Improvement in nano‐pattern replication of injection molding by polyamide/dendrimer blend

In general, lower viscosity of materials leads to desirable nano‐pattern replication characteristics in injection molding processes. However, such materials do not meet the properties required for manufacturable products owing to their poor mechanical properties. In this study, we blended a small am...

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Bibliographic Details
Published inPolymer engineering and science Vol. 61; no. 3; pp. 822 - 829
Main Authors Kang, Donghoon, Kim, Hyung‐Il
Format Journal Article
LanguageEnglish
Published Hoboken, USA John Wiley & Sons, Inc 01.03.2021
Society of Plastics Engineers, Inc
Blackwell Publishing Ltd
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Summary:In general, lower viscosity of materials leads to desirable nano‐pattern replication characteristics in injection molding processes. However, such materials do not meet the properties required for manufacturable products owing to their poor mechanical properties. In this study, we blended a small amount of dendrimer with high‐viscosity polyamide 6 to lower viscosity and enhance flowability of the polymer blend while maintaining desirable mechanical properties. It was observed that the flowability of the polyamide 6/dendrimer blend increased significantly with an increase in dendrimer content without affecting the mechanical properties of high‐viscosity polyamide 6. To investigate the nano‐pattern replication characteristics of the blend, injection molding process and the mold of metal stamp were used to manufacture a nano‐pattern specimen. Blending more than 0.6 wt% of dendrimer with high‐viscosity polyamide 6 significantly improved its nano‐pattern replication characteristics and flowability. The injection molding process and the mold of metal stamp were used to manufacture a nano‐pattern specimen. Blending more than 0.6wt% of dendrimer with high‐viscosity polyamide 6 significantly improved its nano‐pattern replication characteristics and flowability.
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.25627