phase separationblock copolymerspolymer blendstatistical theorymiscibilitydensity gradient modelThe miscibility of a homopolymer in corresponding domains of a copolymer predicted by Meier's theory is far less than found experimentally. In this paper, a density gradient model is suggested for describing the...
Studies of the PS-b-PB-b-PStriblock copolymerfilm at different imaging conditions have revealed that the AFM tip penetrates ∼20 nm through the topmostpolybutadienelayer before it reaches the microphase separation pattern seen inFigure 39a[31]. The bright domains inFigure 39awere assigned to ...
Block copolymer approach for the tunable ferroelectric response.aSchematic representation of the approach used for tuning of P(VDF-TrFE) ferroelectric properties using block copolymer self-assembly. The response of the block copolymers on the electric field depends strongly on the polarity of both bloc...
we demonstrate the formation of initial states based on layering of distinct block copolymer materials into stacked films, using sequential blade-coating. Subsequent thermal annealing of these bilayers of course intermixes the materials. However, because phase separation and self-assembly occur alongside ...
(2–5) showed that phase separation of the copolymer blocks occurred when concentrated solutions of the copolymers were prepared in a solvent preferential for one of the components. The mesomorphous phases were cylindrical, lamellar and spherical in structure and were interconvertible by varying the...
Block Copolymer Synthesis Synonyms Diblock copolymer;Multiblock copolymer;Triblock copolymer;Triblock terpolymer Definition Summarizing the recent advances in a wide variety of block copolymer synthesis, including the following strategies: living polymerization of different monomers by sequential additions, the ...
Since the POEGMA#–PS system possesses a relatively sparse distribution of charges along the low-molecular-weight POEGMA block, there might be inherent inhomogeneities in the charge distribution per each block copolymer, inducing a nontrivial phase separation between uncharged and charged species19, ...
www.nature.com/scientificreports OPEN received: 21 September 2015 accepted: 09 December 2015 Published: 19 January 2016 Perpendicularly oriented sub- 10-nm block copolymer lamellae by atmospheric thermal annealing for one minute Takehiro Seshimo1,2, Rina Maeda1,†, Rin Odashima1,Yutaka ...
1. A medical device comprising a phase-separated block copolymer of two or more polymer blocks and the medical device comprising two or more active agents; wherein the phase-separated block copolymer comprises two or more phase domains; wherein a first active agent is preferentially incorporated ...
A block copolymer comprises block A containing as a main component thereof a homopolymer consisting of units of a vinylaromatic hydrocarbon (VAH), block B consisting of units of a conjugated diene (CD