ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Nowadays as a result of the increasing environmental friendly consciousness and thedecreasing oil reserves, natural origin based materials are developed. These materials are not onlybased on renewable, natural resources, but capable of biodegradation in compost. Thesebiodegradable polymers (biopolymers) can be inserted into the nature’s recycling process. One ofthe most important biopolymers is starch. Starch can be processed like a thermoplastic material byadding plasticizers, creating the so called thermoplastic starch. However the price of starch is ratherlow, it has certain drawbacks retarding its wide industrial usage. It is sensitive to moisture, disruptsin pure water, has low mechanical properties, and in time it ages. This ageing or time-dependentbehavior was analyzed with injection molded tensile specimens. The shrinkage and mechanicalproperties of the specimens were determined as a function of ageing time. The fracture surface wasanalyzed by scanning electron microscope. The results of the measurements were compared withprevious examinations
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.589.281.pdf
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