Nano-fibre spinning

Zeugolis DI et al (2008) Electro-spinning of pure collagen nano-fibres - Just an expensive way to make gelatin Biomaterials 29(15) 2293-2305... 

PP/silver nanocomposite fibres were prepared with the aim of achieving permanent antibacterial activity in a common synthetic textile. The fibres were melt-spun by coextmsion of PP and PP/silver masteibatches using general conjugate spinning. Masteibatches were made up of a mixture of PP chips and nano-sized silver powder. The antibacterial efficacy of spun fibres was high when the masteibatch was used as the sheath rather than the core. The antibacterial activity of nano-silver in fibres was evaluated after a certain contact time and calculated by percent reduction of two types of bacteria. Staphylococcus aureus and Klebsiela pneumoniae. DSC and wide-angle X-ray diffraction were used for analysis of stractuie, thermal properties and crystallisation behaviour of the spun fibres. SEM was carried out in order to observe particle distribution on the nanocomposite fibres. 17 refs. (2nd International Conference on Polymer Fibres, Manchester, UK, July 2002)... 

In view of this, nano titanium dioxide was synthesized and prepared as suspension with PVP solution. The mixture was set to electro-spin into fibre at 18KV. The e-spun fibre was subjected to differential thermal analysis to obtain the sintering profile for the titania fibre. The titania fibre was sintered at 500°C and 1200°C. The sintered phases and microstructural of titania fibre were analysed by using X-ray diffractometer and scanning electron microscope and presented. The cross-linked titania fibre formed a web-like structure maybe reduced the nano risk as compared to the nanoparticles. 

---