Premium
Uncrosslinked epoxide‐amine addition polymers, 45 . Linear addition polymerization of 2,2‐bis[4‐(2,3‐epoxypropoxy)‐phenyl]propane and arylamines in highly concentrated solutions
Author(s) -
Klee Joachim E.,
Grützner RolfEgbert,
Hörhold HansHeinrich,
Flammersheim HansJürgen
Publication year - 1998
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19980801)199:8<1603::aid-macp1603>3.0.co;2-3
Subject(s) - epoxide , propane , polymer chemistry , amine gas treating , polymerization , chemistry , polymer , linear polymer , addition polymer , organic chemistry , catalysis
In highly concentrated solutions (40 to 70 wt.‐%) such as in chlorobenzene (CB) or 2‐methoxyethanol (ME) the addition polymerization of 2,2‐bis[4‐(2,3‐epoxypropoxy)phenyl]propane (DGEBA) and disecondary diamines leads to high molecular weight linear addition polymers. The broad molecular weight distribution ( M w / M n = 4 to 17) is caused by the formation of cyclic oligomers. After precipitation in acetone, M w / M n values of 2.8 to 3.4 were obtained which indicate a regular linear step‐growth polymerization. Differential scanning calorimetry (DSC) investigations show that CB retards the addition polymerization, whereas ME exhibits an acceleration of the polymerization. The suggested kinetic model describes the reaction behavior over the whole range of polymerization by one parameter set only. In order to find the optimum parameters, the set of differential equations was solved numerically by multivariate non‐linear regression. An excellent agreement between calculated and experimental curves was found.