Semi-aromatic copoly(ether ether amide): Synthesis and properties

摘要

A series of semi-aromatic copoly(ether ether amide)s (hydroquinone (HQ) (0%)-HQ (100%)) were synthesized by 1,1-bis(4-hydroxyphenyl)-1-phenylethane (BHPPE), 1,4-benzenediol (HQ) and 1,6-N,N '-bis(4-fuorobenzamide) hexane (BFBH) in this work. The inherent viscosities of copoly(ether ether amide)s were in the range of 0.487-0.769 dl g(-1). Following with increase of the content of HQ, the resultant polymers were converted from amorphous to crystalline. The copolymers were found to have high glass transition temperatures (T-g) of 141.4-155.6 degrees C and weight-loss temperature (T-5%) of 423.3-434.3 degrees C. They can be hot-pressed into films with tensile strength of 63.3-87.6 MPa, and storage modulus over 0.8 GPa at about 150 degrees C, indicating good thermal and mechanical property of the obtained copolymers. The results of rheological property showed that the copolymers had good melt flowability and thermal stability. Additionally, the introduction of HQ improved the corrosion resistance of copolymers, the obtained polymers HQ (60%), HQ (80%) and HQ (100%) exhibited better corrosion resistance than that of HQ (0%). Especially, HQ (80%) and HQ (100%) were insoluble in organic polar solvents such as DMSO, DMF because of their crystalline nature, indicating that they had potential to be applied to the corrosion-resistant materials.