PVDF/palygorskite composite ultrafiltration membranes: Effects of nano-clay particles on membrane structure and properties
Source abstract
Abstract
Abstract Palygorskite (PGS) was incorporated into a polyvinylidene fluoride (PVDF) matrix and PVDF/PGS nanocomposite UF membranes were prepared successfully via a combination of non-solvent-induced phase separation (NIPS) and thermally-induced phase separation (TIPS) processes. The influence of the size of the PGS particles (PGS-L, 450 nm and PGS-S, 302 nm) on the membrane pore structure, morphology, mechanical strength, filtration performance and antifouling property were investigated. The results showed that the PVDF/PGS-S composite membranes had higher porosity and lower overall membrane thickness and skin layer thickness. This directly resulted in better PWF, BSA flux, BSA rejection and FRR for the membranes loaded with PGS-S, when compared with the characteristics of PVDF/PGS-L membranes. Thus, the physical structures are dominant factors in determining the separation performance of PVDF/PGS composite membranes. However, the surface roughness and thermal stability of PVDF/PGS-L membranes were greater than those of PVDF/PGS-S membranes and their surface was also more hydrophilic. Moreover, they exhibited higher mechanical strength owing to stronger binding forces and lower porosity. Thus, the composite properties of PVDF/PGS UF membranes could be adjusted by controlling the scale of the inorganic filler.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Membrane Separation Technologies · Membrane Separation and Gas Transport · Dielectric materials and actuators
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Developing of titania-smectite nanocomposites UF membrane over zeolite based ceramic support10.1016/j.clay.2017.12.035 ↗
2. Application of sulfonic acid group functionalized graphene oxide to improve hydrophilicity, permeability, and antifouling of PVDF nanocomposite ultrafiltration membranes10.1016/j.memsci.2016.10.048 ↗
3. The formation of microporous polyvinylidene difluoride membranes by phase separation10.1016/S0376-7388(00)81159-X ↗
4. Enhanced hydrophilicity of a thermo-responsive PVDF/palygorskite-g-PNIPAAM hybrid ultrafiltration membrane via surface segregation induced by temperature10.1039/C6RA12807F ↗
5. Comparison of liquid-liquid displacement porosimetry and scanning electron microscopy image analysis to characterise ultrafiltration track-etched membranes10.1016/j.memsci.2004.02.038 ↗
6. Exploring the synergetic effects of graphene oxide (GO) and polyvinylpyrrodione (PVP) on poly (vinylylidenefluoride) (PVDF) ultrafiltration membrane performance10.1016/j.apsusc.2014.07.202 ↗
7. Critical review of montmorillonite/polymer mixed-matrix filtration membranes: Possibilities and challenges10.1016/j.clay.2018.10.016 ↗
8. The dependence of morphology of solid polymer electrolyte membranes on transient salt type: effect of cation type10.1002/pi.2819 ↗
9. High permeability of ultrafiltration membranes based on electrospun PVDF modified by nanosized zeolite hybrid membrane scaffolds under low pressure10.1016/j.cej.2014.05.022 ↗
10. Clay-based electrospun nanofibrous membranes for colored wastewater treatment10.1016/j.clay.2018.11.003 ↗
11. PVDF/palygorskite composite ultrafiltration membranes with enhanced abrasion resistance and flux10.1016/j.memsci.2015.08.011 ↗
12. Enhanced abrasion resistant PVDF/nanoclay hollow fiber composite membranes for water treatment10.1016/j.memsci.2013.07.062 ↗
13. Preparation and characterization of poly (vinylidene fluoride)/nanoclay nanocomposite flat sheet membranes for abrasion resistance10.1016/j.watres.2014.03.005 ↗
14. Morphology changes of polyvinylidene fluoride membrane under different phase separation mechanisms10.1016/j.memsci.2008.04.033 ↗
