Effects of polyethyleneimine-functionalized MCM-41 on flame retardancy and thermal stability of polyvinyl alcohol--颗粒学报PARTICUOLOGY

Shabanian, M., Khoobi, M., Hemati, F., Khonakdar, H. A., Faghihi, K., Wagenknecht, U., ebrahimi, S. esmaeil S., & Shafiee, A. (2015). Effects of polyethyleneimine-functionalized MCM-41 on flame retardancy and thermal stability of polyvinyl alcohol. Particuology, 19, 14–21. https://doi.org/10.1016/j.partic.2014.04.004

Effects of polyethyleneimine-functionalized MCM-41 on flame retardancy and thermal stability of polyvinyl alcohol

Meisam Shabanian^{a b}, Mehdi Khoobi ^a, Farideh Hemati ^c, Hossein Ali Khonakdar ^d, Khalil Faghihi ^c, Udo Wagenknecht ^e, Seyed esmaeil Sadat ebrahimi ^a, Abbas Shafiee ^a *

a Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran 14176, Iran
b Faculty of Chemistry and Petrochemical Engineering, Standard Research Institute (SRI), P.O. Box 31745-139, Karaj, Iran
c Department of Chemistry, Faculty of Science, Arak University, Arak 38156-8-8349, Iran
d Iran Polymer and Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran
e Leibniz-Institute of Polymer Research, D-01069 Dresden, Germany

10.1016/j.partic.2014.04.004

Volume 19, April 2015, Pages 14-21

Received 25 January 2014, Revised 14 April 2014, Accepted 19 April 2014, Available online 30 July 2014.

E-mail: ashafiee@ams.ac.ir

Highlights

Abstract

Hyperbranched polyethylenimine (PEI)-functionalized mesoporous silica (MCM@PEI) was synthesized and used to produce poly(vinyl alcohol) (PVA) nanocomposites. The modified nanofiller was characterized with infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N₂ adsorption. When compared with pure mesoporous silica (MCM), the MCM@PEI nanoparticles exhibited better dispersion in the PVA matrix. The effects of MCM@PEI on the thermal and flame properties of PVA nanocomposites were also studied. Improvement in the thermal properties was confirmed by enhanced thermal stability and char yield. Incorporation of MCM@PEI in PVA led to a significant drop in the heat release rate and the total heat release.

Graphical abstract

Keywords

Nanocomposite; PVA; Nanofiller; MCM-41

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