Hydrophilicity Enhancement of High‐Density Polyethylene Film by Ozonation

Gu, Hongbin; Wu, Jiangning; Doan, Huu

doi:10.1002/ceat.200800433

Cited by 17 publications

(22 citation statements)

References 19 publications

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“…7. Peroxides generated after different ozonation times in different media (Gu et al, 2009) Specific to fabrics, chemical modification via gas-phase ozone treatment was performed on nylon 6 taffeta, polyester taffetas (Lee et al, 2006), cationic dyeable polyester (CDP) and poly(butylene terephthalate) fibers (Lee et al, 2006. The surface analysis via ESCA was very comparable to the plasma studies by others (Fujimoto et al, 1993), the reader is referred to previous methods for process conditions .…”

Section: Ozone Gas Treatmentmentioning

confidence: 81%

“…To this extent, graft peroxide-initiated polymerization of acrylamide (AAm) proceeded successfully on the ozonated surfaces described in Section 2.2.1. The SEMs in Figure 10 clearly show the progression of the surface treatment to the final brush-like topography of AAm-grafted HDPE film (Gu et al, 2009). FTIR confirmed the presence of the amide groups with peak intensity at 1667 cm -1 increasing for the samples exposed longer to ozone treatment.…”

Section: Surface Graftingmentioning

confidence: 90%

“…It is also well-known that ozone will treat not only the surface but diffuse through the polymer bulk (Fujimoto et al, 1993;Ko et al, 2001;Kulik, Ivanchenko, Kato, Sano, & Ikada, 1995). The process is often done in the gas phase but aqueous treatment has also been employed with good results (Gu, Wu, & Doan, 2009). In an early study by Fujimoto et al, the surface oxidation of polyurethane (PU) and polyethylene (PE) films were evaluated by both ozone and plasma treatment (Fujimoto et al, 1993).…”

Section: Ozone Gas Treatmentmentioning

confidence: 99%

“…This property was utilized to produce hydrophilic and highly reactive high-density polyethylene (HDPE) films (Gu et al, 2009). The O 2 gas rate in this study was about twelve times higher with exit ozone concentrations ranging between 1-3.7 weight percent.…”

Section: Ozone Gas Treatmentmentioning

confidence: 99%

“…It was also demonstrated, however, that the grafting efficiency was reduced when the procedure was performed on PE film. This is attributed to lower levels of peroxides incorporated to the more chemicallyresistant PE film as compared to PU film (Gu et al, 2009). These two surface modifications are categorized as "grafting from" methods as the peroxide initiator was tethered to the fiber surface prior to the polymerization reaction.…”

Section: Surface Graftingmentioning

confidence: 99%

See 4 more Smart Citations

Surface and Bulk Modification of Synthetic Textiles to Improve Dyeability

Agrawal¹,

Gashti²,

Willoughby³

2011

Textile Dyeing

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Section: Ozone Gas Treatmentmentioning

confidence: 81%

Section: Surface Graftingmentioning

confidence: 90%

Section: Ozone Gas Treatmentmentioning

confidence: 99%

Section: Ozone Gas Treatmentmentioning

confidence: 99%

Section: Surface Graftingmentioning

confidence: 99%

See 3 more Smart Citations

Surface and Bulk Modification of Synthetic Textiles to Improve Dyeability

Agrawal¹,

Gashti²,

Willoughby³

2011

Textile Dyeing

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An investigation into surface modification of polyethylene films for hydrophilicity enhancement by catalytic ozonation

Mastan

Doan

2012

J of Applied Polymer Sci

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For a conventional polyethylene film, ozonation was conducted to increase its surface hydrophilicity. Copper sulfate was found effective as a catalyst in aqueous ozonation to increase the generation of surface peroxides significantly, which is the essential step for hydrophilicity enhancement. The percentage increase in peroxide generation could range from 41% to 58% by aqueous catalytic ozonation over its noncatalyzed gaseous counterpart. The optimum concentration of copper sulfate was found to be 0.05 g/L. After adding the catalyst, the length of ozonation could be significantly reduced so that the bulk mechanical strength of the films, represented by tensile strength, could be well preserved after ozonation. A novel kinetic model for the aqueous ozonation was proposed. This model was developed by combing the reaction mechanism of gaseous ozonation of polyethylene films with that of ozone self-decomposition in water. The peroxide generation also increased with the applied ozone dose. The surface morphology and contact angle of the film were all examined before and after ozonation.

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Tuning the interphase adhesion in high‐density polyethylene–silica nanocomposites with ionic liquids

Donato

Zhigunov

et al. 2019

J of Applied Polymer Sci

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This work addresses the use of ionic liquids (ILs) as multifunctional additives in the formation of high-density polyethylene (HDPE)/sol-gel silica nanocomposites via the melt-mixing process. Different approaches for nanocomposite formation were studied and compared, including (1) silica modification with ILs during the sol-gel process and further addition into the polymer matrix, (2) reactive mixing in which silica-IL filler was formed in situ, and (3) direct IL application in the melt-mixing chamber with nonmodified silica xerogel and HDPE. The nanocomposites were characterized by thermogravimetric analyses, differential scanning calorimetry, scanning electron microscopy, dynamic thermomechanical analyses, transmission electron microscopy, and contact angle analyses. To improve the silica compatibilization with HDPE, we investigated imidazolium ILs that presented at least one nonpolar ionic counterpart. This permitted control of the silica structure, morphology, dispersion, and interfacial interactions, providing enhancements in thermomechanical properties.It has been shown that a higher particle aspect ratio improves PE rigidity, toughness, and thermal and barrier properties. 4-11 The use of nanofillers, such as fumed silica, 4-6 clays, 6,8 and different carbon species, [9][10][11] in various processes has shown promising results. Chrissafis et al. 6 compared the addition of 2.5% multiwall carbon nanotubes, pristine and modified montmorillonite, and surface-treated and untreated SiO 2 nanoparticles to high-density polyethylene (HDPE) via melt-mixing. They concluded that the addition of SiO 2 presented the best dispersion, also increasing the mechanical properties and thermal stability without affecting the melting point and crystallization temperatures. Dorigato et al. 4 melt-compounded with HDPE various untreated (hydrophilic) or surface-treated (hydrophobic) fumed silica nanoparticles and observed that filler aggregation is favored with increasing surface area. They also concluded that the nanosilica dispersion was promoted when hydrophobically modified, consequently enhancing both the thermal degradation resistance and the dimensional stability. Altogether, by adding the surface-treated silica, they Additional Supporting Information may be found in the online version of this article.

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Hydrophilicity Enhancement of High‐Density Polyethylene Film by Ozonation

Cited by 17 publications

References 19 publications

Surface and Bulk Modification of Synthetic Textiles to Improve Dyeability

Surface and Bulk Modification of Synthetic Textiles to Improve Dyeability

An investigation into surface modification of polyethylene films for hydrophilicity enhancement by catalytic ozonation

Tuning the interphase adhesion in high‐density polyethylene–silica nanocomposites with ionic liquids

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