Development of lightweight paper prepared from recycled pulp fiber

Research Project

Project/Area Number	16K18728
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Wood science
Research Institution	Tokyo University of Agriculture and Technology
Principal Investigator	Kose Ryota 東京農工大学, (連合)農学研究科(研究院), 助教 (60724143)
Co-Investigator(Renkei-kenkyūsha)	OKAYAMA Takayuki 東京農工大学, 理事 (70134799)
Project Period (FY)	2016-04-01 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000) Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords	セルロースナノファイバー / リサイクルパルプ / 紙 / 密度 / ナノ微細化技術 / 軽量紙 / 繊維間結合 / リサイクルパルプ繊維 / 軽量化紙 / パルプ・紙 / ナノ化技術 / セルロース / リサイクル
Outline of Final Research Achievements	In this study, we attempted to develop low density paper with high mechanical strength. We changed the morphology and the size of recycled pulp fiber using the aqueous counter collision (ACC) method. Thereafter, fiber sheets were prepared from the modified recycled pulp fiber. These sheets exhibited higher strength and lower density under the same ACC treatment condition, compared to sheets made from modified virgin pulp fiber. Furthermore, pulp sheets mixed with cellulose nanofibers (CNFs) made from recycled pulp fiber tend to have a similar strength and lower density to the pulp fiber sheets mixed with CNFs made from virgin pulp fiber.