Hemp fibre nonwovens are developed in the research work with a goal to the materials surface modification applying metal and metal oxide nanoparticles. It is planned to investigate the electrical properties of nonwovens to determine their ability to serve as radiation insulation. Fibres cut into 5 cm long, some of them passed through Laroche Cadette equipment twice that opens the fibres and part manually combed before making nonwovens. Carded webs formed from prepared fibres by parallel-laid carding method. The fibres opened by using Laroche Cadette equipment formed web only by mixing hemp fibres with 15% Tencel fibres. Clean hemp fibres webs created from manually combed fibres. Hemp fibres nonwovens created by using hydroentanglement method.
-In this paper changes of ability of hemp fibre nonwovens to absorb water after deposition of metal and metal oxide nanoparticles were investigated. Moisture content of samples after storage in different climatic conditions was determined using thermogravimetric method. The obtained results were compared with the results of previous research based on investigation of water absorption of metalized woven fabric of bast fibre.Analysis of measurements showed that nonwoven samples with surface treated in plasma attract water slightly better than sample with untreated surface; this was more pronounced in woven fabric samples. In turn, metal coatings reduced water sorption. Unlike woven fabric samples, nonwoven samples attract similar water quantity irrespectively of surface modification. It can be concluded that metallization of hemp fibre nonwovens retain hygroscopic properties of these textile materials. Therefore, moisture content also needs to be controlled in nonwovens with metal and metal oxide nanoparticle coatings.
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