Abstract
Curcumin incorporated poly(butylene adipate-co-terephthalate) (PBAT) based film was fabricated. Curcumin has uniformly distributed in the PBAT matrix to form a bright yellow PBAT/curcumin film. The PBAT/curcumin film has slightly reduced tensile strength and flexibility than the neat PBAT film, while the thermal stability of the film has not changed significantly. The blending of curcumin significantly decreased the water vapor permeability of the PBAT film. Additionally, the PBAT/curcumin film showed potent antioxidant activity with some antimicrobial activity. The PBAT/curcumin films with improved water vapor barrier and additional functions can be used for active packaging applications.
Highlights
Petrochemical-based synthetic plastics gain popularity among all packaging materials due to their lightness, cost-effectiveness, user-friendliness, corrosion resistance, and structural properties [1].Among the synthetic plastics commonly used in various packaging products are polypropylene, polystyrene, high and low-density polyethylene, polyethylene terephthalate, and polyvinyl chloride [2].Plastics production worldwide has reached ~450 million tons each year, of which about 40% is used in the packaging industry [2]
It showed the smooth-surfaced films, in which curcumin was evenly dispersed in the poly(butylene adipate-co-terephthalate) (PBAT) matrix
At a small amount of curcumin, it formed a compatible film with the PBAT without creating an aggregation of the particle
Summary
Plastics production worldwide has reached ~450 million tons each year, of which about 40% is used in the packaging industry [2]. The increase in plastics production is very alarming, and the growth rate of plastics production worldwide is expected to reach ~1800 million tons in 2050 [3]. There is an increasing demand for eco-friendly, biodegradable, and renewable plastics because too many non-biodegradable plastic packaging materials are generated, which can affect the environment and eco-systems and cause serious plastic contamination [2,4,5]. Biodegradable and bio-based plastic packaging materials have gained significant attention for substituting non-biodegradable petroleum-based plastic polymers [6,7,8]. Biodegradable plastics are much more environmentally-friendly than petroleum-based plastics because they are decomposed by microorganisms in the environment, producing carbon dioxide and water [9,10]
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