucomannan ; blend film; miscibility; intermolecular interactions
WANG Jiaheng, HUANG Hong, CHEN Lihua, LIU Yang, WANG Xuemei （chool of Chemistry and Chemical Engineering, Anhui University, Hefei 230039, China）
Konjac glucomannan（KGM） has been generally used in food,film-former and biomedical applications,especially in the edible packing films due to its excellent film-forming ability,good biocompatibility and biodegrade-ability.It has the common flaws of natural polymers,such as low mechanical properties and poor antimicrobial activity,which severely limit their applications.In this paper,novel biodegradable films（NBF） of KGM with palmitoylated KGM（PKGM） were prepared by using the solventcasting technique.The structure,thermal and mechanical properties of the NBF were investigated.The results suggested that a strong hydrogen bonding was formed in NBF,which resulted in good miscibility between KGM and PKGM.The tensile strength and elongation at break of the NBF were enhanced significantly with the increase of PKGM in a certain range.With the addition of 0.75%PKGM by weight,tensile strength and elongation at break of NBF were improved largely to 117.12 MPa and 14.39%.From this work,we hope to provide one of the promising ways to design new edible food films and coatings materials with good mechanical properties.
ISSN:1672-5220