Abstract
The crystallization and melting behavior of poly(e-caprolactone) (PCL) in a physically confined system, self-assembly blends of poly(e-caprolactone)/polystyrene-b-poly(ethylenepropylene) (PCL/PS−PEP), were studied by differential scanning calorimetry (DSC). The glassy PS-rich phases effectively confine the PCL crystallization due to the localization behavior of PCL where the PCL component appears to be localized in between the lamellae-like microdomains of PS block. Macrophase-separated and microphase-separated morphology were both identified in the self-assembly blends. The crystallization rate of PCL is strongly affected by the phase-separated morphology. The effective confinement on crystallization occurs while the size of lamellae-like confinement goes below submicrometer. Under effective confinement, the crystalline chains of PCL appear in random orientation at low crystallization temperature and in parallel orientation at high crystallization temperature as evidenced by simultaneous small-angle X-ra...
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