title: Characterization of extractable species from poly(etherurethane urea) (PEUU) elastomers.
abstract: Methanol extracts of four poly(etherurethane urea) (PEUU) materials were analyzed using Gel Permeation Chromatography (GPC). The additives in the materials were Santowhite powder at 1 wt% and Methacrol 2138 F at 5 wt% loading levels. One-to-two wt% of the original PEUU films was extractable with methanol. The extractables consisted of a low molecular weight (Mw) PEUU polymer, an MDI-rich oligomer, the additives Santowhite (SW) powder and Methacrol 2138 F, and aniline. The low Mw PEUU polymer had a Mw of 12,000 relative to polystyrene, and the MDI-rich oligomer had a Mw of 1000 relative to polystyrene. Quantitation of all extracted species was achieved using GPC; the use of dual-detectors on the GPC made it possible to determine the soft-to-hard composition of the PEUU extracts as a function of molecular weight.
authors.affiliation: Department of Macromolecular Science, Case Western Reserve University, Cleveland, OH 44106.
authors.forename: M
authors.initials: M
authors.lastname: Renier
authors.forename: Y K
authors.initials: YK
authors.lastname: Wu
authors.forename: J M
authors.initials: JM
authors.lastname: Anderson
authors.forename: A
authors.initials: A
authors.lastname: Hiltner
authors.forename: G A
authors.initials: GA
authors.lastname: Lodoen
authors.forename: C R
authors.initials: CR
authors.lastname: Payet
mesh_terms: D000588:Amines / Q000737:chemistry; D001672:Biocompatible Materials / Q000737:chemistry*; D002084:Butylated Hydroxytoluene / Q000031:analogs & derivatives / Q000737:chemistry; D002850:Chromatography, Gel; D006838:Hydrocarbons / Q000737:chemistry; D000432:Methanol; D008970:Molecular Weight; D011137:Polystyrenes / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry*; D012995:Solubility
chemical_list: D000588:Amines; D001672:Biocompatible Materials; D006838:Hydrocarbons; D011137:Polystyrenes; D011140:Polyurethanes; C070408:Methacrol 2138F; D002084:Butylated Hydroxytoluene; C030594:Santowhite powder; C044690:polyetherurethane urea; D000432:Methanol