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Theses/Dissertations

Chemical engineering

Discipline
Institution
Publication Year
Publication

Articles 271 - 273 of 273

Full-Text Articles in Engineering

I The Production Of Paper From Cereal Straws Ii Utilization Of Agricultural Wastes For Production Of Miscellaneous Fabricated Materials , Edward Richard Whittemore Jan 1935

I The Production Of Paper From Cereal Straws Ii Utilization Of Agricultural Wastes For Production Of Miscellaneous Fabricated Materials , Edward Richard Whittemore

Retrospective Theses and Dissertations

Wet or moist attrition treatment of cornstalks frees the pith from the cortex fiber. Moist attrition treatment yields the most desirable cortex fiber for paper making. An upward flow of water agitated with air through the screen cover of a tank frees the cortex of pith and fine fiber. Water flotation allows the fine fiber to settle away from the floating pith. The cost is nominal and the products each have commercial uses. A yield of 70 percent over all is obtained and a 50 to 60 percent yield of pith is obtained;Dry attrition treatment of cornstalks frees the ...


Plastics From High Pentosanocellulosic Material , William Donald Harris Jan 1934

Plastics From High Pentosanocellulosic Material , William Donald Harris

Retrospective Theses and Dissertations

The investigational work was divided into two parts. In the first part, information was obtained as to the nature of the reactions of the individual constituents of high pentosanocellulosic materials with phenol or the cresols in the presence of a catalyst;Cellulose was found to act in two ways; it would either dissolve in phenol and zinc chloride, the zinc chloride acting as a solvent instead of catalyst, or it would undergo decomposition and condense with phenol to form a black, resinous material. Sulfuric acid served also as catalyst in the condensation, while sodium hydroxide did not. The presence of ...


The Use Of Polymers From Furfural In The Fabrication Of Molded Products , Richard Wedge Bruins Jan 1934

The Use Of Polymers From Furfural In The Fabrication Of Molded Products , Richard Wedge Bruins

Retrospective Theses and Dissertations

No abstract provided.