title: Examination of hard segment and soft segment phase separation in polyurethane medical materials by electron microscopy techniques.
abstract: A combination of transmission electron microscopy (TEM) and in situ tensile testing in an environmental scanning electron microscopy (ESEM) was used to evaluate the static bulk and dynamic surface morphologies of medical polyurethanes. TEM results showed phase-separated hard segment and soft segment structures. Surface morphology as a function of strain was studied using ESEM in conjunction with a tensometer.
authors.affiliation: Department of Materials Science, University of Cambridge, Cambridge CB2 3QZ, UK.
authors.forename: Jennifer E
authors.initials: JE
authors.lastname: Taylor
authors.forename: Peter R
authors.initials: PR
authors.lastname: Laity
authors.forename: Steven S
authors.initials: SS
authors.lastname: Wong
authors.forename: Keith
authors.initials: K
authors.lastname: Norris
authors.forename: Peck
authors.initials: P
authors.lastname: Khunkamchoo
authors.forename: Martin
authors.initials: M
authors.lastname: Cable
authors.forename: Geoffrey
authors.initials: G
authors.lastname: Andrews
authors.forename: Anthony F
authors.initials: AF
authors.lastname: Johnson
authors.forename: Ruth E
authors.initials: RE
authors.lastname: Cameron
mesh_terms: D001672:Biocompatible Materials; D001698:Biomedical Engineering / Q000379:methods; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D011140:Polyurethanes / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D001672:Biocompatible Materials; D011140:Polyurethanes