Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 5, Pages 2923-2927Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b12300
Keywords
cellulose nanofibrils; films; thermoresponsive polyniers; surface modification; membranes; poly(N-isopropylacrylamide)
Funding
- European Community's Seventh Framework Programme (FP7) [280519]
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This letter proposes a strategy to construct tunable films combining the physical characteristics of cellulose nanofibrils and smart polymers for membrane applications. A functional membrane template was obtained by first fabricating a water stable film from cellulose nanofibrils and subsequently surface grafting it with a thermoresponsive polymer, poly(N-isopropylacrylamide). The behavior of the membrane template was dependent on temperature. The increment in slope of relative water permeance around the lower critical solution temperature of poly(N-isopropylacrylamide) increased from 18 to 100% upon polymer attachment. Although the membrane template essentially consisted of wood-based materials, the benefits of smart synthetic polymers were achieved.
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