Synthesis and Properties of Furan Heterocyclic Poly(aryl ether ketone)s
At present,in order to alleviate the shortage of non renewable resources,developing new materials based on renewable resources to supplement or replace non renewable resources and their derivatives has become a new research focus to achieve sustainable development.As an important high-performance engineering plastic,polyaryletherketone(PAEK)has been successfully commercialized and widely used in many key industries such as aerospace,national defense construction,and electronic information.However,traditional polyaryletherketone raw materials are all derived from petroleum derivatives.Therefore,developing new polyaryletherketones containing biogenic aromatic heterocycles and searching for new polymer materials that can maintain high performance of resins while introducing biogenic groups are methods for alleviating the current problem of non renewable resource shortage of petroleum,and will become one of the effective ways for the sustainable development of polymer materials.Based on the excellent properties of petroleum based polymers such as poly(terephthalic acid)(PTA),a new type of bio based furan heterocyclic polyaryletherketone polymer PIFEKs was synthesized by using 2,5-bis(4-fluorobenzoyl)furan(BFBF)as a substitute for PTA and copolymerizing with isosorbitol and bisphenol fluorene using a high-temperature solution method.And the structure and properties of PIFEKs were characterized by testing methods such as nuclear magnetic resonance,differential scanning calorimetry(DSC),and thermogravimetric analysis(TGA).The highest glass transition temperature(Tg)of PIFEKs was 229 ℃,and the highest five percent decomposition temperature(Td,5％)was 474 ℃.The heat resistance improved with the increase of the molar content of bisphenol fluorene monomer.The above data indicates that PIFEKs possess good heat resistance,which is close to the corresponding petroleum based polymer properties.The solubility test results show that PIFEKs have excellent solubility and can dissolve at room temperature in most common organic solvents.Their excellent solubility in common organic reagents is an important aspect of polyaryletherketone resin modification design,providing more diverse means for future processing applications of resins.
Biobased polymer materialsPoly(aryl ether ketone)Furan based polymerIsosorbitol
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