Investigating cellulose nanocrystal blends with PLA

Non-renewable fossil fuel derived plastics are ubiquitous in modern society, leading to negative environmental impacts. Urgent action is needed to reduce our societal reliance on these plastic products. The use of bio-based and/or biodegradable thermoplastics such as poly(lactic acid) (PLA) could be a potential solution, however these materials typically have limited mechanical strength, hindering their practical use in industrial applications. This research project aims to use cellulose nanocrystals (CNCs) – sustainable hydrophilic rod-shaped particles prepared from cellulose, the most abundant natural polymer on Earth – as a reinforcing and nucleating agent for PLA blends. Although CNCs have been previously investigated as reinforcing agents for PLA blends, this typically requires blending with harmful organic solvents or other non-sustainable compatibilization approaches to encourage good CNC dispersion within relatively hydrophobic PLA matrices. Herein, we aim to explore sustainable and scalable compatibilization strategies for preparing effective CNC PLA blends with improved mechanical and crystallization properties.

Faculty Supervisor:

Kevin De France;Marianna Kontopoulou

Student:

Partner:

Anomera

Discipline:

Engineering

Sector:

Manufacturing

University:

Queen's University

Program: