Effects of hydrogen-donating solvents on the thermal degradation of HDPE

Serrano, David; Aguado, J.; Vicente, Gemma; Sánchez, Nieves Núñez

doi:10.1016/j.jaap.2006.07.001

Cited by 27 publications

(15 citation statements)

References 19 publications

(24 reference statements)

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“…Thermal and thermooxidative degradation conditions shift the characteristic temperature to lower values when exposed to different temperatures at different time periods [6]. Thermal cracking of HDPE has been investigated in the presence of solvents with different hydrogen-donating capabilities by D. P. Serrano et al [7], The presence of wood powder in PP/HDPE, and MAPP/HDPE thermoplastic polymers increases the thermal stability and stiffness of the composites but adversely tensile strength decrease with wood powder content [8]. HDPE composites with a different weight fraction of silver nanoparticles were fabricated to study the influence of silver nanoparticles on thermal stability and tensile properties when exposed to UV radiation.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Aging on Mechanical Properties and Fatigue Behavior of PP/HDPE Thermoplastic Polymer Nanoclay Composites

Pydi¹,

Tjprc²

2018

IJMPERD

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Thermoplastic polymers are gaining their importance in their usage and emerging into industrial applications. Material degradation and loss of its properties due to exposure to different environmental conditions restrict their usage in engineering applications. The inclusion of nanofillers in these polymers can enable their usage in engineering application by reducing the degradation of the material. In the present study two thermoplastic polymers, Polypropylene (PP) and High-Density Polyethylene (HDPE) are considered for fabrication of nanoclay included thermoplastic polymer clay nanocomposites by melt blend method. These composites are exposed to the higher temperature to study the effect of thermal aging on mechanical and fatigue properties of nanoclay included PP/HDPE thermoplastic polymer nanocomposites. Nanoclay inclusion reduces the decrease in these properties due to thermal aging.

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Section: Introductionmentioning

confidence: 99%

Effect of Thermal Aging on Mechanical Properties and Fatigue Behavior of PP/HDPE Thermoplastic Polymer Nanoclay Composites

Pydi¹,

Tjprc²

2018

IJMPERD

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“…Increasingly used worldwide, HDPE is commonly used in packaging, health care, construction, vehicles, agriculture, instruments, and electronics. [1][2][3][4][5][6] Polyethylene (PE) is a semicrystalline polymer and a nonpolar thermoplastic resin that is formed by the copolymerization of ethylene monomer. It is widely used in various industries and composite materials.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and flame retardance of high-density polyethylene/sulfur-free expandable graphite composites

Kuan

et al. 2014

High Performance Polymers

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In this work, a hydrothermal method was used to prepare a novel, sulfur-free expandable graphite (EG), which was added to high-density polyethylene (HDPE) to improve the flammability and the dripping behavior of composites. Phosphoric acid (H3PO4) was utilized as the intercalating agent, and potassium permanganate and nitric acid were used as the oxidizing agent. EG was investigated using Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectrometry, energy dispersive spectrometry, and scanning electron microscopy. Thermogravimetric analysis, the limiting oxygen index (LOI) and UL-94 were used to examine the thermal and flame-retardant properties of the composites. The results demonstrated that the EG composite exhibited much better thermal stability than pure polymer. Additionally, at 30 wt% EG loading, the LOI value of HDPE/ EG fabrication by H3PO4-hydrothermal method (PEG) was 30, and the flammability standard of UL-94 reached the V0 level, verifying that the EG that was prepared using the H3PO4-hydrothermal process can effectively be used in fireproof composites. The tensile modulus of the composites increased with increasing filler content, while the tensile strength decreased. EG enhanced flexural strength and flexural modulus of HDPE composites but not with high EG loading. The impact strength of the composites was diminished due to the incorporation of EG into HDPE matrix.

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“…A study was also undertaken of the effect of dilution and thermal conditions on the high density polyethylene (HDPE) degradation in an inert solvent (phenyleter) and a hydrogen donor solvent such us tetralin [21]. In recent studies, solvents with different hydrogen donor capability have been used in the thermal degradation of HDPE [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…In recent studies, the effect of this type of solvents has been considered in the HDPE degradation. In particular, solvents with a low hydrogen donor capability (e.g., decalin) modify the thermal degradation mechanism of the polyolefin, enhancing the production of C 5 -C 32 a-olefins [22][23][24]. One of the main changes introduced by these solvents is the suppression of the reactions between intermediate radicals and a-olefins, an effect which is responsible for the enhancement in the a-olefin content of the final products.…”

Section: Introductionmentioning

confidence: 99%