The influence of alkaline treatment on the mechanical and structural properties of bacterial cellulose

2021 ◽  
pp. 118431
Author(s):  
Si-Qian Chen ◽  
Oliver W. Meldrum ◽  
Qiudong Liao ◽  
Zhaofeng Li ◽  
Xiao Cao ◽  
...  
2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Kai Yuan ◽  
Xiaofei Li ◽  
Xudong Yang ◽  
Shuai Luo ◽  
Xi Yang ◽  
...  

Abstract In this study, the effect of bacterial cellulose nanofibers (BCNF) incorporation on the structural and rheological properties of casein gels was investigated, where the mixed BCNF and casein gels were prepared by adding gluconic acid δ-lactone (GDL) to acidify the mixed polymer solutions at 3.0% casein concentration (w/v) and varying BCNF concentrations (0–0.5%, w/v). By changing the addition amount of GDL, the mechanical and structural properties of the mixed gels were studied at above, near and below the electric point (pI) of the casein. At pH above the pI of the casein, the introduction of BCNF initially increased the gel strength, but further addition of BCNF weakened the mixed gels. At near and below the pI of the casein, the incorporation of BCNF continuously increased the gel strength. Besides, all gels showed good structural homogeneity, without macroscopic phase separation occurring, which indicated good compatibility of BCNF with the casein gels.


Cellulose ◽  
2009 ◽  
Vol 16 (6) ◽  
pp. 1047-1055 ◽  
Author(s):  
Brigid A. McKenna ◽  
Deirdre Mikkelsen ◽  
J. Bernhard Wehr ◽  
Michael J. Gidley ◽  
Neal W. Menzies

2008 ◽  
Vol 94 (2) ◽  
pp. 431-436 ◽  
Author(s):  
S. U. Jen ◽  
Y. T. Chen ◽  
N. T. Yang ◽  
W. C. Cheng

2004 ◽  
Vol 129 (6) ◽  
pp. 411-413 ◽  
Author(s):  
Robert E Kraig ◽  
David Roundy ◽  
Marvin L Cohen

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2251 ◽  
Author(s):  
Alexandre Presas ◽  
Yongyao Luo ◽  
Zhengwei Wang ◽  
David Valentin ◽  
Mònica Egusquiza

Submerged systems are found in many engineering, biological, and medicinal applications. For such systems, due to the particular environmental conditions and working medium, the research on the mechanical and structural properties at every scale (from macroscopic to nanoscopic), and the control of the system dynamics and induced effects become very difficult tasks. For such purposes in submerged systems, piezoelectric patches (PZTp), which are light, small and economic, have been proved to be a very good solution. PZTp have been recently used as sensors/actuators for applications such as modal analysis, active sound and vibration control, energy harvesting and atomic force microscopes in submerged systems. As a consequence, in these applications, newly developed transducers based on PZTp have become the most used ones, which has improved the state of the art and methods used in these fields. This review paper carefully analyzes and summarizes these applications particularized to submerged structures and shows the most relevant results and findings, which have been obtained thanks to the use of PZTp.


Sign in / Sign up

Export Citation Format

Share Document