Scholars@Duke publication: Structural Analysis of Biomer by Pyrolysis Mass Spectrometry and Thermogravimetry

Structural Analysis of Biomer by Pyrolysis Mass Spectrometry and Thermogravimetry

Publication , Journal Article

Richards, JM; McClennen, WH; Meuzelaar, HLC; Gregonis, DE; Reichert, WM; Helle, MA

Published in: Macromolecules

January 1, 1985

Curie-point pyrolysis mass spectrometry (Py-MS) was used to identify the polymeric components of the poly(ether urethane urea) Biomer, which is widely used in the construction of artificial heart chambers. A comparative study between Biomer and model polymers showed Biomer to be composed of poly(tetramethylene glycol) (PTMG) capped with 4,4'-methylenebis(phenyl isocyanate) (MDI) and chain-extended with ethylenediamine (EDA). As determined from thermogravimetry (TG) and 1H NMR data the PTMG molecular weight appears to be approximately 1000 and the PTMG:MDI molar ratio 2:3. An overall pyrolysis mechanism is proposed which postulates initial scission of urea links followed by cleavage of the urethane bonds and subsequent decomposition of the polyether chains. © 1985, American Chemical Society. All rights reserved.

Duke Scholars

Author William M. Reichert Biomedical Engineering

Published In

Macromolecules

DOI

10.1021/ma00145a032

EISSN

1520-5835

ISSN

0024-9297

Publication Date

January 1, 1985

Volume

Issue

Start / End Page

496 / 500

Related Subject Headings

Polymers
09 Engineering
03 Chemical Sciences

Citation

APA

Chicago

ICMJE

MLA

NLM

Richards, J. M., McClennen, W. H., Meuzelaar, H. L. C., Gregonis, D. E., Reichert, W. M., & Helle, M. A. (1985). Structural Analysis of Biomer by Pyrolysis Mass Spectrometry and Thermogravimetry. Macromolecules, 18(3), 496–500. https://doi.org/10.1021/ma00145a032

Richards, J. M., W. H. McClennen, H. L. C. Meuzelaar, D. E. Gregonis, W. M. Reichert, and M. A. Helle. “Structural Analysis of Biomer by Pyrolysis Mass Spectrometry and Thermogravimetry.” Macromolecules 18, no. 3 (January 1, 1985): 496–500. https://doi.org/10.1021/ma00145a032.

Richards JM, McClennen WH, Meuzelaar HLC, Gregonis DE, Reichert WM, Helle MA. Structural Analysis of Biomer by Pyrolysis Mass Spectrometry and Thermogravimetry. Macromolecules. 1985 Jan 1;18(3):496–500.

Richards, J. M., et al. “Structural Analysis of Biomer by Pyrolysis Mass Spectrometry and Thermogravimetry.” Macromolecules, vol. 18, no. 3, Jan. 1985, pp. 496–500. Scopus, doi:10.1021/ma00145a032.

Published In

Macromolecules

DOI

10.1021/ma00145a032

EISSN

1520-5835

ISSN

0024-9297

Publication Date

January 1, 1985

Volume

Issue

Start / End Page

496 / 500

Related Subject Headings

Polymers
09 Engineering
03 Chemical Sciences