Macromolecular coal structure as revealed by novel diffusion tests

Technical Report · Fri Feb 16 04:00:00 EST 1990

DOI:https://doi.org/10.2172/5002882· OSTI ID:5002882

Peppas, N. A.; Olivares, J.

Analysis of dynamic swelling results from macromolecular networks swollen by thermodynamically good solvents yields information about the structure of the network and its solvent-network interactions. Diffusion studies can be used to identify the thermodynamic state of the network, i.e., whether the network exists in the glassy or rubbery state. For a macromolecular network, it is possible to determine whether sorption is due to Fickian diffusion, macromolecular chain relaxations, or due to a coupling of the two phenomena. In order to understand the mechanisms that govern the sorption of penetrants into the coal network, it is necessary to study and understand the concentration, temperature, and penetrant activity effects on diffusion, as well as particle geometry, network crosslinking density, network, and penetrant-network compatibility. 27 refs., 23 figs., 3 tabs.

• Research Organization: Purdue Univ., Lafayette, IN (USA). School of Chemical Engineering
• Sponsoring Organization: DOE/FE
• DOE Contract Number: FG22-87PC79914
• OSTI ID: 5002882
• Report Number(s): DOE/PC/79914-T10; ON: DE90006790
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AZINES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
COAL
CROSS-LINKING
DIFFUSION
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
FURANS
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
MATERIALS
MATHEMATICAL MODELS
MOLECULAR STRUCTURE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
POLYMERIZATION
PROGRESS REPORT
PYRIDINE
PYRIDINES
SWELLING
TETRAHYDROFURAN
TRANSPORT