15. In situ formation of Ag nanoparticles in PVDF ultrafiltration membrane to mitigate organic and bacterial fouling10.1016/j.desal.2013.05.021 ↗
16. The effect of silver-PAMAM dendrimer nanocomposites on the performance of PVDF membranes10.1016/j.desal.2014.02.001 ↗
17. Preparation and characterization of NaY/PVDF hybrid ultrafiltration membranes containing silver ions as antibacterial materials10.1016/j.desal.2010.12.048 ↗
18. Effect of nano-sized Al2O3-particle addition on PVDF ultrafiltration membrane performance10.1016/j.memsci.2005.09.044 ↗
19. Pore size distribution determination from liquid permeation through microporous membranes10.1016/0376-7388(94)00209-H ↗
20. The effect of reduction degree of GO nanosheets on microstructure and performance of PVDF/GO hybrid membranes10.1016/j.memsci.2015.12.004 ↗
21. Design and performance study of hybrid photocatalytic reactor-PVDF/MWCNT nanocomposite membrane system for treatment of petroleum refinery wastewater10.1016/j.desal.2015.01.044 ↗
22. Basic Principles of Membrane Technology10.1524/zpch.1998.203.Part_1_2.263 ↗
23. Three independent ways to obtain information on pore size distributions of nanofiltration membranes10.1016/j.memsci.2007.09.065 ↗
24. The preparation of PVDF/clay nanocomposites and the investigation of their tribological properties10.1016/j.wear.2008.08.010 ↗
25. TiO2 entrapped nano-composite PVDF/SPES membranes: preparation, characterization, antifouling and antibacterial properties10.1016/j.desal.2011.05.049 ↗
26. Synthesis of layered titanosilicate JDF-L1 for fabrication of composite polyamide 6 film10.1016/j.clay.2015.09.011 ↗
27. A facile strategy to enhance PVDF ultrafiltration membrane performance via self-polymerized polydopamine followed by hydrolysis of ammonium fluotitanate10.1016/j.memsci.2014.03.006 ↗
28. Preparation and characterization of PVDF/TiO2 hybrid membranes with different dosage of nano-TiO210.1016/j.memsci.2011.11.022 ↗
29. Biological removal of nitrogen by a membrane bioreactor-attapulgite clay system in treating polluted water10.1016/j.desal.2013.02.017 ↗
30. Preparation and characterization of polysulfone/organoclay adsorptive nanocomposite membrane for arsenic removal from contaminated water10.1016/j.clay.2016.08.011 ↗
31. Preparation and characterization of PVDF/TiO2 organic–inorganic composite membranes for fouling resistance improvement10.1016/j.memsci.2009.08.003 ↗
32. Enhancement of β phase crystallization and dielectric behavior of kaolinite/halloysite modified poly (vinylidene fluoride) thin films10.1016/j.clay.2014.06.025 ↗
33. Fabrication of composite nanofiltration membrane by incorporating attapulgite nanorods during interfacial polymerization for high water flux and antifouling property10.1016/j.memsci.2017.09.016 ↗
34. Effects of solvent treatment and high-pressure homogenization process on dispersion properties of palygorskite10.1016/j.powtec.2012.11.035 ↗
35. Polymer-matrix nanocomposite membranes for water treatment10.1016/j.memsci.2014.11.019 ↗
36. Insight into fouling behavior of poly (vinylidene fluoride) (PVDF) hollow fiber membranes caused by dextran with different pore size distributions10.1016/j.cjche.2017.04.008 ↗
37. Synthesis and characterization of novel hyperbranched polyimides/attapulgite nanocomposites10.1016/j.compositesa.2013.08.014 ↗
38. Improved hydrophilicity, permeability, antifouling and mechanical performance of PVDF composite ultrafiltration membranes tailored by oxidized low-dimensional carbon nanomaterials10.1039/c2ta01415g ↗
39. Effect of modified attapulgite addition on the performance of a PVDF ultrafiltration membrane10.1016/j.desal.2014.03.007 ↗
40. Preparation of PVDF/hyperbranched-nano-palygorskite composite membrane for efficient removal of heavy metal ions10.3390/polym11010156 ↗
41. Fabrication of magnetic carboxyl-functionalized attapulgite/calcium alginate beads for lead ion removal from aqueous solutions10.1016/j.ijbiomac.2018.08.144 ↗