Development and use of a turbidity analyzer for studying the solution crystallization of polyolefins
Date
2008
Authors
Van Reenen A.J.
Rohwer E.G.
Walters P.
Lutz M.
Brand M.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Cooling a solution of a crystalline polyolefin from 140°C to room temperature causes the dissolved polymer to crystallize. If a laser beam passes through this solution, the crystallization will cause the beam to scatter, which thereby decreases the intensity of the beam. With this principle, it is possible to follow the crystallization of polyolefins under controlled cooling. An instrument capable of doing these analyses was manufactured, and several different polyolefins were analyzed. The effect of the experimental parameters are illustrated for both cooling and reheating experiments. In addition, an interesting dependence on molecular weight was also observed for a series of metallocene polypropylenes. © 2008 Wiley Periodicals, Inc.
Description
Keywords
Cooling, Crystallization, Dissolution, Nanocrystalline alloys, Organometallics, Polyolefins, Polypropylenes, Turbidity, Controlled cooling, Experimental parameters, Intensity of the beam, Light scattering, Metallocene catalysts, Metallocene polypropylenes, Polyolefin, Room temperatures, Solution crystallization, Solution properties, Polymers, cooling, crystallization, molecular weight, polyolefin, polypropylene
Citation
Journal of Applied Polymer Science
109
5
109
5