Presentation is loading. Please wait.

Presentation is loading. Please wait.

Theory Instrumentation Applications Theory Instrumentation Applications SurPASS Electrokinetic Analyzer Zeta Potential Measurement for Solid Samples.

Published byLindsey Knight Modified over 9 years ago

Similar presentations

Presentation on theme: "Theory Instrumentation Applications Theory Instrumentation Applications SurPASS Electrokinetic Analyzer Zeta Potential Measurement for Solid Samples."— Presentation transcript:

1 Theory Instrumentation Applications Theory Instrumentation Applications SurPASS Electrokinetic Analyzer Zeta Potential Measurement for Solid Samples

2 © Anton Paar GmbH 2006 Surface and Interface Analysis Spectroscopy  Secondary Ion Mass Spectrometry  X-ray Photoelectron Spectroscopy  Energy Dispersive X-ray fluorescence  Raman spectroscopy  Ion Scattering Spectroscopy  IR, UV/VIS spectroscopy Microscopy  Scanning Electron Microscopy  Transmission Electron Microscopy  Atomic Force Microscopy  Confocal Laser Scanning Microscopy  Light microscopy Interface analysis  Contact angle (static, dynamic)  Surface tension  Streaming potential  Surface spectroscopy  Gas adsorption Analysis of …  … chemical composition of surface  … surface topography  … morphology of interfaces  … surface energy and (de-)wetting

3 © Anton Paar GmbH 2006 Streaming Potential Method Liquid phase (electrolyte solution) pumped through the measuring cell (containing sample)  pressure difference  relative movement of the charges in the electrochemical double layer  detection of streaming potential  U =  U(  p) electrode sample flowing liquid

4 © Anton Paar GmbH 2006 - - - - -- - - - - - + + + + + ++ + Electrochemical double layer at equilibrium - - - - -- - - - - - + + + + + + ++ + Fluid Flow Electrolyte flow forced across solid surface - - - - -- - - - - - + + + + + ++ + Fluid Flow Ion accumulation causes potential difference - - - - -- - - - - - + + + + + ++ + Backflow Current Potential difference causes backflow current Mechanism of Streaming Potential

5 © Anton Paar GmbH 2006 SurPASS Measurement Set-Up RS 232 VisioLab for SurPASS SurPASS Electrokinetic Analyzer Conductivity pH

6 © Anton Paar GmbH 2006 Cylindrical Cell Natural and technical fibres Hair Textile fibres and fabrics Powder samples with > 25 µm size Particle and granular samples electrolyte inlet/outlet electrolyte inlet/outlet perforated disc sample electrode

7 © Anton Paar GmbH 2006 Clamping Cell 25  5 mm 2 electrolyte inlet/outlet spacer sample Flat membranes Foils Polymer sheets Rigid samples of different thickness and shape with a flat surface

8 © Anton Paar GmbH 2006 Pressure Ramp Measurement  Electrolyte flow from left  right  Measurement of streaming potential at various differential pressure  Reversal of flow direction  Linear regression for evaluation of “pressure ramp” slope  =   dU dp    0  0

9 © Anton Paar GmbH 2006 SurPASS Applications in... Polymer industry Synthetic fibre and textile industry Processing of non-metallic, inorganic materials Mining industry Printing industry Membrane and filtration technology Biomaterials Semiconductor industry Paint and varnish industry Cosmetics industry etc.

10 © Anton Paar GmbH 2006 Textile purification Fibre swelling Hydrophobicity Particle retention Glass fibre finishing Characterization of sizing agents Surfactant interaction etc. Textile and Technical Fibres

11 © Anton Paar GmbH 2006 Solution with SurPASS Time resolved measurement of treated polyester fibres in Cylindrical Cell Characterization of Polyester Fibre Preparation Surfactant Zeta potential (mV) T = 0 minT = 15 minT = 60 min untreated-35.10-34.93 anionic -55.49-57.49 -48.68-51.75-48.36 cationic -22.22-28.22-32.24 -24.92-29.41 -18.32-18.15-16.8 -13.17-16.11 non-ionic-37.32-36.87 Field of Application Treatment of synthetic fibres with surface- active compounds after spinning to assure textile processing Challenge Characterization of these surface-active compounds to forecast textile processibility of fibres

