Ageing effect on the properties of tri-layer polyethylene film used as greenhouse roof

Abdelkader Dehbi, Abdel Hamid I. Mourad, Amar Bouaza

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

This work aims at studying the degradable effect of natural and artificial ageing on tri-layer polyethylene films used as greenhouse cover in the North Africa environment. The film was supplied by Agrofilm and made of low density polyethylene (LDPE), containing additives (e.g., color and infrared IR and ultraviolet UV stabilizers). This film was used to build a real greenhouse located in the North of Algeria. Impact of ageing was monitored by observing the changes in mechanical (strength and ductility) properties. The study has been carried out over a period of eight-months of natural and artificial ageing. The films have been artificially aged at 40°C, 40°C + UVA, 50°C and at 50°C + UVA. The findings show that the environmental factors have degradable effects on the durability and all properties of the polyethylene film. The study revealed also that the degradation parameters measured are directly related to criteria for evaluating the effectiveness of agricultural greenhouse. The simultaneous effect of temperature and UVA radiation induced the most significant degradation on the film surface and consequently a reduction in the lifetime of the material.

Original languageEnglish
Pages (from-to)466-471
Number of pages6
JournalProcedia Engineering
Volume10
DOIs
Publication statusPublished - 2011

Keywords

  • Ageing
  • Degradation
  • LDPE
  • Lifetime
  • Temperature and UVA
  • Tri-layer films

ASJC Scopus subject areas

  • Engineering(all)

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