Environmental degradation in biocomposites

Abstract

The emergence of biocomposites as an alternative to petroleum-based composites has largely been to superior technical properties along with problems associated with depleting petroleum resources and increasing environmental legislations. The biocomposite industry has found acceptance (mainly as nonload bearing structures) in the construction and automotive sector and reports suggest a projected growth rate of 22% per year. Biocomposites—mainly containing natural reinforcements in a petroleum/biopolymer-based matrix possess many appealing characteristics such as high specific properties, lightweight, positive environmental impact, and biodegradable nature. However, the problems associated with biocomposites/bioplastics and in particular natural fibres are its degradation behaviour in the presence of moisture, temperature, sunlight, and microbial attack which restricts its increased use in industrial applications. Research on studies related to degradation behaviour of biocomposites in different environmental conditions is increasing indicating that it is currently a very relevant research topic.