Related Experiment Video
Updated: Dec 18, 2025

Bacterial Cellulose Spheres that Encapsulate Solid Materials
Published on: February 26, 2021
Synthesis, characterization and antibacterial properties of novel cellulose acetate sorbate
Liying Wei1, Jun Song2, Bowen Cheng1
1State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China.
Abstract:
In this paper, cellulose acetate (CA) with different degree of substitution (DS) of 2.17∼1.75 were obtained through hydrolysis of cellulose diacetate (CDA). Furthermore, novel cellulose acetate sorbate (CASA) were synthesized by esterification of CA and sorbic acid (SA). The DS of sorbyl groups varied within 0.12-1.20 by adjusting composition ratio, reaction time and temperature. Fourier transform infrared spectroscopy (FTIR), Nuclear magnetic resonance spectroscopy (NMR) and elemental analysis were used to determine the chemical structure. Scanning electron microscopy (SEM) indicated CASA showed denser surface morphology than CA. Thermal properties and crystallization of CASA were slightly decrease but did not affect their service performance. Specifically, all CASA showed excellent antibacterial ability, the maximum relative bactericidal rate reached 81.5 % for Escherichia coli (E. coli) and 95.4 % for Staphylococcus aureus (S. aureus), respectively. Moreover, the obtained CASA films using casting technique possessed good mechanical properties. These antibacterial CASA exhibited potential application in healthcare fields.
More Related Videos
10:47Manufacturing Of Robust Natural Fiber Preforms Utilizing Bacterial Cellulose as Binder
Published on: May 22, 2014
07:25Green and Low-cost Production of Thermally Stable and Carboxylated Cellulose Nanocrystals and Nanofibrils Using Highly Recyclable Dicarboxylic Acids
Published on: January 9, 2017
Related Concept Videos
Cellulose and Pectic Polysaccharides
As a cell matures, its cell wall specializes according to its type. For example, the...
Alkylation of β-Diester Enolates: Malonic Ester Synthesis
Acetals and Thioacetals as Protecting Groups for Aldehydes and Ketones
In the presence of multiple functional groups, when selective reduction of one group over the other is desired, groups like aldehydes and ketones that form acetals...
Alkylation of β-Ketoester Enolates: Acetoacetic Ester Synthesis
Anionic Chain-Growth Polymerization: Overview