Preparation and properties of heat‐shrinkable cross‐linked low‐density polyethylene
Abstract
Abstract In this work, heat‐shrinkable characteristics of a polyethylene compound were obtained by blending mixtures of low‐density polyethylene with varying amount of peroxide. These were then extruded and molded to the required shape and then cross‐linked by chemical means, followed by heating and stretching and then cooled to “freeze‐in” the oriented polymer structure (elastic memory). A decrease in the melting point and heat of fusion (ΔHf), as determined from the DSC melting enthalpies, was observed with an increase in the dicumyl peroxide (DCP) concentration. Tests on the heat shrinkablity of the samples showed that the stretching temperature has a large effect on the shrinkage temperature. The results showed that by increasing the peroxide content, the shrinkage temperature was decreased. The elongation at break decreased with an increase in the DCP concentration. Increasing the temperature in lightly cross‐linked samples (low percent DCP) resulted in a reduction in the elongation at break. Increasing the cross‐linking density (DCP content) gave an opposite effect. © 2003 Wiley Periodicals, Inc. Adv Polym Techn 22: 112–119, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/adv.10041
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In the food packaging sector SMPs can be used for heat-shrinkable packaging films, for instance for thermally processed food.
“Particularly, in the food packaging sector SMPs can be used for heat-shrinkable packaging films, for instance for thermally processed food [18, 19].”
From Biodegradable poly(ester-urethane) incorporated with catechin with shape memory and antioxidant activity for food packaging (2017) · cites this paper as [18]
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- Authors
- Morshedian, J., Khonakdar, H. A., Mehrabzadeh, M., & Eslami, H.
- Affiliations
- Iran Polymer and Petrochemical Institute (IR)
- Corresponding author
- Khonakdar, H. A.
- ORCID
- Khonakdar, H. A.
- Venue
- Advances in Polymer Technology
- Publisher
- Wiley
- Published
- 2003-03-25
- Volume
- 22
- Issue
- 2
- Pages
- 112-119
- ISSN
- 0730-6679 (ISSN-L)
- 1098-2329
- OpenAlex
- W2038629595
- Cited by
- 71
- References
- 0
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 5 · 2023: 2 · 2022: 4 · 2021: 4 · 2019: 6 · 2018: 3 · 2017: 2 · 2016: 5 · 2015: 1 · 2014: 5 · 2013: 4 · 2012: 3
- FWCI
- 2.60
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Advances in Polymer Technology (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer Foaming and Composites
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
- Keywords
- low-density polyethylene, cross-linked polyethylene, dicumyl peroxide, peroxide crosslinking, shrinkage temperature, melting point depression, heat of fusion, elongation at break, crosslink density
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