Temat: Nanocomposite - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Examining the surface of the polyamide nanocomposite using optical profilometry
Autorzy:: Majka, M.
Majka, T. M.
Powiązania:: https://bibliotekanauki.pl/articles/134899.pdf
Data publikacji:: 2014
Wydawca:: Tomasz Mariusz Majka
Tematy:: polyamide nanocomposite
montmorillonite
optical profilometry
Fourier transform image
Opis:: In this paper the results of neat polyamide 6 (PA6), processed matrix and polyamide 6 reinforced with montmorillonite 3 wt% (PA6/MMT), surface examination are presented. Examination of surface of the samples was performed using optical profilometry, which allows to measure their physical properties in non-invasive method. Based on the analysis of the radiation intensity of the reflected light from the surface the Fourier Transform was performed, to allow the analysis of images obtained in the frequency domain.
Źródło:: Journal of Education and Technical Sciences; 2014, 1, 1; 8-9
2300-7419
2392-036X
Pojawia się w:: Journal of Education and Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The graphic presentation of a structure of a nanofiller for polymeric composites
Graficzna charakteryzacja struktury nanonapełniacza stosowanego w kompozytach polimerowych
Autorzy:: Garbarski, J.
Fabijański, M.
Jóźwiak, K.
Powiązania:: https://bibliotekanauki.pl/articles/951469.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: polymer composite
nanocomposite
montmorillonite
kompozyt polimerowy
nanokompozyt
montmorylonit
Opis:: Not all kinds of polymeric composites which are not traditional GRPs deserve to be called nanocomposites. In this paper, among others, this question is discussed, based on the structure of the most popular nanofiller called montmorillonite, which is extracted from a certain kind of clay. It is shown what factors determine obtaining a material which can be regarded as a nanocomposite and when it is only a microcomposite. The basic terminology (packets, gallery etc.) concerning the raw montmorillonite is thoroughly explained as well as the behaviour of this filler when building up a nanocomposite. Also the methods of changing the mode of the nanofiller from hydrophilic to organophilic, as a result of high cation exchange capacity (CEC), are shown. The conditions of the delamination and intercalation phenomena being the result of polymer-nanofiller interaction are discussed as well as the method of small angle x-ray scattering (SAXS) which enables to determine which of the above phenomena (if any) has taken place.
W pracy przedstawiono klasyfikację kompozytów o osnowie polimerowej GRP ze szczególnym uwzględnieniem grupy nanokompozytów. Przeprowadzono dyskusję tego zagadnienia. Przyjęto do analizy popularny nanonapełniacz – montmorylonit, wytwarzany z pewnego rodzaju gliny. Ustalono czynniki determinujące wytwarzanie kompozytu oraz określono kryteria do uznania go za nano- lub mikrokompozyt. Podano podstawową terminologię (pakiety, galerie itp.) cechującą charakterystykę surowego montmorylonitu, jak również jego zachowanie się podczas tworzenia struktury nanokompozytu. Przedstawiono proces zmiany charakteru nanonapełniacza z hydrofilowego na organofilowy na podstawie zdolności wymiany kationów (CEC). Określono warunki delaminacji i interkalacji – rezultat wzajemnego oddziaływania polimer – nanonapełniacz. Omówiono również metodę małokątowego rozpraszania promieni rentgenowskich (SAXS) stosowaną do charakterystyki przedstawionych zjawisk.
Źródło:: Advances in Manufacturing Science and Technology; 2013, 37, 3; 93-109
0137-4478
Pojawia się w:: Advances in Manufacturing Science and Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Mechanical buckling of functionally graded polyethylene/clay nanocomposites columns based on the Engesser-Timoshenko beam theory
Autorzy:: Yas, M. H.
Khorramabadi, M. K.
Powiązania:: https://bibliotekanauki.pl/articles/949299.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: mechanical buckling
functionally graded nanocomposite
montmorillonite
genetic algorithm theory
Opis:: This paper deals with mechanical buckling of polyethylene/clay nanocomposite beams of functionally graded and uniformly distributed of nanoclay subjected to axial compressive load with simply supported conditions at both ends. The Young moduli of functionally graded and uniformly distributed nanocomposites are calculated using a genetic algorithm procedure and then compared with experimental results. The formulation is modiﬁed to include the eﬀect of nanoparticles weight fractions in the calculation of the Young modulus for uniform distribution. Also, it is modiﬁed to take into account the Young modulus as a function of the thickness coordinate. The displacement ﬁeld of the beam is assumed based on the Engesser-Timoshenko beam theory. Applying the Hamilton principle, governing equations are derived. The inﬂuence of nanoparticles on the buckling load of the beam is presented. To investigate the accuracy of the present analysis, a compression study with the experimental results is carried out.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 701-712
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The wettability, mechanical and antimicrobial properties of polylactide/montmorillonite nanocomposite films
Autorzy:: Rapacz-Kmita, A.
