Basic principles of particle size analysis: the techniques

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00:00:00 Introduction
00:00:36 3 parts – this is Part 2
00:00:49 Part 2 - The basic techniques for PSA
00:01:15 Sieves/screening
00:01:30 Sieves
00:02:20 Grizzly Isle of Mull January 1999
00:03:02 Georgius Agricola (1530) De Re Metallica
00:03:38 Egyptians - Winnowing
00:04:13 Sieves
00:04:59 Sieves
00:05:46 Sieving - a common question
00:06:37 Sieving - a common question
00:08:11 This particle will also pass the screen
00:09:52 Maximum dimension of a unit cube
00:10:44 What will/may a square screen pass?
00:11:05 Sieving
00:11:43 Sieving
00:12:36 So where did that quote really originate? Heywood was right again!
00:13:15 AIME March 1907 No 14
00:14:02 Sieving - a common question
00:14:46 Sieves
00:15:05 Imaging/image analysis and microscopy
00:15:23 Microscopy and Image analysis “Seeing is believing” (?)
00:16:29 Image analysis
00:17:43 Image analysis - wealth of information
00:17:58 Image analysis - wealth of information Scattergram - relate two parameters
00:18:12 Shape descriptors
00:18:50 Number based distribution : monitoring fines in recycled abrasive material
00:19:23 Eric Pirard Private Communication (October 5th 2010)
00:19:45 Harold Heywood
00:20:10 Microscopy
00:21:19 Thus…
00:21:47 Heywood again – take care with the lower end
00:24:15 Remember barium titanate? The aggregation and form are important A “PSD” may be suspect on 1 image
00:24:35 Sedimentation
00:25:17 Sedimentation
00:25:56 Settling rate
00:26:22 Care!
00:27:01 (George Gabriel) Stokes’ Law
00:28:06 Comparing laser diffraction and sedimentation
00:28:46 Comparing laser diffraction and sedimentation for plate-like particles
00:29:07 Sedimentation
00:29:19 Sedimentation Precision
00:30:05 Sedimentation
00:30:28 ASTM E2490-09 Standard Guide for Measurement of Particle Size Distribution of Nanomaterials in Suspension by Photon Correlation Spectroscopy (PCS)
00:30:55 Sedimentation
00:31:23 Electrical Sensing Zone
00:32:06 Before the Coulter Counter Blood cell counting
00:32:41 Electrical Sensing Zone - (Coulter Counter)
00:33:17 Electrical Sensing Zone - (Coulter Counter)
00:34:03 M D Graham “The Coulter Principle: Foundation of an Industry” Journal of the Association for Laboratory Automation Vol. 8, Issue 6 , pp 72-81, (2003)
00:34:16 Electrical Sensing Zone - (Coulter Counter)
00:34:45 Electrical Sensing Zone - (Coulter Counter)
00:34:58 It’s a gas (BET)
00:35:40 Gas adsorption techniques (BET)
00:37:05 Gas adsorption techniques (BET)
00:37:21 Gas adsorption techniques (BET)
00:37:42 Gas adsorption techniques (BET) From: A F Rawle “Micron sized nano-materials” Powder Technology Vol.174, Issues 1-2, 16 May 2007, Pages 6 - 9
00:38:08 Gas adsorption techniques (BET)
00:38:30 Gas adsorption techniques (BET)
00:38:54 Small-Angle X-Ray Scattering (SAXS)
00:39:29 So how can I select a technique?
00:39:40 Thank you for viewing and listening
This presentation explores particles and particle size, how particle sizing techniques deal with a particle, and how the measurement of particle size and particle size distributions can be achieved.