Exploring the role of biodegradable plastics

Abstract

The aim of this Ph.D. thesis was to explore the role of biobased, biodegradable plastics in a new and sustainable plastics economy, where plastics serve their useful function without the associated negative externalities. This contributes to understanding and addressing the issue of plastic persistence and accumulation in the environment. A unique perspective is achieved through taking a multidisciplinary approach, with research relating to three different themes (A: material properties, B: environmental impact assessment and C: social attitudes) undertaken (Figure 1). These three themes, with their varying objectives, were selected deliberately. Material properties were the initial point of attention as, ultimately, if biodegradable plastics that offer comparable or enhanced material properties compared to conventional plastics cannot be developed, the role they play in the plastics system will be limited. However, throughout the course of the initial research it became clear that to satisfactorily explore the role of biodegradable plastics, the broader system they are used within would also need to be considered. This includes understanding the environmental impact of the materials being investigated as well as understanding how they will be viewed and interacted with in society. Hence, the scope of the research was expanded to include the environmental impact assessment and social attitudes themes.

Biodegradation of Food Waste by Mesophilic and Thermophilic Microorganisms in Duhok city

“…Such wastage may lead to economic losses, needless hunger, cli-mate and environmental problems. In addition, producing methane gas which causes major effect on the greenhouse [10], [11]. An dangerous environment is created by improper waste management, which should be replaced by composting or another safer waste management method.…”

Expanding Policy for Biodegradable Plastic Products and Market Dynamics of Bio-Based Plastics: Challenges and Opportunities

“…How the market for bioplastic in the coming years will grow will depend heavily on the growth of traditional plastics prices. The production is also influenced by other considerations such as technical advances, economies of scale, and raw material prices [12,13]. Moreover, strategies to promote renewable alternatives to plastics from fossil fuels will dramatically shift bio-plastic demand.…”

Caracterização De Filmes De Farinha De Arroz Com Guabiroba

“…Sendo pesquisado novas fontes de matérias primas, a associação de matérias, e as formas de produção, buscando conhecer as possibilidades de transformação dos materiais, suas estruturas e limitações [1]. A embalagem de alimentos biodegradável tem o apelo de ampliar as opções de gerenciamento de resíduos, diminuindo a demanda por materiais de difícil reciclagem, além de diversa formas de obtenção, como polissacarídeos, proteínas e lipídeos, dependendo dos aditivos utilizados podem ser biodegradáveis e/ou comestíveis [2]. As propriedades do biopolímero têm grande influência sobre a funcionalidade do filme.…”