Anomalous solvent transport in macromolecular coal networks. Final technical report, September 1, 1983-August 31, 1986. [n-propylamine, n-butylamine, diethylamine, dipropylamine]

Technical Report · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5400799

Peppas, N A; Barr-Howell, B; Howell, J M; Riger, P L

The purpose of this research was to use the dynamic swelling (transport) technique as a probe of the macromolecular structure of the organic phase of coals. Specifically, we were interested in comparing the transport mechanisms of penetrants into coal with those of penetrants into highly crosslinked synthetic macromolecular structures which allegedly simulate the coal network structure. The main goals of this work were: (1) to investigate the dynamic swelling behavior of pyridine extracted and unextracted coal particles in pyridine vapor; (2) to investigate the dynamic swelling behavior of unextracted coal particles in analogous aliphatic amines; (3) to investigate the penetrant transport into crosslinked polystyrene using methyl ethyl ketone; (4) to investigate the dynamic swelling behavior of recently proposed, crosslinked, structures based on naphthalene which allegedly simulate the coal structure; (5) to determine, for each macromolecular network with appropriate swelling agents, the molecular weight between crosslinks using equilibrium swelling experiments; (6) to analyze dynamic swelling studies with three different physical models; and (7) to compare the relaxation and diffusional parameters of coal obtained from the previous analyses, to those of the highly crosslinked polymers and to present these correlations between the transport phenomena and the crosslinked structure in general. During the course of this work we also investigated: (1) the effect of functionality of the crosslink on the calculated value of the molecular weight between crosslinks using our non-Gaussian equation; (2) the thermoplastic and viscoelastic behavior of coal network structures using thermal analysis; (3) the velocity of the penetrant as a function of time and crosslinking ratio (for poly(2-hydroxyethyl methacrylate) only); and (4) porosimetry measurements on the coal particles. 152 refs., 131 figs., 58 tabs.

• Research Organization: Purdue Univ., Lafayette, IN (USA). School of Chemical Engineering
• DOE Contract Number: FG22-83PC60792
• OSTI ID: 5400799
• Report Number(s): DOE/PC/60792-T3; ON: DE86015634
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AMINES
AROMATICS
AZINES
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL FINES
CONDENSED AROMATICS
CORRELATIONS
CROSS-LINKING
DATA
DIFFUSION
DIMENSIONS
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROCARBONS
INFORMATION
KETONES
MATERIALS
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
MOLECULAR WEIGHT
NAPHTHALENE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PARTICLE SIZE
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERIZATION
POLYMERS
POLYOLEFINS
POLYSTYRENE
POLYVINYLS
POROSITY
PYRIDINE
PYRIDINES
RESEARCH PROGRAMS
SEPARATION PROCESSES
SIZE
SOLVENT EXTRACTION
SORPTION
STRUCTURAL CHEMICAL ANALYSIS
SWELLING
SYNTHETIC MATERIALS
TEMPERATURE EFFECTS
THICKNESS
TIME DEPENDENCE