Each DCPAM is composed of a neutral hydrophilic block with m monomers and a charged block with n monomers, denoted as A m and B n , respectively. Its chemical structure is shown in Fig. (a). To model different block sizes, a chain of total of 20 monomers with a block ratio of m : n is used, where m = 20 -n. Since the B n -block is positively charged, n numbers of Cl -counterions per DCPAM chain are added to neutralize each polymer. We explore varying DCPAM concentrations of 5, 10, and 15 wt% by including 5, 10, and 15 DCPAMs per simulation box, respectively.