Multi‐responsive methylcellulose/Fe‐alginate‐g‐PVA/PVA/Fe 3 O 4  microgels for immobilizing enzyme | Zendy

Xiao Congming | Zendy; Ma Peipei | Zendy; Geng Nannan | Zendy

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Multi‐responsive methylcellulose/Fe‐alginate‐g‐PVA/PVA/Fe 3 O 4 microgels for immobilizing enzyme

Author(s) -

Xiao Congming,

Ma Peipei,

Geng Nannan

Publication year - 2011

Publication title -

polymers for advanced technologies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.61

H-Index - 90

eISSN - 1099-1581

pISSN - 1042-7147

DOI - 10.1002/pat.1701

Subject(s) - vinyl alcohol , chemical engineering , materials science , adsorption , ferrous , magnetite , immobilized enzyme , polymer chemistry , ionic bonding , ion , enzyme , chemistry , polymer , organic chemistry , composite material , metallurgy , engineering

To take advantage of the respective character of methylcellulose (MC), poly(vinyl alcohol) (PVA), and alginate, novel physically cross‐linked methylcellulose/Fe‐alginate‐g‐PVA/PVA (MC/Fe‐Alg‐g‐PVA/PVA) microgels were prepared by emulsification/thermal gelation/freezing–thawing/ionic cross‐linking technique. Subsequently, some ferrous ions bound in the microgels were transformed into magnetite via in situ self oxidation. A model enzyme α ‐amylase was immobilized into microgels by direct adsorption. The release behavior of α ‐amylase indicated that the obtained complex microgels were magnetic‐, temperature‐, and pH‐ triple sensitive. Copyright © 2010 John Wiley & Sons, Ltd.

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