Synthesis and properties of acrylonitrile‐EPDM‐4‐chlorostyrene graft copolymer

Abstract

SYNOPSISGraft copolymerization of acrylonitrile (AN) and 4-chlorostyrene (4-Clst) onto ethylenepropylene-diene terpolymer ( EPDM ) was carried out using benzoyl peroxide as initiator.The effects of EPDM content, initiator concentration, solvent, mole ratio of 4-Clst to AN, reaction time, and reaction temperature on the graft copolymerization were examined. It was found that the light resistance, weatherability, and thermal stability of the acrylonitrile-EPDM-4-chlorostyrene graft copolymer were considerably better than those of acrylonitrilebutadiene-styrene copolymer. ma1 stability, and tensile properties of the graft copolymer were analyzed. EXPERIMENTAL MaterialsAcrylonitrile (Junsei Chemical) was purified by standard procedures. Benzoyl peroxide ( Hayashi Chemical) was recrystallized from methanol. Ethylene-propylene-diene terpolymer ( EPDM ) , having ethylidene norbornene as a termonomer ( Aldrich Chemical; ethylene/propylene = 50/50 by mol %, ML 50), was used as received. 4-Chlorostyrene (4-Clst) monomer was prepared by dehydration of 4-chlorophenylmethyl carbinol, as described previously." n-Hexane, dimetyl formamide (DMF) , acetone, toluene, cyclohexane, ethyl acetate, and tetrahydrofuran (THF) were distilled prior to use.

Synthesis and photodegradable properties of methyl vinyl ketone-EPDM-styrene graft terpolymer

“…The photodegradation was semiquantitatively exseveral IR characteristic peaks due to the vinyl, pressed in terms of color difference (DE) with Namethyl, carbonyl, and hydroxy groups at 910, tional Beaureau of Standards Unit, 9 as shown in 1375, 1725, and 3400 cm 01 , respectively. …”

“…[9][10][11][12][13][14][15][16][17] In this study, MVK-EPDM-St (MVES) graft terpolymer was synthesized from the reaction of methyl vinyl ketone (MVK) and The photodegradable polymers containing oxygen styrene (St) onto ethylene-propylene-diene termoiety, such as hydroperoxide, peroxide, and varipolymer (EPDM) under an argon atmosphere usous carbonyl groups, have been the main subject ing benzoyl peroxide as an initiator. The structure of numerous investigations.…”

Synthesis of high rubber styrene–EPDM–acrylonitrile graft copolymer and its toughening effect on SAN

“…To overcome these problems, the substitution of ethylene–propylene–diene terpolymer (EPDM) for butadiene‐based rubber has been widely investigated 1–4. The superior resistance of the EPDM component to heat, oxidation, ozone, and UV radiation endows high rubber styrene–EPDM–acrylonitrile graft copolymer (AES) with good weatherability 5…”

Synthesis and properties of styrene-EPDM-vinyl acetate graft polymer

“…We have also synthesized the high-performance graft polymers containing EPDM to improve demerits of ABS such as poor heat and light resistance. [2][3][4][5][6][7][8][9][10][11][12][13] In order to synthesize the impact-resistant thermoplastics containing polystyrene, poly-(methyl methacrylate), poly(vinyl acetate), etc., the free radical grafting polymerizations of the vinyl monomers onto polybutadiene, EPDM, etc., have been reported by many researchers. 14 -19 Polystyrene (PS) and poly(vinyl acetate) (PVAc) have been used on a large scale in plastic industry because PS has rigid, highly transparent, and good electrical insulation property, and PVAc has adhesive property and it is easy to form film.…”