Authors:
B. Nandan Defence Materials and Stores Research and Development Establishment, DMSRDE P.O. G.T. Road Kanpur 208013 India G.T. Road Kanpur 208013 India

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K. Pandey Defence Materials and Stores Research and Development Establishment, DMSRDE P.O. G.T. Road Kanpur 208013 India G.T. Road Kanpur 208013 India

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G. Pandey Defence Materials and Stores Research and Development Establishment, DMSRDE P.O. G.T. Road Kanpur 208013 India G.T. Road Kanpur 208013 India

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A. Singh Defence Materials and Stores Research and Development Establishment, DMSRDE P.O. G.T. Road Kanpur 208013 India G.T. Road Kanpur 208013 India

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L. Kandpal Defence Materials and Stores Research and Development Establishment, DMSRDE P.O. G.T. Road Kanpur 208013 India G.T. Road Kanpur 208013 India

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G. Mathur Defence Materials and Stores Research and Development Establishment, DMSRDE P.O. G.T. Road Kanpur 208013 India G.T. Road Kanpur 208013 India

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Abstract  

Binary blends of poly (ether sulphone) (PES) and Nylon-6 were prepared in a whole range of composition by melt extrusion. Miscibility behaviour of the blends were studied using thermal analytical techniques like differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). Due to the rapid crystallization of Nylon-6 as it is cooled from the melt state, its glass transition behaviour could not be detected even in the quenched samples by DSC. Furthermore, the crystallization and melting behaviour of the blends have been studied by DSC. DMA results show that the dynamic storage modulus of the blends were in-between those of the constituent polymers. Also the glass transition of Nylon-6 phase as determined by the peak in loss tangent remains constant which shows that the two polymers are immiscible. Thermal expansion coefficient of the blends as determined by TMA is greater than that of Nylon-6 signifying the increased dimensional stability of the blends at higher temperatures. Morphological studies done by scanning electron microscopy (SEM) show the biphasic nature of the blends, with clear cut boundaries between the phases because of poor interfacial adhesion. Dispersed particle size is small when Nylon-6 is the dispersed phase because of its lower melt viscosity as compared to PES. Thermal stability of the blends was measured using thermogravimetric analysis (TG). Two-step decomposition behaviour was observed because of macro-phase separated morphology.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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