scholarly journals Melt-Electrospun Polyethylene Nanofiber Obtained from Polyethylene/Polyvinyl Butyral Blend Film

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 457 ◽  
Author(s):  
Mohammad Zakaria ◽  
Kanta Shibahara ◽  
Koji Nakane
Keyword(s):  
Fourier Transform ◽  
Fiber Diameter ◽  
Polyvinyl Butyral ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Ethanol Treatment ◽  
Fiber Splitting ◽  
Melt Electrospinning ◽  
Blend Fiber ◽  
Diameter Reduction

We prepared low-density polyethylene (LDPE) nanofiber, a few hundred nanometers in diameter, using polyvinyl butyral (PVB) and a laser melt-electrospinning (M-ESP) device. We blended PVB with LDPE via an internal melt mixer, removed the PVB after M-ESP by ethanol treatment, and studied the influence of PVB on fiber diameter. A substantial diameter reduction with improved crystallinity of LDPE fiber was observed with increased PVB content in the blend. PVB inclusion also increased the polarity of the LDPE/PVB blend, resulting in better spinnability. The removal of PVB from LDPE/PVB blend fiber caused a massive drop in the LDPE fiber diameter, due to fiber splitting, particularly in PVB-rich samples. Fourier transform infrared (FTIR) spectroscopy of fibers confirmed that the prepared nanofiber was the same as pure LDPE fiber.

Investigation of Epoxidized Natural Rubber (ENR 50) as a Compatibilizer on Cogon Grass Filled Low Density Polyethylene/Soya Spent Flour

2014 ◽  
Vol 803 ◽  
pp. 310-316 ◽  
Author(s):  
S.T. Sam ◽  
Nurul Hani ◽  
H. Ismail ◽  
Nik Noriman ◽  
S. Ragunathan
Keyword(s):  
Tensile Strength ◽  
Fourier Transform ◽  
Natural Rubber ◽  
Water Absorption ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Fourier Transform Infrared ◽  
Epoxidized Natural Rubber ◽  
Low Density Polyethylene ◽  
Low Density

Natural fiber reinforced composites are increasingly being used in various applications area. Therefore, the processing method and physical properties of these composites are very important parameters in product quality and quaranty. This paper focused on the tensile properties, Fourier transform infrared (FTIR) and water absorption of cogon grass (CG) with low density polyethylene (LDPE)/soya spent flour (SSF) composites. The tensile strength and elongation at break (Eb) of uncompatibilized CG with LDPE/ SSF decreased significantly with increasing of fiber content. However, the Young’s modulus increased with increasing of CG loading. The presence of epoxidized natural rubber (ENR 50) as a compatibilizer increased the tensile strength, Eband Young’s modulus of the composites when compared to uncompatibilized composites. Fourier transform infrared results show distinguishable peaks for compatibilized and uncompatibilized composites. The water absorption for both uncompatibilized and compatibilized composites increased from day 1 until day 21. The presence of ENR 50 as compatibilizer showed lower water absorption percentage compared to uncompatibilized composites.

Study on Anti-Fog Films of Polyethylene Modified with Inorganic Micrometer Diatomite

2012 ◽  
Vol 200 ◽  
pp. 347-350
Author(s):  
Wei He ◽  
Qing Hong Fang ◽  
Wei Lin ◽  
A.S. Luyt ◽  
Tie Jun Ge
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fourier Transform ◽  
Surface Treatment ◽  
Fourier Transform Infrared ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Elongation At Break ◽  
Treatment Agent ◽  
Infrared Spectrometer

Anti-fog films of low density polyethylene (LDPE) modified with micrometer diatomite were prepared by a process of blow molding. Through examination of antifogging property of the film added the anti-fog agents, the modification effectiveness of inorganic micrometer diatomite and the influence of different treating agents were studied with Fourier transform infrared spectrometer (FTIR), mechanical properties, and antifogging performances. The results indicate that the anti-fog property of the film can be improved by premixing inorganic micrometer diatomite with the anti-fog agents; the film modified by inorganic micrometer diatomite added surface treatment agent has obviously effectiveness anti-fog properties than that the films modified only by the anti-fog agents. Addition of polyacrylamide can make the anti-fog durability of the films modified by inorganic micrometer diatomite be further prolonged. It was observed that the tensile strength does not show any decrease, however, elongation at break show a massive decreased.

Determination of the Percentage of Homopolymer Component in Ziegler/Natta Catalyst Linear Low-Density Polyethylene Resins Using High-Temperature Cell Fourier Transform Infrared and Partial Least Squares Quantitative Analysis Technique

2005 ◽  
Vol 59 (3) ◽  
pp. 300-304 ◽  
Author(s):  
Marlee Cossar ◽  
Joo Teh ◽  
Annikki Kivisto ◽  
Jason Mackenzie
Keyword(s):  
Fourier Transform ◽  
High Temperature ◽  
Quantitative Analysis ◽  
Ir Spectrum ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Analysis Technique ◽  
Ft Ir

A new method for the determination of the percentage of homopolymer component, using high-temperature cell Fourier transform infrared (FT-IR) by partial least squares (PLS) quantitative analysis technique, was developed and applied to Ziegler Natta linear low-density polyethylene (LLDPE). The method is based on the IR spectrum changes between the 730 cm−1 band and 720 cm−1 band at the temperature of 110 °C, which is near the melting point of the polyethylene. The HD% (the percentage of high-density component, i.e., the percentage of homopolymer component) results obtained by CTREF (CRYSTAF in TREF mode) technique are used as the input data together with the respective FT-IR spectra for PLS analyses to establish a calibration curve. The PLS quality is characterized by a correlation coefficient of 0.997 (cross-validation) using four factors and a root mean square error of calibration (RMSEC) of 0.772. The HD% of the unknown can then be predicted by the PLS software from the unknown FT-IR spectrum. A control resin was tested seven times by CTREF and FT-IR. The HD% of the control resin was 28.59 ± 0.88% by CTREF and 29.05 ± 2.37% by FT-IR. It was found that the method was applicable for the same comonomer type of LLDPE within a melt index range and density.

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