Search results for "HDPE"
showing 4 items of 4 documents
Effect of nano zinc oxide as UV stabilizer on the weathering performance of wood-polyethylene composite
2016
Abstract In this study, the effect of using nano-sized zinc oxide (ZnO) particles on the enhancement if the degradation resistance of wood-high density polyethylene (HDPE) composite was investigated through artificial weathering. Samples with different amounts of ZnO mixing ratio (0, 1, 2, and 4 wt%) were manufactured using an internal mixer followed by compression molding. The prepared samples were then exposed to the artificial weathering process in a QUV weatherometer. The weathering behavior of samples was characterized using tensile strength, contact angle analysis, colorimetry, ATR-FTIR spectroscopy and FE-SEM. The results indicated that the amount of surfaces crack, tensile strength …
Resource or waste? A perspective of plastics degradation in soil with a focus on end-of-life options.
2018
‘Capable-of-being-shaped’ synthetic compounds are prevailing today over horn, bone, leather, wood, stone, metal, glass, or ceramic in products that were previously left to natural materials. Plastic is, in fact, economical, simple, adaptable, and waterproof. Also, it is durable and resilient to natural degradation (although microbial species capable of degrading plastics do exist). In becoming a waste, plastic accumulation adversely affects ecosystems. The majority of plastic debris pollutes waters, accumulating in oceans. And, the behaviour and the quantity of plastic, which has become waste, are rather well documented in the water, in fact. This review collects existing information on pla…
On the compatibilization of PET/HDPE blends through a new class of copolyesters
2000
Polyethyleneterephthalate (PET) and polyethylene are incompatible polymers and their blends show, in general, poor properties. Compatibilization is then a necessary step to obtain blends with good mechanical and barrier properties. In this work different compatibilizing agents were used, i.e. a maleic anhydride elastomer and some new products containing graft-copolymers having polyester segments grafted onto polyethylene backbone chains. Both the functionalized elastomer and the new products drastically improve the morphology and the ductility of the blend. In the case of the modified elastomer the compatibilizing action has been attributed to the formation of H-bonds whereas the copolymers…
Comportamento reologico di nanocompositi a base di miscele HDPE/PA6
2012
La preparazione di sistemi nanocompositi a base di miscele polimeriche suscita notevole interesse perché offre potenzialmente l’opportunità di combinare in maniera sinergica in un unico materiale diverse proprietà non possedute singolarmente da nessun polimero. In generale, le caratteristiche di questi sistemi polifasici dipendono certamente dalla natura dei costituenti, ma anche dalla morfologia finale del materiale: il controllo della dispersione e della dimensione delle particelle nonché dell’adesione interfacciale tra fasi (polimero/polimero, polimero/carica) costituiscono perciò parametri critici per il successo di questi materiali. Scopo di questo lavoro è stato valutare l’influenza d…