Microstructure and association property of hydrophobically modified polyacrylamide of a new family

被引:49
作者
Gao, Baojiao [1 ]
Jiang, Liding [1 ]
Liu, Kangkai [1 ]
机构
[1] N Univ China, Dept Chem Engn, Taiyuan 030051, Peoples R China
关键词
chain structure; hydrophobic association; anionic surface-active monomers; acrylamide;
D O I
10.1016/j.eurpolymj.2007.03.049
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A new family of hydrophobically modified polyacrylamides was synthesized via copolymerization of acrylamide (AM) and anionic surface-active monomer of acrylamide-type, sodium 2-acrylamido-tetradecane sulfonate (NaAMC(14)S), in aqueous solution. In the copolymerization, by varying various factors, such as the feed ratio of NaAMC14S to AM and the amount of added electrolyte NaCl and initiator, we prepared copolymers NaAMC(14)S/AM with different block structures. The relationship between structures and hydrophobic association properties of copolymer chains was studied by using fluorescence probe and viscosimetry. Effects of the content and length of the hydrophobic blocks and the total molecular weight on hydrophobic association of the copolymers in pure water and in brine solution were examined, respectivelv. The results show that in pure water, hydrophobic association of the copolymers was enhanced as the content and length of the hydrophobic block increase. On the other hands, for a given content and length of the hydrophobic block, the hydrophobic association of the copolymers was enhanced as the total molecular weight increases. For all the copolymers studied, the apparent viscosity of their solutions in pure water has a limited value, but the apparent viscosities of the copolymer brine solutions are much higher than that of their corresponding water solutions, and show strong positive salinity sensitivity. Similarly, the hydrophobic association of the copolymer in brine solutions was enhanced as the content and length of the hydrophobic block increase. (C) 2007 Published by Elsevier Ltd.
引用
收藏
页码:4530 / 4540
页数:11
相关论文
共 27 条
[1]   New approach to the molecular characterization of hydrophobically modified polyacrylamide [J].
Blagodatskikh, IV ;
Vasil'eva, OV ;
Ivanova, EM ;
Bykov, SV ;
Churochkina, NA ;
Pryakhina, TA ;
Smirnov, VA ;
Philippova, OE ;
Khokhlov, AR .
POLYMER, 2004, 45 (17) :5897-5904
[2]   Hydrophobically-modified polyacrylamides prepared by micellar polymerization [J].
Candau, F ;
Selb, J .
ADVANCES IN COLLOID AND INTERFACE SCIENCE, 1999, 79 (2-3) :149-172
[3]   WATER-SOLUBLE COPOLYMERS .49. EFFECT OF THE DISTRIBUTION OF THE HYDROPHOBIC CATIONIC MONOMER - DIMETHYLDODECYL(2-ACRYLAMIDOETHYL)AMMONIUM BROMIDE ON THE SOLUTION BEHAVIOR OF ASSOCIATING ACRYLAMIDE COPOLYMERS [J].
CHANG, YH ;
MCCORMICK, CL .
MACROMOLECULES, 1993, 26 (22) :6121-6126
[4]   Hydrophobically associating polyacrylamides and their partially hydrolyzed derivatives prepared by post-modification.: 2.: Properties of non-hydrolyzed polymers in pure water and brine [J].
Feng, YJ ;
Billon, L ;
Grassl, B ;
Bastiat, G ;
Borisov, O ;
François, J .
POLYMER, 2005, 46 (22) :9283-9295
[5]   Studies on rheological behaviour of hydrophobically associating polyacrylamide with strong positive salinity sensitivity [J].
Gao, Baojiao ;
Jiang, Liding ;
Kong, Delun .
COLLOID AND POLYMER SCIENCE, 2007, 285 (08) :839-846
[6]   Studies on micellar behavior of anionic and surface-active monomers with acrylamide type in aqueous solutions [J].
Gao, Baojiao ;
Yu, Yaming ;
Jiang, Liding .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2007, 293 (1-3) :210-216
[7]   Polymer nanoparticles with activated ester surface by using functional surfmers [J].
Herold, M ;
Brunner, H ;
Tovar, GEM .
MACROMOLECULAR CHEMISTRY AND PHYSICS, 2003, 204 (5-6) :770-778
[8]   PROPERTIES OF HYDROPHOBICALLY ASSOCIATING POLYACRYLAMIDES - INFLUENCE OF THE METHOD OF SYNTHESIS [J].
HILL, A ;
CANDAU, F ;
SELB, J .
MACROMOLECULES, 1993, 26 (17) :4521-4532
[9]   Preparation of semiconductor nanoparticle-polymer composites by direct reverse micelle polymerization using polymerizable surfactants [J].
Hirai, T ;
Watanabe, T ;
Komasawa, I .
JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (38) :8962-8966
[10]   Fluorescence studies of associative behavior of cationic surfactant moieties covalently linked to poly(acrylamide) at the surfactant head or tail [J].
Morimoto, H ;
Hashidzume, A ;
Morishima, Y .
POLYMER, 2003, 44 (04) :943-952