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Optically transparent poly(methyl methacrylate) (PMMA)-based blends with significantly enhanced mechanical and shape memory properties have been successfully prepared via in-situ formation of micro-scale polylactide stereocomplex crystallites (sc-PLA) in the PMMA matrix in this work. To achieve this goal, a certain content of poly(l-lactide) (PLLA) was firstly melt-blended with PMMA to obtain completely...
Rapidly electro-active thermoplastic polyurethane (TPU)/polylactide (PLA) shape memory polymer (SMP) blends via phase morphology control and incorporation of conductive multi-walled carbon nanotubes (MWCNTs) were achieved by simple and efficient melt blending in this work. Binary TPU/PLA blends with various composition ratios were firstly prepared, and the effect of phase morphology on shape memory...
Polycarbonate (PC)/polyethylene (PE) blend was injection molded at three temperatures: 190, 230 and 275°C. Due to different deformability of PC phase at the different molding temperatures, the blends exhibit different morphologies. The sample molded at 190°C only contained many uniformly dispersed spherical PC particles due to the incapability of flow and deformation of PC phase at this temperature...
In situ microfibrillar reinforced blend (MRB) based on poly(ethylene terephthalate) (PET) and isotactic polypropylene (iPP) was elaborated by a slit die extrusion, hot stretching, and quenching process. The scanning electronic microscopic images show well-developed PET microfibers in the blends. The on-line small angle X-ray scattering (SAXS) test shows that PET microfibers have high nucleation for...
The high-pressure crystallized poly(ethylene 2,6-naphthalate) (PEN) samples were investigated using wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). DSC results showed that the melting temperature of high-pressure crystallized PEN samples was up to 603K, which is much higher than the equilibrium melting point of PEN suggested by Buchner...
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