Viscosity Modification of Polymerizable Bicontinuous Microemulsion by Controlled Radical Polymerization for Membrane Coating Applications

被引：3

作者：

Gukelberger, Ephraim ^{[1
,2
,3
]}

Hitzel, Christian ^{[2
]}

Mancuso, Raffaella ^{[1
]}

Galiano, Francesco ^{[3
]}

Bruno, Mauro Daniel Luigi ^{[4
]}

Simonutti, Roberto ^{[5
]}

Gabriele, Bartolo ^{[1
,3
]}

Figoli, Alberto ^{[3
]}

Hoinkis, Jan ^{[2
]}

机构：

[1] Univ Calabria, Dept Chem & Chem Technol, Lab Ind & Synthet Organ Chem LISOC, I-87036 Arcavacata Di Rende, CS, Italy

[2] Karlsruhe Univ Appl Sci, Ctr Appl Res CAR, D-76133 Karlsruhe, Germany

[3] Natl Res Council ITM CNR, Inst Membrane Technol, I-87036 Arcavacata Di Rende, CS, Italy

[4] Univ Calabria, Dept Phys, I-87036 Arcavacata Di Rende, CS, Italy

[5] Univ Milano Bicocca, Dept Mat Sci, I-20126 Milan, Italy

来源：

MEMBRANES | 2020年 / 10卷 / 09期

基金：

欧盟地平线“2020”;

关键词：

viscosity modification; polymerizable bicontinuous microemulsion; controlled radical polymerization; membrane coating; wastewater treatment; SOLID-STATE NMR; SURFACE MODIFICATION; CROSS-POLARIZATION; NANOPARTICLES; C-13;

D O I：

10.3390/membranes10090246

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Membrane modification is becoming ever more relevant for mitigating fouling phenomena within wastewater treatment applications. Past research included a novel low-fouling coating using polymerizable bicontinuous microemulsion (PBM) induced by UV-LED polymerization. This additional cover layer deteriorated the filtration capacity significantly, potentially due to the observed high pore intrusion of the liquid PBM prior to the casting process. Therefore, this work addressed an innovative experimental protocol for controlling the viscosity of polymerizable bicontinuous microemulsions (PBM) before casting on commercial ultrafiltration (UF) membranes. Prior to the coating procedure, the PBM viscosity modulation was carried out by controlled radical polymerization (CRP). The regulation was conducted by introducing the radical inhibitor 2,2,6,6-tetramethylpiperidine 1-oxyl after a certain time (CRP time). The ensuing controlled radical polymerized PBM (CRP-PBM) showed a higher viscosity than the original unpolymerized PBM, as confirmed by rheological measurements. Nevertheless, the resulting CRP-PBM-cast membranes had a lower permeability in water filtration experiments despite a higher viscosity and potentially lower pore intrusion. This result is due to different polymeric structures of the differently polymerized PBM, as confirmed by solid-state nuclear magnetic resonance (NMR) investigations. The findings can be useful for future developments in the membrane science field for production of specific membrane-coating layers for diverse applications.

引用

页码：1 / 16

页数：16