Curing epoxy resin with anhydride in the presence of halloysite nanotubes: the contradictory effects of filler concentration - Publication - Bridge of Knowledge

Search

Curing epoxy resin with anhydride in the presence of halloysite nanotubes: the contradictory effects of filler concentration

Abstract

Epoxy resins can be cured with a wide variety of curing agents such as amines and anhydrides, but anhydride curing would be more favorable for research purpose because of epoxy-anhydride curing taking place slowly at room temperature. Incorporation of natural nanosized minerals into epoxy is of environmental importance. Halloysite nanotubes (HNTs) display chemical properties similar to those of silica and alumina, and hydroxyl groups positioned somewhere in between or at the edge of HNTs layers give them potential to participate in epoxy ring-opening. Curing epoxy/anhydride systems containing HNTs at various concentrations (0.5, 1 and 2 wt.% based on 100 parts by weight of epoxy) via nonisothermal differential scanning calorimetry at three heating rates (5, 10 and 15 °C.min−1) is discussed here to study the effect of HNTs concentration on epoxy-anhydride curing reactions. The extent of crosslinking reaction was promoted at 0.5 and 1 wt.% of HNTs as a result of participation of hydroxyl groups of HNTs in epoxide ring-opening, while at 2 wt.% of HNTs a hindered curing was the case, which has been speculated on account of probable deactivation of anhydride curing agent by the internal surface of HNTs pursued by anhydride molecules diffusion into the lumen of HNTs.

Citations

  • 7 2

    CrossRef

  • 0

    Web of Science

  • 7 0

    Scopus

Authors (7)

  • Photo of  Maryam Jouyandeh

    Maryam Jouyandeh

    • University of Isfahan, Faculty of Engineering Department of Chemical Engineering
  • Photo of  Zohre Karami

    Zohre Karami

    • University of Isfahan, Faculty of Engineering Department of Chemical Engineering
  • Photo of  Omid Moini

    Omid Moini

    • University of Isfahan, Faculty of Engineering Department of Chemical Engineering
  • Photo of  Seyed Paran

    Seyed Paran

    • ran Polymer and Petrochemical Institute, Tehran, Iran Department of Polymer Processing
  • Photo of  Ali Jannesari

    Ali Jannesari

    • Institute for Color Science and Technology, Tehran, Iran Department of Resin and Additives
  • Photo of  Mohammad Saeb

    Mohammad Saeb

    • Institute for Color Science and Technology, Tehran, Iran Department of Resin and Additives

Cite as

Full text

full text is not available in portal

Keywords

Details

Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
PROGRESS IN ORGANIC COATINGS no. 126, pages 129 - 135,
ISSN: 0300-9440
Language:
English
Publication year:
2019
Bibliographic description:
Jouyandeh M., Karami Z., Moini O., Formela K., Paran S., Jannesari A., Saeb M.: Curing epoxy resin with anhydride in the presence of halloysite nanotubes: the contradictory effects of filler concentration// PROGRESS IN ORGANIC COATINGS. -Vol. 126, (2019), s.129-135
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.porgcoat.2018.10.007
Verified by:
Gdańsk University of Technology

seen 174 times

Recommended for you

Meta Tags