The demand for an adoption of renewable resources rather than finitely available non renewable sources for industrial purposes are rising, with the growing environmental constraints. Polymers being one of the crucial part of almost all the industries, pioneer in the list of sources needed for various applications. This makes polymers that can be obtained from renewable sources being studied widely and are anticipated to make a revolution in the field of packaging industry, medical field, and automobile industry. Polylactic acid (PLA) is one among such biopolymers, which is an aliphatic polyester derived from lactic acid (2-hydroxypropionic acid), that find wide applications in food packaging industry, tissue scaffolding, and biomedical devices. This paper focuses on an in-depth review on polylactic acid, its structure, and various properties of PLA. The details of different polymer blends/composites based on PLA are also discussed here. The fields of applications, where PLA is being utilized and the future scopes of the polymer are also studied.

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Molybdenum disulphide (MoS 2 ) is a layered transitional metal dichalcogenide that exhibits unique properties when isolated into one or few layers. MoS 2 finds applications in electronics and optoelectronics, along with the ability to act as host materials to polymers. In this paper, we report the successful exfoliation and modification of MoS 2 with Lithium salt of 6 amino hexanoic acids (Li-AHA) in a mixed solvent of N-Methyl-2-Pyrrolidone (NMP) and deionized water. The X-ray diffraction studies showed reduction in size accompanied by increased strain, which indicates exfoliation. Photoluminescence was proved for the exfoliated sample using photoluminescence spectroscopy. The antimicrobial study results showed that the exfoliated MoS 2 had better zone of inhibition than pristine MoS 2 .

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