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optimization of monomer of salt-tolerance and temperature-tolerance. with n, n dmaa, amps, acrylic acid as monomer, it uses the water solution free radical polymerization, then cross linking with crosslinker. with a strong anionic and hydrophilic functional sulfonic acid of amps, stp- has good salt resistance
. the molecular chain of stp- is carbon chain structure, it has high stability. because the big volume of amps's repeat unit, amps can effectively increase the steric hindrance, enhance the polymer molecular rigidity, so improved the copolymer molecular rigidity, and its temperature resistance, salt...
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