Knotty Tear Phenomena and Effect of Maturation Time on Knotty Tear in Filled Natural Rubber Latex Films
Siti Aisyah Jarkasi1, Dzaraini Kamarun2, Raja Roslan Raja Mohamed3, Azemi Samsuri4
1Siti Aisyah Jarkasi, Orchestrated Polymer research Group, OpoR, Faculty of Applied Sciences, Universiti Teknologi MARA Shah Alam, Malaysia.
2Dzaraini Kamarun*, Orchestrated Polymer research Group, OpoR, Faculty of Applied Sciences, Universiti Teknologi MARA Shah Alam,
3Raja Roslan Raja Mohamed*, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia.
4Azemi Samsuri, Institute of Quality and Knowledge Advancement (InQKA), Universiti Teknologi MARA, Shah Alam, Malaysia.
Manuscript received on November 20, 2019. | Revised Manuscript received on November 28, 2019. | Manuscript published on 30 November, 2019. | PP: 6813-6817 | Volume-8 Issue-4, November 2019. | Retrieval Number: D5194118419/2019©BEIESP | DOI: 10.35940/ijrte.D5194.118419
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Knotty tearing is a phenomena normally observed in reinforced black-filled natural rubber (NR) vulcanizate but not in gum NR vulcanizate. Unfortunately the underlying cause of knotty tear is still not fully understood and need to be unraveled. Many factors contribute to knotty tear behavior which include suppression of strain-induce crystallization, protein content of latex, vulcanization temperature and pre-vulcanization and post-vulcanization of latex. In this study, we concentrate on varying the maturation time during compounding process in filled NR latex (NRL) to study knotty tear behavior. The maturation time were varied in the range (0 – 72) hrs; and the tear deviation were measured to determine the extent of knotty tear phenomena. It was found that at the optimum maturation time of 24 hrs samples show highest tearing energy and show knotty tear phenomena with the least angle of tear deviation.
Keywords: Knotty Tear, Tearing Energy, Natural Rubber Latex, Filled NRL Films.
Scope of the Article: Time and Knowledge Management Tools.