Status : Verified
| Personal Name | Alcantara, Bryndell J. |
|---|---|
| Resource Title | Surface Treatment of Kawayan Tinik (Bambusa blumeana) using an Atmospheric Pressure Plasma System |
| Date Issued | 28 July 2024 |
| Abstract | Green materials, such as lumber , have played a vital role in the construction and furniture industries. However, the supply of lumber cannot meet current global demand. One promising alternative is the development of engineered bamboo products. Raw bamboo culms undergo a series of processes and are glued together to form structural parts. The quality of engineered bamboo products depends on the strength of the adhesive. As the industry moves to use non-toxic adhesives, polyvinyl acetate (PVAc) is considered for bamboo. However, because of the hydrophobic properties of bamboo, the adhesion strength of PVAc is not strong enough. Engineered bamboo is also a cellulosic material, which is considered a combustible material. Due to the drying process, to prevent molds, its fire-retardant properties are lower compared to those of lumber. In this work, the PVAc adhesion strength and fire retardancy were improved by pretreatment of bamboo slats using a custom-built atmospheric pressure plasma jet. Argon (Ar), air, and vaporized hexamethyldisiloxane (HMDSO) were used as the process gases. The results showed that the single-lap shear test revealed a 33% increase in shear strength compared to untreated bamboo slats. When air was added to the Ar plasma, the shear strength increased to 55%. Further analysis of the plasma-treated surfaces revealed a significant increase in surfacefree energies, especially the polar energy component. This led to an increase in hydrophilicity. The combination of Ar and air plasma treatment induced physical and chemical changes on the surface, which improved the affinity for water-based PVAc. Using vaporized HMDSO, a thin layer of organosilicon is deposited on bamboo surfaces through plasma polymerization. This thin film served as a barrier which increased the ignition time to almost three times that of untreated bamboo. This work demonstrated the use of a simple yet versatile plasma system to tailor the surface properties of bamboo. Plasma treatmen |
| Degree Course | MS Materials Science and Engineering |
| Language | English |
| Keyword | Engineered Bamboo, Surface Modification, Atmospheric Pressure Plasma System, Plasma Polymerization |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : I - Has patentable or registrable invention of creation.
Access Permission : Limited Access