Journal
STARCH-STARKE
Volume 69, Issue 1-2, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/star.201500329
Keywords
-radiation; Dielectric spectroscopy; Mechanical properties; Regenerated cellulose; Secondary chain motion
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Funding
- Qatar University through the Center for Advanced Materials' Start-Up grant
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Regenerated cellulose films prepared using NaOH/urea solvent system were exposed to different doses of -radiation, ranging from 5 to 50kGy to modify their properties. Change in relative crystallinity as a function of absorbed dose was studied using XRD. The tensile and dynamic mechanical properties were tested and it was found that exposure to 10kGy imparted maximum improvement in these properties, that is 10% improvement in tensile strength, 43% increase in Young's modulus, and 22% increase in storage modulus. Broadband dielectric spectroscopy technique was used to investigate effect of absorbed dose on the secondary chain motions of the regenerated cellulose and the results were in line with findings of the tensile and dynamic mechanical tests.
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