Marieme Josephine Letteさんが、国際学会9th International Conference on Green Composites (ICGC-9)においてBest Poster Awardを受賞しました。

【受賞者】Marieme Josephine Lette (機械工学専攻1年)

【指導教員】高﨑 明人 教授(機械機能工学科)

Processing and Characterization of Ozone Treated Bamboo Fiber / Phenolic Resin Wood-Polymer Composite

As for all natural fiber/polymer composites, weak interfaces between hydrophilic fibers and hydrophobic polymer matrix confer poor strength to the composite material. To overcome that big issue and enhance composite’s properties, various types of chemical and physical treatment has been investigated.

Therefore, the main purpose of this research work was to investigate effects of Ozone treatment on the flexural properties of bamboo fibers/phenolic resin wood-polymer composite.

Before sample processing and three-point bending test, bamboo fibers/phenolic resin formulations were exposed to ozone gas for 5, 10, 20, 30 and 60 minutes. Although the non-uniformity of fiber distribution inside the polymeric matrix made more difficult the evaluation of ozone treatment, the results showed significant enhancement in stiffness and strength of WPC samples and better adhesion at the fiber/matrix interfaces after ozone treatment. 20min of Ozone exposure exhibits the best results while higher exposure time causes loss in strength of PR/BF WPCs due to PR degradation through molecular weight loss caused by high oxidation state of the polymer.

As the main purpose of my research is to find out ways to manufacture green composites that are affordable, fashionable, recyclable, durable, resistant to degradation and fungal attacks, lightweight, have low friction during compounding and low CO2 emission, it will contribute positively to the society in the way that they will offer more sustainability than their petroleum-based counterparts for construction, automotive, electronics and marine industries.
In the future, I would like to develop my research towards widening the range of applications of green composites through development of highly functional biomass based composites.