Development of chemical recycling of plastics and biopolymers toward effective valorization

2016 Fiscal Year Final Research Report

• Project/Area Number: 24241023
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental technology/Environmental materials
• Research Institution: Yamaguchi University
• Principal Investigator: Kamimura Akio 山口大学, 創成科学研究科, 教授 (30194971)
• Co-Investigator(Kenkyū-buntansha): 吉本 誠 山口大学, 医学系研究科, 准教授 (80322246)
• Research Collaborator: KATO Kazunari 山口大学, 大学院医学系研究科 ; IKEDA Kosuke 山口大学, 大学院医学系研究科 ; KAISO Kouji 宇部興産宇部研究所, 主任研究員 ; MATSUMOTO Hiroshi 宇部興産宇部研究所, 研究員 ; MURATA Kengo 山口大学, 大学院医学系研究科 ; TANIMURA Kazuhiko 山口大学, 大学院医学系研究科 ; MIHONO Kai 山口大学, 大学院医学系研究科
• Project Period (FY): 2012-04-01 – 2017-03-31
• Keywords: 解重合反応 / 高分子 / プラスチック / セルロース / 超臨界流体 / イオン液体 / リポソーム

Outline of Final Research Achievements

Studies on depolymerization reaction of plastics and natural polymers toward efficient valorization were carried out. We investigated efficient depolymerization of polyamides in supercritical methanol. Kinetic studies on this reaction revealed whole reaction mechanism and substitution of amino group in the monomer took place through SN2 reaction with added carboxylic acid. This reaction was generally applied and many of simple amines were also converted into alcohols under the same conditions. Ionic liquids provided a new conversion of sorbitol to isosorbide in only 10 minutes by heating in a microwave oven. This reaction was efficiently catalyzed by catalytic amounts of acid and solid acid catalyst such as ion exchange resin was also useful. Cellulose was effectively converted into glucose in ionic liquids in the presence of liposomes including cellulase, which was effectively stabilized and maintained its chemical reactivity for the efficient conversion.

Free Research Field

有機合成化学