Composite Materials with Improved Properties in Compression. Appendix 1. Cyclopropanation of Poly(1-Methyl-1-phenyl-1-sila-cis-pent-3-ene). Synthesis and Characterization of Poly(1-Methyl-3,4-methylene-1-phenyl-1-sila-cis-pent-3-ene)
Abstract
There is considerable interest in the chemical modification of polymers. While it has been possible to stereo specifically quantitatively add dichlorocarbene to the C-C double bonds of 1,4-polybutadiene as well as to those of poly(1,1-dimethyl-1-sila-cis-pent-3-ene) (II), it has not been possible to achieve complete cyclopropanation of the C-C double bonds of either 1,4- polybutadiene or II by use of the Simmons-Smith reaction. NMR spectra were obtained either on a Brucker AM-360 or an IBM Brucker WP-270-SY spectrometer operating in the Fourier transform mode. Five to ten percent weight/volume solutions of polymers C12C-I and H2C-I in chloroform-d were used to obtain NMR spectra, whereas ten to fifteen percent solutions were utilized for 13C and 29Si NMR spectra. BC NMR spectra were run with broad band proton decoupling. Chloroform was used as an internal standard for 1H and 13C NMR spectra. Composite materials.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 09, 1990
- Accession Number
- ADA221494
Entities
People
- Howard S. Lee
- William P. Weber
- Xiugao Liao
Organizations
- University of Southern California