Influence of Cyclodextrin and Temperature on the Kinetics of Free Radical Polymerization of <i>N</i>‐Adamantylacrylamide in Water

Abstract

Abstract N ‐Adamantylacrylamide ( 3 ) was complexed with randomly methylated β ‐cyclodextrin (RAMEB) forming the water‐soluble host–guest monomer‐complex 3a . A 1:1 complex stoichiometry was proven by NMR titration (Job's method). We investigated the free radical polymerization of the complex 3a using the water‐soluble azoinitiator 2,2′‐azobis[2‐(2‐imidazolin‐2‐yl)‐propane]dihydrochloride (VA044) at different temperatures. We observed that, below T crit a solution polymerization of 3a takes place. Above T crit , a precipitation mechanism leads to an increase in the relative polymerization rate. magnified image