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

Abstract

The research on polylactide has been trending over the past 10 years as it is a versatile biopolymer which finds applications in food packaging and medical industries. In this research, nano aluminium oxide and nano cupric oxide have been impregnated into polylactide matrix using sonication and the nano composite thin films were prepared using solution casting technique. The thermal characterization of the neat and doped polymer films were conducted using thermogravimetric analysis and differential scanning calorimetry. the addition of nano aluminium oxide and nano cupric oxide increased the glass transition temperature and melting temperature of the samples in comparison with neat polylactide. Degree of crystallinity of all the doped samples increased with respect to the neat sample except for the sample doped with 1 mg nano aluminium oxide. The I-V characterization of the neat and doped samples revealed that addition of the nano powders reduced the resistivity of PLA by 35-45%. These results recommend the use of polylactide doped with nano aluminium oxide and nano cupric oxide as a potential semiconducting polymeric materials.

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

“…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. At Stage 2, we notice that neat PLA material showed an exothermic trough at temperatures of 140-160 • C which revealed a less similar trend from works by Abdul et al [66] and Tabi et al [67]. Although their range showed an earlier curve at 80 • C, the difference can be attributed to the fact that the membrane used was moist and that there was possible contamination.…”

Effect of Bentonite on the Electrical Properties of a Polylactide-Based Nanocomposite

“…Despite the fact that most of these studies concern the use of highly conductive nanoparticles (NP), based on carbon [37][38][39][40][41][42] or silver [43,44], attempts are being made to use less obvious fillers. Mujeeb et al [45] used a solution casting method of prepared nanocomposites based on polylactide and aluminum oxide nanoparticles. Their studies showed a 35-45% reduction in resistivity of PLA.…”

Three-Dimensional Printed Polyamide 12 (PA12) and Polylactic Acid (PLA) Alumina (Al2O3) Nanocomposites with Significantly Enhanced Tensile, Flexural, and Impact Properties

“…Research in nanocomposites of PLA with alumina is focused on the thermal and electrical properties of the composites [ 61 ], but not on 3D printing as a manufacturing process. PLA in fiber form has also been used for the preparation of composites with alumina, employing the electrospinning process [ 62 ].…”