A novel bisphenol A‐free polyarylates synthesis strategy: 4,4′‐sulfobisphenol/2,2‐bis(4‐hydroxyphenyl)butane co‐polyarylate prepared by interfacial polymerization

Abstract

A series of bisphenols, 4,4′‐sulfobisphenol (BPS)/2,2‐bis(4‐hydroxyphenyl)butane (BPB) co‐polyarylates with amorphous structures were synthesized from two BPS and BPB, and two different structures of benzoyl chloride monomers. The results of DFT calculations showed that the reaction activation energy of BPB with isophthaloyl chloride (IPC) and terephthaloyl chloride (TPC) was 8.05–8.40 Kcal/mol. The reaction activation energy of BPS with IPC and TPC was 38.73–39.09 Kcal/mol. GPC test results were consistent with theoretical calculations with BPS content from 0% to 15% resulting in a copolymer Mn of 22,000–11,600 and a Mw of 46,100–34,800. The intrinsic viscosity of co‐polyarylates ranged from 0.55 to 0.71 dL/g. The glass transition temperature (Tg) and 5% thermal weight loss of the co‐polyarylates were 179.3–205.4 °C and 461.4–487.8 °C, respectively. Improved solubility of co‐polyarylates in polar solvents. At the same time, the introduction of BPS did not result in any loss of mechanical properties, with Young's modulus in the range of 1444.32–1870.45 MPa, elongation at break in the range of 23.7%–30.8%, and tensile strength in the range of 52.21–59.38 MPa.

Synthesis and properties of novel block-structured polyarylates containing fluorene: a two-step interface polymerization

“…Its elongation at break remained at a high-level range. 39 There was a slight difference in the tensile strength of the polyarylate when the ratio of TPC/IPC increased from 7/3 to 8/2, while Young's modulus increased to different degrees. Therefore, the desired polyarylate could be obtained by adjusting the (reactant ratio) chloride ratio.…”

Design of polyarylates containing tert‐butyl cyclohexyl bulky side group with high transparency and low dielectric properties

“…43 Polyarylate (PAR) is a kind of high-performance plastic with good thermal stability (the temperature of 5% mass loss could be higher than 460 C) and good transparency (the transmittance at 450 nm is close to 85%-90%). [44][45][46][47][48] As a kind of thermoplastic resin, PAR can be processed through extrusion, injection, hot-pressing and solution method. Meanwhile, compared with PI, the ester bond has a lower polarity than that of the five-membered imine ring, it is beneficial to decrease the dielectric constant.…”