Size and geometry controlled synthesizing nano-rods via developing a novel in situ polyol process

Considering some difficulties in the case of applying nano-sized colloidal particles on textiles, this research has focused on the incorporating the two steps of synthesizing and applying the nano-structures via a novel in situ process. This research has also targeted at the size and geometry controlled fabrication of the nanostructures by controlling the nucleation and crystal growth mechanisms. The effects of reaction velocity, chemical ratio, temperature, procedure, and pre-treatment have been investigated based on a qualitative study focused on SEM. The effects of different procedures have been also investigated on both mercerized and un-mercerized fabrics. SEM micrographs confirmed fabrication of the nano-rods with a high aspect ratio on the fiber surfaces oriented parallel with fiber axes. Comparing the back and front of fabrics proved that most particles are deposited on the front of fabrics by using spray method. The high temperature drying resulted in some differences in the shape of rods and changed their shapes to nano-ribbons. Generally speaking, more potentiality for growing nano-rods with higher level of orientation has been observed for mercerized fabrics compared to un-mercerized ones in each process. The effect of PVP/silver mole ratio on conducting a shape control reaction has been confirmed. Exhaustion process under ultrasound is not suitable to this end because complete control on the shape of nanostructures cannot be accomplished by this method compared with pad and spray processing.