Publications
254 results found
Elliniadis S, Higgins JS, Clarke N, et al., 1997, Phase diagram prediction for thermoset/thermoplastic polymer blends, POLYMER, Vol: 38, Pages: 4855-4862, ISSN: 0032-3861
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- Citations: 21
Clarke N, McLeish TCB, Pavawongsak S, et al., 1997, Viscoelastic effects on the early stages of phase separation in polymer blends, MACROMOLECULES, Vol: 30, Pages: 4459-4463, ISSN: 0024-9297
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- Citations: 27
Kato S, Tsujita Y, Yoshimizu H, et al., 1997, Characterization and CO2 sorption behaviour of polystyrene/polycarbonate blend system, POLYMER, Vol: 38, Pages: 2807-2811, ISSN: 0032-3861
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- Citations: 31
Arrighi V, Higgins JS, 1997, Molecular dynamics of a main-chain liquid crystalline polyester below the crystalline to nematic phase transition, JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, Vol: 93, Pages: 1605-1612, ISSN: 0956-5000
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- Citations: 12
Soontaranum W, Higgins JS, Papathanasiou TD, 1997, Rheology and thermodynamics in partially miscible polymer blends (vol 67, pg 191, 1996), JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, Vol: 69, Pages: 109-109, ISSN: 0377-0257
Hermes HE, Higgins JS, Bucknall DG, 1997, Investigation of the melt interface between polyethylene and polystyrene using neutron reflectivity, POLYMER, Vol: 38, Pages: 985-989, ISSN: 0032-3861
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- Citations: 24
Soontaranun W, Higgins JS, Papathanasiou TD, 1997, Study of the effect of flow on partially miscible polymer blends, Symposium on 1997 Jubilee Research Event, Publisher: INST CHEMICAL ENGINEERS, Pages: 349-351
Elliniadis S, Higgins JS, 1996, Phase separation in thermoplastic - Thermoset polymer blends, 5th European Symposium on Polymer Blends, Publisher: WILEY-V C H VERLAG GMBH, Pages: 55-61, ISSN: 1022-1360
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- Citations: 5
Soontaranum W, Higgins JS, Papathanasiou TD, 1996, Rheology and thermodynamics in partially miscible polymer blends, Workshop on Unresolved Experimental Dilemmas in the Dynamics of Complex Fluids, Publisher: ELSEVIER SCIENCE BV, Pages: 191-212, ISSN: 0377-0257
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- Citations: 17
Cloke VM, Higgins JS, Phoon CL, et al., 1996, Poiseuille geometry shear flow apparatus for small-angle scattering experiments, REVIEW OF SCIENTIFIC INSTRUMENTS, Vol: 67, Pages: 3158-3163, ISSN: 0034-6748
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- Citations: 13
Arrighi V, Higgins JS, 1996, Side group rotations in amorphous polymers, International Workshop on Quasielastic Neutron Scattering (QENS 95), Publisher: ELSEVIER SCIENCE BV, Pages: 1-9, ISSN: 0921-4526
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- Citations: 23
Soontaranun W, Higgins JS, Papathanasiou TD, 1996, Shear flow and the phase behaviour of polymer blends, FLUID PHASE EQUILIBRIA, Vol: 121, Pages: 273-292, ISSN: 0378-3812
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- Citations: 23
Schipp C, Hill MJ, Barham PJ, et al., 1996, Ambiguities in the interpretation of small-angle neutron scattering from blends of linear and branched polyethylene, POLYMER, Vol: 37, Pages: 2291-2297, ISSN: 0032-3861
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- Citations: 47
Young AM, Timbo AM, Higgins JS, et al., 1996, Thermodynamics of aggregation in associating ionomer solutions, POLYMER, Vol: 37, Pages: 2701-2708, ISSN: 0032-3861
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- Citations: 12
Young AM, Higgins JS, Peiffer DG, et al., 1996, Effect of aggregation on the single-chain dimensions of sulfonated polystyrene ionomers in xylene, POLYMER, Vol: 37, Pages: 2125-2130, ISSN: 0032-3861
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- Citations: 6
Fernandez ML, Higgins JS, Richardson SM, 1996, Polymer blend under shear flow: A thermodynamic study, International Conference on Advances in Materials and Processing Technologies (AMPT 93), Publisher: ELSEVIER SCIENCE SA LAUSANNE, Pages: 807-819, ISSN: 0924-0136
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- Citations: 12
Arrighi V, Higgins JS, Abis L, et al., 1996, Characterization of a main-chain semiflexible liquid crystalline polymer: Degree of orientational order, POLYMER, Vol: 37, Pages: 141-148, ISSN: 0032-3861
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- Citations: 8
Soontaranun W, Higgins JS, Papathanasiou TD, 1995, Some aspects of flow-induced mixing and phase-separation during processing of polymer blends, International SAMPE Technical Conference, Vol: 27, Pages: 197-207
Partially miscible polymer blends are characterised by the occurrence of homogeneous or multi-phase microstructures depending on the prevailing conditions of composition, temperature, pressure and flow. The capability to deliberately shift their phase diagram through the application of flow is of particular interest in manufacturing, since it opens up a range of opportunities for the generation of products with 'controllably inhomogeneous' microstructure through 'smart processing'. Key in this, is the ability to quantify the effect of flow on the phase diagram. This work presents a theoretical analysis of this problem along with supporting experimental evidence. This analysis is in qualitative agreement with experimental evidence of shear-induced mixing in SAN/PMMA blends. The presented analysis seems to indicate that by determining the compositional dependence of blend viscosity one may be able to predict the direction in which shear might shift the phase diagram.
