Synthesis of novel poly(arylene ether amide) containing aliphatic ring for optical property

Abstract

In this work, the monomer N, N′-bis(4-fluorobenzamide)dicyclohexyl methane (BFDCM) was synthesized successfully by 4-fluorobenzoylchloride and 4,4′-diaminodicyclohexylmethane through interfacial reaction, and then the monomer BFDCM and 1,4-benzenediol (HQ) or 4.4′-biphenol (BH) were used to prepare the novel poly(arylene ether amide) (HQ-BFDCM and BH-BFDCM) containing an aliphatic ring in the main chain by nucleophilic substitution in NMP solution. These two polymers exhibited the inherent viscosities ranging from 0.828 to 1.044 dL g−1, high glass-transition temperatures (Tg) of 214.1–235.0 °C, and weight-loss temperature (T5%) of 425.2–441.3 °C. The polymers HQ-BFDCM and BH-BFDCM could completely or partly dissolve in some polar solutions, such as NMP, DMF, and so on, and they showed moderate corrosion resistance. Additionally, the obtained polymers HQ-BFDCM and BH-BFDCM exhibited good optical property, and the optical transmittances of HQ-BFDCM and BH-BFDCM were 74% and 80% at 450 nm, respectively, which showed that they could be applied to the heat-resistant optical films.

Copolymers of poly(aryl ether ketone)/poly(ether ether amide) containing different numbers of methylene in the main chain: Synthesis and properties

“…Yan 27 designed and synthesized two kinds of semi‐aromatic polyamides containing dicyclohexane units, the obtained polymers exhibited excellent thermal and mechanical property (T g = 217.2–236.9°C, T d = 429.8–442.3°C, tensile strength = 75.6–77.6 MPa). Luo 28 also synthesized PEEA with high content of cyclohexyl group in the long chain, the synthesized polymers not only had good thermodynamic property and solubility, but also had good light transmission property (T g = 214.1–235.0°C, T d = 425.2–441.3°C, optical transmittances = 74%–80% at 450 nm). Liu 29 incorporated bisphenol fluorene into the molecular chain of polyether ether ether amide, the obtained polymers exhibited low dielectric constants and good thermodynamic property (T g = 197.6–236.2°C, T d = 450–462°C).…”