Synthesis and characterization of novel cyanofunctionalized poly(aryl ether ketone)s

Abstract

Abstract:A series of cyanophenyl-substituted poly(aryl ether ketone)s (PAEKs) have been successfully synthesized from two new bisphenol monomers, (3,4-dicyano) phenylhydroquinone and (4-cyano) phenylhydroquinone respectively, and the thermal behaviour and the solubility have been characterized. These polymers exhibited high glass transition temperatures and excellent thermal stability. The glass transition temperatures ranged from 173 to 217 o C, and 5% weight-loss temperatures were above 470 o C. The solubilities of these polymers have been remarkably improved in common organic solvents over PEEK and PEN. Some polymers formed transparent, strong, and flexible films, with tensile strength of 106.5-125.2 MPa, Young's moduli of 2.68-3.20 GPa, and elongations at break of 9-16 %.

The effect of recycling number on the mechanical, chemical, thermal, and rheological properties of PBT/PC/ABS ternary blends: With and without glass‐fiber

“…PBT has also low water absorption [1] and short cycle times in injection molding [2]. Due to above properties, PBT finds application area in the automotive and electronic industries widely [3]. But, it is known that molded products of PBT have low notched Izod impact strength [1].…”

“…PC has high hardness and toughness properties. PC possesses also some properties such as transparency, flame resistance, dimensional stability, high impact strength, and a wide range of service temperature [3]. However, PC has some negative properties such as poor solvent resistance, low fatigue strength, and high melt viscosity [3].…”

“…In general, it is believed that the PBT/PC blend takes its chemical resistance from PBT and its high toughness from PC [3]. Variation in mechanical properties with adding PBT in PC was investigated in the literature and it was observed that the tensile modulus of PC increased with increasing PBT content [26].…”

The microstructure and dielectric properties of modified poly(aryl ether ketone)/metallophthalocyanine composites

“…The polymers CN-PAEK, 2CN-PAEK and SPAEK were prepared in our laboratory according to the previously published protocols. [29][30][31] The dimethyl sulfoxide was of analytical grade and was dried with CaH 2 followed by distillation in vacuo prior to use.…”