Effect of functionalized polyethylenes on clay dispersion in high density polyethylene nanocomposites

Sánchez-Valdés, S.; Ramı́rez-Vargas, E.; Valle, L.F. Ramos de; Méndez-Nonell, J.; Martínez‐Colunga, Juan Guillermo; Gutiérrez-Villarreal, Mario H.; Lopez‐Quintanilla, M. L.; Sanchez-Adame, M.; Mendoza-Garcia, D.

doi:10.1007/s00289-012-0850-7

Cited by 9 publications

(6 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the content of PE ‐g‐ MAH was too low to improve the interfacial compatibility between HDPE and PA6. Therefore, compared with HDPE/OMMT(100/3)‐PA6, the elongation at break of the HDPE/PE‐ g ‐MAH/OMMT(100/1/3)‐PA6 nanocomposite decreased with the increase of the tensile strength, which is similar to some previous works . When the content of PE ‐g‐ MAH was increased from 1 to 7 phr, as the OMMT nanoparticles migrated to the interfaces and the PA6 layers and their dispersion became more homogeneous, the tensile strength of the nanocomposites continued to increase but the increasing rate became smaller.…”

Section: Resultssupporting

confidence: 86%

Selective localization of organic montmorillonite nanoparticles in multilayered high‐density polyethylene/polyamide 6 composites

Xie

Qin

et al. 2017

Adv Polym Technol

View full text Add to dashboard Cite

To achieve a selective localization of nanoparticles in multilayered two-component polymer blends, an intentional two-step process, first pre-compounding and then coextruding, was employed to prepare multilayered high-density polyethylene (HDPE)/ polyethylene-grafted maleic anhydride (PEg-MAH)/organic montmorillonite (OMMT)-polyamide 6 (PA6) nanocomposites. The dispersion of OMMT was evaluated by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results showed that the localization of OMMT was tunable with different content of PE-g-MAH. By comparing the localization of OMMT in a single-layered nanocomposite with that in the multilayered nanocomposites, as well as by theoretically calculating wetting coefficients of the multilayered nanocomposites, the migration mechanism of OMMT was revealed. As demonstrated by differential scanning calorimetry (DSC), transmission rate measurement and tensile test, the selective localization of OMMT in the multilayered nanocomposites could increase crystallinity degree of the two-polymer components, enhancing oxygen barrier property and tensile strength of the nanocomposties. K E Y W O R D Shigh-density polyethylene, migration of nanoparticles, multilayered composites, polyamide 6, selective localization

show abstract

Section: Resultssupporting

confidence: 86%

Selective localization of organic montmorillonite nanoparticles in multilayered high‐density polyethylene/polyamide 6 composites

Xie

Qin

et al. 2017

Adv Polym Technol

View full text Add to dashboard Cite

show abstract

“…Gilman et al manufactured exfoliated nylon 6/montmorillonite nanocomposites by melt compounding via the use of 1,2‐dimethyl‐3‐hexadecylimidazolium as the surfactant. Sanchez‐Valdes et al improved the exfoliation of clay in high‐density polyethylene (HDPE) by using different compatibilizers and observed that the HDPE/clay nanocomposites with the presence of pre‐reacted maleated HDPE and 2‐[2‐(dimethylamine)ethoxy]ethanol showed the best exfoliation.…”

Section: Introductionmentioning

confidence: 99%

Enhancements of clay exfoliation in polymer nanocomposites using a chemical blowing agent

Istrate

Chen

2014

Polymer International

View full text Add to dashboard Cite

show abstract

“…Sanchez-Valdes et al used a twin-screw extruder to melt process a montmorillonite mixture modified with polyethylene and ammonium-based surfactant. Their results showed that all the compatible nanocomposites were preferably viscous, and that higher clay contents would result in poor clay dispersion or intercalation effect, insignificant changes in melting temperature, as well as an evident reduction in crystallinity [ 14 ]. Sibeko et al explored the effects of vinyltriethoxysilane treatment and nanoclay content on the low-density polyethylene (LDPE)/clay nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

Effects of wood fiber impulse-cyclone drying process on the UV-accelerated aging properties of wood-plastic composites

Chen²,

Sang³

2022

PLoS ONE

View full text Add to dashboard Cite

The impulse-cyclone drying and the silane coupling agent (A187) modification are applied to treat wood fibers under the following conditions: 180°C, 180°C+A187, 200°C+A187, 220°C+A187 and 240°C+ A187. Then, HDPE/wood fiber composites are fabricated with a two-stage plastic extruder, and the effects of impulse-cyclone drying technique on the UV-accelerated aging properties of composites are investigated. Fourier-transform infrared spectroscopy (FTIR) reveals that the silane coupling agent chemically reacts with the hydroxyl groups on the wood fiber surfaces, the anti-UV aging properties of composites is enhanced. Mechanical test shows that during the 0–3000 h of UV aging process, the mechanical properties of samples tend to increase initially and then decrease within a period of time. After 3000 h of UV aging, the specimen 4 exhibits the least loss of mechanical properties, with flexural modulus, flexural modulus and impact strength of 65.40 Mpa, 2082.08 Mpa and 12.85 Mpa, respectively. The effects of impulse-cyclone drying technique on the UV-accelerated aging properties of composites are investigated through Spectrophotometry and Surface microstructure observation. indicates that the ΔL* and ΔE* values increase greatly at the stage of 0–1000 h aging, which though tend to stabilize after 1000 h. The degree of discoloration changes little for specimen 4,and the number of surface cracks is relatively small, which exhibits the optimal aging resistance. In conclusion, the addition of wood fibers treated by impulse-cyclone drying (220°C) and A187 modification is effective in enhancing the anti-UV aging properties of HDPE/wood fiber composites. Nevertheless, such enhancing effect turns to decline when the temperature of impulse-cyclone drying treatment is excessively high.

show abstract

Effect of functionalized polyethylenes on clay dispersion in high density polyethylene nanocomposites

Cited by 9 publications

References 22 publications

Selective localization of organic montmorillonite nanoparticles in multilayered high‐density polyethylene/polyamide 6 composites

Selective localization of organic montmorillonite nanoparticles in multilayered high‐density polyethylene/polyamide 6 composites

Enhancements of clay exfoliation in polymer nanocomposites using a chemical blowing agent

Effects of wood fiber impulse-cyclone drying process on the UV-accelerated aging properties of wood-plastic composites

Contact Info

Product

Resources

About