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Title: Immobilization of Chitosan on Nylon 6,6 and PET Granules through Hydrolysis Pretreatment
Authors: Zhang, X. 
Bai, R. 
Keywords: Coatings
Poly(ethylene terephthalate) (PET)
Issue Date: 27-Dec-2003
Citation: Zhang, X., Bai, R. (2003-12-27). Immobilization of Chitosan on Nylon 6,6 and PET Granules through Hydrolysis Pretreatment. Journal of Applied Polymer Science 90 (14) : 3973-3979. ScholarBank@NUS Repository.
Abstract: Chitosan has been increasingly studied as an adsorbent for removing heavy metal ions and organic compounds from aqueous solutions. Most of the studies used chitosan in the form of flakes, powder, or hydrogel beads. This research investigates the immobilization of chitosan on other granular materials to overcome the poor mechanical property of chitosan and offers the potential for chitosan to be used as a regenerable adsorbent. Nylon 6,6 and poly(ethylene terephthalate) (PET) granules were partially hydrolyzed under an acidic or alkaline condition to allow chitosan to be coated or immobilized on the granules' surfaces. The surface morphologies of nylon 6,6 or PET granules before and after hydrolysis and those with immobilized chitosan layer were examined by scanning electron microscopy (SEM), and their surface properties were characterized through ζ-potential analysis and X-ray photoelectron spectroscopy. The immobilization of chitosan on nylon 6,6 or PET granules was identified to be through the formation of the salt structure (-NH 3 +⋯-OOC-) between the surfaces of hydrolyzed nylon 6,6 or PET granules and the chitosan layer. © 2003 Wiley Periodicals, Inc.
Source Title: Journal of Applied Polymer Science
ISSN: 00218995
DOI: 10.1002/app.13101
Appears in Collections:Staff Publications

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