[16a-A41-1~2] 8.7 Plasma Electronics Invited Talk

10:45 AM - 11:30 AM JST(1:45 AM - 2:30 AM UTC)English Presentation

[16a-A41-2] [Invited Talk in the "Plasma Electronics" session] Utilizing Custom-built Plasma Sources for Natural Materials Processing

〇Magdaleno Jr Vasquez¹ (1.University of the Philippines Diliman)

Keywords:

plasma treatment,surface modification

Plasma systems have been gaining considerable attention because of their potential uses in the processing of natural products. These systems are simple, inexpensive, easy to use, low maintenance, fast, and generally safe. In this talk, modular open system plasma devices were developed to treat different materials such as bamboo, cellulose, and carrageenan. Atmospheric and subatmospheric pressure plasma systems were assembled using custom-designed components and used to tailor the surface characteristics of materials for specific applications. For bamboo, the surface wettability can be tuned depending on the desired response. Plasma-induced hydrophilicity improved the adhesion strength of bamboo to polyvinyl acetate by up to 55%. Likewise, a plasma-based treatment improved the fire retardancy of hydrophobic bamboo by more than twice the ignition time of untreated bamboo. Plasma treatment was also used to modify the surfaces of cellulose and carrageenan powders to improve their dissolution and processability. Plasma-treated cellulose was easily dissolved in lithium chloride–dimethylacetamide. After being exposed to plasma, the carrageenan powders easily dissolved. These plasma processes can be used to improve miscibility. Plasma-induced compatibilization enabled the use of biomass-based products. The ongoing progress and innovation in reconfigurable plasma systems will enhance surface processing methods and lower operational expenses.