An ultrathin bacterial cellulose membrane with a Voronoi-net structure for low pressure and high flux microfiltration

Nanoscale ◽  
2019 ◽  
Vol 11 (38) ◽  
pp. 17851-17859 ◽  
Author(s):  
Ning Tang ◽  
Shichao Zhang ◽  
Yang Si ◽  
Jianyong Yu ◽  
Bin Ding
Keyword(s):  
Bacterial Cellulose ◽  
Self Assembly ◽  
High Performance ◽  
Low Pressure ◽  
Cross Linking ◽  
Cellulose Membrane ◽  
High Flux ◽  
Bacterial Cellulose Membrane ◽  
Evaporation Induced Self Assembly ◽  
Chemical Cross Linking

A BC membrane with a stable Voronoi-like nanonet layer was prepared by evaporation-induced self-assembly and chemical cross-linking for high performance microfiltration.

High-performance yarn supercapacitor based on directly twisted carbon nanotube@bacterial cellulose membrane

Cellulose ◽  
2020 ◽  
Vol 27 (13) ◽  
pp. 7649-7661 ◽  
Author(s):  
Wenbo Wang ◽  
Yuan Yang ◽  
Zeqi Chen ◽  
Zhongmin Deng ◽  
Lingling Fan ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Bacterial Cellulose ◽  
High Performance ◽  
Cellulose Membrane ◽  
Bacterial Cellulose Membrane

scholarly journals Enzymatic and Chemical Cross-Linking of Bacterial Cellulose/Fish Collagen Composites—A Comparative Study

2021 ◽  
Vol 22 (7) ◽  
pp. 3346
Author(s):  
Agata Sommer ◽  
Paulina Dederko-Kantowicz ◽  
Hanna Staroszczyk ◽  
Sławomir Sommer ◽  
Marek Michalec
Keyword(s):  
Thermal Stability ◽  
Bacterial Cellulose ◽  
Secondary Alcohol ◽  
Water Vapor Permeability ◽  
Polymer Chains ◽  
Cross Linking ◽  
Vapor Permeability ◽  
Covalent Bonds ◽  
Fish Collagen ◽  
Chemical Cross Linking

This article compares the properties of bacterial cellulose/fish collagen composites (BC/Col) after enzymatic and chemical cross-linking. In our methodology, two transglutaminases are used for enzymatic cross-linking—one recommended for the meat and the other proposed for the fish industry—and pre-oxidated BC (oxBC) is used for chemical cross-linking. The structure of the obtained composites is characterized by scanning electron microscopy, thermogravimetric analysis, X-ray diffraction, and Fourier transform infrared spectroscopy, and their functional properties by mechanical and water barrier tests. While polymer chains in uncross-linked BC/Col are intertwined by H-bonds, new covalent bonds in enzymatically cross-linked ones are formed—resulting in increased thermal stability and crystallinity of the material. The C2–C3 bonds cleavage in D-glucose units, due to BC oxidation, cause secondary alcohol groups to vanish in favor of the carbonyl groups’ formation, thus reducing the number of H-bonded OHs. Thermal stability and crystallinity of oxBC/Col remain lower than those of BC/Col. The BC/Col formation did not affect tensile strength and water vapor permeability of BC, but enzymatic cross-linking with TGGS improved them significantly.

scholarly journals Bacterial Cellulose Membrane Containing Epilobium angustifolium L. Extract as a Promising Material for the Topical Delivery of Antioxidants to the Skin

2021 ◽  
Vol 22 (12) ◽  
pp. 6269
Author(s):  
Anna Nowak ◽  
Paula Ossowicz-Rupniewska ◽  
Rafał Rakoczy ◽  
Maciej Konopacki ◽  
Magdalena Perużyńska ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Topical Application ◽  
Phenolic Acid ◽  
Antioxidant Properties ◽  
Ethanolic Extract ◽  
Cellulose Membrane ◽  
Hydroxybenzoic Acid ◽  
Epilobium Angustifolium ◽  
Bacterial Cellulose Membrane

