Effect of the polyethylene confinement and topology on its crystallisation within semicrystalline ABC triblock copolymers

Synthesis and Characterization of Triblock Terpolymers with three Potentially Crystallisable Blocks: Polyethylene‐b‐poly(ethylene oxide)‐b‐poly(ε‐caprolactone)

“…This is due to the topological restrictions encountered by the PEO block when it is double tethered with an amorphous block (PB) at one end and a semicrystalline block (PCL) at the other one. The effect of double tethering has been previously investigated by Mü ller et al in PS-b-PE-b-PCL triblock terpolymers [8,9,24] . After hydrogenation the DSC scans are more complex.…”

“…To our knowledge, only ABC triblock terpolymers with one or two semicrystalline blocks have been reported. Balsamo et al reported the synthesis and characterization of polystyrene-b-polybutadiene-b-poly(e-caprolactone) triblock terpolymers [1][2][3][4][5][6] and their hydrogenated counterparts [7][8][9] ; where the first ones possess one crystallizable block (poly(e-caprolactone)) and the latter ones two semicrystalline components (poly(ecaprolactone) and polyethylene). Lambert et al synthesized an amphiphilic triarm star terpolymer based on polystyrene, poly-(ethylene oxide) and poly(e-caprolactone); i.e with two crystallizable blocks [10][11][12] .…”

Crystallization Kinetics of PEO and PE in Different Triblock Terpolymers: Effect of Microdomain Geometry and Confinement

“…In that case, the isothermal crystallization was followed by steps. [7,21] In the same way as that mentioned before, samples were heated up to 120 8C and held at that temperature for 3 min in order to erase any thermal history. Then, they were quenched down to T c at 80 8C Á min À1 , and the isothermal crystallization was followed during a given time, t c .…”

“…In the Avrami theory, the Avrami index is an integer number between 1 and 4, the value of which is considered to consist of two contributions. [7] The first one is related to the nucleation (instantaneous ¼ 0, sporadic ¼ 1), and the second one is related to the dimensionality of the crystal or…”

“…[1][2][3][4][5][6][7][8][9] The morphology is determined by a competition between two factors: [9][10][11][12][13][14] the block copolymer's ability to selfassemble, [15] which is based on the interactions among the different blocks (incompatible blocks are organized into separated microphases), and the crystallization of the crystallizable block(s). The final morphology has been found to be path-dependent, based on whether the crystallization occurs from a homogeneous state or a microphase-separated one.…”