Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: oxo-biodegradable polymers

Sortuj według:

Ogranicz wyniki do:

Biodegradable Package – Innovative Purpose or Source of the Problem

Markowicz Florentyna, Król Grzegorz, Szymańska-Pulikowska Agata

Journal of Ecological Engineering

2019

Vol. 20, nr 1

228--237

Neutralization of the amount of plastic packaging waste from year to year is becoming an increasingly serious problem. Replacing some of them with the products made of biodegradable and oxo-biodegradable polymers, which may be broken down in the environment in a shorter time seems to be one solution. Polymers are used both for the production of bags for biodegradable waste, as well as shopping bags, labeled by the producers as “compostable”, “biodegradable”, etc. Therefore, they are often used to collect bio-waste, with which they go to the installations intended for their processing, e.g. composting plant. However, contrary to the information on the package, not all are decomposed under the conditions prevailing in composting plants. The aim of this study was to assess the degree of decomposition of selected package from biodegradable and oxo-biodegradable polymers under the actual conditions of an industrial composting plants and the possibility of contamination of the product (compost) with components originating from, among others from the additives that improve the properties of plastics and dyes. The conducted research has shown that many bags and sacks available in retail chains, contrary to the information provided, are not completely degraded in industrial composting plants, and may also become a source of heavy metal pollution.

Kompozyty z folii oksybiodegradowalnej z recyklingu napełniane drewnem

Ryszkowska J., Sałasińska K.

Polimery

2010

T. 55, nr 10

740-747

Wytworzono kompozyty polimerowo-drzewne (WPC) na podstawie oksybiodegradowalnego polietylenu (PE-HD) pochodzącego z recyklingu i zawierającego l % dodatku pro-degradanta (d2w) oraz mączki drzewnej o stałych parametrach w ilości 32 % mas. Następnie poddano je analizie obejmującej badania wykonywane zazwyczaj w przypadku tworzyw polimerowych oraz badania zgodne z zaleceniami Unii Europejskiej a dotyczące kompozytów polimerowo-drzewnych. Określano, m.in. gęstość, zawartość wilgoci, ciepło spalania, zapalność, odporność na przyspieszone starzenie i właściwości mechaniczne. Analiza miała na celu ustalenie, czy materiały WPC wykonane z tworzyw oksybiodegradowalnych i drewna mają właściwości pozwalające na ich dalszą aplikację oraz czy stanowią materiał konkurencyjny dla tradycyjnych tworzyw polimerowych.

Wood-polymer composites (WPC) have been derived on the basis of oxo-biodegradable polyethylene (PE-HD) from recycling containing 1 % d2w and wood flour with stable parameters up to the amount of 32 wt. %. The properties of the obtained composites were characterized according to EU standard procedures regarding polymer-wood composites. The density, moisture content, combustion heat, flammability (Table 2, Figs. 3, 5-7), resistance to accelerated ageing (Table 1, Fig. 4) and mechanical properties were determined. The analysis were performed for the purpose of determining whether the obtained WPC materials obtained from oxo-biodegradable polymers and wood possess the properties making them suitable for further applications as alternatives for traditional virgin polymers.