Homogeneous Photoinouced Graft Copolymerization of Acrylamide onto Abs Copolymers in the Presence of 4-Acetyldiphenyl as Photosensitizer.: 1. Influence of Butadiene Content in Abs Copolymers

Abstract

Photoinduced graft copolymerization of acrylamide (AM) onto two types of acrylonitrile-butadiene-styrene (ABS) copolymers was extensively investigated in homogeneous media. The grafting process was conducted in chloroform in presence of 4-acetyldiphenyl(4-AD). Ultraviolet (UV) irradiation was used in the range of 310 to 460 nm. The UV spectrum of 4-AD has X , , , at 285 nm and shows n -T* transitions. The grafting parameters, such as weight conversion, grafting percentage, and grafting efficiency, were determined as a function of the irradiation time and the concentrations of monomer, initiator, and substrate. A reverse effect

Modification of acrylonitrile–butadiene–styrene terpolymer by grafting with maleic anhydride in the melt. I. Preparation and characterization

“…Functionalized polymers are used as compatibilizers in the reactive compatibilization of polymer blends3 and can be obtained by the graft copolymerization of functional monomers with existing polymers. Graft polymerization can be initiated by various methods, such as high energy (γ rays and electron beams),4, 5 plasma treatment,6 ultraviolet,7, 8 chemical initiators (including graft polymerization in solution and in melt), and polymer oxidation. Methacrylic acid,9 styrene,10–13 acrylic acid,14 benzyl acrylate,15 maleic anhydride (MAH),16 glycidyl methacrylate, acryl amide,17 oxazoline,2, 18 and long‐chain unsaturated monomers19, 20 are among the monomers most commonly grafted onto polymers containing butadiene.…”

“…Methacrylic acid,9 styrene,10–13 acrylic acid,14 benzyl acrylate,15 maleic anhydride (MAH),16 glycidyl methacrylate, acryl amide,17 oxazoline,2, 18 and long‐chain unsaturated monomers19, 20 are among the monomers most commonly grafted onto polymers containing butadiene. Several articles7, 8, 14, 16, 17, 19, 20 have recently appeared on the subject of the grafting of vinyl monomers onto acrylonitrile–butadiene–styrene terpolymer (ABS). In comparison with solution grafting, melt grafting is more convenient and effective for industry, but the grafting degree (GD) obtained by this method is usually low.…”

Preparation of N-66/g-ABS Blends by Chemically Grafting Long Chain Compounds on the Butadiene Region of ABS, using a Novel UV Irradiation Technique

“…It is widely used nowadays in mobile industry and consumer products. Several reports have recently appeared on the subject of grafting of vinyl monomers onto ABS with various methods [1,2]. Nylons are attractive for this application because they have reactive functionality through amine and carboxyl end groups capable of reacting to form graft moieties [3][4][5][6][7][8][9][10][11].…”

Grafting of long‐chain unsaturated carboxylic acids onto acrylonitrile–butadiene–styrene terpolymer

“…Several reports have recently appeared on the subject of the grafting of vinyl monomers onto ABS with various methods. Abdel-Razik et al 1,2 investigated the photoinduced graft copolymerization of acrylamide onto ABS in chloroform in the presence of benzophenone or 4-acetyldiphenyl. Irradiation of benzophenone or 4-acetyldiphenyl produces a radical that abstracts an allylic hydrogen and/or adds to the double bond of the butadiene portion of the polymer to generate the radical site for grafting.…”