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Polymer Science

Selected Works

1980

Articles 1 - 14 of 14

Full-Text Articles in Engineering

Min Lecturer, Joseph Kennedy Sep 1980

Min Lecturer, Joseph Kennedy

Joseph P. Kennedy

No abstract provided.

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Homogeneous Catalytic Hydrogenation Of Polypentenamer, William Macknight, Walter X. Zukas, Robert W. Lenz Dec 1979

Homogeneous Catalytic Hydrogenation Of Polypentenamer, William Macknight, Walter X. Zukas, Robert W. Lenz

William MacKnight

No abstract provided.

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Small-Angle X-Ray Scattering Study Of Ionomer Deformation, William Macknight, E. J. Roche, R. S. Stein, T. P. Russell Dec 1979

Small-Angle X-Ray Scattering Study Of Ionomer Deformation, William Macknight, E. J. Roche, R. S. Stein, T. P. Russell

William MacKnight

No abstract provided.

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Poly(Alkylene Oxide) Ionomers. Iv. Polyoxymethylene Copolymers With Carboxylate Side Groups: Calorimetric, Dynamic Mechanical And Dielectric Properties, William Macknight, L. Demejo, Otto Vogl Dec 1979

Poly(Alkylene Oxide) Ionomers. Iv. Polyoxymethylene Copolymers With Carboxylate Side Groups: Calorimetric, Dynamic Mechanical And Dielectric Properties, William Macknight, L. Demejo, Otto Vogl

William MacKnight

No abstract provided.

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Fourier Transform Infrared Thermal Analysis Of A Segmented Polyurethane, William Macknight, G. A. Senich Dec 1979

Fourier Transform Infrared Thermal Analysis Of A Segmented Polyurethane, William Macknight, G. A. Senich

William MacKnight

Fourier transform infrared spectroscopy (FTIR) has been used to study the extent of hydrogen bonding and its temperature dependence in a segmented polyurethane elastomer synthesized from 2,6-toluene diisocyanate, 1,4-butanediol, and poly(tetramethylene oxide) of 2060 number average molecular weight. It is found that the ratio of the molar extinction coefficient for the hydrogen bonded to the free amine stretching vibration is 4.6 and that this ratio is 1.05 for the hydrogen bonded to the free carbonyl stretching vibration. The temperature dependence of the concentration of hydrogen bonded groups is without any discontinuity at the hard segment glass transition temperature, and the …

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Thermal, Dynamic Mechanical, And Dielectric Properties Of Hydrogenated, Sulfonated Polypentenamers, William Macknight, D. Rahrig Dec 1979

Thermal, Dynamic Mechanical, And Dielectric Properties Of Hydrogenated, Sulfonated Polypentenamers, William Macknight, D. Rahrig

William MacKnight

No abstract provided.

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Solid State Properties Of Polymer Blends, William Macknight, F. E. Karasz Dec 1979

Solid State Properties Of Polymer Blends, William Macknight, F. E. Karasz

William MacKnight

No abstract provided.

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Small-Angle X-Ray And Neutron Scattering Studies Of The Morphology Of Ionomers.Pdf, William Macknight, E. J. Roche, R. S. Stein Dec 1979

Small-Angle X-Ray And Neutron Scattering Studies Of The Morphology Of Ionomers.Pdf, William Macknight, E. J. Roche, R. S. Stein

William MacKnight

No abstract provided.

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Heats Of Polymer Mixing, William Macknight Dec 1979

Heats Of Polymer Mixing, William Macknight

William MacKnight

Properties of compatible multicomponent polymer systems can be studied quantitatively only if their fundamental thermodynamic parameters can be established. Thus measurements of mixing enthalpies in such polymer-polymer pairs is of interest 
in arriving at criteria for compatibility. Direct determinations are awkward, but the required parameters can be obtained from differential heat of solution measure­
ments. The metastability of polyrrer blends in phase separated regions below their glass transition temperatures provides additional insight when calorimetric measures 
are performed below Tg. These factors are illustrated with examples of compatible, near-compatible and incompatible binary mixtures containing poly(2,6-dimeth phenylene oxide) and polystyrene or halogenated …

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Dielectric Study Of Polymer Compatibility: Blends Of Polystyrene/Poly-2-Chlorostyrene, William Macknight, P. Alexandrovich, F. E. Karasz Dec 1979

Dielectric Study Of Polymer Compatibility: Blends Of Polystyrene/Poly-2-Chlorostyrene, William Macknight, P. Alexandrovich, F. E. Karasz

William MacKnight

The dielectric constant and loss have been monitored iso­thermally in the frequency plane in the a relaxation region for a series of amorphous compatible and phase separating polymer blends comprising one polar and one relatively non­polar component. Differential scanning calorimetry has 
been employed for preliminary assessment of the miscibility of a given pair. The system polystyrene/poly-2-chloro­styrene (PS/PoCS) has been found to exhibit miscibility highly dependent on molecular weight and temperature. High molecular weight blends display wide loss spectra; phase separation above a lower critical solution temperature (LCST) results in the narrowing of the loss curves. Low molecular weight polystyrene yields …

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Dielectric Relaxation Of Poly(Chlorostyrenes) And Their Copolymers In The Primary Transition Region, William Macknight, P. Alexandrovich, F. E. Karasz Dec 1979

Dielectric Relaxation Of Poly(Chlorostyrenes) And Their Copolymers In The Primary Transition Region, William Macknight, P. Alexandrovich, F. E. Karasz

William MacKnight

No abstract provided.

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Infrared Studies Of Hydrogen Bonding In Ethylene-Methacrylic Acid Copolymers And Ionomers, William Macknight, T. R. Earnest Jr. Dec 1979

Infrared Studies Of Hydrogen Bonding In Ethylene-Methacrylic Acid Copolymers And Ionomers, William Macknight, T. R. Earnest Jr.

William MacKnight

No abstract provided.

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Thermal Degradation Of Glumate Polymers, William Macknight, C. Peter Lillya, Richard M. Newman, Wei-Fang A. Su, Peter C. Uden Dec 1979

Thermal Degradation Of Glumate Polymers, William Macknight, C. Peter Lillya, Richard M. Newman, Wei-Fang A. Su, Peter C. Uden

William MacKnight

No abstract provided.

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Thermal And Dynamic Mechanical Properties Of Sulfonated Polypentenamers, William Macknight, D. Rahrig Dec 1979

Thermal And Dynamic Mechanical Properties Of Sulfonated Polypentenamers, William Macknight, D. Rahrig

William MacKnight

No abstract provided.

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