TY - JOUR
T1 - Aminomethylene phosphonic acid-ceric ion redox systems for aqueous polymerization of vinyl monomers
AU - Öz, Nesrin
AU - Akar, Ahmet
PY - 2000/1
Y1 - 2000/1
N2 - Aminomethylene phosphonic acids, such as amino tri(methylene phosphonic acid) (ATMP), 1-hydroxy-ethylidene-1,1-diphosphonic acid (HEDP), diethylene triamine penta(methylene phosphonic acid) (DTPMPA), N,N-di(methylene phosphonic acid) ethanol amine (DMPEA), N,N-di(methylene phosphonic acid)-N-methylamine (DMPAMA), N-oxo-N,N,N-tri(methylene phosphonic acid) (OTMPA), and ceric ammonium nitrate redox systems are used for the polymerizations of acrylonitrile, vinyl acetate, acrylic acid and acrylamide. The effects of concentration of ceric ion and aminomethylene phosphonic acid on the yield and molecular weight show that oxidative termination reaction becomes important at higher ceric concentration and considerable chain-transfer reaction occurs at higher ATMP concentration. The redox reaction in the complex of ceric ion and ATMP forms a primary radical on an ATMP molecule, which in turn initiates polymerization to give polymer containing amino tri(methylene phosphonic acid) chain end.
AB - Aminomethylene phosphonic acids, such as amino tri(methylene phosphonic acid) (ATMP), 1-hydroxy-ethylidene-1,1-diphosphonic acid (HEDP), diethylene triamine penta(methylene phosphonic acid) (DTPMPA), N,N-di(methylene phosphonic acid) ethanol amine (DMPEA), N,N-di(methylene phosphonic acid)-N-methylamine (DMPAMA), N-oxo-N,N,N-tri(methylene phosphonic acid) (OTMPA), and ceric ammonium nitrate redox systems are used for the polymerizations of acrylonitrile, vinyl acetate, acrylic acid and acrylamide. The effects of concentration of ceric ion and aminomethylene phosphonic acid on the yield and molecular weight show that oxidative termination reaction becomes important at higher ceric concentration and considerable chain-transfer reaction occurs at higher ATMP concentration. The redox reaction in the complex of ceric ion and ATMP forms a primary radical on an ATMP molecule, which in turn initiates polymerization to give polymer containing amino tri(methylene phosphonic acid) chain end.
UR - http://www.scopus.com/inward/record.url?scp=0343391058&partnerID=8YFLogxK
U2 - 10.1016/S0014-3057(99)00034-8
DO - 10.1016/S0014-3057(99)00034-8
M3 - Article
AN - SCOPUS:0343391058
SN - 0014-3057
VL - 36
SP - 193
EP - 199
JO - European Polymer Journal
JF - European Polymer Journal
IS - 1
ER -