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  • 1
    Electronic Resource
    Electronic Resource
    Biology and Management of Early Dying of Potatoes (1993)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 31 (1993), S. 111-126 
    Details
    ISSN: 0066-4286
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.py.31.090193.000551
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  • 2
    Electronic Resource
    Electronic Resource
    The influence of lateral stresses on brittle–ductile transitions in the die-compaction of sodium chloride (1997)
    Springer
    Journal of materials science 32 (1997), S. 4183-4187 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A model has been developed that accounts for the effect of lateral stresses on the deformation of particles occurring during die compaction. This has been examined using the model material sodium chloride. The lateral stresses were found to inhibit cracking of the particles during compaction. Agreement between the theory and experimental results was obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018678629902
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  • 3
    Electronic Resource
    Electronic Resource
    Interactions and partitioning of diluents/plasticizers in hydroxypropyl methylcellulose and polyvinyl alcohol homopolymers and blends. Part I: Diethylene glycol (1993)
    Springer
    Colloid & polymer science 271 (1993), S. 1083-1090 
    Details
    ISSN: 1435-1536
    Keywords: Aqueous solutions ; polyvinyl alcohol ; hydroxypropyl methylcellulose ; interactions ; plasticizer ; partitioning ; solubility ; diethylene glycol
    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 The interactions and partitioning of diethylene glycol (DEG) in polyvinyl alcohol (PVA), hydroxypropyl methylcellulose (HPMC) and their blends has been studied. DEG acted as efficient plasticizer for both homopolymers, lowering theirT g and relative rigidity. Kelly-Bueche-type equations were fitted successfully to the experimental data and yielded an interaction parameter,K Φ, between DEG and each polymer. Incorporation of DEG into two-phase blends of PVA and HPMC with 40, 50 and 60% PVA did not change the significant incompatibility of the two components and plasticized both phases. Composition calculations based on Kelley-Bueche-type expressions fitted to the experimental data afforded determination of the partition coefficients of DEG into the two phases of the blends. In the case of the 50∶50 weight% system, it partitioned almost equally into both phases. The results are discussed in terms of the DEG affinity to interact with the two polymers by means of the dispersive, polar and hydrogen-bonding contribution to the solubility parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00659298
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  • 4
    Electronic Resource
    Electronic Resource
    Interactions and partitioning of diluents/plasticizers in hydroxypropyl methylcellulose and polyvinyl alcohol homopolymers and blends. Part II: Glycerol (1994)
    Springer
    Colloid & polymer science 272 (1994), S. 48-56 
    Details
    ISSN: 1435-1536
    Keywords: Aqueous ; polyvinyl alcohol ; hydroxypropyl methylcellulose ; interactions ; plasticizer ; partitioning ; solubility ; glycerol
    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 The interactions and partitioning of glycerol in polyvinyl alcohol (PVA), hydroxypropyl methylcellulose (HPMC) and their blends has been studied by means of torsional braid analysis (TBA). Glycerol was shown to be a more efficient plasticizer for PVA than HPMC in agreement with solubility parameter prediction. Kelley-Bueche-type equations were fitted to the experimentalTg data and initial slopes yielded an interaction parameter,Kø, between glycerol and the two polymers. Incorporation of glycerol in PVA/HPMC blends did not alter the incompatibility of the two polymers and plasticized both phases. The compositions of the two plasticized phases were calculated from Kelley-Bueche expressions fitted to the experimental data, enabling determination of the glycerol partition coefficients into the two phases. In blends with 20–60% PVA, glycerol partitioned selectively into the PVA-rich phase whereas in the system with 80% PVA, glycerol partitioned selectively into the HPMC-rich inclusions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653309
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  • 5
    Electronic Resource
    Electronic Resource
    Interactions and partitioning of diluents/plasticizers in hydroxypropyl methylcellulose and polyvinyl alcohol homopolymers and blends. Part III: Polyethylene glycol 400 (1994)
    Springer
    Colloid & polymer science 272 (1994), S. 220-227 
    Details
    ISSN: 1435-1536
    Keywords: Aqueous ; polyvinyl alcohol ; hydroxypropyl methylcellulose ; interactions ; plasticizer ; partitioning ; solubility ; polyethylene glycol
