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Dryblending behavior of commercial polyvinyl chloride

1964; Wiley; Volume: 8; Issue: 3 Linguagem: Inglês

10.1002/app.1964.070080315

1097-4628

L. T. Carleton, E. Mishuck,

Advanced Polymer Synthesis and Characterization

Journal of Applied Polymer ScienceVolume 8, Issue 3 p. 1221-1255 Article Dryblending behavior of commercial polyvinyl chloride L. T. Carleton, L. T. Carleton Aerojet-General Corporation, Azusa, California, and General Tire and Rubber Company, Akron, OhioSearch for more papers by this authorE. Mishuck, E. Mishuck Aerojet-General Corporation, Azusa, California, and General Tire and Rubber Company, Akron, OhioSearch for more papers by this author L. T. Carleton, L. T. Carleton Aerojet-General Corporation, Azusa, California, and General Tire and Rubber Company, Akron, OhioSearch for more papers by this authorE. Mishuck, E. Mishuck Aerojet-General Corporation, Azusa, California, and General Tire and Rubber Company, Akron, OhioSearch for more papers by this author First published: May/June 1964 https://doi.org/10.1002/app.1964.070080315Citations: 7AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Ease of processing suspension-polymerized polyvinyl chloride (PVC) is related to its ability to accept sufficient plasticizer, while remaining a dry, free-flowing powder. The successful incorporation of plasticizer, termed cold preblending or hot dryblending, depends upon basic physicochemical factors. Cold preblending corresponds to a purely geometrical filling of intraparticle pores and fissures, while hot dryblending depends additionally upon a time-dependent absorption. Quantitative laboratory tests for these two effects were developed and standardized. When applied to experimental and commercial lots of PVC and their fractions, the tests gave results which showed slight correlation with gross properties of the particles. However, intercorrelation between tests for cold preblending and hot dryblending was strong, indicating that the same factors may be responsible for both. The tests also provided good ratings of polymers for actual processing behavior. It is possible to control particle geometry via the process variables of suspension polymerization, and thence to regulate cold preblending behavior; the effects on hot dryblending are not as clear. Post-polymerization grinding markedly alters the PVC particle surfaces and can substantially improve hot dryblending capacity. Severe grinding is needed to change particle geometry enough for any large improvement of cold preblending. Citing Literature Volume8, Issue3May/June 1964Pages 1221-1255 RelatedInformation