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We have studied the chain conformation and adsorption behavior of a double thermo-sensitive and narrow dispersed PNIPAm110-PEO100-PPO65-PEO100-PNIPAm110 pentablock terpolymer (Scheme 1),which was synthesized by the typical atomic transfer radical polymerization (ATRP) method with N-isopropylacrylamide (NIPAm) as the monomer and modified poly(ethylene oxide)100-poly(propylene oxide)65 -poly(ethylene oxide)100 (PEO100-PPO65-PEO100) block copolymer as the macroinitiator.