Unique Behavior of Poly(propylene glycols) Confined within Alumina Templates Having a Nanostructured Interface.

ABSTRACT: Herein we show that the nanostructured interface obtained via modulation of the pore size has a strong impact on the segmental and chain dynamics of two poly(propylene glycol) (PPG) derivatives with various molecular weights (M_n = 4000 g/mol and M_n = 2000 g/mol). In fact, a significant acceleration of the dynamics was observed for PPG infiltrated into ordinary alumina templates (D_p = 36 nm), while bulklike behavior was found for samples incorporated into membranes of modulated diameter (19 nm < D_p < 28 nm). We demostrated that the modulation-induced roughness reduces surface interactions of polymer chains near the interface with respect to the ones adsorbed to the ordinary nanochannels. Interestingly, this effect is no

SUBMITTER: Tarnacka M 

PROVIDER: S-EPMC7588129 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature