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Title:Chemical binding of chitosan and chitosan nanoparticles onto oxidized cellulose
Authors:Šauperl, Olivera (Author)
Kostić, Mirjana (Author)
Milanovic, Jovana (Author)
Fras Zemljič, Lidija (Author)
INDA, Association of the Nonwoven Fabrics Industry (Authorship owner)
Files:.pdf Journal_of_Engineered_Fibers_and_Fabrics_2015_Sauperl_et_al._Chemical_Binding_of_Chitosan_and_Chitosan_Nanoparticles_onto_Oxidized_Cellu.pdf (144,32 KB)
MD5: 2FF0CC440BF29687EE426E134ABEDFF9
URL http://www.jeffjournal.org/papers/Volume10/V10I2(8)%20O.%20Sauperl.pdf
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:The aim of this study was to analyze binding of chitosan and chitosan nanoparticles onto cellulose via oxidized cellulose. The ability of chitosan and chitosan nanoparticles to be adsorbed onto surfaces was determined by the use of the XPS spectroscopy which provided information about chemical composition of the fiber surface. On the other hand, the gravimetric method was also used by which the amount of chitosan and chitosan nanoparticles bounded onto surface was calculated based on the difference in masses before and after functionalization. The most important was to study the influence of aldehyde groups on the stability of chitosan binding onto cellulose. Thus, desorption of chitosan/chitosan nanoparticles from the fiber surfaces was evaluated by the presence of total nitrogen (TN) in desorption bath as well as by polyelectrolyte titrations. Together with these two methods, desorption was evaluated also by gravimetric method, where the extent of desorption was evaluated on the basis of the differences in the masses of fibers before and after desorption. It is concluded that the chitosan and chitosan nanoparticles are more efficiently bounded onto oxidized cellulose in comparison with the non-oxidized (reference) ones. Despite the binding of the positively-charged amino groups with the negative groups of cellulose and consequently smaller amount of available/residual protonated amino groups that are responsible for bioactivity, such functionalized fibers are still specifically antimicrobial.
Keywords:cellulose, oxidized cellulose, oxidation, chitosan, chitosan nanoparticles, FTIR, XPS, antimicrobial functionalization
Year of publishing:2015
Number of pages:str. 70-77
Numbering:št. 2, Letn. 10
ISSN on article:1558-9250
COBISS_ID:18728214 New window
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Record is a part of a journal

Title:Journal of Engineered Fibers and Fabrics
Publisher:INDA, Association of the Nonwoven Fabrics Industry
COBISS.SI-ID:15831318 New window

Secondary language

Keywords:celuloza, oksidirana celuloza, oksidacija, hitozan, hitozanski nanodelci, FTIR spektroskopija, XPS, protimikrobna funkcionalizacija


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