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Full-Text Articles in Art and Design

Non-Traditional Lightweight Polypropylene Composites Reinforced With Milkweed Floss, Narendra Reddy, Yiqi Yang Jul 2010

Non-Traditional Lightweight Polypropylene Composites Reinforced With Milkweed Floss, Narendra Reddy, Yiqi Yang

Faculty Publications - Textiles, Merchandising and Fashion Design

Lightweight composites are preferred for automotive applications due to the weight restrictions and also due to the presence of inherent voids that can enhance the sound absorption of these composites. The density of the reinforcing materials plays a crucial role in such lightweight composites. Milkweed is a unique natural cellulose fiber that has a completely hollow center and low density (0.9 g cm−3) unlike any other natural cellulose fiber. The low density of milkweed fibers will allow the incorporation of higher amounts of fiber per unit weight of a composite, which is expected to lead to lightweight composites ...


Structure And Properties Of Ultrafine Silk Fibers Produced By Theriodopteryx Ephemeraeformis, Narendra Reddy, Yiqi Yang Jan 2010

Structure And Properties Of Ultrafine Silk Fibers Produced By Theriodopteryx Ephemeraeformis, Narendra Reddy, Yiqi Yang

Faculty Publications - Textiles, Merchandising and Fashion Design

Theriodopteryx ephemeraeformis commonly known as bag worms produce ultrafine silk fibers that are remarkably different than the common domesticated (Bombyx mori) and wild (Saturniidae) silk fibers. Bag worms are considered as pests and commonly infect trees and shrubs. Although it has been known that the cocoons (bags) produced by bag worms are composed of silk, the structure and properties of the silk fibers in the bag worm cocoons have not been studied. In this research, the composition, morphology, physical structure, thermal stability, and tensile properties of silk fibers produced by bag worms were studied. Bag worm silk fibers have considerably ...


Developing Water Stable Gliadin Films Without Using Crosslinking Agents, Narendra Reddy, Yiqi Yang Jan 2010

Developing Water Stable Gliadin Films Without Using Crosslinking Agents, Narendra Reddy, Yiqi Yang

Faculty Publications - Textiles, Merchandising and Fashion Design

Abstract For the first time, gliadin films with excellent strength and water stability have been developed without using any crosslinking agents. So far, it has not been possible to obtain water stable gliadin films even after crosslinking. In this research, a novel method of using aqueous urea and ethanol has been developed to obtain highly water stable gliadin films without using crosslinking chemicals. The effects of concentrations of gliadin, urea and ethanol on the strength of the films and the stability of the films in water at high temperatures and various pH conditions has been studied. Gliadin films developed in ...


Structure And Properties Of Cocoons And Silk Fibers Produced By Hyalophora Cecropia, Narendra Reddy, Yiqi Yang Jan 2010

Structure And Properties Of Cocoons And Silk Fibers Produced By Hyalophora Cecropia, Narendra Reddy, Yiqi Yang

Faculty Publications - Textiles, Merchandising and Fashion Design

This paper shows that silk fibers produced by cecropia (Hyalophora cecropia) have similar tensile properties but different amino acid composition than that of mulberry (Bombyx mori) silk. The cecropia fibers are also much finer and have better strength and modulus than tasar silk, the most common non-mulberry silk. Cecropia is one of the largest silk producing moths and has similar lifecycle to that of mulberry silk but is easier to grow and produces larger cocoons than mulberry silk. In this study, we have characterized the composition, morphology, physical and tensile properties, and thermal behavior of the cecropia silk. Cecropia cocoons ...