記録された日時: May 14 2014

Duration: 43 minutes 53 seconds

Long before 'nanoparticle' became a common term, polymer scientists were already working at the nano scale (<100nm) with polymer macromolecules. Determining the accurate size at that scale is a challenge and often different applications will require different technical solutions. In the second webinar in this series, we will look at measurement of polymer molecular size in solution. The focus is on light scattering techniques including DLS and MALS.
Table of contents
1. Polymer molecular size - the original nanoparticles
01:32
2. Polymer solution characterization - Part 2. Polymer molecular size - the original nanoparticles?
00:26
3. Polymer molecular size - the original nanoparticles?
00:30
4. Polymer is a composite of the Greek words poly and meros, meaning “many parts.”
01:10
5. The importance of molecular size in solution
03:16
6. Molecular weight vs. Molecular size
02:11
7. Static light scattering vs. Dynamic light scattering
03:15
8. DLS Instrument Components
00:48
9. Intensity Fluctuations and Brownian Motion
00:36
10. Correlation in Dynamic Light Scattering
00:22
11. Correlation in Dynamic Light Scattering
00:18
12. Correlation: Small Particles, Rapid Fluctuations
00:08
13. Correlation:Small Particles, Rapid Fluctuations
00:11
14. Correlation:Small Particles, Rapid Fluctuations
00:21
15. Correlation:Small Particles, Rapid Fluctuations
00:07
16. Correlation:Small Particles, Rapid Fluctuations
00:02
17. Correlation:Small Particles, Rapid Fluctuations
00:10
18. Correlation Functions
00:44
19. Correlation Functions
00:40
20. DLS measurement of polystyrene in toluene
00:55
21. Batch Mw measurement
01:35
22. Static Light Scattering
01:29
23. MALS
02:38
24. Molecular weight and size using MALS
01:23
25. Molecular weight and size by MALS
01:21
26. Angular dependence in PS235k
00:22
27. Molecular Size Determination from GPC/SEC measurements.
00:23
28. Molecular size
01:28
29. BSA
00:22
30. BSA
02:01
31. Complex polysaccharide
00:23
32. Complex polysaccharide
03:02
33. Determining molecular size - summary
01:16
34. For more information ……
00:34
35. Molecular size
06:38
36. Contact Information
01:16