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Effect of Plasticizers on the Properties of Polystyrene Films

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Jeffrey Csernica and Alisha Brown

Bucknell University, Department of Chemical Engineering, Lewisburg, PA 17837

J. Chem. Educ., 1999, 76 (11), p 1526

DOI: 10.1021/ed076p1526

Publication Date (Web): November 1, 1999

Abstract

An experiment is described in which polystyrene films containing various levels of plasticizers are prepared by solution-casting onto steel test panels. These films are subsequently tested for hardness using a pencil hardness technique, impact resistance using a drop weight test, and glass transition temperature using differential scanning calorimetry. All three plasticizers tested cause measurable changes in the physical properties of the plastic films, although the extent of the effects as a function of concentration varies dramatically among the plasticizers. Concepts of plasticization and interpretation of test results are discussed.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Polymer Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Materials Science

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