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Failure Mechanism of the Corrugated Medium under Simulated Cold Chain Logistics
Hongxia Su1, Chongxing Huang1,2, Cuicui Li1
1School of Light Industry & Food Engineering, Guangxi University, Nanning 530004, China.
ACS Omega
|July 10, 2023
Summary
This study reveals how freeze-thaw cycles degrade corrugated food packaging, impacting its strength for cold chain logistics. Understanding these changes is key to improving durable paperboard packaging.
Area of Science:
- Materials Science
- Packaging Science
- Food Science
Background:
- Cold chain logistics requires robust food packaging, especially in humid environments.
- Corrugated medium is a common food packaging material but can degrade under specific conditions.
Purpose of the Study:
- To investigate the impact of environmental factors on the transverse ring crush index of corrugated medium.
- To understand the failure mechanisms of corrugated packaging during cold chain transportation.
Main Methods:
- Freeze-thaw treatment was applied to corrugated medium samples.
- X-ray Diffraction (XRD), Degree of Polymerization (DP), Fourier-Transform Infrared Spectroscopy (FT-IR), and Scanning Electron Microscopy (SEM) were used for analysis.
Main Results:
- Freeze-thaw treatment decreased crystallinity (3.47%) and polymerization (7.83%).
- Intermolecular hydrogen bonds reduced by approximately 3.00% after freezing.
- Calcium carbonate (CaCO3) precipitation and a 26.01% increase in pore size were observed on the paper surface.
Conclusions:
- Environmental factors, particularly freeze-thaw cycles, significantly affect the structural integrity and performance of corrugated medium.
- The observed degradation mechanisms provide insights for developing more resilient cellulose-based paperboard for cold chain applications.
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