The effect of moisture content and composition on tensile properties of the synthetic polymer/starch composition

A. Figiel; T. Zięba; W. Leszczyński

Published : 2022-09-01

Vol. 49 No. 7-8 (2004)

The effect of moisture content and composition on tensile properties of the synthetic polymer/starch composition

A. Figiel T. Zięba W. Leszczyński

Abstract

Systems consisted of polyethylene - ethylene/acrylic acid copolymer - starch differing in starch content (20-47 wt. %) were prepared by extrusion. The curves describing time dependence of water absorption have been determined gravimetrically. It has been found that investigated compositions absorbed water in amount proportional to starch content. Tensile properties of the compositions depended on starch content as well as on absorbed water content. Water content (W(t)) increase caused decrease in breaking stress (sigma(max)) and linear increase in breaking strain values (epsilon(max)). Elasticity modulus (E) values decreased linearly with W(t) value increasing, to the boundary value W(m) since with E became constant.

Keywords

tworzywo biodegradowalne ; skrobia ; polietylen ; kopolimer etylen/kwas akrylowy ; absorpcja wody ; właściwości wytrzymałościowe przy rozciąganiu biodegradable plastic ; starch ; polyethylene ; ethylene/acrylic acid copolymer ; water absorption ; tensile properties

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Figiel, A., Zięba, T., & Leszczyński, W. (2022). The effect of moisture content and composition on tensile properties of the synthetic polymer/starch composition. Polimery, 49(7-8), 547–550. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1783

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A. Figiel polimery@ichp.pl

Affiliation
Agricultural University of Wrocław, The Institute of Agricultural Engineering, ul. Chełmońskiego 37/41, 51-630 Wrocław

T. Zięba

Affiliation
Agricultural University of Wrocław, The Institute of Agricultural Engineering, ul. Norwida 25, 51-375 Wrocław

W. Leszczyński

Affiliation
Agricultural University of Wrocław, The Institute of Agricultural Engineering, ul. Norwida 25, 51-375 Wrocław