Index Catalog // ScholarsArchive@OSU

Investigation of a new resin as an exterior adhesive to bond high moisture content veneers

Creator:: Clark, Randy Jon
Abstract:: A new carbohydrate-phenol based resorcinol resin (CPR resin) was synthesized by end capping a known carbohydrate-phenol based resole with resorcinol under basic reaction conditions. Synthetic parameters, such as duration of cook, pH, and the amount of resorcinol and formaldehyde were varied to produce resins with molecular weights (Mw) ranging from...
Resource Type:: Masters Thesis

Douglas-fir inner bark procyanidins : sulfonation, isolation and characterization

Creator:: Bae, Youngsoo
Abstract:: See pdf
Resource Type:: Dissertation

The reaction of (+)-catechin with N-Hydroxymethylacetamide : a model for cross-linking PVA resins with tannins

Creator:: Wallace, Kathryn Anne
Abstract:: Equal molar amounts of (+)-catechin and N-Hydroxymethylacetamide were reacted under acidic conditions. Thin-layer chromatography (TLC) was used to monitor the reaction. The reaction products were isolated by column chromatography using Sephadex LH-20 and elution with 95 percent ethanol. Three reaction products isolated included one disubstituted and two monosubstituted compounds. The...
Resource Type:: Masters Thesis

Low molecular weight polyphenols in Douglas-fir outer bark : extraction, isolation and structure determination

Creator:: Chen, Jie
Resource Type:: Masters Thesis
Full Text:: express special appreciation to my major professor, Joseph J. Karchesy, for his many helpful suggestions

Structural determination of a new carbohydrate-phenolic based resin coupled with urea

Creator:: Ghodoussi, Vahid
Abstract:: A resin was synthesized by reacting glucose with urea and phenol under acidic conditions. To better understand the structure of this polymer and the mechanism of its formation, this study was undertaken. It was observed that although the polymer backbone is comprised of a carbohydrate, glucose is not incorporated in...
Resource Type:: Dissertation

Polyphenols from the bark of Douglas-fir and red alder

Creator:: Gonzalez-Laredo, Ruben Francisco
Abstract:: The objectives of this research were to isolate and determine the molecular structures of certain polyphenols in Douglas-fir and red alder barks. The compounds of interest in Douglas-fir were the lignans which are eventually incorporated into the outer bark phlobaphenes. Phlobaphenes are the red colored, alcohol soluble, water insoluble phenolic...
Resource Type:: Dissertation

Viscosity and bond quality of urea formaldehyde adhesive extended with acid modified and phosphorylated sago (Metroxylon sp)

Creator:: Sumadiwangsa, Suwardi
Abstract:: It was the goal of this research to determine if sago starch could be used to replace wheat flour as an adhesive extender of Urea-formaldehyde plywood adhesives through either chemical modification of the starch or modification of the adhesive formulation strategy. Guiding principles of the research would be that a...
Resource Type:: Dissertation

Diarylheptanoid glycosides from red alder bark

Creator:: Chen, Jie, 1957-
Resource Type:: Dissertation
Full Text:: Joseph J. Karchesy, my major professor, for providing guidance, suggestions and facilities during my

Origin and age of Fe-Mn-P concretions and nodules in an Oregon wetland

Creator:: Stewart, Scott R.
Abstract:: Wetland soils with complex stratigraphy and redoximorphic features occur on the margin of the Willamette Valley, Oregon. In the Jackson-Frazier wetland, vertisols show three distinct stratigraphic units that rest uncomformably upon each other and correspond to the Bashaw series Bss, 2Bt and 3BC horizons. Holocene alluvium deposited as distal alluvial...
Resource Type:: Dissertation

Essential oil components of Alaska cedar heartwood

Creator:: Xiong, Yeping
Abstract:: The essential oil of Alaska cedar heartwood is known to contain compounds which contribute to the remarkable durability of this species. While previous research has identified several compounds, a complete description of this oil, which has a "burnt-grape fruit" odor, has not been undertaken. In this research a profile of...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS First of all, I would especially like to thank my major professor Dr. Joseph J. Karchesy

ScholarsArchive@OSU

Investigation of a new resin as an exterior adhesive to bond high moisture content veneers

Douglas-fir inner bark procyanidins : sulfonation, isolation and characterization

The reaction of (+)-catechin with N-Hydroxymethylacetamide : a model for cross-linking PVA resins with tannins

Low molecular weight polyphenols in Douglas-fir outer bark : extraction, isolation and structure determination

Structural determination of a new carbohydrate-phenolic based resin coupled with urea

Polyphenols from the bark of Douglas-fir and red alder

Viscosity and bond quality of urea formaldehyde adhesive extended with acid modified and phosphorylated sago (Metroxylon sp)

Diarylheptanoid glycosides from red alder bark

Origin and age of Fe-Mn-P concretions and nodules in an Oregon wetland

Essential oil components of Alaska cedar heartwood

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