Masters Theses
Abstract
"Soy hull is a byproduct of soybean processing; the material is primarily used as animal feed. However, because of its fiber content it is drawing attention in human nutrition as well. The center for Environmental Science and Technology at the University of Missouri - Rolla has been engaged in developing other economical non-traditional uses for this and other soy products. A plastic market segment, which offers a good opportunity for industrial use of soy hull, is the controlled rigidity polyurethane foam.
A few attempts to incorporate soy-protein isolates or soybean oil derived polyols have been described in the literature. Both of these materials are higher cost soyproducts. Most of the work was focused on using the soy products as filler in polyurethane foams. The current research was focused on the use of soy hull as a partial replacement for the polyol in the manufacture of polyurethane foams.
The research led to the development of a process for generating soy hull augmented controlled-rigidity polyurethane foam. The process relies on incorporation of partially hydrolyzed soy hulls into water blown poly-urethane formulations. The partial hydrolysis of cellulose, hemi cellulose, and lignin enhances interaction between isocyanate and the hydroxyl groups of the oligosaccharides and the amine groups of the oligopeptides to form controlled-rigidity foam structures. Results show that soy hull augmented foams possess superior tensile strength, compressive strength, and hardness. Direct incorporation of ground soy hulls, by contrast, leads to high-density foam with poor mechanical properties."--Abstract, page iii.
Advisor(s)
Dr. V. J. Flanigan
Committee Member(s)
Dr. Shubhender Kapila
Dr. K. Chandrashekhara
Department(s)
Mechanical and Aerospace Engineering
Degree Name
M.S. in Mechanical Engineering
Publisher
University of Missouri--Rolla
Publication Date
Fall 2003
Pagination
x, 54 pages
Note about bibliography
Includes bibliographical references (pages 52-53)
Rights
© 2003 Vijay Manohar Kakarla, All rights reserved.
Document Type
Thesis - Restricted Access
File Type
text
Language
English
Subject Headings
Polyurethanes -- Technological innovations
Soy bran
Foamed materials -- Mechanical properties
Thesis Number
T 8391
Print OCLC #
55132656
Recommended Citation
Kakarla, Vijay Manohar, "Preparation of soy augmented water blown polyurethane foam and evaluation of mechanical properties" (2003). Masters Theses. 2425.
https://scholarsmine.mst.edu/masters_theses/2425
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