Synthesis and characterization of novel polymers from non-petroleum sources for use in enhanced oil recovery. Final report, July 1, 1983-June 30, 1984
Accomplishments for the past year are discussed for grafting of acrylamide to: (1) starch and related polysaccharides; and (2) cellulose solutions. In grafting acrylamide to various polysaccharide substrates such as okra polysaccharide, yellow dextrin, waxy corn starch, potato amylose, gum arabic, the efficiency of Ce/sup 4 +/ as initiator was found to vary from 0.02 to 0.89, depending on reaction conditions. Okra polysaccharide was isolated, characterized, and evaluated for use in enhanced oil recovery. A series of experiments designed to increase the viscosifying power of certain polymers by chain extension techniques has also been conducted. Characterization of the polymers by ultracentrifugation, size exclusion chromatography, membrane filtration, multi-cell equilibrium dialysis, and rheological studies has also been done. In grafting of acrylamide to cellulose solutions the following two courses were taken: (1) dissolution of cellulose in 70% aqueous zinc chloride, followed by Ce/sup 4 +/ initiated grafting of acrylamide, and (2) introduction of a 1,2-diol substituent onto the anhydroglucose units of the cellulose chain via dissolution of cellulose in concentrated aqueous NaOH, followed by treatment with glyceryl chlorohydrin. Considerable progress has been made via both approaches. 11 refs., 1 fig., 1 tab.
- Research Organization:
- Florida Univ., Gainesville (USA)
- DOE Contract Number:
- AS05-83ER45031
- OSTI ID:
- 5867013
- Report Number(s):
- DOE/ER/45031-1; ON: DE85010922
- Country of Publication:
- United States
- Language:
- English
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ACRYLAMIDE
AMIDES
CARBOHYDRATES
CATIONS
CELLULOSE
CENTRIFUGATION
CERIUM COMPOUNDS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHROMATOGRAPHY
COPOLYMERS
DIALYSIS
FILTRATION
GRAFT POLYMERS
IONS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERIZATION
POLYMERS
POLYSACCHARIDES
RARE EARTH COMPOUNDS
REAGENTS
RESEARCH PROGRAMS
RHEOLOGY
SACCHARIDES
SEPARATION PROCESSES
STARCH
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
ULTRACENTRIFUGATION
VISCOSITY