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Foam extrusion behavior, morphology, and physical foam properties of organic cellulose ester

Published online by Cambridge University Press:  31 May 2013

Stefan Zepnik ,
Sven Hendriks ,
Stephan Kabasci  and
Hans-Joachim Radusch
Stefan Zepnik*
Affiliation:
Department Bio-based Plastics, Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT, Osterfelder Straße 3, 46047 Oberhausen, Germany; and Martin Luther University Halle-Wittenberg, Center of Engineering Sciences, Polymer Technology, 06099 Halle, Germany
Sven Hendriks
Affiliation:
Department Extrusion, RWTH Aachen University, Institute of Plastics Processing IKV, 52056 Aachen, Germany
Stephan Kabasci
Affiliation:
Department Bio-based Plastics, Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT, Osterfelder Straße 3, 46047 Oberhausen, Germany
Hans-Joachim Radusch
Affiliation:
Department Polymer Technology, Martin Luther University Halle-Wittenberg, Center of Engineering Sciences, 06099 Halle, Germany
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

This paper presents recent results of foam extrusion of thermoplastic cellulose acetate (CA) using HFO 1234ze as low global warming blowing agent and talc as nucleating agent. Foam extrusion behavior, physical foam properties, and foam morphologies were studied in detail with respect to blowing agent concentration and talc content. Depending on these parameters, thermoplastic CA exhibits excellent foam extrusion performance with good expansion behavior at the die. Talc as nucleating agent results in homogeneous fine foam morphologies with closed cells [i.e., Fig. 3(3)]. Depending on the blowing agent content and talc content, average cell size ranges from 1 to 0.12 mm and foam density ranges between 100 and 400 kg/m3.

Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 17: Focus Issue: Advances in the Synthesis, Characterization, and Properties of Bulk Porous Materials , 14 September 2013 , pp. 2394 - 2400
Copyright
Copyright © Materials Research Society 2013 

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References

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