Aliphatic Segmented Poly(ether ester amide)s Synthesized from Hexanediamine, Sebacic Acid and Poly(ethylene glycol)s

doi:10.1007/s40242-016-5387-0

Abstract

Abstract:

High molecular weight aliphatic segmented poly(ether ester amide)s(PEEAs) were synthesized via melt polycondensation and chain extension. An oligomeric polyamide(PA) terminated mainly with -COOH groups(HOOC-PA-COOH) was prepared from the reaction of nylon 610 salt with sebacic acid. Melt polycondensation of HOOC-PA-COOH with polyethylene glycol(PEG), such as PEG400, PEG600, PEG1000 and PEG1500, was conducted at 200℃, and several segmented PEEA prepolymers(PrePEEAs) were prepared. Chain extension of PrePEEAs was carried out at 190℃ using 2,2'-(1,4-phenylene)-bis(2-oxazoline) and adipoyl biscaprolactamate as combination chain extenders. Chain extended PEEAs(ExtPEEAs) were characterized by gel permeation chromatography(GPC), Fourier transform infrared spectrophotometer(FTIR), proton nuclear magnetic resonance(¹H NMR), differential scanning calorimetry(DSC), wide angle X-ray scattering(WAXS), thermogravimetry analysis(TGA), and tensile test. The ExtPEEAs exhibited M_n up to 98700, T_m from 164.2℃ to 176.1℃, initial decomposition temperature above 320.6℃, tensile strength up to 34.80 MPa, and strain at break from 111.92% to 353.12%. Aliphatic segmented PEEAs with good thermal and mechanical properties were prepared.

Key words: Copolymer, Segmented, Poly(ester amide), Polycondensation, Chain extension

ZHAO Yanping, ZHAO Jingbo, ZHANG Zhiyuan, ZHANG Junying. Aliphatic Segmented Poly(ether ester amide)s Synthesized from Hexanediamine, Sebacic Acid and Poly(ethylene glycol)s[J]. Chemical Research in Chinese Universities, 2016, 32(3): 505-511.

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