Poly polystyrene dispersion agent

Recent studies in our laboratory (3) using polystyrene latex dispersions stabilised by the above "comb" dispersing agent have shown that polymers such as poly(ethylene oxide) induce wealc flocculation above a certain critical concentration of free polymer which was dependent on the molecular weight of the chain. 

Generally, in other identical conditions, the increase of temperature leads to a decrease of nnmber-average molecnlar mass of polystyrene (Fig. 10.12a). Thus, poly-dispersity index increases (Fig. 10.12b). If RAFT-agent initial concentration greatly exceeds AIBN initial concentration, then the temperature practically doesn t influence the molecnlar-mass properties of polystyrene. 

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