Catalyst-free crosslinking modification of nata-de- coco-based bacterial cellulose nanofibers using citric acid

Salihu, Rabiu and Abd Razak, Saiful Izwan and Ahmad Zawawi, Nurliyana and Shahir, Shafinaz and Sani, Mohd Helmi and Wsoo, Mohammed Ahmad and Mat Nayan, Nadirul Hasraf (2021) Catalyst-free crosslinking modification of nata-de- coco-based bacterial cellulose nanofibers using citric acid. Chitosan, Chitin, and Cellulose Nanofiber Biomaterials, 13 (17). pp. 1-21.

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Abstract

Bacterial cellulose (BC) has gained research attention in materials science and biomedicine due to its fascinating properties. BCs' fiber collapse phenomenon (inability to reabsorb water after dehydration) is one of the drawbacks that limit its potentials. To overcome this, a catalyst-free thermal crosslinking reaction was employed to modify the BC using citric acid (CA) without compromising the biocompatibility. Properties evaluation of the modified BC (MBC) by FTIR, XRD, SEM/EDX, TGA, and Tensile analysis confirmed the fiber crosslinking and improvement of some properties that could be advantageous for various applications. The modified nanofiber seems to maintain its inherent crystallinity and thermal stability with an increased water absorption/swelling and tensile modulus. The resulting MBC reported here can be relevant for wound dressings and tissue scaffolding.

Item Type:	Article
Uncontrolled Keywords:	Bacterial cellulose; citric acid; catalyst-free; crosslinking; nata-de-coco; biomedicine
Subjects:	R Medicine > R Medicine (General) > R856-857 Biomedical engineering. Electronics. Instrumentation T Technology > T Technology (General)
Divisions:	Faculty of Engineering Technology > Department of Chemical Engineering Technology
Depositing User:	Mr. Abdul Rahim Mat Radzuan
Date Deposited:	30 Jan 2022 01:08
Last Modified:	30 Jan 2022 01:08
URI:	http://eprints.uthm.edu.my/id/eprint/6297

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