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Kinetic Investigations on the Polymerization of 2‐Oxazolines Using Pluritriflate Initators
Author(s) -
Luxenhofer Robert,
Bezen Manuela,
Jordan Rainer
Publication year - 2008
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200800293
Subject(s) - polymerization , reactivity (psychology) , oxazoline , polymer chemistry , polymer , kinetic energy , materials science , polymer science , chemistry , chemical engineering , organic chemistry , catalysis , physics , medicine , alternative medicine , pathology , quantum mechanics , engineering
In our ongoing efforts to develop poly(2‐oxazoline)s (POx) for biomedical applications, we report on the preparation of defined, star‐like hydrophilic POx. Using pluritriflate initiators, we show, through online kinetic measurements by gas chromatography, that multiple initiating groups are of equal reactivity for the initiation of the polymerization of 2‐oxazolines. The overall polymerization rate increases linearly with the number of initiator functions per molecule. Thus, all initiating moieties are of the same reactivity and all arms grow at the same rate. This is crucial for the establishment of a meaningful structure‐property relationship for polymers of star architectures.