Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/34761
Title: PREPARATION OF NOVEL FUNCTIONALIZED NANOFIBERS FROM HYDROPHILIC POLYMERS AND THEIR APPLICATIONS
Authors: NARAHARI MAHANTA
Keywords: Polyvinyl alcohol, Cellulose, Electrospinning, Nanofiber, Water filtration, Biomedical application
Issue Date: 20-Jan-2012
Source: NARAHARI MAHANTA (2012-01-20). PREPARATION OF NOVEL FUNCTIONALIZED NANOFIBERS FROM HYDROPHILIC POLYMERS AND THEIR APPLICATIONS. ScholarBank@NUS Repository.
Abstract: In this investigation, preparation of hydrophilic nanostructured membranes derived from poly (vinyl alcohol) (PVA) and cellulose based macromer was developed for environmental detoxification. To obtain the best extraction efficiency, surface hydroxyl groups of PVA nanofibers were modified with functional groups, such as thiols and amines. Apart from that cellulosic nanofibers were isolated from sugarcane bagasse and amine group was incorporated by coating the cellulose nanofiber with chitosan. Both PVA and cellulose nanofibers showed high extraction efficiency (more than 90%) towards silver and gold nanoparticles from water. Similarly, Fe (III) coordinated PVA nanofiber was developed for the removal of Arsenic from water with very high efficiency. Also, PVA nanofibers incorporated with protein and methacrylated PVA/cellulose nanofibers with silver nanoparticles were prepared. Similar materials was also compared with hydrogel systems. Current investigation provides a method to design of novel nanofibrous membranes from hydrophilic polymers for setting up large scale water purification system.
URI: http://scholarbank.nus.edu.sg/handle/10635/34761
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