How do cellulose nanocrystals act as barriers in paper packaging?

Cellulose nanocrystals (CNCs) are increasingly being utilized as barriers in paper packaging due to their exceptional properties. These nanoscale particles, derived from renewable resources such as wood pulp, possess a high tensile strength and chemical stability. When incorporated into the paper matrix, CNCs form a dense network that acts as a physical and chemical barrier, preventing the permeation of gases, liquids, and even oils. The high surface area of CNCs allows for effective entrapment of molecules within the packaging material, enhancing its ability to preserve the contents from external factors like moisture, oxygen, and light. Moreover, CNCs can reinforce the paper's mechanical strength, further enhancing the barrier properties. Overall, the incorporation of cellulose nanocrystals in paper packaging offers a sustainable and effective solution for improving product shelf life and reducing food waste.

This mind map was published on 30 November 2023 and has been viewed 59 times.