The effect of crystallization of PLA on the thermal and mechanical properties of microfibrillated cellulose-reinforced PLA composites |
| |
| Authors: | Lisman Suryanegara Antonio Norio Nakagaito Hiroyuki Yano |
| |
| Affiliation: | 1. School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China;2. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China;1. Institute of Polymers and Composites/I3N, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal;2. Centre/Department of Chemistry University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal;3. Graphene and Nano-materials Research Center – Mackgraphe, Mackenzie Presbyterian University, São Paulo, Brazil;1. Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, Lodz 90-363, Poland;2. Department of Chemical Engineering and Materials Science, University of Pisa, Pisa 56122, Italy;3. Institute for Polymers, Composites and Biomaterials IPCB-CNR, Largo L. Lazzarino 2, Pisa 56122, Italy;1. Department of Chemistry and Biology, Rensselaer Polytechnic Institute (RPI), 4005B BioTechnology Bldg., 110 8th Street, Troy, NY 12180, USA;2. NYU Polytechnic School of Engineering, Six Metrotech Center, Brooklyn, NY 11201, USA;3. Centre d''Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, UMONS University of Mons, Place du Parc 20, B-7000 Mons, Belgium;4. PolyNew, Inc., Golden, CO 80401, USA;5. Department of Chemical and Biochemical Engineering, Colorado School of Mines, Golden, CO 80401, USA;6. Centre d''Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Nouveaux, UMONS, Place du Parc 20, B-7000 Mons, Belgium;1. Research Institute for Sustainable Humanosphere, Kyoto University, 611-0011 Uji-Kyoto, Japan;2. AgroParisTech, UMR 1092 LERFOB, 54000 Nancy, France;3. INRA, UMR 1092 LERFOB, 54280 Champenoux, France;4. Laboratory of Biocomposites, Research and Development Unit for Biomaterials, Indonesian Institute of Sciences, Jl. Raya Bogor KM. 46, Cibinong, Bogor 16911, Indonesia |
| |
| Abstract: | This paper describes the thermal and mechanical properties of nanocomposites based on polylactic acid (PLA) and microfibrillated cellulose (MFC). The primary objective of this study was to improve the storage modulus of PLA at a high temperature. MFC and PLA were mixed in an organic solvent with various fiber contents up to 20 wt%, followed by drying, kneading and hot pressing into sheets. The nanocomposites were prepared in two different states, fully amorphous and crystallized. Differential scanning calorimetry (DSC) measurements revealed that the presence of MFC accelerates the crystallization of PLA. The tensile modulus and strength of neat PLA were improved with an increase of MFC content in both amorphous and crystallized states. The addition of 20 wt% of MFC in PLA improved the storage modulus of crystallized PLA at a high temperature (120 °C) from 293 MPa to 1034 MPa. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
