期刊
POLYMERS
卷 13, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/polym13040655
关键词
PLA nanocomposites; extrusion; DMA; Raman; FT-IR; graphene; ionic liquids
资金
- Spanish Ministerio de Ciencia e Innovacion, Agencia Estatal de Investigacion (AEI) [MAT2017-85130-P]
- European Union FEDER Program [MAT2017-85130-P]
- Region de Murcia, de la Fundacion Seneca, Agencia de Ciencia y Tecnologia de la Region de Murcia [19877/GERM/15]
- [PRE2018-083774]
PLA-based nanocomposites were prepared using twin-screw extrusion with GO and IL as additives. Characterization through various tests showed that IL acted as an internal lubricant increasing PLA chain mobility, while the combination of GO and IL greatly improved the processability of PLA, especially at high temperatures.
Polylactic acid (PLA)-based nanocomposites were prepared by twin-screw extrusion. Graphene oxide (GO) and an ionic liquid (IL) were used as additives separately and simultaneously. The characterization of the samples was carried out by means of Fourier transform infrared (FT-IR) and Raman spectroscopies, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The viscoelastic behavior was determined using dynamic mechanical analysis (DMA) and rheological measurements. IL acted as internal lubricant increasing the mobility of PLA chains in the solid and rubbery states; however, the effect was less dominant when the composites were melted. When GO and IL were included, the viscosity of the nanocomposites at high temperatures presented a quasi-Newtonian behavior and, therefore, the processability of PLA was highly improved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据