Synthesis and characterization of biodegradable alternating polyesteramides from mixed diamidediols and sebacic acid

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• 作者：Huiyun Sun (1)
  Tiao Yin (1)
  Yue Li (1)
  Jingbo Zhao (1)
  Zhiyuan Zhang (1)
  Junying Zhang (1)
  
• 关键词：Alternating polyesteramide ; Polycondensation ; Chain extension ; Diamidediol
• 刊名：Chemical Research in Chinese Universities
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：30
• 期：1
• 页码：168-175
• 全文大小：630 KB
• 作者单位：Huiyun Sun (1)
  Tiao Yin (1)
  Yue Li (1)
  Jingbo Zhao (1)
  Zhiyuan Zhang (1)
  Junying Zhang (1)
  
  1. Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
  
• ISSN：2210-3171

文摘

A series of polyesteramide prepolymers[PrePEA(0/4,8)s] having mixed alternating bisesterdiamide units was synthesized via melt polycondensation from N,N-bis(2-hydroxyethyl)oxamide(0) and N,N-bis(2-hydroxyethyl)-adipamide(4) with sebacic acid(8) at different molar ratios. Chain extension of them was conducted with 2,2-(1,4-phenylene)-bis(2-oxazoline) and adipoyl biscaprolactamate as combined chain extenders. The chain extended polyesteramides[ExtPEA(0/4,8)s] were characterized by proton nuclear magnetic resonance(1H NMR), gel permeation chromatography(GPC), differential scanning calorimetry(DSC), thermogravimetry analysis(TGA), wide angle X-ray scattering, tensile test and enzymatic degradation. The results show that ExtPEA(0/4,8)s were crystalline polyesteramides. They had T m up to 136.5 °C and initial decomposition temperature above 297.5 °C. They crystallized in similar crystallites into Nylon-66 and degraded under the catalysis of protease or lipase. They are thermoplastic materials with tensile strength up to 21.5 MPa and elongation at break above 64.0%.