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- W3136121237 abstract "Abstract Poly(butylene succinate) (PBS)/polytetrafluoroethylene (PTFE) composites, including three types of PTFE powders, were prepared by melt blending using a HAAKE torque rheometer. Microcellular foams were successfully fabricated by batch foaming with supercritical fluids (scCO 2 ). The effects of PTFE powder type on crystallization, rheological properties and foaming behavior were studied. PTFE L-5 and PTFE JH-220 powders showed good dispersion in the PBS matrix, and PTFE FA-500 powder underwent fibrillation during the melt blending process. All three PTFE powders gradually increased the crystallization temperature of PBS from 78.2 to 91.8 ℃ and the crystallinity from 45.6 to 61.7% without apparent changes in the crystal structure. Rheological results revealed that PBS/PTFE composites had a higher storage modulus, loss modulus, and complex viscosity than those of pure PBS. In particular, the complex viscosity of the PBS/P500 composite increased by an order of magnitude in the low-frequency region. The foamed structure of PBS was obviously improved by adding PTFE powder, and the effect of fibrillated PTFE FA-500 was the most remarkable, with a pore mean diameter of 5.46 μm and a pore density of 1.86 × 10 9 cells/cm 3 (neat PBS foam: 32.49 μm and 1.95 × 10 7 cells/cm 3 ). Moreover, PBS/P500 foam always guarantees hydrophobicity." @default.
- W3136121237 created "2021-03-29" @default.
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- W3136121237 date "2021-03-24" @default.
- W3136121237 modified "2023-10-04" @default.
- W3136121237 title "The effect of polytetrafluoroethylene particle size on the properties of biodegradable poly(butylene succinate)-based composites" @default.
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- W3136121237 doi "https://doi.org/10.1038/s41598-021-86307-x" @default.
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