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Chemical Engineering

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Selected Works

Selected Works

1993

Articles 1 - 9 of 9

Full-Text Articles in Entire DC Network

Intramolecular Interactions In Poly(Styrene-Co-Acrylonitrile)/Poly(Epsilon-Caprolactone) Blends.Pdf, William Macknight, V. Janarthanan, J. Kressler, F. E. Karasz Dec 1992

Intramolecular Interactions In Poly(Styrene-Co-Acrylonitrile)/Poly(Epsilon-Caprolactone) Blends.Pdf, William Macknight, V. Janarthanan, J. Kressler, F. E. Karasz

William MacKnight

No abstract provided.

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Amorphous-Crystalline Block Copolymer And Amorphous Homopolymer Blends. 1. A Preliminary Report, William Macknight, Kazuo Sakurai, David J. Lohse, Donald N. Schulz, J.A. Sissano Dec 1992

Amorphous-Crystalline Block Copolymer And Amorphous Homopolymer Blends. 1. A Preliminary Report, William Macknight, Kazuo Sakurai, David J. Lohse, Donald N. Schulz, J.A. Sissano

William MacKnight

No abstract provided.

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Dynamics Of The Junction Point In Model Network Polymers By (31)P Nuclear Magnetic Relaxation, William Macknight, Jie-Feng Shi, L. Charles Dickinson, James C. W. Chien Dec 1992

Dynamics Of The Junction Point In Model Network Polymers By (31)P Nuclear Magnetic Relaxation, William Macknight, Jie-Feng Shi, L. Charles Dickinson, James C. W. Chien

William MacKnight

Solid-state 3lP NMR spin-lattice relaxation times (2'1~) have been measured over a wide range
of temperatures for a series of network polymers with molecular weights between cross-links (M,r)an ging
from 250 to 2900. The networks were formed from poly(tetrahydr0furan) and tris(4-isocyanatophenyl)
thiophosphate. The chain length dependence of the glass transition temperature obeys the Fox-Loshaek
relation. The dominant mechanism for 3lP spin-lattice relaxation was found to be chemical shift anisotropy.
The data fitted equally well to the ColeCole or the Williams-Watts relaxation functions. The apparent and
microscopic activation energies for the motion of junction points are 44-73 and 23-30 kJjmo1, respectively, …

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Thermodynamic Aging Of Immiscible Polymer Blends, William Macknight, Ronald Koningsveld, Karel Sole Dec 1992

Thermodynamic Aging Of Immiscible Polymer Blends, William Macknight, Ronald Koningsveld, Karel Sole

William MacKnight

No abstract provided.

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Structure In Mesogenic Diol-Containing Polyesters, William Macknight, Hartmut Fischer, F. E. Karasz Dec 1992

Structure In Mesogenic Diol-Containing Polyesters, William Macknight, Hartmut Fischer, F. E. Karasz

William MacKnight

No abstract provided.

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Small-Angle X-Ray Scattering (Saxs) Studies Of Sulfonated Polystyrene Ionomers. 1. Anomalous Saxs, William Macknight, Benjamin Chu, Dan Q. Wu, Robert D. Lundberg Dec 1992

Small-Angle X-Ray Scattering (Saxs) Studies Of Sulfonated Polystyrene Ionomers. 1. Anomalous Saxs, William Macknight, Benjamin Chu, Dan Q. Wu, Robert D. Lundberg

William MacKnight

Morphological studies of sulfonated polystyrenes by using small-angle X-ray scattering (SAXS)
and anomalous SAXS (ASAXS) are presented. ASAXS was used to study a model ionomer system: zinc
salts of sulfonated polystyrene (SPS). The results showed the presence of local clustering, as well as longrange
inhomogeneities of ions. The observed morphology could be attributed only to themetal ionicstructures,
as can be proven by means of ASAXS. However, with the SAXS patterns by SPS being much stronger than
those of polystyrene or SPS in acid form, the excess SAXS patterns of the metal ions can be measured with
greater precision by SAXS …

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Innovative Site Remediation Technology: Thermal Desorption, Joann Lighty, Martha Choroszy-Marshall, Michael Cosmos, Vic Cundy, Paul De Percin Dec 1992

Innovative Site Remediation Technology: Thermal Desorption, Joann Lighty, Martha Choroszy-Marshall, Michael Cosmos, Vic Cundy, Paul De Percin

JoAnn S. Lighty

This monograph on thermal desorption is one of a series of eight on innovative site and waste remediation technologies that are the culmination of a multiorganization effort involving more than 100 experts over a two-year period. It provides the experienced, practicing professional guidance on the application of innovative processes considered ready for full-scale application. Other monographs in this series address bioremediation, chemical treatment, soil washing/soil flushing, solvent/chemical extraction, stabilization/solidification, thermal destruction, and vapor extraction.

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Dynamic Modelling Of Industrial So2 Oxidation Reactors Part Ii. Model Of A Reverse-Flow Reactor, Krzysztof J. Gosiewski Dec 1992

Dynamic Modelling Of Industrial So2 Oxidation Reactors Part Ii. Model Of A Reverse-Flow Reactor, Krzysztof J. Gosiewski

Krzysztof Gosiewski

The results are presented of a computer simulation of a reverse-flow reactor. The results are compared with experimental data quoted by other workers. The necessity to take into account gas-to-catalyst heat transfer is stressed, so that quantitatively correct predictions may be obtained using the model. A brief description is given of the way flow reversal has been incorporated in the model, and the possibility of the accumulation of errors occurring during the calculations is mentioned. It is shown that the one-dimensional heterogeneous model of the bed makes it possible to analyze the process with an accuracy sufficient for the preliminary …

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Thermal Analysis Of Heat Storage Materials, Yasar Demirel, H.O. Paksoy Dec 1992

Thermal Analysis Of Heat Storage Materials, Yasar Demirel, H.O. Paksoy

YASAR DEMIREL

An improved method for testing the thermal performance of encapsulated heat storage materials in large nonstirred samples is presented.

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