Bacterial cellulose membranes (BCs) are becoming useful as a drug delivery system to the skin. However, there are very few reports on their application of plant substances to the skin. Komagataeibacter xylinus was used for the production of bacterial cellulose (BC). The BC containing 5% and 10% ethanolic extract of Epilobium angustifolium (FEE) (BC-5%FEE and BC-10%FEE, respectively) were prepared. Their mechanical, structural, and antioxidant properties, as well as phenolic acid content, were evaluated. The bioavailability of BC-FESs using mouse L929 fibroblasts as model cells was tested. Moreover, in vitro penetration through the pigskin of the selected phenolic acids contained in FEE and their accumulation in the skin after topical application of BC-FEEs was examined. The BC-FEEs were characterized by antioxidant activity. The BC-5% FEE showed relatively low toxicity to healthy mouse fibroblasts. Gallic acid (GA), chlorogenic acid (ChA), 3,4-dihydroxybenzoic acid (3,4-DHB), 4-hydroxybenzoic acid (4-HB), 3-hydroxybenzoic acid (3-HB), and caffeic acid (CA) found in FEE were also identified in the membranes. After topical application of the membranes to the pigskin penetration of some phenolic acid and other antioxidants through the skin as well as their accumulation in the skin was observed. The bacterial cellulose membrane loaded by plant extract may be an interesting solution for topical antioxidant delivery to the skin.

Characterization of Fe3O4@CS@NMDP magnetic nanoparticles with core–shell structure prepared by chemical cross-linking method

2017 ◽  
Vol 10 (05) ◽  
pp. 1750056 ◽  
Author(s):  
Huiping Shao ◽  
Jiangcong Qi ◽  
Tao Lin ◽  
Yuling Zhou ◽  
Fucheng Yu
Keyword(s):  
Magnetic Nanoparticles ◽  
Shell Structure ◽  
High Performance ◽  
Cross Linking ◽  
Composite Particles ◽  
Core Shell ◽  
The Core ◽  
Targeting Delivery ◽  
Core Shell Structure ◽  
Chemical Cross Linking

The core–shell structure composite magnetic nanoparticles (NPs), Fe3O4@chitosan@nimodipine (Fe3O4@CS@NMDP), were successfully synthesized by a chemical cross-linking method in this paper. NMDP is widely used for cardiovascular and cerebrovascular disease prevention and treatment, while CS is of biocompatibility. The composite particles were characterized by an X-ray diffractometer (XRD), a Fourier transform infrared spectroscopy (FT-IR), a transmission electron microscopy (TEM), a vibrating sample magnetometers (VSM) and a high performance liquid chromatography (HPLC). The results show that the size of the core–shell structure composite particles is ranging from 12[Formula: see text]nm to 20[Formula: see text]nm and the coating thickness of NMDP is about 2[Formula: see text]nm. The saturation magnetization of core–shell composite NPs is 46.7[Formula: see text]emu/g, which indicates a good potential application for treating cancer by magnetic target delivery. The release percentage of the NMDP can reach 57.6% in a short time of 20[Formula: see text]min in the PBS, and to 100% in a time of 60[Formula: see text]min, which indicates the availability of Fe3O4@CS@NMDP composite NPs for targeting delivery treatment.

Edible pH sensor based on immobilized red cabbage anthocyanins into bacterial cellulose membrane for intelligent food packaging

2020 ◽  
Vol 33 (8) ◽  
pp. 321-332 ◽  
Author(s):  
Bambang Kuswandi ◽  
Ni P.N. Asih ◽  
Dwi K. Pratoko ◽  
Nia Kristiningrum ◽  
Mehran Moradi
Keyword(s):  
Bacterial Cellulose ◽  
Food Packaging ◽  
Ph Sensor ◽  
Cellulose Membrane ◽  
Red Cabbage ◽  
Bacterial Cellulose Membrane

Bacterial cellulose membrane as separation medium

1993 ◽  
Vol 50 (6) ◽  
pp. 965-969 ◽  
Author(s):  
Hideki Shibazaki ◽  
Shigenori Kuga ◽  
Fumihiko Onabe ◽  
Makoto Usuda
Keyword(s):  
Bacterial Cellulose ◽  
Cellulose Membrane ◽  
Bacterial Cellulose Membrane ◽  
Separation Medium
Sign in / Sign up

Export Citation Format

Share Document