Pierchała, M. K.
Tomas-Trybuś, A.
Szaraniec, B.
Karwot, J.
Powiązania:: https://bibliotekanauki.pl/articles/307050.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: montmorylonity
nanokompozyty
właściwości antybakteryjne
właściwości mechaniczne
montmorillonite
nanocomposite films
antibacterial properties
mechanical properties
Opis:: The aim of this study was to evaluate the effect of the not activated (unmodified) montmorillonite (MMT) filler on the antibacterial properties of polymer nanocomposites with a biodegradable polylactide (PLA) matrix. The subject of research was selected to verify the reports on the lack of antibacterial properties of unmodified montmorillonite in nanocomposites and to investigate the potential condition of their manufacturing which are decisive for the resulting properties. Evaluation of antibacterial and mechanical properties of both the starting materials and the obtained nanocomposites filled with layered silicates, as well as the wettability of the materials measured by a sitting drop method, was made on samples in the form of a film. The results show that the surface wettability of the polymer nanocomposites did not exhibit significant change compared to the film of neat PLA. However, a significant improvement in the mechanical and antimicrobial properties of the nanocomposite films obtained in a specific solvent casting process of the nanocomposite preceded by exfoliation of the film in an ultrasonic homogenizer was demonstrated. The antibacterial activity against Gram-positive bacteria Staphylococcus aureus and Enterococcus faecalis was also observed, and moreover, the montmorillonite-containing films revealed a zone of inhibition of bacterial growth when tested against the lactose-positive bacteria of the Enterobacteriaceae family, which are present in the waste water. The advantageous properties of the obtained PLA/MMT nanocomposites suggest, that the unmodified montmorillonite may be potentially used as filler for polymer films in the packaging industry.
Źródło:: Acta of Bioengineering and Biomechanics; 2017, 19, 4; 25-33
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Nanocomposites Based on Polyamide and Montmorillonite Obtained from a Solution
Autorzy:: Krasinskyi, Volodymyr
Suberlyak, Oleh
Kochubei, Viktoria
Jachowicz, Tomasz
Dulebova, Ludmila
Zemke, Viktoria
Powiązania:: https://bibliotekanauki.pl/articles/101953.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: polyamide
montmorillonite
polyvinylpyrrolidone
nanocomposite
modification in solution
structure
poliamid
montmorylonit
poliwinylopirolidon
nanokompozyt
modyfikacja w roztworze
struktura
Opis:: This work deals with the development of a method for obtaining polyamide and montmorillonite based nanocomposite, which was modified with polyvinylpyrrolidone by mixing in a formic acid solution. The structure and thermophysical properties of the obtained nanocomposites were investigated by means of the X-ray, differentialthermal, thermogravimetric and IR spectroscopic analyses. It was found that nanomodified polycaproamide has a higher crystallinity and higher thermal stability than the original PA-6, and is characterized by considerably higher melt fluidity. The presence of polyvinylpyrrolidone and exfoliated montmorillonite in the nanocomposite structure was confirmed experimentally.
Źródło:: Advances in Science and Technology. Research Journal; 2020, 14, 3; 192-198
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Effect of small additives of polyamide modified by polyvinylpyrrolidone and montmorillonite on polypropylene technological properties and heat resistance
Autorzy:: Krasinskyi, Volodymyr
Suberlyak, Oleh
Kochubei, Viktoria
Klym, Yurii
Zemke, Viktoria
Jachowicz, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/102461.pdf
Data publikacji:: 2018
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: polypropylene
polyamide
montmorillonite
polyvinylpyrrolidone
mixture
nanocomposite
modification
thermal analysis
polipropylen
poliamid
montmorylonit
poliwinylopirolidon
mieszanina
nanokompozyt
modyfikacja
analiza termiczna
Opis:: The effect of small polyamide additives modified with polyvinylpyrrolidone and montmorillonite on polypropylene technological properties and heat resistance has been researched in the work. It has been determined that the melt flow index of the obtained composites increases by more than 2 times in comparing with pure PP. It has been shown that adding a small amount of polyamide modified by montmorillonite-polyvinylprolidone mixture to polypropylene significantly increases heat resistance of the material. The displacement of the beginning of thermal-oxidation destruction and burning samples into the range of higher temperatures on 114-123oC, dependently on the modified polyamide content has been observed.
Źródło:: Advances in Science and Technology. Research Journal; 2018, 12, 2; 83-88
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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