Stripping of Colored Waste Acrylic Fibers
The carpet industry is one of the important sections of textile industry.In recent years,the use of acrylic fibers in production of machine made carpet has been developed.Textile industry,especially in carpet and blanket section,produces a large amount of waste acrylic fibers which are in the form of mixture of different colors.Thus these fibers can not be used again directly without decoloration and redyeing.Acrylic fibers are hard to bleach and so the stripping of dyed acrylic fibers is difficult.In order to save in the production cost,a possibility of the waste decoloration which was obtained during the carpet finishing has been studied.Our aim was the complete waste decoloration (original white) without any physical or chemical degradation or damage to the fiber.In this study,the effect of several bleaching agents on colored waste acrylic fibers have been examined and compared.Then the best process using the proper stripping agent and auxiliary chemicals which produced white fibers and make the less physical damage to the fibers have been selected and evaluated.The stripping agent used is Na.Hypochlorite and the main auxiliary chemicals were mono ethanol amine and sodium chlorite.Finally the stripped fibers have been re-dyed and compared with new acrylic fibers of same type which have been dyed with the same recipe.The results have shown that the stripped fibers can be dyed similar to the new (raw) acrylic fibers.This process is environmental-friendly and can prevent from wasting large amounts of costly acrylic fibers annually.
Acrylic Decoloration Stripping Carpet waste Sodium hypochlorite
Aminoddin Haji Hossein Barani Reza M.A.Malek Foruzmehr Mazaheri Seydmohammad Mirhosseini
Department of Textile Engineering,Islamic Azad University-Birjand Branch,Birjand,Iran Department of Textile Engineering,AmirKabir University of Technology,Tehran,Iran
国际会议
杭州
英文
2008-10-15（万方平台首次上网日期，不代表论文的发表时间）