caa a22 4500 445328266 CHVBK 20180317142728.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10953-011-9755-6 doi (NATIONALLICENCE)springer-10.1007/s10953-011-9755-6 Association in Unsalted and Brine Solutions of a Water-Soluble Terpolymer with p -Vinylbenzyl-Terminated Octylphenoxy Poly(ethylene oxide) [Elektronische Daten] [Chuanrong Zhong, Liufeng Jiang, Shigao Wang] An associating terpolymer (PAOE) of acrylamide (AM), sodium 2-acrylamido-2-methylpropane sulphonate (NaAMPS), and a novel macromonomer: p-vinylbenzyl-terminated octylphenoxy poly(ethylene oxide) (VOE, degree of polymerization: 4) was synthesized by aqueous free-radical copolymerization. The PAOE polymer exhibited excellent thickening properties in unsalted and brine solutions. The electrostatic shielding of repulsive interactions of the polymer was much weaker than that of the linear associating polymers with small hydrophobic monomers. This brine solution exhibited unexpected salt-thickening behaviors twice, and good resistance to salt and ageing. The intermolecular hydrophobic association in unsalted and brine PAOE solutions, as functions of polymer and NaCl concentration, were characterized by fluorescence spectroscopy. With the addition of NaCl, the polymer chains were comparatively extended and continuous network structures were formed via the intermolecular hydrophobic association in brine solutions as well as in unsalted solutions at 0.15-0.25g⋅dL−1 PAOE, as observed by a scanning electron microscope (SEM). Springer Science+Business Media, LLC, 2011 Association nationallicence Fluorescence nationallicence Macromonomer nationallicence Microstructure nationallicence Scanning electron microscope (SEM) nationallicence Hydrophobic association nationallicence Polymer network nationallicence Zhong Chuanrong Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, 610059, Chengdu, Sichuan, China aut Jiang Liufeng Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, 610059, Chengdu, Sichuan, China aut Wang Shigao Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, 610059, Chengdu, Sichuan, China aut Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/10(2011-10-01), 1735-1754 0095-9782 40:10<1735 2011 40 10953 https://doi.org/10.1007/s10953-011-9755-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10953-011-9755-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhong Chuanrong Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, 610059, Chengdu, Sichuan, China aut NATIONALLICENCE 700 1- Jiang Liufeng Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, 610059, Chengdu, Sichuan, China aut NATIONALLICENCE 700 1- Wang Shigao Sate Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, 610059, Chengdu, Sichuan, China aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/10(2011-10-01), 1735-1754 0095-9782 40:10<1735 2011 40 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer