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PLA-Chitosan Composites as Sustainable Alternatives for Menstrual Pads
Summary
Researchers developed biodegradable PLA-chitosan composite films as an environmentally friendly alternative to polyethylene in menstrual pads, demonstrating that the composite maintained absorbency and mechanical integrity while offering antimicrobial properties and full biodegradability.
Polyethylene-based menstrual pads take centuries to biodegrade, contributing significant environmental waste while posing health risks for users. Fortunately, alternative polymers are available to replace polyethylene in menstrual pads. This research focuses on creating a composite of two promising polymers, Polylactic Acid (PLA) and Chitosan, as an alternative material to polyethylene-based menstrual pads. Both polymers are biodegradable and biocompatible, with chitosan being uniquely antimicrobial, presenting them as ideal materials for eco-friendly menstrual pads. The polymer blending technique, solvent blending, was utilized to mix PLA and Chitosan solutions in five different ratios. The solutions were placed into an air dryer for solvent evaporation, leaving behind thin film composites. A comprehensive analysis was conducted to assess the suitability of these materials through assessing its surface morphology, mechanical properties, water absorption, antimicrobial properties, and biodegradation. The findings demonstrated profound improvements in flexibility and tensile strength, water absorption, antimicrobial properties, and biodegradation. In comparison to polyethylene-based menstrual pads, this composite material can degrade in a few years, drastically improving the biodegradability period. These results offer valuable insights into the feasibility of PLA-chitosan composites for sustainable and health-conscious menstrual products. More importantly, a PLA-chitosan-based menstrual pad allows women to use a safer, eco-friendly product without concerns about health risks from synthetic materials.
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