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Ftir and Resolved Esca Studies of Segmented Polyether Polyurethanes

Published online by Cambridge University Press:  22 February 2011

G. L. Grobe III ,
Joseph A. Gardella Jr. ,
Roland L. Chin  and
Lawrence Salvati
G. L. Grobe III
Affiliation:
Chemistry Department, State University of New York at Buffalo, Buffalo, NY 14214
Joseph A. Gardella Jr.
Affiliation:
Chemistry Department, State University of New York at Buffalo, Buffalo, NY 14214
Roland L. Chin
Affiliation:
Allied Chemical Corporation, Morristown, NY, 07960
Lawrence Salvati
Affiliation:
Perkin Elmer Corporation, Physical Electronics Division, Edison, NJ 08820
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Abstract

Surface analysis of biomedical materials is necessary for determination of surface structure/biological property relationships. Previous studies [3,6] have demonstrated the applicability of Angle Resolved X-Ray Photoelectron Spectroscopy (ARXPS or ARESCA) and Fourier Transform Infrared Spectroscopy (FT-IR) with Attenuated Total Reflectance (ATR) sampling. Using these surface sensitive techniques on currently marketed segmented polyurethanes (SPU) (Biomer TMand Cardiothane-51TM), we have investigated chemical and morpholgical differences between polymeric mixtures cast from solvents of varying polarity. These materials are used because of their resistance to degradation and hydrolysis.

Results will show: (1) Selective casting of different constituents of the mixture as monitored by FT-IR, where polymers can be represented as opposed to block copolymers; (2) Correlation between the Hildebrand solubility parameter of the casting solvent and the portion of the polymer selectively cast; (3) Models of solution cast polymers will be presented including (concentration gradient) of the constituents; (4) SEM micrographs will provide information on domain size and the formation of these solution cast films; (5) Depths and concentration gradients will be estimated by comparing results from AHXPS and variable angle FT-IR/ATR.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 55: Symposium G – Biomedical Materials , 1985 , 401
Copyright
Copyright © Materials Research Society 1986

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References

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