Building up of Prosopis juliflora carbon incorporated cardanol based polybenzoxazine composites with intensification of
- PDF / 2,657,090 Bytes
- 18 Pages / 439.37 x 666.142 pts Page_size
- 109 Downloads / 198 Views
Building up of Prosopis juliflora carbon incorporated cardanol based polybenzoxazine composites with intensification of mechanical and corrosion resistance properties for adaptable applications V. Selvaraj1 · T. R. Raghavarshini1 Received: 1 July 2019 / Revised: 17 October 2019 / Accepted: 19 December 2019 © Springer-Verlag GmbH Germany, part of Springer Nature 2019
Abstract In the present work, amine-functionalized Prosopis juliflora carbon (APJC)-reinforced diphenyldiaminomethane-based cardanol benzoxazine (DDCBz) composites have been developed and characterized with a view to utilizing them for possible load-bearing and corrosion-resistant applications. Chemical structure of the DDCBz was ascertained using Fourier transform infrared, Proton nuclear magnetic resonance and Maldi mass spectroscopy. The 5 wt% APJC/DDCBz composites exhibit good hydrophobic character, thermal stability and mechanical properties compared to those of neat matrix and other wt% of APJC-reinforced composites. Similarly, glass transition temperature (Tg) and water contact angle of composites are enhanced according to their weight percentage concentration. Results from corrosion studies indicate that the mild steel specimens coated with DDCBz matrix and APJC/ DDCBz composites offer enhanced corrosion resistance. Data obtained from different studies infer that the APJC-reinforced DDCBz composites possess an improved thermal stability, thermomechanical behaviour, hydrophobic characteristics and corrosion-resistant properties, which make them suitable for high-performance thermal and corrosion-resistant applications. Keywords Cardanol benzoxazine · Amine-functionalized carbon · Thermal stability · Dielectric constant · Mechanical behaviour · Contact angle · Corrosion resistance
* V. Selvaraj [email protected]; [email protected]; [email protected] 1
Nanotech Research Laboratory, Department of Chemistry, University College of Engineering Villupuram (A Constituent College of Anna University, Chennai), Kakuppam, Villupuram, Tamil Nadu 605 103, India
13
Vol.:(0123456789)
Polymer Bulletin
Introduction Biobased polybenzoxazines are cured phenolic systems having superior properties, which are considered as better alternative to conventional types of phenolic resins. Polybenzoxazines have gained a considerable attention in the field of thermosetting polymers [1] due to their versatile mechanical, chemical and thermal properties, higher glass transition temperature, negligible moisture absorption and no released volatiles during polymerization process [2]. Conventional types of polybenzoxazine systems show brittleness due to high cross-linking density, and this behaviour causes inferior toughness character and limits its applications. Therefore, structural modifications of benzoxazines are essential in order to obtain an effective toughness and flexible properties for a wide range of new applications [3]. Benzoxazines are ring-type monomers that are capable of undergoing ring-opening polymerization reaction to form cr
Data Loading...
