Structural parameters of the network formed first in in‐situ sequential interpenetrating polymer networks | Zendy

Tabka M. T. | Zendy; Widmaier J. M. | Zendy; Meyer G. C. | Zendy

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Structural parameters of the network formed first in in‐situ sequential interpenetrating polymer networks

Author(s) -

Tabka M. T.,

Widmaier J. M.,

Meyer G. C.

Publication year - 1989

Publication title -

makromolekulare chemie. macromolecular symposia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.257

H-Index - 76

eISSN - 1521-3900

pISSN - 0258-0322

DOI - 10.1002/masy.19890300105

Subject(s) - polyurethane , swelling , polymer , materials science , solvent , interpenetrating polymer network , methyl methacrylate , polymer chemistry , in situ , polymer network , chemical engineering , composite material , chemistry , organic chemistry , polymerization , engineering

As part of a study concerning poly(propylene glycol)‐based polyurethane / poly(methyl methacrylate) interpenetrating polymer networks, polyurethane networks were synthesized at various dilutions of the reaction medium and at different values of the [NCO]/[OH] ratio. The network defects arising in such materials were evaluated by three independent experimental approaches: solvent extraction, swelling behaviour, and compression measurements. It was found that the networks with the least defects are formed at high precursor concentration, with a [NCO] over [OH] excess of about 7%.

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