Evaluation of mechanical, thermal and water absorption behaviors of Polyalthia longifolia seed reinforced vinyl ester composites

B Stalin; N Nagaprasad; V Vignesh; M Ravichandran; Nagarajan Rajini; Sikiru Oluwarotimi Ismail; Faruq Mohammad

doi:10.1016/j.carbpol.2020.116748

Evaluation of mechanical, thermal and water absorption behaviors of Polyalthia longifolia seed reinforced vinyl ester composites

Carbohydr Polym. 2020 Nov 15:248:116748. doi: 10.1016/j.carbpol.2020.116748. Epub 2020 Jul 12.

Authors

B Stalin¹, N Nagaprasad², V Vignesh³, M Ravichandran⁴, Nagarajan Rajini⁵, Sikiru Oluwarotimi Ismail⁶, Faruq Mohammad⁷

Affiliations

¹ Department of Mechanical Engineering, Anna University, Regional Campus Madurai, Madurai, 625 019, Tamil Nadu, India. Electronic address: pbsmech@autmdu.ac.in.
² Department of Mechanical Engineering, ULTRA College of Engineering and Technology, Madurai, 625107, Tamil Nadu, India.
³ Department of Mechanical Engineering, Sethu Institute of Technology, Pulloor, Kariapatti, 626 115, Tamil Nadu, India.
⁴ Department of Mechanical Engineering, K. Ramakrishnan College of Engineering, Samayapuram, Tiruchirappalli, 621 112, Tamil Nadu, India.
⁵ Department of Mechanical Engineering, Kalasalingam University, Krishnankoil, Virudhunagar, 626 126, Tamil Nadu, India. Electronic address: n.rajini@klu.ac.in.
⁶ Department of Engineering, Centre for Engineering Research, School of Engineering and Computer Science, University of Hertfordshire, Hatfield, AL10 9AB, England, UK.
⁷ Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia 11451.

PMID: 32919554
DOI: 10.1016/j.carbpol.2020.116748

Abstract

This study presented a novel utilization of biomass solid waste, named Polyalthia longifolia (Mast tree) seed as a reinforcement in a composite, using a compression molding technique. An attempt was made to reinforce vinyl ester matrix (VE) with Polyalthia longifolia seed filler (PLSF), ranging from 5 to 50 wt% loadings. Mechanical properties of the fabricated Polyalthia longifolia seed filler/vinyl ester (PLSF-VE) composite samples were tested and analyzed. The results showed that the PLSF-VE composite exhibited optimum mechanical properties at 25 % wt of filler loading; ultimate tensile strength and modulus were approximately 32.50 MPa and 1.23 GPa, respectively. The ultimate flexural, impact strengths and hardness were observed around 125 MPa, 31.09 kJ/m² and 36.50, respectively. The heat deflection test and thermo-gravimetric analysis depicted that the PLSF-VE composites withstood up to 66 °C and 430 °C, respectively. Furthermore, the PLSF and its various composite samples were studied, using energy-dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM).

Keywords: Characterization; Compression molding; Polyalthia longifolia seed filler; Properties; Vinyl ester.

MeSH terms

Esters / chemistry*
Hardness
Materials Testing
Microscopy, Electron, Scanning
Physical Phenomena
Polyalthia / chemistry*
Polyalthia / metabolism
Seeds / chemistry*
Seeds / metabolism
Spectroscopy, Fourier Transform Infrared
Stress, Mechanical
Temperature
Tensile Strength
Thermogravimetry
Water / chemistry*
X-Ray Diffraction

Substances

Esters
Water