TITLE:
Radiation Induced Grafting of Acrylic Acid onto Viscose Rayon Fabrics and Its After-Effects
AUTHORS:
M. F. Barakat, K. M. El-Salmawy, A. H. Zahran
KEYWORDS:
Viscose Rayon, Copolymerization, Acrylic Acid, Comonomer, Gamma Irradiation, Radiation Grafting, Graft Yield
JOURNAL NAME:
Open Journal of Polymer Chemistry,
Vol.6 No.3,
August
31,
2016
ABSTRACT: Radiation induced grafting of various polymers with different monomers proved to be an attractive
means to modify the physical or chemical properties of polymeric materials or textile fabrics.
In the present work, radiation induced grafting of viscose rayon fabrics, consisting mainly of cellulose
fibers, with acrylic acid monomer has been carried out. The grafting yields have been thoroughly
studied as a function of different applied experimental parameters. The impact of the
graft yield on the physical properties of the fabrics such as tensile strength, elongation, swelling,
moisture absorption, crease recovery angle and also the dyeing properties of the fabrics has been
studied. The effect of increasing the contact time of the fabric and monomer solution, at room
temperature, after stopping irradiation has been studied in detail as well as the effect of temperature
on the irradiated samples also after stopping irradiation. The best grafting yield was obtained
on irradiating viscose rayon fabric in methanol-water solvent containing acrylic acid monomer, at
a dose 20 kGys, then heating for 7 hours at 80℃ and finally keeping the samples at room temperature
for about 20 hours. That treatment significantly increased the final graft yield.