title: Simple computer controlled goniophotometer for the measurement of early stage changes in biodegradable polymers.
abstract: Biodegradable polymers exhibit major surface changes that cannot be measured by gravimetric methods. This paper describes a simple, inexpensive system that can accurately record these surface changes. It is based on a laser light source and a scanning photodiode controlled by microcomputer.
authors.affiliation: Biomedical Engineering Unit, Medical Institute, Hartshill, Stoke on Trent, UK.
authors.forename: J C
authors.initials: JC
authors.lastname: Knowles
authors.forename: G W
authors.initials: GW
authors.lastname: Hastings
mesh_terms: D001673:Biodegradation, Environmental; D004867:Equipment Design; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing / Q000295:instrumentation*; D008838:Microcomputers; D008855:Microscopy, Electron, Scanning; D010783:Photometry / Q000295:instrumentation*; D011108:Polymers / Q000032:analysis*
chemical_list: D011108:Polymers