Macroradical initiated polymerisation of acrylic and methacrylic monomers

Abstract

An approach has been developed for the grafting of monomers onto poly(trimethylolpropane trimethacrylate) (polyTRIM) particles using 2,2-diethyl dithiocarbamic acid benzyl ester (DDCABE) as an initiator. A set of polymers was prepared with this technique over different lengths of time and the kinetics of the reaction studied experimentally. It was found that the grafting of initiator to the polymeric support followed a second order reaction, while the subsequent addition of monomers from solution into the polyTRIM macroradicals followed a first order reaction. The living nature of the iniferter modified macroradicals permits easy consecutive grafting of multiple polymeric layers, allowing straightforward functionalisation of particles. However, the effectiveness of the grafted initiator decreased with each cycle of polymerisation. This technique can be used for a wide range of applications in analytical and biochemistry.

Computational Design and Preparation of MIPs for Atrazine Recognition on a Conjugated Polymer-Coated Microtiter Plate

“…The double bond gives a convenient attachment point for vinyl polymerization and has proved useful in the preparation of electrochemical sensors ,, and for grafting to other surfaces such as polystyrene . A convenient way of activating the poly(NPEDMA) surface to enable grafting is by UV irradiation in the presence of a photoiniferter such as a dialkyldithiocarbamate ester. , This results in a low degree of polymerization at the surface due to the limited mobility of the methacrylamide groups. The “living” nature of iniferter-initiated polymerization means that the polymerization of a grafted layer is readily achieved from the polyaniline-macroiniferter.…”

Strategies for Molecular Imprinting and the Evolution of MIP Nanoparticles as Plastic Antibodies—Synthesis and Applications

“…The first one is the formation of solid nanocore (seed particle) while the second stage is the grafting of the imprinted shell [107]. The solid core can be formed from diverse materials containing additional functionalities suitable for anchoring e.g., catalytic groups capable of initiating polymer grafting [108,109]. This approach allows formation of recognition sites at the surface of MIP beads [107,110] improving analyte transfer [111,112].…”

Localized surface plasmon resonance nanochips with molecularly imprinted polymer coating for explosives sensing

“…These materials are very robust and can be exploited at extreme environmental and storage conditions. MIPs have a good binding affinity to relevant forensic and environmental targets, which is typically expressed in subnanomolar dissociation constants [20]. Integration of LSPR and MIP methods looks promising for obtaining stable and sensitive sensor elements with good selectivity [21][22][23][24][25].…”