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Properties of polyformals of alicyclic diols
Author(s) -
Jackson W. J.,
Caldwell J. R.
Publication year - 1963
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1963.070070602
Subject(s) - alicyclic compound , materials science , melting point , polymer , casting , hydrolysis , glass transition , softening point , chloroform , melt spinning , phase (matter) , polymer chemistry , thermotropic crystal , chemical engineering , polymer science , spinning , organic chemistry , composite material , liquid crystalline , chemistry , engineering
The properties of the polyformals of several alicyclic diols were determined. Particularly unusual were the properties of the polyformal of 2,2,4,4‐tetramethyl‐1,3‐cyclobutanediol. The polymer of the 1 : 1 cis/trans diol mixture had a reversible transition in crystalline phase at about 177°C. and a crystalline melting point of 262°C. The polymer was soluble in chloroform and in hot toluene. It was resistant to hydrolysis, particularly alkaline hydrolysis. Physical properties were determined on molded specimens obtained by injection‐molding, on films obtained by casting and pressing, and on fibers obtained by melt‐spinning.