High thermal resistance amorphous copolyesters synthesized from bio‐based 2,5‐furandicarboxylic acid

Abstract

The polyesters with high Tg (≥100°C) and good clarity are desired in fabricating heat‐resistance containers such as baby bottles, cups, medical apparatus, and kitchen appliances. In this work, a series of poly(butylene bis[4‐(2‐hydroxyethoxy) phenyl] sulfone 1,4‐cyclohexanedimethylene 2,5‐furandicarboxylate) (PBSCFs) that show superior thermal and mechanical properties against current bio‐based polyesters were synthesized via a melt polycondensation method. The accurate chemical structures of PBSCFs were confirmed by 1H‐NMR and 13C‐NMR. The SEC results show that PBSCFs have number averaged molar mass (Mn) in the range of 9700–28,500 g/mol. The Tg of PBSCFs increase from 94°C for PBSF to 108°C for PBSCF‐50 as the increasing of CHDM unit. Meanwhile, the ductility of PBSCFs also improved with the elongation at break of PBSCF‐40 increased to 223%. In addition, the PBSCF‐40 sample reported in this paper shows thermal decomposition temperature of 427°C, transmittance of 84.6%, haze of only 0.17%, tensile strength of 74.1 MPa, and tensile modulus of 2287 MPa.

Strong, Tough, and Heat-Resistant Isohexide-Based Copolycarbonates: An Ecologically Safe Alternative for Bisphenol-A Polycarbonate

“…Comparison of PIsIeC-39 with commercial and literature benchmarks: (a) Performance comparison. (b) T g , tensile strength, and elongation at break compared with some high- T g copolycarbonates or copolyesters from other research studies including PICBF, PICC, PEManxT, PManxT, PEGluxT, PICBT, PECFF, PECTF, and PBSCF …”

Amorphous Copolyester with Ultrahigh Glass Transition Temperatures Based on 2,6‐Naphthalenedicarboxylic Acid and Bis[4‐(2‐Hydroxyethoxy) Phenyl] Sulfone‐Derived Building Blocks

“…As shown in Figure 2, only PEN showed a crystallization peak at 202.0 °C and a cold crystallization peak at 189.5 °C, followed by a T m at 272.2 °C with a Δ H m (melting enthalpy) of 5.9 J g −1 . This indicates that the introduction of BHEBS units in the terpolymer caused irregularity in polymer chain [ 21,30 ] as compared to PEN, therefore decreased remarkably the crystallinity of the product. It was worth mentioning that T g of PESNs increased as the amount of BHEBS units increased and was comparable to that of PEEK [ 22–24 ] (143 °C).…”

“…The proportion of BHEBS building block in synthetic polyester before and after feeding, intrinsic viscosity and M 𝜂 were shown in Table 1, it was found that all of the BHEBS building block were incorporated into the polymer structure based on the increased BHEBS content, attributed to the high boiling point and non-volatile properties of BHEBS monomers. [21,30]…”

“…It was worth mentioning that the intrinsic viscosities of PESN-50 and PESN-75 were lower than that of other PESNs. This was mainly due to the molecular chains becoming more difficult to move and increased steric hindrance [29] with the increase of bulk BHEBS [19,21,30] content.…”