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Wyświetlanie 1-15 z 21
Tytuł:
Viscometric studies of chitosan/polyacrylamide mixtures
Autorzy:
Lewandowska, Katarzyna
Sionkowska, Alina
Krasińska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1035184.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
chitosan
miscibility criteria
polyacrylamide
polymer blends
viscosity interaction parameters
Opis:
Polymer-polymer interactions and miscibility for chitosan (Ch) and partially hydrolysed polyacrylamide (HPAM) have been investigated using dilute solution viscosity. The intrinsic viscosity, [η], and the viscosity interaction parameters, bm, have been determined for the binary (solvent/polymer) and ternary (solvent/polymer A/polymer B) systems. Degree of miscibility of these polymer mixtures was estimated on the basis of two criteria. The final result depends on (i) the applied extrapolation method used for determination of the interaction parameters, (ii) the assumed miscibility criteria, and (iii) the blend composition.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2014, 19; 73-78
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The properties of fish skin collagen films after cross-linking with tannic acid
Autorzy:
Sionkowska, Alina
Lewandowska, Katarzyna
Szulc, Marta
Brudzyńska, Patrycja
Kulka, Karolina
Piwowarski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/27324038.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
collagen
biomaterials
medicine
wound dressing
cross-linking
tannic acid
kolagen
biomateriały
medycyna
Opis:
Over the last three decades, an increasing interest in the preparation of new materials for wound healing has been observed. Collagen is a widely used biomaterial, and especially fish skin collagen is more and more popular among scientists. This study aimed to obtain thin films from native fish skin collagen and collagen cross-linked with tannic acid. Infrared spectroscopy, mechanical test, topographic imaging, and swelling test were used to characterize the features of the mentioned films. Statistical evaluation of the results was conducted with the Q-Dixon test. Infrared spectroscopy analysis showed that in the IR spectra of examined biomaterials, there are slight shifts in band positions after tannic acid cross-linking. The mechanical properties of the cross-linked material were different from those of the native collagen film. The Young’s modulus was higher for cross-linked collagen, whereas the elongation at break was lower than for pure collagen. The swelling of the collagen films increased after cross-linking with tannic acid. Swelling tests indicated that collagen cross-linked with tannic acid absorbs more water than before cross-linking. The properties of collagen films were significantly improved after tannic acid cross-linking. All alterations can be a result of collagen cross-linking by tannic acid, probably by forming hydrogen bonds between collagen and tannic acid.
Źródło:
Engineering of Biomaterials; 2023, 26, 168; 9--14
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the type solvent on the structure of chitosan blends with hyaluronic acid
Autorzy:
Lewandowska, Katarzyna
Sionkowska, Alina
Grabska, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/1034698.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
chitosan
hyaluronic acid
microscopy.
polymer blends
surface properties
Opis:
The influence of the type solvent on the structure of chitosan, hyaluronic acid and their blend films was investigated. Aqueous acetic acid, hydrochloric acid, sodium chloride and aqueous acetic acid/NaCl were used as solvents for chitosan, hyaluronic acid and Ch/HA solution blends. Ch, HA and their blend films were prepared by casting technique. The homogeneity and morphology of chitosan blends were ascertained from the tapping-mode atomic force microscopy (AFM) and scanning electron microscopy (SEM). The changes of topography images are considered by determining the root mean square (RMS, Rq) deviation in the image data. The surface roughness of chitosan, hyaluronic acid and Ch/HA blended films was altered by mixing. The structure of chitosan blends with hyaluronic acid depends on the blend composition and on the solvent used for preparing the blend.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2016, 21; 147-153
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of thin films made of chitosan/collagen, potassium silicate and tannic acid on viability of cancer and healthy cells
Autorzy:
Miłek, Oliwia
Kaczmarek, Beata
Owczarek, Agata
Nadolna, Kinga
Kleszczyński, Konrad
Sionkowska, Alina
Osyczka, Anna M.
Powiązania:
https://bibliotekanauki.pl/articles/284208.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Źródło:
Engineering of Biomaterials; 2019, 22, no.153; 85
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rheological properties of collagen gels after UV treatment
Autorzy:
Sionkowska, Alina
Adamiak, Katarzyna
Lewandowska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1844906.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
rheological properties
collagen gel
treatment
właściwości reologiczne
żel kolagenowy
lecznictwo
Źródło:
Engineering of Biomaterials; 2020, 23, 158 spec. iss.; 9
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physico-chemical characterization and biological tests of silk fibroin/collagen/chitosan materials, cross-linked by glyoxal solution
Autorzy:
Grabska-Zielińska, Sylwia
Sionkowska, Alina
Monteiro, Fernando J.
Coelho, Catarina C.
Lewndowska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1844925.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biological tests
compounds
physico-chemical properties
testy biologiczne
kompozyty
właściwości fizyko-chemiczne
Źródło:
Engineering of Biomaterials; 2020, 23, 158 spec. iss.; 20
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New materials based on hyaluronic acid and egg albumin mixture
Autorzy:
Gadomska, Magdalena
Musiał, Katarzyna
Sionkowska, Alina
Powiązania:
https://bibliotekanauki.pl/articles/1844862.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
hyaluronic acid
albumin from chicken egg
mechanical properties
polymer films
Opis:
In this work, new materials based on the mixture of hyaluronic acid and albumin from chicken eggs have been studied. Tests were carried out to determine the molecular weight of the tested hyaluronic acids. The properties of hyaluronic acid were investigated and significant differences were found in the mechanical properties of the tested compound, depending on its molecular weight. It was found that egg albumin can be combined with hyaluronic acid and thin films can be obtained. Spectrometric tests were performed both for pure compounds and for mixtures of hyaluronic acid with chicken egg albumin. IR spectroscopy showed that interactions between hyaluronic acid and egg albumin are mainly by hydrogen bonds, as the shifts in the main bands in IR spectra were observed. The addition of egg albumin to hyaluronic acid leads to the decrease of its mechanical properties. The deterioration of the mechanical properties of polymer films from HA-albumin mixtures may be due to interactions between compounds which were shown in the IR spectra. The thin films based on hyaluronic acid and egg albumin blend can be used as adhesive materials in biomedicine and cosmetics. Both biopolymers are biocompatible and biodegradable so we can expect a biocompatible and biodegradable material for potential application as adhesives.
Źródło:
Engineering of Biomaterials; 2021, 4, 160; 15-21
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New composites based on bacterial nanocellulose and gelatin
Autorzy:
Sionkowska, Alina
Mężykowska, Oliwia
Saha, Nabanita
Menaszek, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/1844920.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
composites
nanocellulose
gelatin
kompozyty
nanoceluloza
żelatyna
Źródło:
Engineering of Biomaterials; 2020, 23, 158 spec. iss.; 8
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New composites based on bacterial nanocellulose and collagen
Autorzy:
Sionkowska, Alina
Mężykowska, Oliwia
Saha, Nabanita
Powiązania:
https://bibliotekanauki.pl/articles/285415.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Źródło:
Engineering of Biomaterials; 2019, 22, no.153; 32
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modification of chitosan films with fish skin collagen
Autorzy:
Sionkowska, Alina
Musiał, Katarzyna
Gadomska, Magdalena
Adamiak, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1844754.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Źródło:
Engineering of Biomaterials; 2021, 24, 163; 90
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modern dressing and cosmetic materials based on hyaluronic acid modified with Egg albumin
Autorzy:
Gadomska, Magdalena
Musiał, Katarzyna
Sionkowska, Alina
Powiązania:
https://bibliotekanauki.pl/articles/1844740.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Źródło:
Engineering of Biomaterials; 2021, 24, 163; 89
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Materials based on chitosan enriched with zinc nanoparticles for potential applications on the skin
Autorzy:
Kulka, Karolina
Szmejkowska, Andżelika
Sionkowska, Alina
Wypij, Magdalena
Golińska, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/27324035.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
chitosan
zinc oxide nanoparticles
polymer films
antimicrobial activity
chitozan
biomateriały
biodegradowalność
Opis:
Chitosan as a nontoxic, biodegradable, and biocompatible biopolymer with film-forming properties can also be modified to improve its parameters. Modification of polymer films by the addition of nanoparticles is an increasingly common solution due to the higher efficiency of products at the nanoscale compared to the macroscale. In this work, thin chitosan films enriched with biogenic zinc oxide nanoparticles (ZnONPs) from Fusarium solani IOR 825 were obtained by the solvent evaporation method. The influence of nanoadditive on the physicochemical, mechanical, and antimicrobial properties of the polymeric matrix was evaluated. Two different concentrations of ZnONPs were added to the chitosan solution. Spectrometric measurements, mechanical tests, microscopic imaging, and microbiological tests were performed for nanoparticlesmodified and control samples. Analysis revealed that ZnONPs influence the properties of chitosan films. FTIR spectroscopy showed changes that are the result of interactions between polymer matrix and the additive. Modified samples were characterized by increased values of Young’s modulus and tensile strength. SEM analysis combined with energy-dispersive X-ray spectrometry confirmed the presence of zinc in the modified films. The addition of nanoparticles slightly affected the surface morphology of the tested samples, and an increase in roughness was observed. Microbiological tests showed the biostatic activity of the films containing ZnONPs. The obtained films based on chitosan with the addition of ZnONPs can be considered easy-to-obtain biomaterials with potential use as cosmetic and biomedical products.
Źródło:
Engineering of Biomaterials; 2022, 25, 167; 24--31
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the intermolecular interaction on physico-chemical properties of chitosan/hyaluronic acid blends
Autorzy:
Lewandowska, Katarzyna
Sionkowska, Alina
Grabska, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/1034820.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
AFM microscopy
chitosan
hyaluronic acid
polymer blends
viscosity interaction parameters
Opis:
In the present study, the results of viscosity measurements in dilute solutions of chitosan (Ch) with hyaluronic acid (HA) are presented. Chitosan is blended with hyaluronic acid in aqueous 0.1M CH3COOH/0.2M NaCl and 0.3M NaCl respectively, or with the addition of HEPES. Viscosity measurements of dilute polymer solution were carried out in an Ubbelohde capillary viscometer. The intrinsic viscosity, [], and the viscosity interaction parameters, bm, have been determined for the binary (solvent/polymer) and ternary (solvent/polymer A/polymer B) systems. The homogeneity and morphology of chitosan blends were ascertained from the tapping-mode atomic force microscopy. The surface roughness of chitosan, hyaluronic acid and Ch/HA blended films was altered by mixing. The obtained results suggested that there was existence of the strong interactions between chitosan and hyaluronic acid.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2015, 20; 170-176
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fish collagen and chitosan mixtures as a promising biomaterial for potential use in medicine and cosmetic industry
Autorzy:
Sionkowska, Alina
Musiał, Katarzyna
Gadomska, Magdalena
Adamiak, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2232170.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
collagen
chitosan
blends
medicine
cosmetics
Opis:
For the last three decades, an increasing interest in new materials based on blends of two or more polymers has been observed. Fish skin collagen and chitosan are constantly highly popular among scientists. This study aimed to obtain thin films from mixtures of low and medium molecular weight chitosan with fish collagen in three different ratios and examine their features for potential use in medicine and cosmetic industry. Polymer blends in ratios 25:75, 50:50, and 75:25 were made to obtain thin films. The infrared spectroscopy, mechanical properties study, contact angle measurements, topographic imaging, and swelling test were used to characterize the features of the films. A statistical appraisal of the results was conducted with the Q-Dixon’s test. The infrared spectroscopy analysis showed that in the IR spectra of the examined biomaterials, there are shifts in the bands positions proving intermolecular interactions between collagen and chitosan in the blends. The mechanical properties in the mixtures were different from those of a single biopolymer film. Hydrophilicity and polarity of the blends decrease with the increasing collagen content, which may suggest that the adhesion to the skin will be enhanced. The surface topography of the obtained films varies depending on the ratio of biopolymers in the mixtures. The swelling tests indicated that chitosan absorbs more water than collagen. The properties of the films made of collagen-chitosan mixtures vary depending on the molecular weight of chitosan and the content of each biopolymer in the blend.
Źródło:
Engineering of Biomaterials; 2022, 25, 164; 16--24
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Composites based on polyvinyl alcohol, chitosan, and curcumin for wound healing applications
Autorzy:
Tahir, Muhammad
Vicini, Silvia
Sionkowska, Alina
Powiązania:
https://bibliotekanauki.pl/articles/27324034.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
polyvinyl alcohol
chitosan
curcumin
polymer
blends
wound healing
chitozan
polimery
biomateriały
Opis:
Natural polymers, like chitosan, collagen, and alginate, offer promising solutions for wound healing. Derived from natural sources, they exhibit biocompatibility and bioactivity, promoting tissue regeneration. These polymers can form scaffolds or dressings that accelerate wound closure while reducing infection risks. Their inherent properties make them promising options in the quest for effective wound care materials. In this work, composites based on polyvinyl alcohol (PVA), chitosan (Chi), and curcumin (Cur) were prepared. PVA, a synthetic water-soluble polymer, finds extensive use in biomedical and wound-healing applications. It is approved by the U.S. FDA for cosmetic, medical, and wound healing products. Chi, a polysaccharide, is widely used in biomedicine and possesses antibacterial properties. Both PVA and chitosan are biocompatible and exhibit good filming characteristics. Curcumin (Cur) with antibacterial and antioxidant properties is being explored for regenerative medicine. PVA, chitosan, and curcumin were blended. The structure was studied by FTIR, microscopic observations were done with optical and scanning electron microscopes, and the mechanical properties were assessed. FTIR revealed component interactions, while microscopy showed a flat film surface. The polymeric blend (PVA/Chi/Cur) had a Young’s modulus of 1.49 GPa, tensile strength of 47.69 MPa, stress value of 8.39 N, and 35.34% elongation at break. These properties make the blend suitable for consideration in wound healing applications.
Źródło:
Engineering of Biomaterials; 2022, 25, 167; 10--16
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 21

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