Tunable Nanoporous Membranes With Chemically Tailored
Tunable Nanoporous Membraneswith Chemically Tailored Pore Wallsfrom Triblock Terpolymer TemplatesISDPresented by Jacob L. Weidman1With research from Ryan A. Mulvenna,2 John A. Pople,3Bryan W. Boudouris,2 and William A. Phillip1william.a.phillip.1@nd.edu1Universityof Notre Dame, 2Purdue University, 3Stanford Synchrotron Radiation Lightsource
2Filtration is Size-Selective
3A New Membrane MaterialDesired qualities for ultrafiltration membranes: High flux Good selectivity Mechanical integrity Low foulingPhase inversionSelf-assembledTrack-etched
4Block Copolymers Self-AssembleTheoretical Coil-CoilDiblock Copolymer Phase DiagramRed Polymer MINORITY PHASEHQ229LQ230fRedRed Polymer MAJORITY PHASEN number of segmentsχ interaction parameterf polymer volume fractionQ230HQ229fRedCochran, E. W. et al. Macromolecules 2006, 39, 2449.
5Membrane Cast by SNIPSSNIPS- Self-assembly and Non-solvent Induced Phase SeparationCastDoctor BladeEvaporatePolymer SolutionSolventGlass SlideMembraneSelective LayerSupport LayerSelf-assemblyPrecipitateWater bathSolventNon-solvent
Prior Efforts Limited by Increases toughnessPolystyreneForms matrixPoly(4-vinyl pyridine)pH-responsive, butterminal chemistryPhillip, W. A. et. al. Nano Letters, 2011, 11, 2892-2900.6
7Pore Walls Can be eDecreases brittlenessPolystyreneForms matrixPoly(Dimethylacrylamide)Can be functionalized tospecific applications
8Triblock Polymerization by RAFTRAFT- Reversible Addition-Fragmentation chain Transfer1.31.21.3Low dispersityMetal-freeTolerant ofatmosphericconditions
9Asymmetric Membrane Produced
10A Permeable and Selective Membrane
11Membrane FunctionalizationCastDoctor BladeEvaporatePolymer SolutionSolventGlass SlideFunctionalizationPrecipitateWater bath6M HCl in WaterHeat to 85ºCReact for 2 daysSolventNon-solvent
12Functionalization Alters Pore Chemistry“Click” ChemistryPore walls can be reacted to a varietyof functional groups (pink dots).
13Porous Structure RetainedParentFunctionalizedLess than 4% deviation in average pore size and porosity
14A Selective pH-responsive MembraneParentFunctionalizedParentFunctionalized
tionalizedDry state (SEM)Average- 52 nmPDMAWater soluble AFM to compare wet/dry pore sizes New functional to line pore walls Transport tests for targeted applicationsWet State (MWCO)Parent MembraneEstimated- 8.1 nmFunctionalizedEstimated-2.6 nm
16ConclusionsISDControlled radical polymerization allows for a scalableproduction method of terpolymer with tunable blocklengths and low dispersity.This material produces robust selectivemembranes with a high density of monodispersepores in the self-assembled selective layer.Pore walls have been successfully deprotectedto a functionalizable polyacrylic acid group,lending itself to a variety of applications bysimple chemical conversion.
PhillipJohnPople– � !
Tunable Nanoporous Membranes with Chemically Tailored Pore Walls from Triblock Terpolymer Templates Presented by Jacob L. Weidman1 With research from Ryan A. Mulvenna,2 John A. Pople,3 Bryan W. Boudo
Dynamics of electrolyte solutions confined in nanoporous Membranes benoit.coasne@univ-montp2.fr . (crystallization forces) Beaudoin and Mc Innis experiment (CCR, Vol. 4, p. 139-147, 1974) . Understand thermodynamics and dynamics of the substrate contact layer Introductio n
membrane contactor-based post-combustion capture pilot plant incorporating PEEK-based super hydrophobic nanoporous hollow fiber membrane contactor technology and aMDEA solvent. Task 3: Under this task, PoroGen optimized their PEEK membranes and membrane modules for long-term CO 2 capture operation. Membrane module factors that might
a. Both destructive and constructive b. Destructive c. Constructive d. None of the above 15. Why are plants and lichens important to rocks? a. They physically and chemically weather rocks b. They physically and chemically erode rocks c. They physically and chemically deposit rocks d. They physically and chemically build rocks 16.
Materials Research Innovations Online 130 in system free energy, γ A, where γ is the excess solid-liquid interface tension and A is the specific area of the nanoporous material, often in the range of 102 – 103 m2/g. Typically, γ is at the level of 10 – 102 mJ/m2, and thus the energy absorption efficiency of the nanoporous solid-
ScIEntIfIc REPORTS (2018)8:6761 1.1s112122 1 www.nature.comscientificreports Gaining new insights into nanoporous gold by mining and analysis of published images Ian McCue1, Joshua Stuckner2, Mitsu Murayama2 & Michael J. Demkowicz1 One way of expediting materials development is to decrease the need for new experiments by making
CLAY NANOPARTICLES EFFECTS ON PERFORMANCE AND MORPHOLOGY OF POLY(VINYLIDENE FLUORIDE) MEMBRANES A . (PVDF-Nanoclay and PVDF-PVP-Nanoclay) membranes is presented. All membranes were synthesized by the phase inversion process, using 18% PVDF, n-methylpyrrolidone as solvent and water as the non-solvent. Demineralized water cross-flow permeation tests were conducted to evaluate the membranes .
A membrane is a thin sheet or layer of tissue that covers a structure or lines a cavity. A.Match these terms with the Mucous membranes Serous membranes correct statement or definition: Other membranes 1. Line cavities that open to the outside of the body. 2. Line the trunk cavities and cover the organs located within the trunk cavities. 3.
enFakultätaufAntragvon Prof. Dr. ChristophBruder Prof. Dr. DieterJaksch Basel,den16. Oktober2012, Prof. Dr .
