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Tensile Strength Measurements on Biopolymer Films

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Eugene S. Stevens and Mark D. Poliks

Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902

J. Chem. Educ., 2003, 80 (7), p 810

DOI: 10.1021/ed080p810

Publication Date (Web): July 1, 2003

Section:

History, Education, and Documentation

Abstract

An experiment is described in which students prepare biopolymer (agar, gelatin, and starch) films from aqueous solution and measure the tensile strengths of the films using easily constructed equipment. Agar and gelatin form moderately strong films. Starch forms weak films but the strength is increased by combining with agar and gelatin.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Environmental Chemistry

Keywords (Subject):

Biotechnology

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