ISSN:
0021-8995
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Maschinenbau
,
Physik
Notizen:
An interesting series of high molecular weight thermoplastic polymers, based on dihydric phenols and epichlorohydrin, have been prepared. The polymers have, in common, a structure which can be represented by the general repeating unit where E is a radical residuum from a dihydric phenol. Certain properties appear characteristic of this class of polymers. All contain some chain branching through the secondary hydroxyl group. They are amorphous, noncrystallizable, transparent, tough, and thermally stable. They show two glassy state transitions, a minor transition at about -70°C. and a major transition at a considerably higher temperature. This family of polymers provides an excellent means for studying structure-property correlations. Data are reported showing the effect of the structure of the dihydric phenol moiety (E) on the major glass transition temperature and on certain barrier properties of a series of these polymers. The polymer prepared from 2,2-bis(4-hydroxyphenyl) propane, bisphenol A, is considered typical of this series; its mechanical and physical properties are described in somewhat more detail and compared with properties of certain commercial polymers.
Zusätzliches Material:
1 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/app.1963.070070613
Permalink
