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  • 1
    Electronic Resource
    Electronic Resource
    EFFECT OF PROCESSING CONDITIONS ON THE VISCOELASTIC BEHAVIOR OF NU-TRIMX: AN OAT-BASED β-GLUCAN-RICH HYDROCOLLOIDAL EXTRACTIVE (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of texture studies 31 (2000), S. 0 
    Details
    ISSN: 1745-4603
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: This paper examines the effects of processing conditions and starting materials on the viscoelastic behavior of Nu-TrimX (a new β-glucan-rich hydrocolloid product) suspensions (5% by weight in deionized water). In general, Nu-TrimX suspensions exhibit clockwise thixotropic loops with shear-thinning behavior over the experimental shear rate range (0–250 s−1) at 25C. The rheological responses of the various Nu-TrimX suspensions were modeled using a power law constitutive equation. The suspensions behave as pseudoplastic materials with power law exponents ranging from 0.42 to 0.71.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4603.2000.tb01412.x
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  • 2
    Electronic Resource
    Electronic Resource
    Molecular Weight Dependence of Polystyrene/Poly(methyl methacrylate) Interfacial Tension Probed by Imbedded-Fiber Retraction (1994)
    s.l. : American Chemical Society
    Macromolecules 27 (1994), S. 1643-1647 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00084a055
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  • 3
    Electronic Resource
    Electronic Resource
    Use of a β-glucan hydrocolloidal suspension in the manufacture of low-fat Cheddar cheese: manufacture, composition, yield and microstructure (2004)
    Oxford, UK : Blackwell Science Ltd
    International journal of food science & technology 39 (2004), S. 0 
    Details
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Low-fat Cheddar cheese was manufactured using a β-glucan, hydrocolloidal fat replacer denoted as Nutrim. The composition, production efficiency, microstructure, and utility of replacing fat with Nutrim were examined. Cheese samples (designated as Nutrim-I, and Nutrim-II) containing Nutrim were produced with mean fat levels of 6.84 and 3.47%, respectively. A low-fat cheese was also produced as a control with a mean fat level of 11.2%. Nutrim-II cheese had significantly higher moisture, salt, and ash contents as compared with the low-fat control cheese. The low-fat control cheese had a higher yield normalized for 54% moisture and 1.5% salt content as compared with the Nutrim-II cheese. Scanning electron microscopy revealed smaller and more uniform fat droplet voids in the Nutrim cheese than the low-fat control, and a more dense, noncontinuous background protein matrix with globular clusters suggesting a physical buffering afforded by the presence of the β-glucan hydrocolloid or its associated water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.0950-5423.2003.00750.x
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  • 4
    Electronic Resource
    Electronic Resource
    Analysis of a retraction mechanism for imbedded polymeric fibers (1989)
    Springer
    Rheologica acta 28 (1989), S. 223-232 
    Details
    ISSN: 1435-1528
    Keywords: Retraction ; interfacial tension ; imbeddedfibers ; micromechanics ; polymerblend
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract The mechanics of retraction of polymeric fibers imbedded in a polymeric matrix was analyzed. The shape evolution was described using a one-dimensional equation of equilibrium representing a balance between interfacial tension and viscous resistance. Microscopic tracking of polystyrene fibers in poly(methyl methacrylate) matrix was performed and compared with the data for the reverse material combination. The analysis of hydrodynamic and viscous factors was conducted using experimental results. It was found that the model provides an adequate description for the micromechanics of imbedded fibers. A characteristic time scale for the retraction was obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01332854
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  • 5
    Electronic Resource
    Electronic Resource
    Analysis of a retraction mechanism for imbedded polymeric fibers (1989)
    Springer
    Rheologica acta 28 (1989), S. 435-435 
    Details
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01336811
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  • 6
    Electronic Resource
    Electronic Resource
    Compatibility of high polymers probed by interfacial tension (1992)
    Springer
    Rheologica acta 31 (1992), S. 554-564 
    Details
    ISSN: 1435-1528
    Keywords: Compatibility ; interfacial tension ; imbedded fiber retraction ; polymer blend
