Flow induced formation of dual-phase continuity in polymer blends and alloys: Part I

Jørgen Lyngaae-Jørgensen, E.A. Chtcherbakova, L.A. Utracki

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

Abstract

A hypothesis for formation of bi-continuous phase structures in immiscible polymer blends is proposed. It is based on the observation that a critical volume fraction phi(cr) for the dual continuity of phases may be calculated considering the geometry of the dispersed phase. The knowledge of the form of discrete domains at volume fractions phi < phi(cr) and the probability that two close neighbor domains will form a strong fused connection are sufficient to calculate phi(cr). Furthermore, it can be predicted that phi(cr) should increase with stabilization of the interface. A comparative study showed that an addition of block copolymer may narrow the volume fraction range where bi-continuous phase structures are formed. Both annealing in the molten stale and shearing history influence the measured phi(cr) for formation of bi-continuous phase structure in amorphous immiscible polymer blends.
Original languageEnglish
Title of host publicationProceedings on Polyblends '97 / SPE RETEC : International Symposium on Polymer Blends, Alloys and Filled Systems
Place of PublicationMontreal
PublisherIMI,National Research Council Canada
Publication date1997
Pages282-313
Publication statusPublished - 1997
EventInternational Symposium on Polymer Blends, Alloys and Filled Systems (POLYBLENDS '97) - Boucherville, Montreal, Canada
Duration: 9 Oct 199710 Oct 1997

Conference

ConferenceInternational Symposium on Polymer Blends, Alloys and Filled Systems (POLYBLENDS '97)
CountryCanada
CityBoucherville, Montreal
Period09/10/199710/10/1997

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