Abstract

The widespread use of synthetic plastics poses significant environmental challenges due to their
durability and dependence on non-renewable resources. Biodegradable plastics, derived from
renewable biological sources, offer a sustainable alternative that can mitigate waste disposal issues
and environmental pollution. This paper examines the factors influencing the suitability of bioplastics
for various packaging applications and discusses emerging techniques to enhance their properties.
Regarding packaging applications in particular, biodegradable plastics offer a viable substitute for
conventional plastics. A class of plastics known as bioplastics is produced using renewable resources
such as microorganisms, agricultural waste, or plants. They can be classified as Bio-based plastics
derived from renewable biomass sources. They include polymers such as polylactic acid (PLA),
polyhydroxyalkanoates (PHA), starch-based plastics, cellulose-based plastics, and protein-based
plastics. Fossil-based plastics are derived from fossil fuels like petroleum but can be biodegradable or
compostable. They include certain types of biodegradable polyesters and polyolefins. Microorganisms
have the ability to break down biodegradable plastics into biomass, carbon dioxide, and water under
specific conditions. Examples include PLA, PHA, and certain starch-based plastics whereas nonbiodegradable bioplastics do not readily decompose into natural elements. This group comprises nonbiodegradable bio-based polymers like bio-based polyethylene terephthalate (PET) and bio-based
polyethylene (PE). Each classification has its own set of advantages and limitations, depending on
factors like cost, performance, and end-of-life disposal options. The choice of bioplastics depends on
the specific application and environmental goals. The use of biodegradable plastics is growing in
popularity as an environmentally preferable substitute for conventional plastics derived from
petroleum. By addressing aspects like mechanical strength, barrier properties, and biodegradability,
bioplastics can fulfill the varied needs of the packaging industry. Emerging techniques like
nanocomposites, bioplastic blends, and surface modifications offer pathways to enhance the properties
of bioplastics, making them viable for a broader range of applications. Ongoing research and
development in this area will be essential for promoting the use of sustainable materials in packaging
and diminishing the environmental effects of plastic waste.

Keyword: Bioplastic, packaging, starch, cellulose, sustainability

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