Microstructural, thermal and rheological correlations to mechanical response of polyamide-6(glass filled)/polyetherimide blend: effect of ethylene-octene copolymer on toughening of blend

Autor:	R. N. Jagtap, Linchon B. Mehta, Pratiket B. Bamane, Kunal K. Wadgaonkar, Pon Kumar Ramamoorthy
Rok vydání:	2018
Předmět:	Materials science Mechanical Engineering Rheometer 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Polyetherimide Elastomer 01 natural sciences 0104 chemical sciences law.invention Polyolefin chemistry.chemical_compound Crystallinity Viscosity chemistry Mechanics of Materials law Polyamide General Materials Science Crystallization Composite material 0210 nano-technology
Zdroj:	Journal of Materials Science. 53:11378-11392
ISSN:	1573-4803 0022-2461
DOI:	10.1007/s10853-018-2416-z
Popis:	Melt mixed glass-filled polyamide 6(PA6)/polyetherimide (PEI) blends were prepared in a co-rotating twin screw extruder over the entire composition range of 0–100 wt% of polyamide 6. These blends were characterized by structural, rheological, mechanical and thermal properties. Crystallization behavior and phase morphology of the blends were also investigated. The blend with the composition PA6/PEI 75/25 showed overall improved mechanical properties along with low resultant viscosity which can be processed on standard equipment. Shear viscosity along with shear stress of the blends were analyzed using shear rheometer which concluded that the blends can be processed on standard equipment due to resultant low viscosity. Scanning electron microscope micrographs revealed that the morphology of the blends showed a two phase structure in which the minor phase was dispersed as domains in the continuous phase. Polyolefin elastomer (POE) as impact modifier was added to the above composition in the range of 0–15 phr to study its effect. The thermal characteristics of PA6, PEI, and PA6/PEI blends with and without POE were investigated using DSC and TGA which revealed that the melting temperature and crystallization temperature of the blend remained unchanged while XRD results showed percent crystallinity was increased slightly. Furthermore, it can be said that the blend with composition PA6/PEI 75/25 with 10 phr impact modifier loading was suitable for high end applications because it combines the high mechanical properties of glass-filled PA6 with inherent flame-retardant property of PEI while POE overcomes the physical weakness of moisture absorption.
Databáze:	OpenAIRE
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