Potato starch foam trays based on blends of poly(vinyl alcohol) and corn fibers (CFs), co-product of the corn-wheat wet-milling process, are prepared by baking the blended mixtures in a preheated mold. Materials are evaluated for processing parameters, foam strength, flexibility, and water resistance as a function of fibers content. Addition of CF in formulations improved not only moisture resistance of foam, but has a potential to lower the overall cost of the foamed materials substantially. Interestingly, addition of up to 45% fiber in formulations was possible without compromising the foaming process. Degradability is evaluated both in compost than simulating a disposal in the environment (soil burying and soil surface). Trays are biodegraded within 30-60 days in compost and soil. Particularly, trays containing starch and fiber degraded at much faster rates than trays prepared using starch without natural fillers.
|Autori:||Chiellini, Emo; Cinelli, P; ILIEVA V., I; Imam, S. H; Lawton, J. W.|
|Titolo:||Environmentally Compatible Foamed Articles Containing Potato Starch, Corn Fiber and Poly(Vinyl Alcohol)|
|Anno del prodotto:||2009|
|Digital Object Identifier (DOI):||10.1177/0021955X08099932|
|Appare nelle tipologie:||1.1 Articolo in rivista|