β Scribed by R.S. Davidson; R.J. Ellis; S.A. Wilkinson; C.A. Summersgill
No coin nor oath required. For personal study only.
The formation of surface coatings by three difunctional acrylates and one trifunctional acrylate by polymerization induced by electron beam radiation is described. Physical testing (solvent resistance and pencil hardness test) indicates that the properties of the coatings change as they are exposed to increasing amounts of radiation. Fourier Transform Infra Red-Photoacoustic Spectroscopy was used to measure the extent of double bond consumption under irradiation; it was found that reactive double bonds were consumed at relatively low doses (< 10 kGy) indicating that film properties are extensively affected by radiation induced reactions in the polyacrylate. A new reactive diluent, dibutyltin diacrylate, was shown to cure extremely rapidly to give hard coatings.
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## Abstract The degradable polymers polylactide (PLA) and polylactideβ__co__βglycolide (PLGA) have found widespread use in modern medical practice. However, their slow degradation rates and tendency to lose strength before mass have caused problems. The aim of this study was to ascertain whether tr
A urethane diacrylate oligomer was used to develop 40 different formulations in combination with eight different reactive diluents in the presence of five different coadditives. Thin films were prepared with these formulated solutions under ionizing radiation using either electron beam (EB) or ultra