Characterization and mechanical properties of cellulose-graft-polyacrylonitrile prepared by using KMnO4/different acids as redox system

A. S. El-Khouly, Yoshiaki Takahashi, Akihiko Takada, A. A. Safaan, E. Kenawy, Y. A. Hafiz

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Cellulose-graft-polyacrylonitriles were prepared by using KMnO4/different acids redox system and the obtained samples were characterized by POM, SEM, 13C-NMR, XRD, TGA and their mechanical properties were investigated as a function of crystallinity degree (Cr %). In all cases, Cr decreased with increase of graft yield irrespective of acids species. Stress at break, strain at break and Young's modulus decreased with decreasing Cr %, which can be attributed to the increase of the amorphous region and the main chain rapture of cellulose. The mechanical properties of the samples prepared by strong acids became more poor than those for samples prepared by weak acids, indicating that more chain rupture occurred when strong acids are used.

Original languageEnglish
Pages (from-to)133-140
Number of pages8
JournalNihon Reoroji Gakkaishi
Volume38
Issue number3
DOIs
Publication statusPublished - Nov 4 2010

Fingerprint

polyacrylonitrile
Polyacrylonitriles
cellulose
Grafts
Cellulose
mechanical properties
Mechanical properties
acids
Acids
crystallinity
modulus of elasticity
Elastic moduli
Nuclear magnetic resonance
Oxidation-Reduction
nuclear magnetic resonance
Scanning electron microscopy
scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Characterization and mechanical properties of cellulose-graft-polyacrylonitrile prepared by using KMnO4/different acids as redox system. / El-Khouly, A. S.; Takahashi, Yoshiaki; Takada, Akihiko; Safaan, A. A.; Kenawy, E.; Hafiz, Y. A.

In: Nihon Reoroji Gakkaishi, Vol. 38, No. 3, 04.11.2010, p. 133-140.

Research output: Contribution to journalArticle

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