How to combine a hydrophobic matrix and a hydrophilic filler without adding a compatibilizer - Co-grinding enhances use properties of Renewable PLA-starch composites

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• 作者：Nadine Le Bolay^a ; ^{nadine.lebolay@ensiacet.fr} ; Alain Lamure^b ; Nora Gallego Leis^b ; Arfan Subhani^b
• 关键词：Poly(lactic acid) ; Starch ; Grinding ; Composites ; Properties
• 刊名：Chemical Engineering and Processing
• 出版年：2012
• 期刊代码：15_02552701
• 类别：ce
• 出版时间：June, 2012
• 卷：56
• 期：Complete
• 页码：1-9
• 文件大小：1792 K

摘要

In order to avoid the use of compatibilizers or plasticizers, co-grinding was performed to produce PLA-starch composite materials. Fragmentation and agglomeration phenomena were analysed to propose a production mechanism. Co-grinding enhances dispersion of the filler in the matrix and interactions between the materials. Consequently while blending the two materials has a negative effect on mechanical properties, co-grinding permits to improve them if optimized operating conditions are applied. Water uptake and diffusion are also controlled by co-grinding conditions. This treatment allows the production of composite materials offering good use properties without any use of a compatibilizer or a plasticizer.