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Permeation Properties of Laser-Sintered Polyamide 12 Sheets in Comparison to an Extruded Polyamide 12 Film

  • Laser sintering of polymers is widely used for the production of individual products and small-batch series. However, the qualification of laser-sintered polymeric components for new application fields, e.g. in the food and packaging industry, is still limited due to missing knowledge on physicochemical material properties. This work investigates the mass transfer of low molecular weight substances through laser-sintered polyamide 12 sheets in comparison to an extruded polyamide 12 film. Analysis of structural material properties reveals significant differences between both materials depending on the production processes. Despite their apparent porosity, laser-sintered sheets show lower permeation coefficients for water vapor and oxygen compared to extruded films. This might be related to the higher crystallinity of the laser-sintered vs. the extruded material, arising from the slow cooling rate of the polymer in the laser sintering process. This research brings knowledge of the different permeation behavior of laser-sintered andLaser sintering of polymers is widely used for the production of individual products and small-batch series. However, the qualification of laser-sintered polymeric components for new application fields, e.g. in the food and packaging industry, is still limited due to missing knowledge on physicochemical material properties. This work investigates the mass transfer of low molecular weight substances through laser-sintered polyamide 12 sheets in comparison to an extruded polyamide 12 film. Analysis of structural material properties reveals significant differences between both materials depending on the production processes. Despite their apparent porosity, laser-sintered sheets show lower permeation coefficients for water vapor and oxygen compared to extruded films. This might be related to the higher crystallinity of the laser-sintered vs. the extruded material, arising from the slow cooling rate of the polymer in the laser sintering process. This research brings knowledge of the different permeation behavior of laser-sintered and extruded polyamide 12 in relation to the structural properties.show moreshow less

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Metadaten
Author:Anna LiebrichORCiD, Horst-Christian LangowskiORCiDGND, Regina SchreiberORCiD, Bernd R. PinzerORCiD
DOI:https://doi.org/10.1007/978-3-662-60809-8_21
Identifier:978-3-662-60809-8 OPAC HS OPAC extern
Parent Title (English):Advances in Polymer Processing 2020
Publisher:Springer
Place of publication:Berlin
Editor:Christian Hopmann, Rainer Dahlmann
Document Type:conference proceeding (article)
Conference:International Symposium on Plastics Technology, 2020, Aachen
Language:English
Year of first Publication:2020
Tag:Crystal structure; Crystallinity; Laser sintering; Permeation properties; Polyamide 12; Porosity
Number of pages:12 Seiten
First Page:258
Last Page:269
Institutes:KLEVERTEC
IMS - Institut für Maschinelles Sehen
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften
Research focus:FSP2: Mobilität
FSP3: Produktion
Publication Lists:Pinzer, Bernd
Schreiber, Regina
Publication reviewed:begutachtet
Release Date:2020/07/13
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