01726nas a2200217   4500008004100000022001400041245009100055210006900146260007500215300001200290490000700302520092900309653001901238653003401257653002001291653001601311653001801327100002601345700001801371856011901389       2010                        eng d  a1566-254300aEffect of gamma-dose rate on biodegradation of gamma-sterilized biomedical polyolefins0 aEffect of gammadose rate on biodegradation of gammasterilized bi  a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGER/PLENUM PUBLISHERScDEC  a600-6070 v183 a<p>The aim of the present study is to study the effect of gamma-dose rate on the biodegradation of gamma-sterilized polyolefins. Films of isotactic polypropylene, high density polyethylene and ethylene-propylene (EP) copolymer were sterilized under gamma-radiation with doses of 10 and 25 kGy. Two different (60)Co sources were used with dose rate 600 and 780 Gy h(-1). Neat and sterilized samples were incubated in compost and fungal culture environments. The changes in functional groups, surface morphology and intrinsic viscosity in polymer chains were characterized by FT-IR spectroscopy, SEM and viscometric measurements, respectively. It was observed that both gamma-degradation and biodegradation processes depend on the dose rate of gamma-source. It was found that the biodegradation of gamma-sterilized polyolefins in composting and microbial culture environments increased with decreasing the gamma-dose rate.</p>10aBiodegradation10aComposting and fungal culture10agamma-Dose rate10aPolyolefins10aSterilization1 aAlariqi, Sameh, A. S.1 aSingh, R., P.  uhttps://library.ncl.res.in/content/effect-gamma-dose-rate-biodegradation-gamma-sterilized-biomedical-polyolefins-0