The effect of working pressure on the chemical bond structure and hydrophobic properties of PET surface treated by N ion beams bombardment

Ding, Wanyu; Ju, Dongying; Chai, Weiping

doi:10.1016/j.apsusc.2010.04.104

Cited by 21 publications

(9 citation statements)

References 17 publications

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“…PET is known to provide a hydrophobic surface30 and this property has been shown to be an important determinant for adhesion and adsorption of proteins31 to the surface. Our results showed that DS grafting on PET modified the fabric properties since the sulfate groups in this galactosaminoglycan (negative charges) conferred hydrophilic properties to the PET‐DS surface.…”

Section: Discussionmentioning

confidence: 99%

Grafting of dermatan sulfate on polyethylene terephtalate to enhance biointegration

Dhahri¹,

Abed²,

Lajimi³

et al. 2011

J Biomedical Materials Res

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The aim of the present study was to achieve the immobilization of dermatan sulfate (DS) on polyethylene terephthalate (PET) surfaces and to evaluate its biocompatibility. DS obtained from the skin of Scyliorhinus canicula shark was immobilized via carbodiimide on knitted PET fabrics, modified with carboxyl groups. PET-DS characterization was performed by SEM, ATR-FTIR and contact angle measurements. Biocompatibility was evaluated by investigating plasma protein adsorption and endothelial cell proliferation, as well as by subcutaneous implantations in rats. The results indicated that DS immobilization on PET was achieved at ~8 μg/cm². ATR-FTIR evidenced the presence of sulfate groups on the PET surface. In turn, contact angle measurements indicated an increase in the surface wettability. DS immobilization increased albumin adsorption on the PET surface, whereas it decreased that of fibrinogen. In vitro cell culture revealed that endothelial cell proliferation was also enhanced on PET-DS. Histological results after 15 days of subcutaneous implantation showed a better integration of PET-DS samples in comparison to those of nonmodified PET. In summary, DS was successfully grafted onto the surface of PET, providing it new physicochemical characteristics and biological properties for PET, thus enhancing its biointegration.

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Section: Discussionmentioning

confidence: 99%

Grafting of dermatan sulfate on polyethylene terephtalate to enhance biointegration

Dhahri¹,

Abed²,

Lajimi³

et al. 2011

J Biomedical Materials Res

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“…4(c). 19 So at the initial stage of SiO x N y film growth, the Si could react with O and N, which means that the N-Si-N and O-Si-N bonds could be formed, just as shown in Fig. 4(d).…”

Section: Crosslink Modelmentioning

confidence: 92%

“…Consideration of the rigid property of N-Si-N bridge bond, too many N-Si-N bonds could result in the higher residual stress in film, where the residual stress in SiN x film could reach about ±10 GPa. 19,23,24 The residual stress in 10 nm SiO x N y film could be easily balanced by the 175 μm PET substrate, which results in parts of the Si-N-Si bridging bonds are broken. 8 So the O 2 chemically adsorbed results in that the O atom percent increases to the illogical high value, just as shown in the blue curves in Fig.…”

Section: Crosslink Modelmentioning

confidence: 99%

An XPS study on the chemical bond structure at the interface between SiOxNy and N doped polyethylene terephthalate

Ding

Zhang

et al. 2013

The Journal of Chemical Physics

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The super-thin silicon oxynitride (SiOxNy) films were deposited onto the N doped polyethylene terephthalate (PET) surface. Varying the N doping parameters, the different chemical bond structures were obtained at the interface between the SiOxNy film and the PET surface. X-ray photoelectron spectra results showed that at the initial stage of SiOxNy film growth, the C=N bonds could be broken and C-N-Si crosslink bonds could be formed at the interface of SiOxNy∕PET, which C=N bonds could be formed onto the PET surface during the N doping process. At these positions, the SiOxNy film could be crosslinked well onto the PET surface. Meanwhile, the doped N could crosslink the [SiO4] and [SiN4] tetrahedrons, which could easily form the dense layer structure at the initial stage of SiOxNy film growth, instead of the ring and∕or chain structures of [SiO4] tetrahedrons crosslinked by O. Finally, from the point of applying SiOxNy∕PET complex as the substrate, the present work reveals a simple way to crosslink them, as well as the crosslink model and physicochemical mechanism happened at the interface of complex.

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“…During the bombardment process, the temperature of the ITO film sample increased from room temperature (about 25 °C) to 50 °C, gradually. The detailed description was discussed in our previous publication [18,19]. Based on the plasma theory and the methane dehydrogenation process in plasma, methyl cation (

{boldCH}_{3}^{+}

), methylene cation (

{boldCH}_{2}^{+}

), and methine cation (

{boldCH}_{}^{+}

) were formed in the ion source [20,21,22,23].…”

Section: Methodsmentioning

confidence: 99%

The Diffusion of Low-Energy Methyl Group on ITO Film Surface and Its Impact on Optical-Electrical Properties

Zhao

Guo

et al. 2018

Materials

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Indium tin oxide (ITO) film is one of the ideal candidates for transparent conductive cathode in methylammonium lead halide perovskite solar cells. Thus, the diffusion of methyl group in ITO film is inevitable, which could deteriorate the optical-electrical property of ITO film. In this study, ITO films with and without (100) preferred orientation were bombarded by the low-energy methyl group beam. After the bombardment, the optical-electrical property of ITO film without (100) preferred orientation deteriorated. The bombardment of methyl group had little influence on the optical-electrical property of ITO film with (100) preferred orientation. Finally, combining the crystallographic texture and chemical bond structure analysis, the diffusion mechanism of low-energy methyl group on ITO lattice and grain boundary, as well as the relation between the optical-electrical property and the diffusion of the methyl group, were discussed systematically. With the above results, ITO film with (100) preferred orientation could be an ideal candidate for transparent conductive cathode in methylammonium lead halide perovskite solar cells.

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The effect of working pressure on the chemical bond structure and hydrophobic properties of PET surface treated by N ion beams bombardment

Cited by 21 publications

References 17 publications

Grafting of dermatan sulfate on polyethylene terephtalate to enhance biointegration

Grafting of dermatan sulfate on polyethylene terephtalate to enhance biointegration

An XPS study on the chemical bond structure at the interface between SiOxNy and N doped polyethylene terephthalate

The Diffusion of Low-Energy Methyl Group on ITO Film Surface and Its Impact on Optical-Electrical Properties

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