Prediction of tensile modulus of semicrystalline polymers from a single melting curve recorded by calorimetry

• Published in: Journal of thermal analysis and calorimetry Vol. 134; no. 1; pp. 401 - 408
• Main Authors: Molnár, János, Jelinek, Anna, Maloveczky, Anna, Móczó, János, Menyhárd, Alfréd
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.10.2018; Springer; Springer Nature B.V
• Subjects: Analytical Chemistry; Calorimetry; Chemistry; Chemistry and Materials Science; Crystal structure; Crystallinity; Crystallization; Crystals; Heat measurement; Inorganic Chemistry; Mathematical analysis; Measurement Science and Instrumentation; Mechanical properties; Melting; Modulus of elasticity; Physical Chemistry; Polyamide resins; Polymer industry; Polymer Sciences; Polymers; Structure; Tensile tests; Tensile modulus; Melting curve; Prediction; Crystalline structure
• ISSN: 1388-6150; 1588-2926
• DOI: 10.1007/s10973-018-7487-1

This work introduces an easy calculation method, which results in the elastic modulus of semicrystalline polymers from data obtained from a single melting curve recorded by calorimetry. It is well known that the mechanical properties of semicrystalline polymers depend on the crystalline structure; however, the number of direct correlations between crystalline structure and mechanical properties is limited. The melting and crystallization of the polymers studied in this work were measured using calorimetry; the mechanical properties were estimated by tensile tests on the standard shape specimens. Good agreement was found between the calculated and measured modulus values, indicating that the correlation is reliable. In addition, the method was tested for polypropylene and polyamide-6 which proves clearly that the correlation reported here is generally valid for semicrystalline polymers.