Preparation and Properties of DCP-Crosslinked Biobased Polyamide

Abstract

In this work, a new bio-based hybrid polyamide (BDIS) was prepared and was cross-linked by dicumyl peroxide (DCP) with dose ranging from 1 to 7%. The state of cure was observed in vulcameter, and the vulcanization condition was determined subsequently. The cross-linking efficiency of BDIS/DCP blends was assessed using torque, gel content measurements and infrared spectroscopy (FTIR). DCP dose below 1% was not sufficient to reach gelation. Over 1%, the gel content increased with increasing DCP dose. The cross-linked BDIS films exhibited enhanced toughness and mechanical properties compared to precursors. Optimal mechanical properties were obtained with concentration of about 5 wt % DCP. At higher doses, the tensile strength and the elongation at break were decreased due to scission reactions.

Synthesis and Characterization of Unsaturated Biobased-Polyamides from Plant Oil

“…Polyamides are mainly produced through polycondensation of ω-amino carboxylic acids or dicarboxylic acids with diamines, and the ring-opening polymerization of lactams . Polyamides synthesized from fossil resources have high thermal and mechanical strengths making them suitable engineering plastics used in different industrial fields such as electric and electronics, packaging, automotive, clothing, and several other areas. − Moreover, because of their high tensile strength and good elasticity as well as flexibility, polyamides have also been used in pharmaceutical and clinical applications to produce sutures, catheters, and dental resins. Petrochemical-based polyamides have a more severe impact on global climate change compared to other synthetic polymers, specifically in terms of carbon dioxide equivalents .…”