Nanofibrous Bacterial Cellulose/Chitosan Scaffolds: Preparation, Structure and Mechanical Properties

2011 ◽  
Vol 1 (1) ◽  
pp. 60-67 ◽  
Author(s):  
Shuo Liu ◽  
Samuel Jeannes ◽  
Biqiong Chen
Keyword(s):  
Mechanical Properties ◽  
Bacterial Cellulose ◽  
Chitosan Scaffolds

Effect of Castor Oil Impregnation on the Physical and Mechanical Properties of Bacterial Cellulose

2012 ◽  
Vol 3 (1) ◽  
pp. 13-26
Author(s):  
Myrtha Karina ◽  
Lucia Indrarti ◽  
Rike Yudianti ◽  
Indriyati
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Bacterial Cellulose ◽  
Young’S Modulus ◽  
Castor Oil ◽  
Young's Modulus ◽  
Physical And Mechanical Properties ◽  
Scanning Electron Micrographs ◽  
Elongation At Break ◽  
Acetone Water

The effect of castor oil on the physical and mechanical properties of bacterial cellulose is described. Bacterial cellulose (BC) was impregnated with 0.5–2% (w/v) castor oil (CO) in acetone–water, providing BCCO films. Scanning electron micrographs revealed that the castor oil penetrated the pores of the bacterial cellulose, resulting in a smoother morphology and enhanced hydrophilicity. Castor oil caused a slight change in crystallinity indices and resulted in reduced tensile strength and Young's modulus but increased elongation at break. A significant reduction in tensile strength and Young's modulus was achieved in BCCO films with 2% castor oil, and there was an improvement in elongation at break and hydrophilicity. Impregnation with castor oil, a biodegradable and safe plasticiser, resulted in less rigid and more ductile composites.

Influence of Bacterial Cellulose Gel Film Modification on Its Mechanical Properties and Ability to Covalently Bind Enzymes

2021 ◽  
Vol 63 (3) ◽  
pp. 232-238
Author(s):  
D. A. Kadimaliev ◽  
A. A. Devyataeva ◽  
I. P. Grunyushkin ◽  
A. N. Malafeev ◽  
V. V. Revin
Keyword(s):  
Mechanical Properties ◽  
Bacterial Cellulose ◽  
Gel Film ◽  
Cellulose Gel

scholarly journals Mechanical properties of bacterial cellulose synthesised by diverse strains of the genus Komagataeibacter

2018 ◽  
Vol 81 ◽  
pp. 87-95 ◽  
Author(s):  
Si-Qian Chen ◽  
Patricia Lopez-Sanchez ◽  
Dongjie Wang ◽  
Deirdre Mikkelsen ◽  
Michael J. Gidley
Keyword(s):  
Mechanical Properties ◽  
Bacterial Cellulose

scholarly journals Surface Modification of Bacterial Cellulose for Biomedical Applications

2022 ◽  
Vol 23 (2) ◽  
pp. 610
Author(s):  
Teresa Aditya ◽  
Jean Paul Allain ◽  
Camilo Jaramillo ◽  
Andrea Mesa Restrepo
Keyword(s):  
Mechanical Properties ◽  
Drug Delivery ◽  
Tissue Engineering ◽  
Surface Modification ◽  
Bacterial Cellulose ◽  
Biomedical Applications ◽  
Human Tissues ◽  
Naturally Occurring ◽  
Microstructure And Mechanical Properties

Bacterial cellulose is a naturally occurring polysaccharide with numerous biomedical applications that range from drug delivery platforms to tissue engineering strategies. BC possesses remarkable biocompatibility, microstructure, and mechanical properties that resemble native human tissues, making it suitable for the replacement of damaged or injured tissues. In this review, we will discuss the structure and mechanical properties of the BC and summarize the techniques used to characterize these properties. We will also discuss the functionalization of BC to yield nanocomposites and the surface modification of BC by plasma and irradiation-based methods to fabricate materials with improved functionalities such as bactericidal capabilities.

Bionanocomposites of thermoplastic starch reinforced with bacterial cellulose nanofibres: Effect of enzymatic treatment on mechanical properties

2010 ◽  
Vol 80 (3) ◽  
pp. 866-873 ◽  
Author(s):  
Marco Aurélio Woehl ◽  
Carla Daniele Canestraro ◽  
Alexandre Mikowski ◽  
Maria Rita Sierakowski ◽  
Luiz Pereira Ramos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bacterial Cellulose ◽  
Thermoplastic Starch ◽  
Enzymatic Treatment ◽  
Cellulose Nanofibres

scholarly journals Transcrystallization of Isotactic Polypropylene/Bacterial Cellulose Hamburger Composite

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 508 ◽  
Author(s):  
Bo Wang ◽  
Fu-hua Lin ◽  
Xiang-yang Li ◽  
Xu-ran Ji ◽  
Si-xiao Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bacterial Cellulose ◽  
Isotactic Polypropylene ◽  
Crystallization Rate ◽  
Sem Analysis ◽  
Hydroxyl Groups ◽  
Hot Press ◽  
Ft Ir ◽  
Ir Analysis ◽  
The Fourier Transform

Isotactic polypropylene (iPP) is a commonly used thermoplastic polymer with many excellent properties. But high brittleness, especially at low temperatures, limits the use of iPP. The presence of transcrystallization of iPP makes it possible for fiber-reinforced iPP composites with higher strength. Bacterial cellulose (BC) is a kind of cellulose with great potential to be used as a new filler to reinforce iPP due to its high crystallinity, biodegradability and efficient mechanical properties. In this study, the iPP/BC hamburger composite was prepared by a simple hot press and maleic anhydride grafted polypropylene (MAPP) was used to improve the interface compatibility of iPP and BC. The polarizing microscope (POM) photograph shows that BC successfully induces the transcrystallization of iPP. The differential Scanning Calorimeter (DSC) date proves that the addition of BC could improve the thermal properties and crystallization rate of the composite. Especially, this change is more obvious of the iPP/MAPP/BC. The mechanical properties of the iPP/BC composites were greatly increased. This DSC date is higher than BC; we used BC particles to enhance the iPP in our previous research. The scanning Electron Microscope (SEM) analysis intuitively shows that the interface of the iPP/MAPP/BC is more smooth and flat than the iPP/BC. The fourier Transform infrared spectroscopy (FT-IR) analysis of the iPP/BC hamburger composites was shown that a new C=O group vibration appeared at 1743 cm−1, which indicated that the hydrogen bond structure of BC molecules was weakened and some hydroxyl groups were substituted after modification which can increase the lipophilicity of BC. These results indicated that the BC fiber can easily induce the transcrystallization of iPP, which has excellent mechanical properties. Moreover, the addition of MAPP contributes greatly to the interface compatibility of iPP and BC.

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