PREPARATION OF RECYCLED PLASTICS FROM DEPOLYMERISED MATERIALS OF WASTE FRPS
The preparation of recycled plastic from the depolymerized materials is the final stage for the chemical recycled process.1 Recently, we have developed an efficient method to depolymerize waste fiber-reinforced plastics,2 one of the formidable plastic to treat in chemical recycling scheme, by treatment with supercritical MeOH.3 For this process, addition of catalytic amounts of DMAP, NmN-dimethylaminopyridine,4 was essential for the complete break down of FRP. The monomeric material made by this way, however, failed for the formation of recycled polymers due to the contamination of impurities derived from the decomposition of DMAP. This is a problem to be overcome for establishing efficient chemical recycling of FRP. Removal of the impurities and purification of the recovered materials were achieved by washing treatment with water and the purity of dimethylphthlate, DMP, was enhanced to more than 90％.5 Although this was a satisfactory solution of the problem, the washing treatment was somewhat troublesome in the practical manipulation.
Yugo Akinari Kazuo Yamada Takeru Watanabe Fumiaki Tomonaga Akio Kamimura
Department Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755- Yamaguchi Prefectural Industrial Technology Institute, Ube 755-0195,Japan
国际会议
成都
英文
229-232
2009-10-11（万方平台首次上网日期，不代表论文的发表时间）