12 © Anton Paar GmbH 2006 Glass Fibre Finishing  sv = 49.6 mJ/m 2  sv = 47.8 mJ/m 2 Electrokinetic measurement shows higher sensitivity to changes in surface chemistry of glass fibres than contact angle measurement

13 © Anton Paar GmbH 2006 Untreated Shampoo Rinse Conditioner Rinse Zeta Potential of Human Hair Source: E.D.Goddard, P.S.Leung, Sonderdruck aus Parfümerie und Kosmetik 68 (1987)

14 © Anton Paar GmbH 2006 Surface modification Lacquer adhesion Composite materials Hydrophobic vs. hydrophilic behaviour Protein adsorption in biomaterials engineering Wetting and de-wetting behaviour etc. Polymer Characterization

15 © Anton Paar GmbH 2006 Hydrophilisation of Polyolefines Aim Modification of the polymer surface properties with retention of the bulk behaviour Example Introduction of acidic surface groups

16 © Anton Paar GmbH 2006 Plastics for Medical Application Field of Application Membrane material for haemodialysis Challenge Compatibility of membrane material with human organism Solution with SurPASS Zeta potential determination of capillary membranes in Cylindrical Cell and flat membranes in Clamping Cell Examination of plastics surface in natural aqueous environment

17 © Anton Paar GmbH 2006 Metal Oxide and Semiconductor Processes Photoresist coating Silicon wafer cleaning Metal layer characterization Chemical Mechanical Polishing Particle adhesion etc.

18 © Anton Paar GmbH 2006 Electrokinetic Measurement of Aluminium Sheets Treatment  Alkaline pickled with NaOH and Na 2 CO 3 and boiled in H 2 0 for 10 min  Alkaline pickled only  Alkaline and then acid pickled with H 2 SO 4 and H 2 O 2 Results  Alkaline pickling and boiling introduces only few dissociable surface groups  with no plateau in zeta potential  and IEP in the neutral range  Procedure produces AlOOH (Böhmit) on Al(OH) 3 (Bayerit) layer  More dissociable surface groups without boiling  plateau in zeta potential at low pH  IEP shifted towards higher pH Source: C. Bellmann et al, Fresenius J Anal Chem 358 (1997) 255

19 © Anton Paar GmbH 2006 Electrokinetic Measurement of Aluminium Sheets Treatment  Alkaline pickled with NaOH and Na 2 CO 3 and boiled in H 2 0 for 10 min  Alkaline pickled only  Alkaline and then acid pickled with H 2 SO 4 and H 2 O 2  Application of organic oligomer material with acidic functional groups Results  IEP changes to lower pH  Ion adsorption processes dominate  Oligomer removed for alkaline/acid pickled Al surface at pH > 7 Source: C. Bellmann et al, Fresenius J Anal Chem 358 (1997) 255

20 © Anton Paar GmbH 2006 Particle Deposition on Si 3 N 4 Wafer Sample Treatment Ratio IEP Si/NSi/ON/O Piranha0.772.993.883.7 Piranha + BOE0.813.784.665.3 Piranha, BOE + H 3 PO 4 0.802.533.163.5 Zeta potential depends on cleaning treatment of LPCVD Si 3 N 4 wafers Correlation between N/O ratio (XPS data) and IEP Contamination of wafer surface with Polystyrene particles follows the zeta potential Source: D.Jan, S.Raghavan, Proc. 3 rd Int. Symp. on Cleaning Technology in Semiconductor Device Manufacturing (1993)

21 © Anton Paar GmbH 2006 CMP Slurry / Cu Surface Interaction cationicdodecyl trimethyl ammounium bromide non-ionicMarlipal O13/100 (C 13 -alcohol polyethylene glycol ether) anionicsodium dodecyl sulphate

22 © Anton Paar GmbH 2006 Partial List of EKA Customers

Download ppt "Theory Instrumentation Applications Theory Instrumentation Applications SurPASS Electrokinetic Analyzer Zeta Potential Measurement for Solid Samples."

Similar presentations

OFFLINE COMPOSITION MEASURING SENSORS

OFFLINE COMPOSITION MEASURING SENSORS
Module A-2: SYNTHESIS & ASSEMBLY

Module A-2: SYNTHESIS & ASSEMBLY
Science PowerPoint: William Freddy Curle. Definitions Electrode n. 1. A solid electric conductor through which an electric current enters or leaves an.

