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  • 1
    Electronic Resource
    Electronic Resource
    Mechanical studies of high-strength, high-modulus poly(p-phenylenebenzobisthiazole) fibers (1981)
    s.l. : American Chemical Society
    Macromolecules 14 (1981), S. 1135-1138 
    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/ma50005a050
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  • 2
    Electronic Resource
    Electronic Resource
    APPLICATION OF RESPONSE SURFACE ANALYSIS IN THE FORMULATION OF WHIPPED TOPPING (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 45 (1980), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Computer analysis of a response surface experimental design was used to study the effect of three variables: fat (15, 18, and 21%), stabilizer (0.3, 0.5, and 0.7%), and corn syrup solids (7, 10, and 13%) on the overrun and firmness of whipped topping. Response surface plots were generated by the computer for overrun and firmness of the whipped topping as a function of fat versus stabilizer at selected contents of corn syrup solids. The response models for overrun and firmness acounted for about 62% and 82% of the variation in the observed overrun and firmness values, respectively. The models also indicate that each ingredient mainly reacted independently in contributing to overrun and firmness of the topping. Response surface plots show that there were many combinations of fat, stabilizer and corn syrup solids that would produce a similar response of overrun and firmness of the whipped topping. A combination of variables can be selected by this procedure to produce an optimum whipped topping mixture on the basis of cost, availability, and convenience.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1980.tb02611.x
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  • 3
    Electronic Resource
    Electronic Resource
    Solid state extrusion of thermoplastic elastomers 4 (1984)
    Springer
    Colloid & polymer science 262 (1984), S. 538-550 
    Details
    ISSN: 1435-1536
    Keywords: solid state extrusion ; block copoly(ether ester) ; structure ; small angle X-ray scattering ; mechanical properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A solid state extrusion technique is applied as to produce oriented block copoly(ether ester) under various physical conditions. The morphology of the extruded samples is characterized in relation to the extrusion parameters and hard segment compositions of the polymer, using thermal analysis and X-ray methods. The lateral dimensions of the crystalline domains are found to be approximately 150 Å depending on the extrusion conditions. The statistics of the long range periodicity of the structure along the extrusion direction is in agreement with a one-dimensional two phase model, the crystalline portion of which does not vary much in thickness (35 – 45 Å). The unexpected increase in the long period and the thermal shrinkage suggest the existence of strained interlamellar amorphous chains (tie molecules). The observed variations in tensile properties are interpreted under the assumption that both the number of such tie molecules and their fully extended lengths are determined by the hard segment composition and the extrusion conditions. It is also argued that the increase in the glass transition temperature is not only a function of the composition of hard segments in the amorphous phase but also of the number of strained tie molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01451517
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  • 4
    Electronic Resource
    Electronic Resource
    Macrostructure and mechanical behavior of fibers of poly-p-phenylene benzobisthiazole (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 26 (1981), S. 291-301 
    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: Morphology and tensile behavior of wet-spun fibers of poly-p-phenylene benzobisthiazole have been investigated. The as-spun fibers contain a large number of voids, which result in void-localized tensile failure. The stress-strain behavior is elastic-plastic with strain hardening. This behavior is shown to be the result of residual stresses which arise during the wet-spinning process.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1981.070260127
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  • 5
    Electronic Resource
    Electronic Resource
    Morphology of CaCO3-filled polyethylenes (1982)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 20 (1982), S. 2177-2195 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The morphology of one novel “homogeneous composite” and some conventional CaCO3-particulate-filled polyethylenes (PEs) has been investigated by transmission and scanning electron microscopy. It is found that for three different linear polyethylenes (Mw = 37,000, 200,000, and 1.5 × 106) studied, ordering on the scale of spherulites was absent in the CaCO3-filled polymer. However, PE lamallae were observed growing normal to the filler interface. Changes in molecular weight of the polyethylene result in easily observed differences in morphology, while DSC studies indicate that crystallinity decreases in the presence of filler for the two lower-molecular-weight polyethylenes.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1982.180201202
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  • 6
    Electronic Resource
    Electronic Resource
    Electron microscopy study of the structure of normal and abnormal poly(butylene terephthalate) spherulitesSupported in part by grants from the National Science Foundation, the Army Research Office (Durham), and the Materials Research Laboratory of the University of Massachusetts. (1980)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 18 (1980), S. 1145-1158 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Normal and abnormal spherulites of polybutylene terephthalate cast from solution in HFIP were investigated by electron microscopy (CTEM and STEM). Both spherulite types crystallize in the α form. The crystallite is biaxial with its greatest polarizability directions Z and Y oriented along the molecular chain and perpendicular to it in the plane of the terephthalate residue. In the normal spherulites, the [210]* direction is parallel to the radius direction, so that both Z and Y directions are oriented tangentially (negative spherulites). In the abnormal spherulites, the [111]* direction is parallel to the radius, and this explains the observed abnormal light scattering pattern.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1980.180180518
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