Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx
In this paper, we report on polyethylene (PE) film modified by atmospheric dielectric barrier discharge (DBD) plasma prior to the deposition of SiOx coating to improve its barrier properties. Three kinds of monomers: allylamine, acrylic acid, and ethanol, are used to modify the PE surface. For compa...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/24/4/780 |
| _version_ | 1811269759032885248 |
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| author | Hua Li Lizhen Yang Zhengduo Wang Zhongwei Liu Qiang Chen |
| author_facet | Hua Li Lizhen Yang Zhengduo Wang Zhongwei Liu Qiang Chen |
| author_sort | Hua Li |
| collection | DOAJ |
| description | In this paper, we report on polyethylene (PE) film modified by atmospheric dielectric barrier discharge (DBD) plasma prior to the deposition of SiOx coating to improve its barrier properties. Three kinds of monomers: allylamine, acrylic acid, and ethanol, are used to modify the PE surface. For comparison, Ar and O<sub>2</sub> plasma pre-treatments are also performed. It is found that with the addition of a monomer in the Ar DBD plasma, the grafted active groups on PE surfaces lead to dense, pinhole-free growth of the SiOx film. The oxygen transmission rate (OTR) decreases from 700 cc/m<sup>2</sup>·day·atm. for the pristine to ca. 70 cc/m<sup>2</sup>·day·atm. for the pretreatment-coated PE, which is more than a 10-fold reduction. The relationship between the grafted monomer and the great decrease of OTR is then explored via chemical composition by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and via morphology observation by atomic force microscopy (AFM) and scanning electron microscopy (SEM). The results show that the grafted functional groups of -NH<sub>2</sub>, -COOH and -OH increase the surface energy and promote the nucleation of Si⁻O radicals on polymeric surfaces, and the formation of network and cage structures in SiOx film contributes to the significant improvement of OTR. |
| first_indexed | 2024-04-12T21:48:58Z |
| format | Article |
| id | doaj.art-be341b39cf774eec831fc947b3d7045d |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-04-12T21:48:58Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-be341b39cf774eec831fc947b3d7045d2022-12-22T03:15:33ZengMDPI AGMolecules1420-30492019-02-0124478010.3390/molecules24040780molecules24040780Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOxHua Li0Lizhen Yang1Zhengduo Wang2Zhongwei Liu3Qiang Chen4Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Institute of Graphic Communication, Beijing 102600, ChinaIn this paper, we report on polyethylene (PE) film modified by atmospheric dielectric barrier discharge (DBD) plasma prior to the deposition of SiOx coating to improve its barrier properties. Three kinds of monomers: allylamine, acrylic acid, and ethanol, are used to modify the PE surface. For comparison, Ar and O<sub>2</sub> plasma pre-treatments are also performed. It is found that with the addition of a monomer in the Ar DBD plasma, the grafted active groups on PE surfaces lead to dense, pinhole-free growth of the SiOx film. The oxygen transmission rate (OTR) decreases from 700 cc/m<sup>2</sup>·day·atm. for the pristine to ca. 70 cc/m<sup>2</sup>·day·atm. for the pretreatment-coated PE, which is more than a 10-fold reduction. The relationship between the grafted monomer and the great decrease of OTR is then explored via chemical composition by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and via morphology observation by atomic force microscopy (AFM) and scanning electron microscopy (SEM). The results show that the grafted functional groups of -NH<sub>2</sub>, -COOH and -OH increase the surface energy and promote the nucleation of Si⁻O radicals on polymeric surfaces, and the formation of network and cage structures in SiOx film contributes to the significant improvement of OTR.https://www.mdpi.com/1420-3049/24/4/780DBD plasmamodificationPE filmbarrier properties |
| spellingShingle | Hua Li Lizhen Yang Zhengduo Wang Zhongwei Liu Qiang Chen Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx Molecules DBD plasma modification PE film barrier properties |
| title | Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx |
| title_full | Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx |
| title_fullStr | Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx |
| title_full_unstemmed | Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx |
| title_short | Pre-grafted Group on PE Surface by DBD Plasma and Its Influence on the Oxygen Permeation with Coated SiOx |
| title_sort | pre grafted group on pe surface by dbd plasma and its influence on the oxygen permeation with coated siox |
| topic | DBD plasma modification PE film barrier properties |
| url | https://www.mdpi.com/1420-3049/24/4/780 |
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