Synthesis of Chitosan-Chitosan Composite Silica by Gamma Irradiation and Multi-Stage Deacetylation

2021 ◽  
Vol 1162 ◽  
pp. 109-116
Author(s):  
Yuli Rohyami ◽  
Ifa Puspasari ◽  
Noor Anis Kundari
Keyword(s):  
Gamma Irradiation ◽  
Sol Gel ◽  
Radiation Doses ◽  
Silica Membrane ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Composite ◽  
Deacetylation Degree ◽  
Multi Stage ◽  
Chitosan Composite

The Study on synthesis of chitosan prepared by gamma irradiation and multi-stage deacetylation as chitosan-silica membrane has been carried out. Synthesis of chitosan is carried out by deproteination with papain, demineralization, and deacetylation. Deacetylation of chitosan using gamma irradiation with 0, 5, 10, 15, 20, and 25 kGy and two and multi-stage deacetyllation. The synthesis of chitosan silica composite using sol gel method with the ratio of 1:1; 1:2; and 1:3. Based on the study, gamma irradiation increase deacetylation degree of chitosan and minimize the sodium hydroxide needed for deacetylation chitosan. The multi stage deacetylation increase the efficiency procedure for increase deacetylation degree of chitosan. Chitosan-silica composite has been synthesized by sol gel method. The gamma radiation doses have significantly influence on the deacetylation degree of chitosan. Gamma irradiation and multi stage deacetylation increase the efficiency procedure for preparation chitosan and chitosan-silica composite.

In situ preparation and characterization of polyimide/silica composite hemispheres by inverse aqueous emulsion technique and sol-gel method

2015 ◽  
Vol 293 (4) ◽  
pp. 1281-1287 ◽  
Author(s):  
Long Ma ◽  
Yang Yang ◽  
Chengyong He ◽  
Zhenxing Jia ◽  
Xiangyang Liu ◽  
...  
Keyword(s):  
Sol Gel ◽  
Aqueous Emulsion ◽  
Gel Method ◽  
Sol Gel Method ◽  
Emulsion Technique ◽  
Silica Composite ◽  
In Situ Preparation

scholarly journals Antibacterial and antibiofilm activities of silver-decorated zinc ferrite nanoparticles synthesized by a gamma irradiation-coupled sol–gel method against some pathogenic bacteria from medical operating room surfaces

RSC Advances ◽  
2021 ◽  
Vol 11 (45) ◽  
pp. 28361-28374
Author(s):  
M. I. A. Abdel Maksoud ◽  
Gharieb S. El-Sayyad ◽  
Hanan S. El-Bastawisy ◽  
Rasha M. Fathy
Keyword(s):  
Gamma Irradiation ◽  
Operating Room ◽  
Zinc Ferrite ◽  
Pathogenic Bacteria ◽  
Sol Gel ◽  
Ferrite Nanoparticles ◽  
Gel Method ◽  
Sol Gel Method

This work aimed at the gamma irradiation-assisted synthesis of silver (Ag)-decorated ZnFe2O4 (ZFO) ferrite nanoparticles (NPs), which were tested for their antibacterial and antibiofilm activities against some pathogenic bacteria from medical operating room surfaces.

scholarly journals Functional DNA–Silica Composite Prepared by Sol–Gel Method

2005 ◽  
Vol 37 (2) ◽  
pp. 94-101 ◽  
Author(s):  
Shuya Satoh ◽  
Bunshi Fugetsu ◽  
Motoyoshi Nomizu ◽  
Norio Nishi
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Composite ◽  
Functional Dna
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