| 00:00:00 | Polylactide Characterization Technology Package GPC + DSV |
| 00:01:12 | Polylactide Characterization Technology Package GPC + DSV |
| 00:01:59 | Malvern Polymer Characterization Technology Packages: A Six Part 2012 Webinar Series |
| 00:02:41 | Polymer Life Cycle From Cradle to Grave and Beyond |
| 00:06:11 | Introduction |
| 00:08:08 | Separation Process |
| 00:08:40 | GPC Techniques |
| 00:10:15 | Triple/ Tetra Detection |
| 00:10:42 | Triple/Tetra Detector Array (TDA) |
| 00:13:16 | Principles of Light Scattering - MW |
| 00:13:52 | Triple Tetra Detection by SEC/GPC |
| 00:14:25 | GPC of PLA-1 in Chloroform |
| 00:15:32 | GPC of PLA-2 in Chloroform |
| 00:15:42 | Summary of PLA GPC Data in Chloroform |
| 00:16:27 | What is Dilute Solution Viscosity (DSV)? |
| 00:16:42 | Traditional Measurement |
| 00:17:07 | Nomenclature for Solution Viscosity |
| 00:17:24 | Huggins/Kraemer Plot |
| 00:18:08 | How Does The Two Capillary Viscometer Work? |
| 00:18:50 | Dilute Solution Viscometer (DSV) System |
| 00:18:57 | Summary of PLA DSV Data in Chloroform |
| 00:19:34 | PLA IV Data in Chloroform – GPC vs DSV |
| 00:20:37 | Solvent Enhanced Light Scattering (SELS) |
| 00:23:49 | SELS of Polyhydroxy Alkonate (PHA) Black Line = LALS Signal in THF (dn/dc = 0.06) Green Line = LALS Signal in Chloroform (dn/dc = 0.03) |
| 00:25:04 | GPC of PLA-1 in THF |
| 00:25:27 | GPC of PLA-2 in THF |
| 00:25:36 | Summary of PLA GPC Data in THF |
| 00:26:00 | PLA IV Data – GPC (THF) vs DSV (Chloroform) |
| 00:26:59 | PLA GPC Data – Chloroform vs THF |
| 00:27:19 | SELS for PLA |
| 00:28:29 | SELS for PMTFMA |
| 00:29:00 | Final Conclusions |
| 00:30:38 | Contact Information |
While Polylactide (PLA) is becoming more competitive as a substitute for many polymers in a variety of applications, there is a greater need for more complete characterization in molecular weight, molecular structure, processability and end-use performance. Gel Permeation Chromatography (GPC) also known as Size Exclusion Chromatography (SEC), Flow Injection Polymer Analysis (FIPA), Dilute Solution Viscosity (DSV), and Rheometry are very popular analytical techniques providing such vital and complementary information throughout a polymer life cycle, i.e., from concepts to commercial applications. This webinar will discuss how these techniques are being used in the measurement of molecular weight distribution, branching, viscosity and visco-elastic properties of PLA materials.