High performance membranes for water purification prepared from bio-based materials

2017 Fiscal Year Final Research Report

• Project/Area Number: 16H06912
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Wood science
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: Shimizu Michiko 京都工芸繊維大学, グローバルエクセレンス, 助教 (30759965)
• Research Collaborator: Rubén Álvarez-Asencio ; Niklas Nordgren ; UEDONO Akira
• Project Period (FY): 2016-08-26 – 2018-03-31
• Keywords: 水処理膜 / セルロースナノファイバー / 酢酸セルロース / 表面改質

Outline of Final Research Achievements

Cellulose acetate (CA) membranes with surface-modified cellulose nanofibrils (CNFs) were designed for water purification systems. Surface-modified TEMPO-oxidized CNFs dispersed in organic solvents were added to cellulose acetate solutions. CA membranes with CNFs were prepared by phase inversion process. Pure water flux and solute permeability of the membranes were measured using a cross-flow filtration system. The water permeability, porestructures and mechanical properties of the membranes were changed by adding CNFs. These results indicate that the surface modification of CNFs have an important role for increasing the affinity between CA and CNFs.

Free Research Field

木質材料科学