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

A. S. El-Khouly; Y. Takahashi; A. Takada; A. A. Safaan; E. Kenawy; Y. A. Hafiz

doi:10.1678/rheology.38.133

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

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

Department of Advanced Device Materials

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	133-140
Number of pages	8
Journal	Nihon Reoroji Gakkaishi
Volume	38
Issue number	3
DOIs	https://doi.org/10.1678/rheology.38.133
Publication status	Published - 2010

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1678/rheology.38.133

Cite this

@article{487f9d1d7c9144d79634042a001338ca,

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

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.",

author = "El-Khouly, {A. S.} and Y. Takahashi and A. Takada and Safaan, {A. A.} and E. Kenawy and Hafiz, {Y. A.}",

year = "2010",

doi = "10.1678/rheology.38.133",

language = "English",

volume = "38",

pages = "133--140",

journal = "Nihon Reoroji Gakkaishi",

issn = "0387-1533",

publisher = "Society of Rheology",

number = "3",

}

TY - JOUR

T1 - Characterization and mechanical properties of cellulose-graft-polyacrylonitrile prepared by using KMnO4/different acids as redox system

AU - El-Khouly, A. S.

AU - Takahashi, Y.

AU - Takada, A.

AU - Safaan, A. A.

AU - Kenawy, E.

AU - Hafiz, Y. A.

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=78049295595&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78049295595&partnerID=8YFLogxK

U2 - 10.1678/rheology.38.133

DO - 10.1678/rheology.38.133

M3 - Article

AN - SCOPUS:78049295595

SN - 0387-1533

VL - 38

SP - 133

EP - 140

JO - Nihon Reoroji Gakkaishi

JF - Nihon Reoroji Gakkaishi

IS - 3

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this