Grafting of Polystyrene onto Poly(butyl acrylate) and Polystyrene Backbones Using Functionalized Methacrylates

Abstract

Summary: Grafting of terminal epoxide‐functionalized polystyrene onto poly[styrene‐co‐(2‐hydroxyethyl methacrylate)] or poly[(butyl acrylate)‐co‐(2‐hydroxyethyl methacrylate)] backbones was carried out by coupling reactions catalyzed by boron trifluoride. The functionalized backbones were prepared by free radical copolymerization of 2‐hydroxyethyl methacrylate (HEMA) with styrene or butyl acrylate. For the synthesis of terminal functionalized polymer chains a side reaction of the TEMPO‐mediated free radical polymerization of methacrylates could be used successfully to convert TEMPO‐terminated polymers into terminal epoxide‐functionalized polymers by the use of glycidyl methacrylate. The number of epoxide units attached to the backbone was directly related to the TEMPO concentration during the disproportionation reaction. Taking P(S‐co‐HEMA) as well as P(BuA‐co‐HEMA) backbones in coupling reactions with different epoxy‐functionalized polystyrenes in the presence of boron trifluoride, graft polymers with up to 7 and 37 side chains per backbone were produced.Molecular weight distribution curves of a linking experiment between P(BuA‐co‐HEMA) backbones and epoxide‐functionalized polystyrene side chains.magnified imageMolecular weight distribution curves of a linking experiment between P(BuA‐co‐HEMA) backbones and epoxide‐functionalized polystyrene side chains.

Effect of ATH content on electrical and aging properties of EVA and silicone rubber blends for high voltage insulator compound

“…Graft polymers with novel chemical structure and molecular architecture have been highly desired for the advantage that they offer unique possibility of tailoring material properties through facile selection of the polymer backbone or the graft chain and endow the materials with fantabulous properties 1, 2. In general, three main strategies have been adopted to the preparation of graft polymers: “grafting through,”3, 4 “grafting from,”5–7 and “grafting onto.”8–10 The attractive feature of the “grafting onto” approach is that both the backbone and side chains are prepared independently, thus the structure and molecular length can be controlled and characterized precisely.…”

Amphiphilic PEG‐grafted poly(ester‐carbonate)s: Synthesis and diverse nanostructures in water

“…1,2 In general, three main strategies have been adopted to the preparation of graft polymers: ''grafting through,'' 3,4 ''grafting from,'' [5][6][7] and ''grafting onto.'' [8][9][10] The attractive feature of the ''grafting onto'' approach is that both the backbone and side chains are prepared independently, thus the structure and molecular length can be controlled and characterized precisely.…”

“…1,2 In general, three main strategies have been adopted to the preparation of graft polymers: ''grafting through,'' 3,4 ''grafting from,'' [5][6][7] and ''grafting onto.'' [8][9][10] The attractive feature of the ''grafting onto'' approach is that both the backbone and side chains are prepared independently, thus the structure and molecular length can be controlled and characterized precisely. Amphiphilic polymers have attracted considerable interests in past decades for their unique phase behavior in aqueous medium and potential applications as carriers for genes and hydrophobic drugs.…”