Interface modification in an immiscible rod-coil polymer blend using functionalized copolymers and polyelectrolytes /
also been found that the blend rheology manifests a complex
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | also been found that the blend rheology manifests a complex are used to study the effect of shear flow on blend birefringence, dichroism, and optical microscopy measurements blend microstructure. For both types of compatibilizers, blend of a rod-like polymer (Vectra B950) and a flexible Blends of rod-like and flexible-coil polymers are attractive cally, in uncompatibilized blends, the effect of vectra compatibilizers dramatically alter mechanical properties and concentration and domain size on shear modulus is studied. concentration dependent rninima in loss modulus versus concentration. Polyelectrolytes are found to be much more concentrations somewhat higher than the critical micelle direct consequences of this interplay between form and effect of compatibilization on the dispersed phase domain efficient compatibilizers than copolymers apparently because example, heretofore unobserved features, such as for synthesizing molecular composites. In this study, a frequency plots with no corresponding extrema or plateau in has little compatibilizing effect on the rod-coil blends, interplay between macromolecular and form effects. For intrinsic effects. maximum performance is observed at compatibilizer microstructure. Our results show that while prolonged shear poly(styrene-co-maleic anhydride) copolymer and with sodium poly(styrenesulfonate), a polyelectrolyte, we evaluate the polymer (polystyrene) is used to investigate the influence of polymer-polymer specific interactions on interfacial properties and mechanical performance of the blend. Specifi size, size distribution. and blend modulus. Additionally, small amounts of copolymer and polyelectrolyte the storage modulus plots, are reported and shown to be they form stronger bonds at the domain interface. It has While, in blends compatibilized with small amounts of |
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| Item Description: | "Major subject: Chemical Engineering". Vita. |
| Physical Description: | xi, 77 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |