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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1537
Title: Enzymatic surface modification of polyacrylonitrile and its copolymers: Effects of polymer surface area and protein adsorption
Authors: Babu V.
Pasha S.K.
Gupta G.
Majumdar C.B.
Choudhury, Bijan
Published in: Fibers and Polymers
Abstract: Polyacrylonitrile (PAN) is a widely used polymer in the textile industry. PAN contains cyano groups on the surface due to which it possess low hydrophilicity and limits its application. Thus, there is a need to modify the functional groups on the surface of PAN for its industrial demand to improve moisture uptake, dyeability with ionic dyes, without affecting mechanical properties. A number of strategies such as chemical treatment, plasma treatment, enzymatic treatment etc. have been applied for the surface modification of polymer but enzymatic treatment are advantageous over plasma treatment and chemical treatment. In enzymatic treatment, reaction is limited to polymer surface only, and provides milder condition with less damage to polymer. In present study, it was found that enzyme system of Amycolatopsis sp.IITR215 was effective enzyme system for modification of surface nitrile groups of polyacrylonitrile. PAN powder was treated with the cell free extract of Amycolatopsis sp.IITR215 and it was found that the nitrile metabolizing enzymes of this strain were efficiently able to transform -CN to -COOH groups present on the surfaces of PAN powder. The formation of carboxyl group was quantified by ammonia released and dye binding assay. Further, confirmation of carboxyl group on polymer was done by FTIR and XPS. This study indicates that, specific adsorption of enzyme probably plays an important role in the enzymatic surface modification of polymer. © 2014 The Korean Fiber Society and Springer Science+Business Media Dordrecht.
Citation: Fibers and Polymers (2014), 15(1): 24-29
URI: https://doi.org/10.1007/s12221-014-0024-3
http://repository.iitr.ac.in/handle/123456789/1537
Issue Date: 2014
Keywords: Adsorption
Co-polymer
FT-IR
Nitrile metabolizing enzyme
Surface modification
ISSN: 12299197
Author Scopus IDs: 8982627200
55924120500
57209792251
11239027500
7103333522
Author Affiliations: Babu, V., Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Pasha, S.K., Physics of Energy Harvesting, National Physical Laboratory (CSIR), K. S. Krishnan Marg, New Delhi, 110012, India
Gupta, G., Physics of Energy Harvesting, National Physical Laboratory (CSIR), K. S. Krishnan Marg, New Delhi, 110012, India
Majumdar, C.B., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Choudhury, B., Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Funding Details: The authors gratefully acknowledge the financial support from the Department of Biotechnology, Govt. of India for providing research fellowship to Vikash Babu.
Corresponding Author: Choudhury, B.; Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India; email: bijanfbs@iitr.ernet.in
Appears in Collections:Journal Publications [BT]

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