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Energy dissipation in natural rubber latex films: The effect of stabilizers, leaching and acetone-treatment

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Number of pages15
JournalJournal of Applied Polymer Science
DOIs
Publication statusE-pub ahead of print - 2020
Publication typeA1 Journal article-refereed

Abstract

Natural rubber (NR) is a versatile material possessing outstanding mechanical properties, which can be used in multiple applications including the rapidly developing dielectric elastomer generators (DEGs). One of the drawbacks of the existing DEGs is their low efficiency, which can be improved by lowering the dielectric and mechanical losses originating from the material. Therefore, the present research was focusing on assessing the ways to minimize the dielectric and mechanical losses of NR films rather than developing a DEG. In this article, the effect of natural proteins and the rubber stabilizers on energy dissipation of NR films was evaluated. Moreover, the effect of sample posttreatment (with water and acetone), curing and time after cure was discussed. As a result, deproteinized NR stabilized by ammonium caseinate outperformed unmodified NR due to reduced dielectric losses, mechanical hysteresis and stress relaxation. Moreover, the posttreatment methods were found to moderately reduce the material-relates losses.

Keywords

  • dielectric properties, elastomers, mechanical properties, rubber

Publication forum classification

Field of science, Statistics Finland