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract Imbedded-fiber retraction (IFR) has been applied to study the compatibility of high polymers. IFR measures the interfacial tension between two immiscible high-viscosity thermoplastic resins in their molten states. Ten nonreactive blend pairs were studied. One blend component was a poly(styrene-co-acrylonitrile-co-fumaronitrile) terpolymer resin (S/AN/FN). The other component was one of a set of ten S/AN resins with an AN level between 0 and 51%. These high-molecular-weight resins were particularly challenging for IFR since they were nearly isorefractive, had high melt viscosities (103–105 Pa s), and could chemically age when molten. Interfacial tensions γ12 ranged from 0.00 to 5.5 dyn/cm at 200 °C. Miscible bends had γ12 = 0 and a single T g .Immiscible blends had γ12 〉 0 and two T gs. Compatibility was quantitatively assessed from the monotonic rise in γ12 as compatibility decreases. The results demonstrate that IFR can rank the compatibility of high polymers. It is expected that IFR can also rank the compatibility of polymers with similar T g s,and rank the ability of additives to enhance blend compatibility.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00367010
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  • 7
    Electronic Resource
    Electronic Resource
    Multilayer rheology: A comparison of experimental data with modeling of multilayer shear flow (1995)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 35 (1995), S. 1979-1984 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The rheological behavior of multilayer polyjeric structures has been investigated Measurements of the bulk viscoelastic properties via small-amplitude oscilatory rheometry indicated that the shear viscosity is independent of both the numbe of layers (83 vs. 165) and the composition (30/70, 50/50, and 70/30 PC/PMMA by weight) within the limits of the data obtained. It is also apparent tha tthe shear viscosity is influenced strongly by the skin layer material. In additon, a model has been developed tha tcan be used to proedict the shear viscosity and shear stress ofa multilayer structure experiencing shear flow. The model predicts tha thte shear viscosity of a multilayer structure should be independent of the number of layers and strongly dependent on the material in the skin layer. These predictions are in agreement with experimental data.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760352410
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  • 8
    Electronic Resource
    Electronic Resource
    Network development during shear-thickening in semidilute solutions of gently solubilized starches (1998)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 36 (1998), S. 2085-2093 
    Details
    ISSN: 0887-6266
    Keywords: starch ; shear-thickening ; semidilute solution ; viscoelastic properties ; oscillatory shear flow ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The shear-thickening behavior of semidilute waxy maize (WM) starch solutions (90/10 DMSO/water) exhibit much of the behavior of classical nonlinear viscoelasticity. Small-amplitude oscillatory shear experiments were used to investigate the network structure formed during the shear-thickening regime. The solution viscoelastic properties of WM starch prior to the shear-thickening region could be described by the GLV model. The macromolecules behave as random coils with a longest relaxation time of 0.58 ± 0.03 s. For WM starch the observed shear-thickening region creates a stable, highly entangled network which resembles the behavior found in solutions in the concentrated regime. The longest relaxation time for the entangled solution is estimated to be 1.4 s. Semidilute solutions of normal maize (NM) starch in 90/10 DMSO/water do not exhibit a shear-thickening regime. The oscillatory shear data obtained before and after a thixotropic loop experiment were identical. The semidilute solution conformational dynamics of NM starch indicate some degree of rigidity in one of the components that constitute NM starch which might be associated with the helical structure obtained by amylose in DMSO. © 1998 John Wiley & Sons, Inc. This article is a US Government work, and, as such, is in the public domain in the United States of America. J Polym Sci B: Polym Phys 36: 2085-2093, 1998
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    The effect of processing conditions on the fracture behavior of syndiotactic polystyrene films (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 62 (1996), S. 1483-1490 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A fracture behavior map for syndiotactic polystyrene (sPS) film as a function of annealing temperature and the extension ratio has been developed. The fracture initiation and propagation processes of the film were characterized by a specialized video-based real-time thin-film fracture technique. An unusual layered complex deformation mechanism has been observed for the films fabricated at high extension ratios. This mechanism enhances the resistance to crack growth in sPS films. © 1996 John Wiley & Sons, Inc.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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