Science PowerPoint: William Freddy Curle. Definitions Electrode n. 1. A solid electric conductor through which an electric current enters or leaves an.
Removal of Cu(II) ions from aqueous solution effluent using Melamine-Formaldehyde-DTPA resin in a fixed-bed up-flow column By Ahmad Baraka Supervisors.

Removal of Cu(II) ions from aqueous solution effluent using Melamine-Formaldehyde-DTPA resin in a fixed-bed up-flow column By Ahmad Baraka Supervisors.
Investigation of the Catalytic Activity of Plasma-Treated Fe, Ni, and Co Foil for Water Splitting Nick Lavrov, Olivia Watson.

Investigation of the Catalytic Activity of Plasma-Treated Fe, Ni, and Co Foil for Water Splitting Nick Lavrov, Olivia Watson.
NSF/SRC Engineering Research Center for Environmentally Benign Semiconductor Manufacturing Raghavan 1 Wet Etching and Cleaning: Surface Considerations.

NSF/SRC Engineering Research Center for Environmentally Benign Semiconductor Manufacturing Raghavan 1 Wet Etching and Cleaning: Surface Considerations.
AMCF Materials Characterization School 2012 X-Ray Photoelectron Spectroscopy Tim Morgan.

AMCF Materials Characterization School 2012 X-Ray Photoelectron Spectroscopy Tim Morgan.
ANALYTIC METHODS II. PART Jana Švarcová.  Chromatography  Electrophoresis  Potentiometry  Titration  Spectrophotometry.

ANALYTIC METHODS II. PART Jana Švarcová.  Chromatography  Electrophoresis  Potentiometry  Titration  Spectrophotometry.
Coagulation CE 547. Overview Turbidity in surface waters is caused by colloidal clay particles. Color in water is caused by colloidal forms of Fe, Mn,

Coagulation CE 547. Overview Turbidity in surface waters is caused by colloidal clay particles. Color in water is caused by colloidal forms of Fe, Mn,
Lecture 4: Characterizing Hybrids. First step in characterizing a hybrid: Use your senses (take pictures to document) – What color? Does it fluoresce.

Lecture 4: Characterizing Hybrids. First step in characterizing a hybrid: Use your senses (take pictures to document) – What color? Does it fluoresce.
Surface and Interface Chemistry  Solid/liquid Interface Valentim M. B. Nunes Engineering Unit of IPT 2014.

Surface and Interface Chemistry  Solid/liquid Interface Valentim M. B. Nunes Engineering Unit of IPT 2014.
NSF-ITR Meeting 10-05 Miniaturized Sensors Air molecules aerosols Water molecules cells, viruses.

NSF-ITR Meeting Miniaturized Sensors Air molecules aerosols Water molecules cells, viruses.
X-Ray Photoelectron Spectroscopy (XPS)

X-Ray Photoelectron Spectroscopy (XPS)
X-Ray Photoelectron Spectroscopy (XPS)

X-Ray Photoelectron Spectroscopy (XPS)
Cell Adhesion to Polymer Surfaces George Tulevski Colloids and Surface phenomena.

Cell Adhesion to Polymer Surfaces George Tulevski Colloids and Surface phenomena.
Zeta potential measurement

Zeta potential measurement
Surface Characterization by Spectroscopy and Microscopy

Surface Characterization by Spectroscopy and Microscopy
The Deposition Process

The Deposition Process
Surface Characterization Techniques Topics: –Contact Angle Analysis –Light Microscopy –X-ray Photoelectron Spectroscopy (XPS) –Fourier-Transform Infrared.

Surface Characterization Techniques Topics: –Contact Angle Analysis –Light Microscopy –X-ray Photoelectron Spectroscopy (XPS) –Fourier-Transform Infrared.
Department of Electrical Engineering, National Taiwan University NOVEL WAFER BONDING TECHNOLOGY SURVEY Po-Wen Chen Department of Electrical Engineering.

Department of Electrical Engineering, National Taiwan University NOVEL WAFER BONDING TECHNOLOGY SURVEY Po-Wen Chen Department of Electrical Engineering.

Similar presentations

Ads by Google