6533b7d9fe1ef96bd126d5b7
RESEARCH PRODUCT
false
Klaus WeißkopfG. Meyerhoffsubject
Arrhenius equationchemistry.chemical_compoundsymbols.namesakeCondensation polymerOrder of reactionMonomerchemistryDimethyl sulfoxidePolymer chemistryPolyamidesymbolsReactivity (chemistry)Solubilitydescription
The kinetics of polyamidation was investigated for the reaction of diphenyl terephthalate as activated diester with trimethylhexamethylenediamine (1 : 1 mixture of 2,2,4- and 2,4,4-trimethyl isomers) in dimethyl sulfoxide. The good solubility of the resulting polyamide (Trogamid®(poly(iminoterephthaloylimino-x,y,z-trimethylhexamethylene))) assured a reaction in which all reactants, especially the polyamide, were soluble. The conversion was followed by analysis of the phenol set free and by measuring the number-average degree of polymerization Pn of the polyamide. The reaction obeyed an overall second order with the principle of equal reactivity of functional groups fulfilled for Pn ≿ 16. Deviations of this order of reaction were observed at the beginning of the reaction due to the enhanced reactivity of monomers and oligomers. The Arrhenius activation parameters were determined for the temperature range between 70 and 110°C.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1986-02-01 | Die Makromolekulare Chemie |