    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 The interactions and partitioning of polyethylene glycol 400 (PEG400) in hydroxypropyl methylcellulose (HPMC), polyvinyl alcohol (PVA) and their blends have been investigated by means of torsional braid analysis (TBA). PEG400 was shown to be a better plasticizer for HPMC than PVA, in agreement with solubility parameter predictions. Incorporation of PEG400 in blends of PVA and HPMC did not alter the incompatibility between the two homopolymers and plasticized both phases. The PEG400 content in the two phases was calculated by fitting Kelley-Bueche and quadratic expressions to the experimental data, enabling determination of the PEG400 partition coefficient. The data showed a selective partitioning of PEG400 in the HPMC phase for plasticizer contents less than 20% w/w. At higher concentrations, PEG400 continued to partition selectively into the HPMC phase for blends with 60 and 80% PVA but started partitioning in the PVA phase for blends with 20 and 40% PVA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00658851
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  • 6
    Electronic Resource
    Electronic Resource
    Crack propagation in both porous compacts and pigmented films prepared from cellulose derivatives — a comparison of computer simulation with experimental observation (1996)
    Springer
    Cellulose 3 (1996), S. 11-20 
    Details
    ISSN: 1572-882X
    Keywords: crack propagation ; simulation ; films ; compacts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A model originally developed to simulate crack propagation in viscoplastic materials, where the micromechanism consists of void growth, has been evaluated for both pigmented films and porous compacts of cellulose derivatives. The program allows both visualization of crack growth and the calculation of crack velocity. The program is easy to use, enabling many simulations to be performed with minimum effort. The agreement with experimental observation both qualitatively and quantitatively is very good.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02228788
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  • 7
    Electronic Resource
    Electronic Resource
    Simulation of crack propagation in porous compacted specimens of aspirin (1993)
    Springer
    Journal of materials science 28 (1993), S. 3385-3390 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A model originally developed to simulate crack propagation in structural steel has been evaluated for porous compacted specimens of aspirin. The fracture mechanism is assumed to consist of hole growth and coalescence. The program allows both visualization of crack growth and the calculation of crack velocity. Simulations to investigate the effect of stress intensity factor indicate that the critical stress intensity factor for sustained growth for aspirin is of the order of 0.15 MPa m1/2 consistent with experimental findings. The program is easy to use enabling many simulations to be performed with minimum effort.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00354262
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  • 8
    Electronic Resource
    Electronic Resource
    The relationship between indentation hardness of organic solids and their molecular structure (1994)
    Springer
    Journal of materials science 29 (1994), S. 2289-2296 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A model has been developed relating the indentation hardness of organic molecular solids to their cohesive energy density, the length of the Burgers vector, the weakest plane from the crystal structure and crystal structural parameters. Whilst the described model is pragmatic, calculated indentation values for a variety of materials based on the weakest plane using specific Burgers vectors agree well with those from literature data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00363416
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  • 9
    Electronic Resource
    Electronic Resource
    An assessment of substrate-binder interactions in model granule systems (1993)
    Springer
    Journal of materials science 28 (1993), S. 6729-6736 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Linear elastic fracture mechanics was used to investigate the mechanical properties of four model dry granule systems with porosities of between 35% and 55%. The deformation and fracture behaviour of the agglomerates varied according to their porosity, the identity and quantity of the binder component, and the nature of any substrate-binder interfacial interactions. All the agglomerates deformed elastically but failed by plastic deformation of the binder component, in agreement with previously reported theoretical predictions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00356423
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  • 10
    Electronic Resource
    Electronic Resource
    Interrelationships between the yield stress, tensile fracture strength and Young's modulus of elasticity of films prepared from cellulose ethers and esters (1995)
    Springer
    Journal of materials science 14 (1995), S. 420-421 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00274559
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