Molecular Mass Affects the Phase Separation of Aqueous PEG-Polycation Block Copolymer.

ABSTRACT: Mechanisms of the phase separation and remixing of cationic PEG-containing block copolymers have been investigated in aqueous lithium triflate solutions. The polycation was poly(vinylbenzyl trimethylammonium triflate). We have previously reported on one such block copolymer, which upon cooling of a hot clear solution first underwent phase separation into a turbid colloid and, later, partially cleared again with further cooling. To better understand the balance of various interactions in the solutions/dispersions, a series of polymers with varying DP of the cationic block was synthesized. From one of the polymers, the alkyl end group (a fragment of the chain transfer agent) was removed. The length of the cationic block affected critically the behavior, but the hydrophobic end group had a mi

SUBMITTER: Baddam V 

PROVIDER: S-EPMC6748676 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature