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Wyszukujesz frazę "Janus, Ewa" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Efekty synergiczne i antagonistyczne między biosurfakantami z grupy soforolipidów i alkilopoliglikozydów o zróżnicowanej długości łańcucha alkilowego oraz ich wykorzystanie w projektowaniu środków myjących dla przemysłu spożywczego
Synergistic and antagonistic effects between biosurfactants from the group of soforolipids and alkylopolyglikosides of various alkyl chain lenghts and their use in the design of cleaning agents for the food industry
Autorzy:
Jędrzejczyk, Anna
Pełech, Robert
Janus, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2200420.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
biosurfaktanty
soforolipidy
alkilopoliglikozydy
działanie synergistyczne
działanie antagonistyczne
biosurfactants
sophorolipids
alkyl polyglycosides
synergistic effects
antagonistic effects
Opis:
The paper presents the results of testing the performance parameters of mixtures of biosurfactants from the group of sophorolipids and alkylpolyglycosides with different alkyl chain lengths. In order to determine the synergistic and antagonistic effects in two-component surfactant systems, research was carried out to determine the performance parameters determining their use in washing preparations, such as foam height (FH) and foam stability (FS) and wetting angle analysis (CA). The results are presented in tables 3, 4 and 5. Determination of the content of the active substance in the raw material samples was carried out using the method of refractometric determination of the refractive index. Both synergistic and antagonistic effects were found. On the basis of the obtained test results, the highest synergistic effect of performance parameters was obtained for the mixture of biosurfactants from the group of sophorolipids and the alkylpolyglycoside D-glucopyranose, oligomer, C10-16-alkylglycosides. In this case, the synergy occurred for all performance parameters FH (14%), FS (28%) and CA (46%). The synergistic effects were used to design a concentrated formulation of a cleaning agent in the food industry. The planned experiment method was used in order to obtain an optimal solution in terms of ensuring the appropriate level of cleaning efficiency. A twenty-two-point experiment plan was developed based on the Scheff model in order to optimize the composition in terms of obtaining the operational parameters of the mixture constituting the formulation's framework assumed in the optimization criteria. Optimization criteria were determined on the basis of studies of commercially available analogues. Thanks to the use of formulations of raw materials exhibiting synergistic effects in the design of the frame, the foam height and stability higher than those specified in the optimization criteria were obtained.
Źródło:
Wiadomości Chemiczne; 2023, 77, 3-4; 179--200
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epoksydowane oleje roślinne : zastosowanie w nowoczesnych materiałach polimerowych
Epoxidized plant oils : application in the novel polymer materials
Autorzy:
Janus, Ewa
Musik, Marlena
Wilpiszewska, Katarzyna
Sałaciński, Łukasz
Milchert, Eugeniusz
Powiązania:
https://bibliotekanauki.pl/articles/1853735.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
epoksydowane oleje roślinne
biokompozyty
biożywica epoksydowa
poliole
poliuretany
cykliczne węglany
epoxidized plant oil
biocomposites
bio-based epoxy resin
polyols
polyurethanes
cyclic carbonates
Opis:
The growing, global concern for the natural environment contributes to the intensive research on at least partial replacing of petroleum-based raw materials with bio-renewable resources on an industrial scale. The chemical composition and oligomeric nature of plant oils make them a promising bio-renewable base for development of new polymer materials. The conversion of plant oils and fats to epoxidized plant oils (EO) and polyols are the processes intensively studied. Epoxides based on soybean oil, i.e. one of the most easily available vegetable oils, have a high potential for polymeric materials preparation. In addition, linseed and castor oils are of great importance in this area as well. This article presents the latest achievements in the production of novel polymer materials based on epoxidized vegetable oils and their derivatives. The importance and application of EO for polymer materials should be considered multidirectional. Epoxidized plant oils are the platform chemicals for polyethers, polyesters, polyurethanes and polyhydroxyurethanes, but also can act as modifiers for natural and synthetic polymers. Polymers based on epoxidized vegetable oils in combination with filler – including more and more popular natural fibers, allow to obtain biocomposites. Applying bioresin and natural reinforcement reduces the carbon footprint. Moreover, such materials may exhibit competitive properties against petrochemical polymer products and meet the requirements of the automotive, packaging, furniture, and construction industries. Additionally, obtaining materials showing functional properties, including shape memory and self-healing ability is also possible.
Źródło:
Wiadomości Chemiczne; 2021, 75, 9-10; 1395-1411
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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