Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7891176 | Composites Part A: Applied Science and Manufacturing | 2016 | 8 Pages |
Abstract
Polylactide reinforced with 3Â wt% of organo-modified montmorillonite, 5Â wt% of stearic acid-modified calcium carbonate nanoparticles, 15Â wt% of cellulose fibers (PLA/MMT, PLA/NCC, PLA/CF) and hybrid composites containing 15Â wt% of fibers in addition to montmorillonite (PLA/MMT/CF) or calcium carbonate (PLA/NCC/CF) were prepared and examined. The nanoparticles were dispersed in polylactide almost homogeneously; montmorillonite was exfoliated during processing. Tg of polylactide remained unaffected but its cold crystallization was enhanced; the cold-crystallization behavior of the hybrid composites was dominated by nanofillers nucleating ability. The fibers and calcium carbonate decreased whereas exfoliated montmorillonite improved the thermal stability of the materials. Polylactide, PLA/NCC and PLA/MMT exhibited ability to plastic deformation, although the latter the weakest. Tensile behavior of the hybrid composites was strongly influenced by the fibers and similar to that of PLA/CF. All the fillers increased the storage modulus below Tg; that of PLA/MMT/CF and PLA/NCC/CF was improved with respect to polylactide by 50% and 45%, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
K. Piekarska, P. Sowinski, E. Piorkowska, Md.M.-Ul. Haque, M. Pracella,