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Impact of nanosilver and nanocopper on antifungal properties of plastic elements in the aspect of their use in agri-food processing

Jałbrzykowski M., Leszczyńska K., Obidziński S., Minarowski Ł., Laabs M.

Agricultural Engineering

2018

Vol. 22, No. 1

49--59

The paper presents results of microbiological research of plastic elements. Plastic elements were made of the polystyrene composition with addition of nanosilver and nanocopper with a laboratory extruder EHP 25ELine. Microbiological research was carried with regard to evaluation of antifungal impact of nanoadditives according to international standards with Cryobank (Mast Diagnostica). A positive impact of nanoadditives on antifungal properties of polystyrene elements produced by means of extrusion which is very favourable in the aspect of their use in agri-food processing.

W pracy przedstawiono wyniki badań mikrobiologicznych detali z tworzyw sztucznych. Detale tworzywowe wykonano, jako kompozycję polistyrenu (PS) z zawartością dodatków nanosrebra i nanomiedzi, za pomocą laboratoryjnej wytłaczarki EHP 25ELine. Badania mikrobiologiczne prowadzono w kierunku oceny antygrzybiczych oddziaływań nanododatków według międzynarodowych standardów stosując Cryobank (Mast Diagnostica). Stwierdzono korzystny wpływ nanododatków na antygrzybicze właściwości detali z polistyrenu wytwarzanych metodą wytłaczania, co jest bardzo korzystne w aspekcie ich zastosowania w przetwórstwie rolno-spożywczym.

Preparation of polymer materials containing titanium compounds

Drabczyk A., Kudłacik-Kramarczyk S., Tyliszczak B.

Infrastruktura i Ekologia Terenów Wiejskich

2017

nr IV/2

1659--1672

Titanium compounds in view of their physicochemical properties constitute interesting materials applied in chemical synthesis. They are used for preparation of antifungal agents as well as for production of self-cleaning coatings. Moreover, mentioned inorganic compounds are characterized by a capability of neutralizing of unpleasant odor. Those all characteristics make these substances useful in many fields. In the framework of presented research series of polymer materials modified with titanium and titanium oxide have been obtained by means of photopolymerization. In the further step, studies on such synthesized materials have been conducted with particular emphasis on determining a mechanical properties and wettability. Hardness of prepared polymers have been tested by means of Shore durometer. Based on the research it can be concluded that addition of titanium compounds to the polymer matrix resulted in the improvement of mechanical properties as well as in an increase of hydrophobicity. It is worth mentioning that it is possible to manipulate properties of the obtained compositions by the introduction of an appropriate amount of additive into their matrices.