A prospective partial bio-based diamine-adenine-monomer platform for high performance polymer: A case study on phthalonitrile resin
2019
Liu, Yao | Hu, Jianghuai | Li, Renke | Li, Chengfeng | Liang, Bo | Liu, Yang | Peng, Weifeng | Zeng, Ke | Yang, Gang
A novel partial bio-based molecular design platform for high performance polymer (HPP) namely diamine-adenine-monomer platform (DAAMP) was suggested and discussed in this paper. Aimed at introducing the adenine moiety into backbone of HPP and endowing great wide molecular tailorability, DAAMP was synthesized via a nucleophilic displacement between 6-chloropurine and various diamines. Phthalonitrile (PN) resin is a typical class of HPP. To verify the feasibility of DAAMP for HPP design, two new phthalonitrile monomers based on two different diamine namely DAAMP-PN were synthesized. The chemical structures of synthesized monomers were confirmed by Fourier Transform Infrared spectroscopy (FTIR) and Nuclear Magnetic Resonance (NMR). The two new DAAMP-PNs based on different diamines showed an obvious difference in thermal polymerization behavior. Multiple hydrogen bonding was exhibited in DAAMP-PN system. And the prepared DAAMP-PN polymer showed high glass transition temperature, excellent thermal and thermo-oxidative stabilities. The results demonstrated that DAAMP is a promising building-block for HPP design with flexible molecular tailorability.
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