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Effect of polyethelene oxide on the thermal degradation of cellulose biofilm : low cost material for soft tissue repair in dentistry

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Effect of polyethelene oxide on the thermal degradation of cellulose biofilm : low cost material for soft tissue repair in dentistry

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dc.contributor.author Akkus, Anna es
dc.contributor.author Tyler, Rakim es
dc.contributor.author Schiraldi, David es
dc.contributor.author Roperto, Renato es
dc.contributor.author Faddoul, Fady es
dc.contributor.author Teich, Sorin es
dc.date.accessioned 2017-09-28T11:27:43Z
dc.date.available 2017-09-28T11:27:43Z
dc.date.issued 2017 es
dc.identifier.citation Akkus, Anna ; Tyler, Rakim ; Schiraldi, David ; Roperto, Renato ; Faddoul, Fady ; Teich, Sorin. Effect of polyethelene oxide on the thermal degradation of cellulose biofilm : low cost material for soft tissue repair in dentistry. En: Journal of Clinical and Experimental Dentistry, 9 7 2017: 875-878 es
dc.identifier.uri http://hdl.handle.net/10550/61242
dc.description.abstract Bio cellulose is a byproduct of sweet tea fermentation known as kombusha. During the biosynthesis by bacteria cellulose chains are polymerized by enzyme from activated glucose. The single chains are then extruded through the bacterial cell wall. Interestingly, a potential of the Kombucha?s byproduct bio cellulose (BC) as biomaterial had come into focus only in the past few decades. The unique physical and mechanical properties such as high purity, an ultrafine and highly crystalline network structure, a superior mechanical strength, flexibility, pronounced permeability to gases and liquids, and an excellent compatibility with living tissue that reinforced by biodegradability, biocompatibility, large swelling ratios. The bio-cellulose film specimens were provided by the R.P Dressel dental materials laboratory, Department of Comprehensive Care, School of Dental Medicine, Case Western Reserve University, Cleveland, US. The films were harvested, washed with water and dried at room temperature overnight. 1wt% of PEG-2000 and 10wt% of NaOH were added into ultrapure water to prepare PEG/NaOH solution. Then bio-cellulose film was added to the mixture and swell for 3 h at room temperature. All bio-cellulose film specimens were all used in the TA Instruments Q500 Thermogravmetric Analyzer to investigate weight percent lost and degradation. The TGA was under ambient air conditions at a heating rate of 10ºC/min. PEG control exhibited one transition with the peak at 380ºC. Cellulose and cellulose/ PEG films showed 3 major transitions. Interestingly, the cellulose/PEG film showed slightly elevated temperatures when compared to the corresponding transitions for cellulose control. The thermal gravimetric analysis (TGA) degradation curves were analyzed. Cellulose control film exhibited two zero order transitions, that indicate the independence of the rate of degradation from the amount on the initial substance. The activation energies for three transitions for cellulose and cellulose/PEG showed increasingly higher values for the transitions at higher temperatures. es
dc.title Effect of polyethelene oxide on the thermal degradation of cellulose biofilm : low cost material for soft tissue repair in dentistry es
dc.type journal article es_ES
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/jced.53465 es
dc.type.hasVersion VoR es_ES

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