Cellulose nanocrystals-microfibrils biocomposite with improved membrane performance

被引:7
|
作者
Rijal, Moch Saifur [1 ]
Nasir, Muhamad [3 ]
Purwasasmita, Bambang Sunendar [2 ,4 ]
Asri, Lia A. T. W. [5 ]
机构
[1] Inst Teknol Bandung, Grad Sch, Nanotechnol Study Program, Jalan Tamansari 64, Bandung 40116, Indonesia
[2] Inst Teknol Bandung, Res Ctr Nanosci & Nanotechnol, Jalan Ganesa 10, Bandung 40132, Indonesia
[3] Natl Res & Innovat Agcy, Res Ctr Environm & Clean Technol, Jalan Cisitu Lama, Bandung 40135, Indonesia
[4] Inst Teknol Bandung, Fac Ind Technol, Engn Phys Res Grp, Jalan Ganesa 10, Bandung 40132, Indonesia
[5] Inst Teknol Bandung, Fac Mech & Aerosp Engn, Mat Sci & Engn Res Grp, Jalan Ganesa 10, Bandung 40132, Indonesia
来源
CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS | 2023年 / 5卷
关键词
Cellulose nanocrystals; Cellulose microfibrils; Biomass; Biocomposite; Membrane; COMPOSITE MEMBRANES; MELT EXTRUSION; FILM; EXTRACTION; STABILITY; SALT;
D O I
10.1016/j.carpta.2023.100326
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
This study investigates eco-friendly membrane biocomposites derived from biomass, utilizing cellulose micro-fibrils (CMF) as the main membrane material. Cellulose nanocrystals (CNC), isolated from rice husk, were added as reinforcing fillers in CMF flat sheet membranes. CNC with concentrations of 0%, 10%, 20%, and 30% were employed. Scanning electron microscopy images revealed that CNC influenced the surface profile and the pore structure of the membranes, reducing the porosity by 23%. The empty areas formed by CMF interaction were effectively filled by CNC. This modified membrane resulted in an increase in NaCl rejection of up to 16%. Dy-namic water contact angle demonstrated the role of CNC in enhancing permeability, with a shorter spreading time of 13 min. It was also confirmed by the highest flux of 351 L/m -2h-1 under pure water flux conditions. Mechanical properties were significantly improved, with a 125% increase in tensile strength and a modulus of 329 MPa. The distribution of CNC within the membranes filled pores and enhanced CMF interaction, facilitated by abundant hydroxyl groups in CNC. Overall, this study highlights the potential of eco-friendly membrane biocomposites derived from biomass, offering valuable insights for the development of sustainable and efficient membrane materials.
引用
收藏
页数:12
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