Water absorption and stress relaxation behavior of PP/date palm fiber composite materials

Sonia Boukettaya, Fahad Almaskari, Ahmed Abdala, Ahmad Alawar, Hachmi Ben Daly, Adel Hammami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this study, the effects of the fiber loading, the coupling agent content and the amount of the absorbed humidity on the stress relaxation behavior of the PP/date palm fibers composite material were characterized, using a dynamic mechanical analyzer (DMA). The obtained results have indicated that the rate of stress relaxation decreases as the date palm fiber content increases. It is therefore suggested that the presence of the natural fibers in composite materials do not help polymer molecules to recover their original configurations, generally present in the polymer matrix before any mechanical loading. The use of the coupling agent was found to also reduce such rate, due to the improvement of the quality of adhesion between the reinforcing phase and the polymer molecules. By increasing the amount of the absorbed humidity, a higher relaxation rate was obtained. This is an expected result since the presence of water molecules in composite materials encourages the relative movement (sliding) of polymer molecules, reducing therefore their recovering time and these can regain their initial configuration at a higher rate.

Original languageEnglish
Title of host publicationDesign and Modeling of Mechanical Systems - II - Proceedings of the 6th Conference on Design and Modeling of Mechanical Systems, CMSM 2015
EditorsHachmi Ben Daly, Mnaouar Chouchane, Nizar Aifaoui, Mnaouar Chouchane, Tahar Fakhfakh, Fakher Chaari
PublisherSpringer Verlag
Pages437-445
Number of pages9
ISBN (Electronic)9783319175263
DOIs
Publication statusPublished - 2015
Event6th International Congress on Design and Modeling of Mechanical Systems, CMSM 2015 - Hammamet, Tunisia
Duration: Mar 23 2015Mar 25 2015

Publication series

NameLecture Notes in Control and Information Sciences
Volume789
ISSN (Print)0170-8643

Other

Other6th International Congress on Design and Modeling of Mechanical Systems, CMSM 2015
Country/TerritoryTunisia
CityHammamet
Period3/23/153/25/15

Keywords

  • Composite
  • Coupling agent
  • Date palm fiber
  • Polypropylene
  • Stress relaxation

ASJC Scopus subject areas

  • Library and Information Sciences

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