FERNANDEZ ML, HIGGINS JS, 1995, EFFECT OF FLOW ON POLYMER-POLYMER MISCIBILITY, 35th IUPAC International Symposium on Macromolecules (MACROAKRON 94), Publisher: HUTHIG & WEPF VERLAG, Pages: 985-996, ISSN: 1022-1360
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- Citations: 3
ARRIGHI V, HIGGINS JS, BURGESS AN, et al., 1995, ROTATION OF METHYL SIDE-GROUPS IN POLYMERS - A FOURIER-TRANSFORM APPROACH TO QUASI-ELASTIC NEUTRON-SCATTERING .2. POLYMER BLENDS, MACROMOLECULES, Vol: 28, Pages: 4622-4630, ISSN: 0024-9297
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- Citations: 21
ARRIGHI V, HIGGINS JS, BURGESS AN, et al., 1995, ROTATION OF METHYL SIDE-GROUPS IN POLYMERS - A FOURIER-TRANSFORM APPROACH TO QUASI-ELASTIC NEUTRON-SCATTERING .1. HOMOPOLYMERS, MACROMOLECULES, Vol: 28, Pages: 2745-2753, ISSN: 0024-9297
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- Citations: 53
FERNANDEZ ML, HIGGINS JS, RICHARDSON SM, 1995, FLOW INSTABILITIES IN POLYMER BLENDS UNDER SHEAR, POLYMER, Vol: 36, Pages: 931-939, ISSN: 0032-3861
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- Citations: 25
YOUNG AM, HIGGINS JS, PEIFFER DG, et al., 1995, EFFECT OF SULFONATION LEVEL ON THE SINGLE-CHAIN DIMENSIONS AND AGGREGATION OF SULFONATED POLYSTYRENE IONOMERS IN XYLENE, POLYMER, Vol: 36, Pages: 691-697, ISSN: 0032-3861
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- Citations: 30
Chen ZJ, Wu R, Shaw MT, et al., 1995, Rheo‐Optical behavior of binary polymer blends: The effect of simple shear flow on phase behavior, Pages: 92-99, ISSN: 0032-3888
The phase behavior of polymer blends under simple shear flow has been studied using a custom‐designed rheo‐optical system consisting of a two‐dimensional small‐angle light scattering (SALS) device incorporated into a conventional rheometer. Two‐dimensional SALS images were gathered for model polymer blend systems with different quiescent phase behavior: polystyrene/polyisobutylene (PS/PIB) that exhibits upper critical solution temperature phase behavior and polystyrene/poly(vinyl methyl ether) (PS/PVME) that shows lower critical solution temperature phase behavior. For the PS/PIB blend, shear‐induced phase mixing occurred at a critical shear rate. Below that critical shear rate, the dispersed phase was highly elongated parallel to the flow direction. For PS/PVME blends, a streak scattering pattern was observed even though the sample became optically clear after shearing. We observed, apparently for the first time, the development of a bright‐streak pattern from a transient dark‐streak pattern for a polymer blend system under shear. Rheo‐microscopy studies revealed an intriguing wave pattern that developed coincident with the observation of a streak pattern by SALS. The relationship between the two phenomena has not yet been established. Copyright © 1995 Society of Plastics Engineers
CHEN ZJ, WU RJ, SHAW MT, et al., 1995, RHEOOPTICAL BEHAVIOR OF BINARY POLYMER BLENDS - THE EFFECT OF SIMPLE SHEAR-FLOW ON PHASE-BEHAVIOR, Polyblends 93 Symposium, Publisher: SOC PLASTICS ENG INC, Pages: 92-99, ISSN: 0032-3888
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- Citations: 25
FERNANDEZ ML, HIGGINS JS, HORST R, et al., 1995, COMPLEX MISCIBILITY BEHAVIOR FOR POLYMER BLENDS IN FLOW, POLYMER, Vol: 36, Pages: 149-154, ISSN: 0032-3861
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- Citations: 51
FERNANDEZ ML, HIGGINS JS, 1995, EFFECT OF FLOW ON POLYMER-POLYMER MISCIBILITY, Symposium on Flow-Induced Structure in Polymers, at the 208th National Meeting of the American-Chemical-Society, Publisher: AMER CHEMICAL SOC, Pages: 106-121, ISSN: 0097-6156
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- Citations: 2
FERNANDEZ ML, HIGGINS JS, 1995, Effect of flow on polymer-polymer miscibility, Symposium on Flow-Induced Structure in Polymers, at the 208th National Meeting of the American-Chemical-Society, Pages: 106-121
The effect of shear now on the miscibility of three model polymer blends has been studied by one-dimensional and two-dimensional light scattering, differential scanning calorimetry and in-situ optical microscopy. Shear was applied between parallel plates and the range of shear rates used was from approximately 0.5 s(-1) to 15 s(-1) Shear was observed to induce both miscibility and phase separation depending on the temperature and shear rate used. Under certain conditions, a large wave-like pattern was observed by in-situ microscopy which gave rise to elongated streaks in the two-dimensional light scattering patterns. These ''waves'' appeared to be independent of phase separation and instead seem to be consistent with the presence of fluid instabilities.
ARRIGHI V, HIGGINS JS, 1994, EFFECT OF BLENDING ON LOCAL MOTION IN POLYMERS STUDIED BY QUASI-ELASTIC NEUTRON-SCATTERING, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 208, Pages: 417-PMSE, ISSN: 0065-7727
FERNANDEZ ML, HIGGINS JS, 1994, FLOW-INDUCED MIXING AND DEMIXING IN POLYMER BLENDS, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol: 208, Pages: 23-PMSE, ISSN: 0065-7727
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