Isodisperse Telechelic Polymers and their Polyurethane Derivatives Sample Preparation
Abstract
This report describes the preparation of six hydroxy-terminated polybutadiene (HTPBD) samples and their hydrogenated (polyethylene) derivatives (HTPE). The polybutadiene samples, with nominal average molecular weights Mn of 1000, 1500, 2000, 3000, 5000, and 10000, have been prepared using the so-called "isodisperse telechelic polymerization" method under non-isothermal conditions. The HTPBD samples produced were characterized by gel permeation chromatography, FT-IR and 1H-NMR and showed a narrow polydispersity approaching the theoretical limit. From the HTPBD samples isodisperse HTPE samples were prepared by hydrogenation under heterogeneous conditions, using a freshly prepared 30% palladium/charcoal catalyst. Between July 1995 and May 1997, 100-g batches of the twelve samples thus prepared were sent to the U.S. army research laboratory for further experiments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 16, 1998
- Accession Number
- ADA348675
Entities
People
- Ferenc Tuedoes
- Helga Tuedoes
- Tamara Foeldes-berezsnich
Organizations
- Hungarian Academy of Sciences