Preparation and Characterization of Chitosan Coated Surgical Gauze Using Potassium Persulfate as Thermal Initiator
| Autor: | Mubarak A. Khan, Ruhul A. Khan, A. I. Mustafa, Zinia Nasreen |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Absorption of water
Materials science Aqueous solution Polymers and Plastics General Chemical Engineering Materials Science (miscellaneous) Potassium technology industry and agriculture Biomaterial chemistry.chemical_element macromolecular substances Potassium persulfate carbohydrates (lipids) Chitosan chemistry.chemical_compound chemistry Ultimate tensile strength Polymer chemistry Materials Chemistry Curing (chemistry) Nuclear chemistry |
| Zdroj: | Polymer-Plastics Technology and Engineering. 48:121-129 |
| ISSN: | 1525-6111 0360-2559 |
| DOI: | 10.1080/03602550802539957 |
| Popis: | Chitosan powder was extracted from prawn shell via chitin formation by chemical treatment. Chitosan solution (2 wt.%) was prepared in aqueous solution containing ethanoic acid (2 wt.%) along with varying amounts of potassium persulphate as thermal initiator (10 to 50 mg). Surgical gauze was immersed in the chitosan solution for 10–45 min. Coating was carried out at 70–110°C and heating time varied from 30–180 min. Chitosan uptake and the mechanical properties of the chitosan coated surgical gauze, such as tensile strength (TS) and elongation at break (Eb), were measured. Soaking time, curing time, and curing temperature of the surgical gauze were optimized for the preparation of coated gauze over chitosan uptake and mechanical properties. Surgical gauze soaked for 20 min at 90°C for 120 min of curing showed the highest chitosan uptake and TS (9 MPa). Soil burial tests revealed that coated gauze became twisted and almost degraded within 6 weeks of ageing. Water uptake properties of the coated gauze were mo... |
| Databáze: | OpenAIRE |
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