CRCU

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (3): 520-523.

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Allyl-containing Poly(aryl ether sulfone): Synthesis and Crosslinking

YU Yun-wu, XING Yan, GUO Mei-mei, LIU Bai-jun* and JIANG Zhen-hua   

  1. Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2010-10-21 Revised:2010-12-28 Online:2011-05-25 Published:2011-04-29
  • Contact: LIU Bai-jun E-mail:liubj@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.50973040) and the Science and Technology Development Plan of Jilin Province, China(No.20090322).

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Abstract: A novel type of crosslinkable poly(aryl ether sulfone)(PAES) bearing an allyl pendant(PES-OAllyl) was synthesized by a grafting reaction of hydrophenyl-containing PAES(PES-OH) and allyl bromide. PES-OH was prepared by a demethylation reaction of a methoxyphenylated PAES(PES-OCH3) in the presence of pyridine/hydrochlo- ride. The PES-OCH3 was synthesized by an aromatic nucleophilic substitution of bis(4-chlorophenyl)sulfone and (p-methoxy)phenylhydroquinone. Both DSC and solubility investigation were used to study the crosslinking behavior of PES-OAllyl. After heat treatment, the glass transition temperature(Tg) value of PES-OAllyl sharply increased from 165 °C to 227 °C. Meanwhile, PES-OAllyl changed from a soluble polymer to an insoluble thermoset. In addition, TGA(thermogravimetric analysis) result suggests that the thermal stability of the crosslinked product was improved. All the data prove that the crosslinked PES-OAllyl could be a potential solvent-resistance high-performance material.

Key words: Crosslinkable, Grafting reaction, Poly(aryl ether sulfone)