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Title: Cross-linked poly(methyl vinyl ether-co-maleic acid)/poly(ethylene glycol)/nanocellulosics foams via directional freezing

Abstract

Aligned micro- and nanoporous materials have gained tremendous interest since they demonstrate great potential in organic electronics, absorbents, biomedicine and tissue engineering. Herein, cellulose nanofibrils (CNFs) and cellulose nanocrystals (CNCs) cross-linked with poly(methyl vinyl ether-co-maleic acid) (PMVEMA) and poly(ethylene glycol) (PEG) foams were prepared by both the directional and un-directional freezing techniques. Aligned three-dimensional porous structures were indicated for the directional frozen foams after lyophilization via scanning electron microscope (SEM). As a result, these highly organized structures exhibited enhanced mechanical performance properties. Particularly, for the 25% CNF foams, the compression modulus increased 60% compared with the un-directional frozen samples. These nanocellulosics-based foams could absorb up to 10-fold water of their initial weight with excellent water stability when immersed in water for more than 48 h. Overall, this study describes a novel process combining cross-linking and directional freezing which successfully fabricates naturally derived foams with anisotropic structure.

Authors:
 [1];  [1];  [1]; ORCiD logo [2]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Univ. of Tennessee Inst. of Agriculture, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1507844
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Carbohydrate Polymers
Additional Journal Information:
Journal Volume: 213; Journal Issue: C; Journal ID: ISSN 0144-8617
Publisher:
Applied Science Direct
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Cellulose nanofibrils; Cellulose nanocrystals; Cross-linking; Directional freezing; Foams

Citation Formats

Liang, Luna, Huang, Chen, Hao, Naijia, and Ragauskas, Arthur J. Cross-linked poly(methyl vinyl ether-co-maleic acid)/poly(ethylene glycol)/nanocellulosics foams via directional freezing. United States: N. p., 2019. Web. doi:10.1016/j.carbpol.2019.02.073.
Liang, Luna, Huang, Chen, Hao, Naijia, & Ragauskas, Arthur J. Cross-linked poly(methyl vinyl ether-co-maleic acid)/poly(ethylene glycol)/nanocellulosics foams via directional freezing. United States. doi:10.1016/j.carbpol.2019.02.073.
Liang, Luna, Huang, Chen, Hao, Naijia, and Ragauskas, Arthur J. Fri . "Cross-linked poly(methyl vinyl ether-co-maleic acid)/poly(ethylene glycol)/nanocellulosics foams via directional freezing". United States. doi:10.1016/j.carbpol.2019.02.073.
@article{osti_1507844,
title = {Cross-linked poly(methyl vinyl ether-co-maleic acid)/poly(ethylene glycol)/nanocellulosics foams via directional freezing},
author = {Liang, Luna and Huang, Chen and Hao, Naijia and Ragauskas, Arthur J.},
abstractNote = {Aligned micro- and nanoporous materials have gained tremendous interest since they demonstrate great potential in organic electronics, absorbents, biomedicine and tissue engineering. Herein, cellulose nanofibrils (CNFs) and cellulose nanocrystals (CNCs) cross-linked with poly(methyl vinyl ether-co-maleic acid) (PMVEMA) and poly(ethylene glycol) (PEG) foams were prepared by both the directional and un-directional freezing techniques. Aligned three-dimensional porous structures were indicated for the directional frozen foams after lyophilization via scanning electron microscope (SEM). As a result, these highly organized structures exhibited enhanced mechanical performance properties. Particularly, for the 25% CNF foams, the compression modulus increased 60% compared with the un-directional frozen samples. These nanocellulosics-based foams could absorb up to 10-fold water of their initial weight with excellent water stability when immersed in water for more than 48 h. Overall, this study describes a novel process combining cross-linking and directional freezing which successfully fabricates naturally derived foams with anisotropic structure.},
doi = {10.1016/j.carbpol.2019.02.073},
journal = {Carbohydrate Polymers},
number = C,
volume = 213,
place = {United States},
year = {2019},
month = {2}
}

Journal Article:
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This content will become publicly available on February 22, 2020
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