Journal
CELLULOSE
Volume 24, Issue 10, Pages 4189-4203Publisher
SPRINGER
DOI: 10.1007/s10570-017-1414-7
Keywords
Cellulose nanocrystals; AFM; LCST; Three-dimensional morphology; ATRP
Funding
- Basic and Frontier Technology Research of Henan Province, China [162300410202]
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We report a series of thermoresponsive cellulose nanocrystals (CNCs) decorated with poly(poly(ethylene glycol) methylacrylate) copolymers (poly(PEGMA)-g-CNCs) synthesized by surface initiated-atom transfer radical polymerization (SI-ATRP). The chemical structures and surface morphologies were subsequently confirmed by FT-IR, XPS, and AFM measurements. With regard to thermally responsive behavior, poly(PEGMA)-g-CNCs show tunable lower critical solution temperature (LCST) values in the range of 34-66 degrees C by varying the feeding ratios of comonomers. The reversible morphological transformation from individual nano-rod structures to larger globule aggregates was further verified by AFM during the LCST transition. These functionalized CNCs have potential as smart film filters and biosensors.
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