Migration and performance of erucamide slip additive in high-density polyethylene bottle caps

Dulal, N, Shanks, R, Chalmers, D, Adhikari, B and Gill, H 2018, 'Migration and performance of erucamide slip additive in high-density polyethylene bottle caps', Journal of Applied Polymer Science, vol. 135, no. 43, pp. 1-8.


Document type: Journal Article
Collection: Journal Articles

Title Migration and performance of erucamide slip additive in high-density polyethylene bottle caps
Author(s) Dulal, N
Shanks, R
Chalmers, D
Adhikari, B
Gill, H
Year 2018
Journal name Journal of Applied Polymer Science
Volume number 135
Issue number 43
Start page 1
End page 8
Total pages 8
Publisher John Wiley & Sons
Abstract Diffusion of erucamide and their morphology on surface characteristics of high-density polyethylene (HDPE) screw caps depend on storage conditions. Erucamide performance relies on its amount, distribution, and consistency on the surface of HDPE. Specific application and removal torques can be achieved by controlling the amount of erucamide on the surface. The surface amount and the torque increased to an optimum level at 38 and 50 °C within 120 hours of incubation, while they remained unchanged for lower temperatures. Erucamide diffused to the surface and formed flat plate-like crystal structures at similar time and temperature. These flat-plates can slide over each other and provide the slip required to decrease the torque. An increase in contact angle demonstrated that hydrophobic hydrocarbon-chains of amide slip additives were oriented toward the air interface. An optimum surface amount of erucamide for proper sealing torque could be produced at a different combination of storage time and temperature.
Subject Food Packaging, Preservation and Safety
Keyword(s) application torque and closure
erucamide
high-density polyethylene
migration
slip additive
DOI - identifier 10.1002/app.46822
Copyright notice © 2018 Wiley Periodicals, Inc.
ISSN 0021-8995
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