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Article: Effect of intramolecular interactions on the miscibility windows of PVC blends with modified SAN polymers. (polyvinyl chloride; styrene/acrylonitrile)
- Article from:
- Polymer Engineering and Science
- Article date:
- February 1, 1996
- Author:
CopyrightCOPYRIGHT 1996 Society of Plastics Engineers, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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INTRODUCTION
The formation of a miscible polymer blend is generally the consequence of an exothermic heat of mixing which requires some specific interaction between chemical moieties of two polymers. A number of systems have been reported where hydrogen bonding, ion-dipole, or Lewis acid-base interactions are sufficient to promote the formation of homogeneous phase systems (1-5). However, interesting exceptions to these have been reported for systems which involve either one or two copolymers as components, showing miscibility windows within certain composition ranges of the copolymers (6, 7, 10-14). This is generally explained by the postulation that miscibility ...