Song, Younghan Seo, Jin Young Kim, Hyungsup Cho, Sangho Baek, Kyung-Youl 2024-01-19T13:02:38Z 2024-01-19T13:02:38Z 2022-01-10 2022-01 0144-8617 https://pubs.kist.re.kr/handle/201004/115907 Herein, environmentally benign chitin nanofiber (ChNF) membranes were fabricated by regulating suspension behavior. The introduction of zeolitic imidazole frameworks (ZIF-8) into the composite membranes led to the domain formation of ChNF derived by coordinative interaction, resulting in pore size-tunable membranes. Based on the rheological, morphological, and structural characterizations, the driving force of pore-size control was studied in the aqueous suspension of ChNF and ZIF-8 according to the relative concentration. At critical concentration, the 30-ChNF membrane presents superior water permeance (40 LMH h-1) while maintaining a high rejection rate (>80% for all organic dyes). Moreover, the molecular size cut-off of the composite membranes for dyes can be controlled in the range of less than 1 nm to 2 nm. The experimental results provide a simple strategy for the preparation of pore tunable ChNF membranes using MOF with high mechanical strength, good durability, high flux, dye rejection, and antifouling ability. English Pergamon Press Ltd. Pore-size control of chitin nanofibrous composite membrane using metal-organic frameworks Article 10.1016/j.carbpol.2021.118754 1 Carbohydrate Polymers, v.275 Carbohydrate Polymers 275 Y scie scopus 000712466000004 2-s2.0-85117387575 Chemistry, Applied Chemistry, Organic Polymer Science Chemistry Polymer Science Article HIGHLY EFFICIENT REMOVAL CELLULOSE SURFACE DYES Chitin nanofiber (ChNF) Pore size control Bioderived membrane Water purification Rheology