Masmoudi Fatma, Bessadok Atef, Dammak Mohamed, Jaziri Mohamed, Ammar Emna
Research Unit Urban and Coastal Environments, National Engineering School of Sfax, BP 1173, 3038, Sfax, Tunisia.
Packaging Technical Centre (PACKTEC), Tunis, Tunisia.
Environ Sci Pollut Res Int. 2016 Oct;23(20):20904-20914. doi: 10.1007/s11356-016-7276-y. Epub 2016 Aug 3.
The plastic materials used for packaging are increasing leading to a considerable amount of undegradable solid wastes. This work deals with the reduction of conventional plastics waste and the natural resources preservation by using cellulosic polymers from renewable resources (alfa and luffa). Plasticized starch films syntheses were achieved at a laboratory scale. These natural films showed some very attractive mechanical properties at relatively low plasticizers levels (12 to 17 % by weight). Furthermore, mixtures including polylactic acid polymer (PLA) and cellulose fibers extracted from alfa and luffa were investigated by melt extrusion technique. When used at a rate of 10 %, these fibers improved the mixture mechanical properties. Both developed materials were biodegradable, but the plasticized starch exhibited a faster biodegradation kinetic compared to the PLA/cellulose fibers. These new materials would contribute to a sustainable development and a waste reduction.
用于包装的塑料材料不断增加，导致产生大量不可降解的固体废物。这项工作致力于通过使用可再生资源（阿尔法草和丝瓜）中的纤维素聚合物来减少传统塑料废物并保护自然资源。在实验室规模下实现了增塑淀粉薄膜的合成。这些天然薄膜在相对较低的增塑剂水平（重量百分比为12%至17%）下表现出一些非常有吸引力的机械性能。此外，通过熔融挤出技术研究了包括聚乳酸聚合物（PLA）和从阿尔法草和丝瓜中提取的纤维素纤维的混合物。当以10%的比例使用时，这些纤维改善了混合物的机械性能。两种开发的材料都是可生物降解的，但与PLA/纤维素纤维相比，增塑淀粉表现出更快的生物降解动力学。这些新材料将有助于可持续发展和减少废物。
