Studies on crystallinity of PEEK/PEK/BT nanocomposites by using differential scanning calorimetry (DSC) technique and crystallinity effect on mechanical properties. (November 2013)

• Record Type: Journal Article
• Authors: Mandal, S; Alam, S
• Is Part Of: Materials research innovations. Volume 17:Number 6(2013)
• Page Start: 366
• Page End: 372
• Publication Date: 2013-11
• Subjects: Nanocomposites -- Differential scanning calorimetry -- Crystallinity -- Tensile strength -- Impact strength; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1433075X12Y.0000000033
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract : In the present study, the mechanical and thermal properties of the nanocomposites of optimised poly(ether ether ketone) (PEEK) and poly(ether ketone) (PEK) blend incorporated with nano-barium titanate (nano-BT) were investigated. The optimised blend was based on the mechanical and thermal properties of PEEK and PEK in the ratio of 80∶20. Nanoparticles were incorporated into the optimised blend with the help of a twin screw extruder. The concentration of nano-BT was varied from 2 to 6 wt-%. The crystallinity of the nanocomposites was calculated using differential scanning calorimetry method. With the increase in the nanosized BT concentrations, the tensile strength, tensile modulus and impact strength increased while the elongation at break and crystallinity decreased. The crystallinity of the nanocomposites influenced the elongation at break. Morphological studies were carried out using SEM. The nanocomposites were evaluated using the theoretical predictive model known as 'Pukanszky model' applicable to the tensile strength of the nanocomposites.