The use of a temperature programmable brabender mixing head for the evaluation of the processing characteristics of poly(vinyl chloride)
- 1 January 1975
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science, Part B
- Vol. 11 (2), 251-279
- https://doi.org/10.1080/00222347508217863
Abstract
A technique is described for determining the temperature-torque profile of a PVC compound in a Brabender Plasticorder mixing chamber from room temperature to the temperature at which degradation occurs. Within this temperature range many PVC compounds show three characteristic peaks in the torque temperature trace. It is suggested that these three peaks are associated with the breakdown of the PVC powder particles (Stage III, 100 to 150 μm), micro-granules (Stage II, 0.5 to 2 μm), and primary particles (Stage I, 10 nm), respectively. The positions and shapes of these peaks are functions of the compound being investigated and as such can be used to characterize the processing behavior of the compound. The greater part of the work has been carried out using suspension polymers but application of the technique to mass and emulsion polymers suggests that the conclusions are applicable to all polymers which possess a particulate substructure.Keywords
This publication has 8 references indexed in Scilit:
- The Processing Effect on the Morphology of Plasticized and Unplastized Polyvinyl ChlorideInternational Journal of Polymeric Materials and Polymeric Biomaterials, 1972
- Polyvinylchloride melt rheology II—the influence of molecular weight on flow activation energyPolymer Engineering & Science, 1970
- Particle size and molecular weight effects on the melt flow of emulsion PVCPolymer Engineering & Science, 1969
- The significance of a particle‐flow process in PVC meltsPolymer Engineering & Science, 1968
- Capillary extrudate puff‐up of PVC and other structural meltsJournal of Applied Polymer Science, 1968
- Poly(vinyl Chloride) Melt Rheology and Flow Activation EnergyTransactions of the Society of Rheology, 1967
- A rheological interpretation of torque‐rheometer dataPolymer Engineering & Science, 1967
- Pressure Porosimeter and Determination of Complete Macropore-Size Distributions. Pressure Porosimeter and Determination of Complete Macropore-Size DistributionsIndustrial & Engineering Chemistry Analytical Edition, 1945