Abstract
The compatibility of polyketone (PK)/polyamide 6 (PA) polymer blends was studied to expand the use of PK polymers with polyamide 6 blends. Tensile strength showed negative deviation, but flexural modulus and Izod impact strength showed positive deviation with composition according to the linear mixing law. Differential scanning calorimetry and X-ray diffraction analyses showed that little shift in the glass transition temperature (Tg) and diffraction angles of the blends. Tg shifts were observed in the PK-rich and PA-rich compositions in dynamic mechanical tests, but a broadened bandwidth of tanδ peak and shoulder peaks were present in the PK30/PA70 and PK50/PA50 ranges. The blend morphology showed good interfacial adhesion and appeared as submicron domains in the PK-rich and PA-rich blends. Interfacial adhesion and the domain sizes larger than the critical size of the blend contributed to the improved impact strength of the PK/PA blend. Infrared spectroscopy showed that the hydrogen bonds in each polymer chain were reduced in blending, indicating a certain level of molecular blending between the PK and PA polymers. The results of this study suggest that PK/PA blends are partially miscible.
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01 September 2023
A Correction to this paper has been published: https://doi.org/10.1007/s10965-023-03736-0
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This work was supported by the Jungwon University Research Grant [Grant No. 2021-023].
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Son, Y., Lee, S. Compatibility between aliphatic polyketone terpolymer and Nylon6 polymer blend. J Polym Res 30, 33 (2023). https://doi.org/10.1007/s10965-022-03414-7
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DOI: https://doi.org/10.1007/s10965-022-03414-7