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Synthesis and flocculation properties of poly(diallyldimethyl ammonium chloride–vinyl trimethoxysilane) and poly(diallyldimethyl ammonium chloride–acrylamide–vinyl trimethoxysilane)
Author(s) -
Zhao HuaZhang,
Luan ZhaoKun,
Gao BaoYu,
Yue QinYan
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10339
Subject(s) - ammonium persulfate , flocculation , ammonium chloride , vinyl chloride , chemistry , acrylamide , turbidity , polymer chemistry , ammonium , nuclear chemistry , polymerization , polymer , organic chemistry , copolymer , oceanography , geology
Poly(diallyldimethyl ammonium chloride–vinyl trimethoxysilane) [P(DADMAC–VTMS)] and poly(diallyldimethyl ammonium chloride–acrylamide–vinyl trimethoxysilane) [P(DADMAC–AM–VTMS)], the latter a new cationically charged and hydrophobically modified flocculant, were obtained by radical polymerization initiated by potassium persulfate. The effects of the vinyl trimethoxysilane (VTMS) feed ratio on the intrinsic viscosity and solubility of the polymers were examined. The effects of the flocculants on turbidity removal, decolorization, and oil removal in water treatment were also studied. The introduction of VTMS increased the intrinsic viscosities of P(DADMAC–VTMS) and P(DADMAC–AM–VTMS) in comparison with the viscosities of poly(diallyldimethyl ammonium chloride) and poly(diallyldimethyl ammonium chloride–acrylamide), respectively, but reduced their solubilities. The introduction of VTMS also enhanced the flocculation properties of P(DADMAC–VTMS) and P(DADMAC–AM–VTMS), including turbidity removal, decolorization, and oil removal. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 335–342, 2002; DOI 10.1002/app.10339