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Bionanocomposites based on polysaccharides and fibrous clays for packaging applications

机译：基于多糖和纤维状粘土的Bionanocomposites用于包装应用

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The present paper reports the use of sepiolite and palygorskite fibrous clays as fillers to improve the mechanical and barrier properties of films based on neutral or negatively charged polysaccharides, such as hydroxypropylmethylcellulose, carboxymethylcellulose, alginate, pectin, and xanthan. The interaction established between the polysaccharide chains and the clay fibers, as well as the physicochemical characteristics of the resulting bionanocomposites are characterized by several techniques. These materials are processed as self-standing films that not only exhibit improved mechanical properties and water resistance, but also a significant barrier to UV light and reduced water absorption capacity, which make them very attractive for use in food packaging or coatings. Moreover, fibrous clays previously modified with the hydrophobic protein zein are also evaluated as fillers in alginate matrices, focusing on the improvement of water resistance, as well as of light and gas barrier properties, especially towards oxygen, which are of special interest for potential application in the food packaging sector. (C) 2015 Wiley Periodicals, Inc.
机译：本文报道了使用海泡石和坡缕石纤维粘土作为填料，以改善基于中性或带负电荷的多糖（如羟丙基甲基纤维素，羧甲基纤维素，藻酸盐，果胶和黄原胶）的薄膜的机械性能和阻隔性能。多糖链和粘土纤维之间建立的相互作用，以及所得到的生物纳米复合材料的理化特性通过几种技术来表征。这些材料被加工成自立式薄膜，不仅表现出改善的机械性能和耐水性，而且对紫外线具有显着的阻挡作用，并且吸水能力降低，这使其在食品包装或涂料中非常有吸引力。此外，先前用疏水蛋白玉米蛋白改性的纤维粘土也被评估为藻酸盐基质中的填料，着重于提高耐水性以及光和气体的阻隔性，尤其是对氧气的阻隔性，这对于潜在的应用具有特殊意义。在食品包装领域。 （C）2015年Wiley Periodicals，Inc.

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