Low Dosage Gamma Irradiation of Poly(glycerol sebacate)-co-lactic Acid Utilizing Methyl Methacrylate Crosslinker

Eduardo R. Magdaluyo; Jerilene L. Medrano

doi:10.4028/www.scientific.net/AMM.799-800.110

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 799-800Low Dosage Gamma Irradiation of Poly(glycerol...

Low Dosage Gamma Irradiation of Poly(glycerol sebacate)-co-lactic Acid Utilizing Methyl Methacrylate Crosslinker

Abstract:

The use of low dosage gamma radiation and crosslinker was explored to reduce time and energy requirements for the crosslinking of the biomedical polymer poly(glycerol sebacate)-co-lactic acid (PGS-co-LA) and to determine the effect of these parameters on the polymer’s properties. Curing time was effectively reduced to less than 2 hours from the typical 48 hours required by thermal curing. Analysis using infrared spectroscopy identifies the bonds forming PGS-co-LA and confirms the formation in all low radiation dosage settings and crosslinker amounts. Increasing the amount of crosslinker did not change the polymer’s thermal properties significantly whereas increasing the radiation dosage from 5 kGy to 10 kGy resulted to more negative value of melting temperature and increase in heat of fusion. The sample with the highest amount of crosslinker irradiated at the lowest level of radiation dosage has the least negative melting temperature and lowest heat of fusion

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Periodical:

Applied Mechanics and Materials (Volumes 799-800)

Pages:

110-114

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.799-800.110

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Online since:

October 2015

Authors:

Eduardo R. Magdaluyo*, Jerilene L. Medrano

Keywords:

Crosslinker, Low Dosage Irradiation, Poly(Glycerol Sebacate)-co-Lactic Acid

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