Surface modification of polypropylene non-woven fabric for improving its hydrophilicity

ABSTRACT

In this study, nano-silica thin films were deposited on the surface of polypropylene (PP) non-woven fabric (NWF) by reactive magnetron sputtering with a mixture of argon and oxygen gases to improve the hydrophilicity of the materials. The effects of process parameters, including oxygen gas concentration, treatment time, and density of the sample on the resulting hydrophilicity of the fabricated product were measured in terms of relative weight increase caused by the adsorption of water and water contact angle. The results indicated that the PP NWF modified by reactive magnetron sputtering at an oxygen gas concentration of 40%, a treatment time of 20 min, and a density less than 500 g/m² showed improved hydrophilicity. In addition, the surface morphology and chemical composition of the treated samples were examined by scanning electron microscopy and X-ray photoelectron spectrometry. It was determined that the silicon dioxide nanoparticles were evenly deposited on the surface of fibres.

KEYWORDS:

• Polypropylene non-woven fabric
• reactive magnetron sputtering
• nano-silica
• hydrophilic property

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This study was financially supported by National Key Research and Development Program of China (2016YFB0303100), Fundamental Research Funds for the Central Universities (JUSRP51505), Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX17_1450), and Scientific and technological achievements transformation project of Jiangsu Province (B22015119).