Evaluating the Performance of a Semiaromatic/Aliphatic Polyamide Blend: The Case for Polyphthalamide (PPA) and Polyamide 4,10 (PA410).

Mateo Gonzalez De Gortari,Amar K Mohanty,Manjusri Misra,Feng Wu

doi:10.3390/polym13193391

Mateo Gonzalez De Gortari, Amar K Mohanty + Show 2 more

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https://doi.org/10.3390/polym13193391

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Journal: Polymers	Publication Date: Oct 2, 2021
Citations: 6	License type: CC BY 4.0

Affiliation: University of Guelph

Abstract

This paper studies the structure–property–processing relationship of polyphthalamide (PPA) PPA/polyamide 4,10 (PA410) blends, via co-relating their thermal-mechanical properties with their morphology, crystallization, and viscoelastic properties. When compared to neat PPA, the blends show improved processability with a lower processing temperature (20 °C lower than neat PPA) along with a higher modulus/strength and heat deflection temperature (HDT). The maximum tensile modulus is that of the 25PPA/75PA410 blend, ~3 GPa, 25% higher than neat PPA (~2.4 GPa). 25PPA/75PA410 also exhibits the highest HDT (136 °C) among all the blends, being 11% more than PPA (122 °C). The increase in the thermo-mechanical properties of the blends is explained by the partial miscibility between the two polymers. The blends improve the processing performance of PPA and broaden its applicability.

Highlights

IntroductionPlastic is one of the most abundant materials produced by humanity
In the current era, plastic is one of the most abundant materials produced by humanity
-called commodity plastics, such as polystyrene (PS), polyethylene (PE), polyvinyl chloride (PVC) and polypropylene (PP), all used in applications where mechanical characteristics or melting points do not have high requirements, accounted for 78% of the worldwide demand of plastics in 2018 [1]

Summary

Introduction

Plastic is one of the most abundant materials produced by humanity. -called commodity plastics, such as polystyrene (PS), polyethylene (PE), polyvinyl chloride (PVC) and polypropylene (PP), all used in applications where mechanical characteristics or melting points do not have high requirements, accounted for 78% of the worldwide demand of plastics in 2018 [1]. More niche plastics exist, as they are engineered and used to fulfill specialized applications that commodity plastics cannot fulfill. These are commonly referred to as “engineering plastics” and include several of the currently available nylons that have increased mechanical or thermal properties, such as higher melting points. Though no formal definition exists for this group of polymers, Ullman’s Encyclopedia defines them as polymers that are able to maintain acceptable mechanical characteristics at temperatures above 150 ◦ C [2]

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