American Journal of Polymer Science and Technology

Volume 8, Issue 2, June 2022

  • Preparation and Properties of Polyimide/Mesoporous SiO2 Composite Films with Low Dielectric Constant

    Zi-xiang Wang, Rong-rong Zheng, Lei Han, Shu-wu Chen, Hong-tao Wu, Jing-ying Wang, Xing-wei Li, Hongjing Liu, Liyan Wang

    Issue: Volume 8, Issue 2, June 2022
    Pages: 21-27
    Received: 11 April 2022
    Accepted: 4 May 2022
    Published: 24 May 2022
    DOI: 10.11648/j.ajpst.20220802.11
    Abstract: In this paper, mesoporous silica (NH2-SiO2) containing amino groups was firstly prepared using amino-ended hyperbranched polyamides as template agent and KH550 as surface treatment agent, and then polyimide/mesoporous NH2-SiO2 composites with low dielectric constant were successfully prepared by in situ polymerization method. The composite materias... Show More
  • Valorization of the Pn-Pozzolana to the Synthesis of Fe-pn-Pozzolana Study - Application to the Synthesis of the Fe-Pn-SiO2

    Andry Tahina Rabeharitsara, Ando Princia Randriamalala, Nambinina Richard Randriana, Baholy Robijaona, Marie Hanitriniaina Ratsimba

    Issue: Volume 8, Issue 2, June 2022
    Pages: 28-37
    Received: 12 July 2022
    Accepted: 27 July 2022
    Published: 5 August 2022
    DOI: 10.11648/j.ajpst.20220802.12
    Abstract: The valorization of pozzolana into pn-pozzolana used as water softening was studied. This article treated particularly the valorization of the pn-pozzolana and pn-SiO2 by adding iron-Fe atoms to give the Fe-pn-pozzolana and Fe-pn-SiO2. Two synthesis procedures were used with the ironIIethoxide Fe(OEt)2 as precursor material of the iron-Fe atoms dep... Show More