AUTHOR=Mollah M. Z. I. , Rahaman M S. , Faruque M R I. , Khandaker M U. , Osman Hamid , Alamri Sultan , Al-Assaf Saphwan 

TITLE=Effects of Radiation sterilization Dose on the Molecular Weight and Gelling Properties of Commercial Alginate Samples

JOURNAL=Frontiers in Materials

VOLUME=Volume 8 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2021.761995

DOI=10.3389/fmats.2021.761995

ISSN=2296-8016

ABSTRACT=A total 26 alginate samples; control (13) and 15 kGy γ-irradiated (13) were characterized by viscometric and GPC-MALLS methods for the molecular weight (Mw). Remarkable decreasing changes in intrinsic viscosity for all samples of alginates were observed by the effect of radiation with a linear relationship between viscosity and concentration in 0.01 M NaCl solution. The results of molecular weight (Mw), % mass recovery, radii of gyration (Rz/Rg), % reduction of molecular weight assessed by gel permeation chromatography (GPC) and found significant correlation. The molecular weight decreased dramatically by the effect of radiation with momentous relation to the % reduction of the molecular weight. The highest molecular weight reduction (84%), which is the most sensitive to γ-radiation, average reduction rate was ≥50%. Thus, the samples were to be sensitive by 15 kGy radiation for Mw distribution.