Browsing by Subject "nokkoskuidun irrotustekniikat"

The goal of my study is to find information about methods of extraction of nettle fiber. For hundreds of years the nettle fiber has been used as a textile material in Europe. Linen, because of its higher fiber content, and cotton, when it came to the market, replaced the use of nettle fiber and the knowledge of extraction methods of nettle fiber disappeared. Research for using nettle fiber was made in Germany during the 19th century. Shortage of textile materials during the World Wars increased interest in nettle fiber in Germany and in Britain. I carried out my study as a systematic literature review. I found the framework of the material with search engines of Helka and the internet by using search keywords. In one study nettle was grown in Tuscany in 2006–2007 and the quality of nettle was investigated. In another study nettle was grown in Prato in 2007 and influence of extraction techniques to the nettle fiber was studied. Properties of nettle fiber was studied by Bodros and Baley with the nettles collected in France. Additionally I found a study in which qualities of Himalayan giant nettle (Girardinia diversifolia L.) and European nettle (Urtica dioica L.) were compared. A study made in Latvia clarifies the quality of nettle grown in Latvia and posibility to utilize that as textile material. The article of Harwood and Edom brings out the history of study about nettle fiber during the World Wars. The methods of extraction of nettle fiber which I found became as a result of my study. Nettle fiber was seen as a eco-friendly option, although the extraction methods can increase environmental hazards. Basics in extraction of the fiber were water or chemical retting or boiling and drying and shattering the bark of processed nettle stem. The order of different phases of extraction methods could be changed or one phase could be left out. For my own experiments water retting and drying seem to be most useful.