Moisture absorption and hydrothermal aging in bamboo fibre/polyester composite

Zulkarnain, Azwa (2014) Moisture absorption and hydrothermal aging in bamboo fibre/polyester composite. In: Australasian Composites Conference (CA 2014): Materials for a Lighter and Smarter World, 7–9 Apr 2014, Newcastle, Australia.


Outdoor application of natural fibre reinforced composites is restricted mainly due to its capability to absorb moisture which can lead to physical and mechanical degradation. In this work, bamboo fibre/polyester composites subjected to alkalization at 0, 4, 6, and 8 wt.% of sodium hydroxide (NaOH), as well as neat polyester, were immersed in water at room temperature (25ºC) for 60 days and at 80ºC for two days.
The percentages of weight and thickness increment were recorded until a plateau was observed on the moisture absorption and thickness swelling graphs, or obvious physical degradation was observed on the specimens. At room temperature, all specimens reached equilibrium moisture content and maximum thickness swelling at 60 days, with 6 wt.% NaOH treated composites exhibiting the least absorptivity and swelling. Untreated composites (0 wt.%) experienced the highest percentage of weight gain indicating that alkalization reduces moisture absorption of composites. At 80oC, there was no significant difference on the rate of weight gain among the treated composites but all specimens showed signs of physical degradation on the second day with maximum thickness swelling achieved.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 12 Jun 2014 02:17
Last Modified: 14 Jun 2017 00:45
Uncontrolled Keywords: moisture; degradation; bamboo fibre; immersion
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870399 Construction Materials Performance and Processes not elsewhere classified

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