Polímeros: Ciência e Tecnologia
Polímeros: Ciência e Tecnologia
Original Article

Sheath-core bicomponent fiber characterization by FT-IR and other analytical methodologies

Marcia Murakoshi Takematsu; Milton Faria Diniz; Elizabeth da Costa Mattos; Rita de Cássia Lazzarini Dutra

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Abstract: The bicomponent fibers are a special class of fibers that consolidate two polymers in only one fiber in order to explore individual properties of each polymer and can be designed in a spatial configuration that allows the enhancement in application of this material. Thereby, an appropriate characterization of bicomponent fibers is very valuable to process monitoring, quality control and forensic investigation. The sheath-core bicomponent fiber composed by polyethylene (PE), polypropylene (PP) and titanium dioxide (TiO2) was analyzed by Fourier transform infrared (FT-IR) spectroscopy and other analytical methodologies. Results obtained by FT-IR using modern accessories showed efficiency to characterize the polymers of sheath (PE) and core (PP), moreover these polymers were confirmed by DSC (Differential Scanning Calorimetry). The morphology and elemental composition were also studied by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS). The thermogravimetric analysis (TGA) and colorimetric analysis allowed characterize and quantify the concentration of TiO2.


bicomponent fiber, characterization, FT-IR, polyethylene, polypropylene


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