Preparation of poly(N‐ethyl methacrylamide) particles via an emulsion/precipitation process: The role of the crosslinker

Abstract

Monodisperse, thermosensitive poly(N-ethyl methacrylamide) microgel particles were prepared by the batch precipitation/emulsion polymerization of watersoluble N-ethyl methacrylamide and the hydrophobic crosslinker ethylene glycol dimethacrylate initiated by potassium persulfate. Particular attention was paid to the effect of the crosslinker agent on the polymerization process (kinetics, conversion, and water-soluble oligomer content). Particles were characterized in terms of their size distribution and swelling capacity. A polymerization mechanism for the water-soluble monomer and non-water-soluble crosslinker is proposed and discussed on the basis of a combination of both emulsion and precipitation polymerization processes.

Novel antifouling oligo(ethylene glycol) methacrylate particles via surfactant-free emulsion polymerization

“…This result stems out from the fact that high cross-linker contents are used in our recipes (10%, v/v for P10). A relatively denser nuclei surrounded by the PEG rich corona should be responsible for such an image and parallel results were reported in the literature [30]. Fig.…”

Microgels by Precipitation Polymerization: Synthesis, Characterization, and Functionalization

“…The formed polymers are transformed into a collapsed state because the reaction temperature is far above VPTT (for example in the case of PNIPAAm) and become crosslinked by crosslinker molecules to form a colloidal polymer network or microgel. This technique has been widely used for the synthesis of thermosensitive PNIPAAm [30][31][32][33][34][35] and poly(N-vinylcaprolactam) (PVCL) [36] microgels.…”

Synthesis and characterization of Polymethacrylamide–Clay nanocomposites

“…Apart from PMAm, some of its derivatives have also been reported. [7][8][9][10][11][12][13][14][15][16] Ultrasound (US) is one of the nondestructive methods used for different purposes in chemistry, [17][18][19][20][21][22][23][24] particularly in the field of polymer chemistry. 22,24 US is useful to human beings in many ways.…”