Physical, Mechanical, and Thermal Analysis of Polylactic Acid/Fumed Silica/Clay (1.28E) Nanocomposites

Abstract

Polylactic acid/fumed silica/clay (PLA/FS/clay) (1.28E) nanocomposites have been successfully prepared by solution-intercalation film-casting technique. The resultant nanocomposites were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), tensile test, thermogravimetric analysis (TGA), and moisture absorption test. The FT-IR spectrum indicated that PLA/FS/clay with 2 wt% had much broader peak compared to 5 wt%, 10 wt%, and 15 wt% nanocomposites. Incorporation of clay (1.28E) with 2 wt% showed the best compatibility with PLA/FS matrix. PLA/FS/clay (1.28E) nanocomposite with 2 wt% of clay loading had higher tensile strength and modulus compared to other nanocomposites. The thermal stability and activation energy of 2 wt% of PLA/FS/clay (1.28E) nanocomposite are the highest among all the nanocomposites. The moisture absorbed into PLA/FS/clay (1.28E) nanocomposite was significantly reduced with clay loading of 2 wt%.

An Experimental Study on the Thermal Properties and Electrical Properties of Polylactide Doped with Nano Aluminium Oxide and Nano Cupric Oxide

“…Better results were obtained for unmodified sepiolite in contrast to the organically modified sepiolite (Liu et al 2012). A DSC study on PLA-fumed silica (FS)-clay nano composite revealed that addition of 2 wt% clay to PLA FS composite increased the thermal stability and reduced the moisture weight percentage (Lai et al 2015).…”

Composite of PLA Nanofiber and Hexadecyl Trimethyl-Ammonium Chloride-Modified Montmorillonite Clay: Fabrication and Morphology

“…Similarly, PLA/CTAC-MMT 0.5 wt.% and PLA/O_MMT 1.0 wt.% composites showed a rise in tensile strength by 36% and 44%, correspondingly. The rise in the tensile strength of PLA can be ascribed to the interactions developed between the surface silanol groups and PLA chains [64,65]. 10 that all samples show a transition peak in the temperature range of 50-60 • C (Stage 1), which is related to the glass transition of the PLA and PLA/CTAC-MMT composites.…”

Preparation and characterization of nanocomposites based on polylactide manufactured by reactive extrusion-calendering : thermal, rheological, mechanical and fracture properties

“…However, Ogata et al (1997) Likewise, a lot of publications have been widely reported on PLA/silica nanocomposites preparation and properties (Basilissi et al, 2013a;Chang et al, 2015;Dorigato et al, 2012;Fukushima et al, 2011;Gong et al, 2014;Lai and Hsieh, 2016;Murariu et al, 2015;Pilić et al, 2015;Wang et al, 2006;Wang et al, 2008a;Wen et al, 2009;Wen et al, 2011;Yan et al, 2007b;Zhang et al, 2008a;Zhu et al, 2010). For instance, Yan et al (2007b) initially prepared nanosilica grafted with lactic acid prior to the modified silica being melt blended with PLA matrix to enhance the interfacial interactions.…”