Gyrocheilos W. T. Wang (Gesneriaceae) a new genus for the flora of Vietnam

Phuong, Vu Xuan

doi:10.15625/0866-7160/v30n1.5410

Cited by 1 publication

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“…10 Because of its high impact strength, elevated tensile strength, good chemical resistance, low density, and also rather low cost, polypropylene (PP) is one of the most widely used thermoplastics. 11 It is widely applied in the production of fibers, films for food packaging, bottles, and tubes. It has been demonstrated that the introduction of relatively small amounts of inorganic nanostructured materials in PP can effectively improve its chemical and mechanical stability.…”

Section: Introductionmentioning

confidence: 99%

Reprocessing effects on polypropylene/silica nanocomposites

Dorigato

Pegoretti

2013

J of Applied Polymer Sci

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A polypropylene matrix was melt compounded with a given amount (2 vol %) of both untreated (hydrophilic) and surface treated (hydrophobic) fumed silica nanoparticles with the aim to investigate the influence of the time under processing conditions on the microstructure and thermo‐mechanical properties of the resulting materials. Chain scission reactions induced by thermal processing caused a remarkable decrease of the melt viscosity, as revealed by the melt flow index values of both neat matrix and nanocomposites, but the degradative effect was significantly hindered by the presence of silica nanoparticles. It was observed that the size of nanofiller aggregates noticeably decreased as the compounding time increased, especially when hydrophobic silica nanofiller was considered. While the melting temperature seemed to be unaffected by the processing time, a remarkable embrittlement of the samples was observed for prolonged compounding times. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40242.

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Section: Introductionmentioning

confidence: 99%