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Published in: Cellulose 1/2018

02-11-2017 | Original Paper

Chemical crosslinking reinforced flexible cellulose nanofiber-supported cryogel

Authors: Huan Cheng, Yingzhan Li, Bijia Wang, Zhiping Mao, Hong Xu, Linping Zhang, Yi Zhong, Xiaofeng Sui

Published in: Cellulose | Issue 1/2018

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Abstract

A robust and flexible cellulose nanofiber (CNF)-supported cryogel was prepared by chemical crosslinking method using γ-glycidoxypropyltrimethoxysilane (GPTMS) and branched polyethylenimine (PEI). FT-IR, elemental analysis, EDS and solid state 13C NMR analysis revealed that the PEI had been successfully modified on cellulose via reacting with GPTMS. The obtained flexible cryogel displayed a three-dimensional structure composed of thin sheet. The maximal shape recovery of the CNF-supported cryogel from a 50% compression strain was up to 93% of its original thickness. The cryogel contained abundant amino groups and proved to be efficient in removing Cu2+ from solution with a maximum Cu2+ uptake of 138 mg/g. The adsorption kinetics curve fitted the pseudo-second-order model and the equilibrium absorption capacity fitted the Langmuir model. Moreover, adsorption capacity of the cryogel was up to 75% after four adsorption–desorption cycles (15 days).

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Appendix
Available only for authorised users
Literature
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go back to reference Xu FJ, Cai QJ, Li YL, Kang ET, Neoh KG (2005) Covalent Immobilization of glucose oxidase on well-defined poly(glycidyl methacrylate)−Si(111) Hybrids from surface-initiated atom-transfer radical polymerization. Biomacromol 6:1012–1020. https://doi.org/10.1021/bm0493178 CrossRef Xu FJ, Cai QJ, Li YL, Kang ET, Neoh KG (2005) Covalent Immobilization of glucose oxidase on well-defined poly(glycidyl methacrylate)−Si(111) Hybrids from surface-initiated atom-transfer radical polymerization. Biomacromol 6:1012–1020. https://​doi.​org/​10.​1021/​bm0493178 CrossRef
Metadata
Title
Chemical crosslinking reinforced flexible cellulose nanofiber-supported cryogel
Authors
Huan Cheng
Yingzhan Li
Bijia Wang
Zhiping Mao
Hong Xu
Linping Zhang
Yi Zhong
Xiaofeng Sui
Publication date
02-11-2017
Publisher
Springer Netherlands
Published in
Cellulose / Issue 1/2018
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-017-1548-7

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