Biobased Multilayer Flexible Packaging with Enhanced Gas Barrier Properties due to Cellulose Nanocrystals (CNCs)
Source abstract
Abstract
In this study, a transparent trilayer film was successfully fabricated using blade coating and hot roll lamination techniques, comprising outer layers of polylactic acid (PLA) and an inner layer of a highly shear-oriented cellulose nanocrystal (CNC)/poly(vinyl alcohol) (PVA). The CNC/PVA coating, with a thickness ranging from 5 to 6 μm and exhibiting a high degree of CNC alignment, significantly enhanced the oxygen and carbon dioxide barrier properties, surpassing PLA by several hundred-fold. Furthermore, these laminates were formed into bags, where a fruit storage test showed that PLA-CNC/PVA–PLA could extend the shelf life of fresh apple slices based on weight loss and enzymatic browning. This research showcases the potential of CNC-based coatings integrated with biodegradable polymer films to produce high-performance packaging materials, offering a promising, scalable process.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Cellulose Research Studies · Nanocomposite Films for Food Packaging · biodegradable polymer synthesis and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Engineering
Purdue University
Forest Products Laboratory, United States Department of Agriculture
Department of Mechanical Engineering
University of Delaware
Funding
U.S. Endowment for Forestry and Communities · Environmental Security Technology Certification Program · Advanced Research Projects Agency - Energy · Purdue Research Foundation · Strategic Environmental Research and Development Program
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