Surface properties and depth analysis of polyethylene/polydimethylsiloxane composite prepared by using supercritical carbon dioxide
| Autor: | Shoichiro Yano, Ryota Usui, Rui Zhu, Sasaki Daisuke, Toshiki Hagiwara, Takashi Sawaguchi, Toru Hoshi |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Supercritical carbon dioxide Polymers and Plastics Polydimethylsiloxane Composite number technology industry and agriculture macromolecular substances Polyethylene Contact angle chemistry.chemical_compound chemistry Chemical engineering Polymerization Attenuated total reflection Polymer chemistry Materials Chemistry Wetting |
| Zdroj: | Polymer Journal. 42:562-566 |
| ISSN: | 1349-0540 0032-3896 |
| DOI: | 10.1038/pj.2010.46 |
| Popis: | Blends of polyethylene (PE) and polydimethylsiloxane (PDMS) are usually immiscible and have phase-separated morphology. In this study, the polymer composite comprising PE and PDMS with a hydrophobic surface was developed. This composite was obtained by a synthetic method using supercritical carbon dioxide. Results of X-ray photoelectron spectroscopy and attenuated total reflection Fourier-transform infrared spectroscopy indicated that PDMS was located on the surface of the PE substrate. Scanning electron microscope–energy-dispersive X-ray (SEM–EDX) measurement provided the depth information indicating that PDMS existed in the PE substrate. Water contact angle measurement revealed that the hydrophobicity of PE had been improved from 94 to 105° by incorporating PDMS. The structure of polyethylene/polydimethylsiloxane polymer composites prepared by using supercritical carbon dioxide could be controlled in the depth direction. It depends on the control of the mass gain, namely, the polymerization time. |
| Databáze: | OpenAIRE |
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