Assessment of Biodegradability of Bio-Based Polymers Compared to Conventional Plastics

CHAPTER ONE

1.1 Background to the Study

Plastic pollution has become a major environmental challenge worldwide. Conventional plastics, made from petrochemical sources, are durable but resist degradation, leading to long-term environmental accumulation (Thompson et al., 2009). To address this issue, scientists have developed bio-based polymers derived from renewable materials such as starch, cellulose, and polylactic acid. These polymers degrade faster under natural conditions and offer a sustainable alternative to conventional plastics (Ramesh Kumar et al., 2020).
However, the rate and extent of biodegradation depend on environmental factors such as temperature, moisture, and microbial activity. Therefore, assessing and comparing the biodegradability of bio-based and synthetic plastics provides valuable insight into their environmental impact and industrial potential.

1.2 Statement of the Problem

Despite the global shift toward sustainable materials, limited data exist on the comparative biodegradability of bio-based polymers under local environmental conditions. Without such studies, industries and policymakers may struggle to select appropriate materials for sustainable packaging and production.

1.3 Objectives of the Study

1. To determine the biodegradation rate of selected bio-based and synthetic plastics.

2. To analyze the influence of environmental factors on their degradation.

3. To compare the overall environmental performance of the two polymer types.

1.4 Significance of the Study

This study will provide evidence supporting the use of biodegradable materials in industries. It will also help policymakers and environmental agencies create guidelines for sustainable waste management. Moreover, the findings will contribute to global discussions on plastic pollution and environmental conservation (Hopewell et al., 2009).

1.5 Scope of the Study

The research will focus on selected bio-based and synthetic polymers, tested under controlled laboratory conditions. The analysis will emphasize biodegradation rate and environmental performance.