Jump to main content
Jump to site search

Issue 13, 2018
Previous Article Next Article

Polymer brush guided templating on well-defined rod-like cellulose nanocrystals

Author affiliations

Abstract

Cellulose is a natural biomaterial harvested from regrowing resources and it is one of the most attractive components for the construction of functional materials with low adverse ecological impact. Among various nanocelluloses, cellulose nanocrystals (CNC) are rod-like nanoparticles whose high crystallinity and stiffness make them viable candidates for templating materials. We report here on CNC-based polymer brushes used as templates for the synthesis of porous inorganic nanorods with tunable diameters and aspect ratios. The CNC were modified with initiation sites for surface-initiated polymerisation (SI-ATRP) to act as a backbone for the grafting of poly(2-(dimethyl amino)ethyl methacrylate) (PDMAEMA) brushes. Controlled polymerisation conditions allowed for adjusting the brush length and consequently the morphology of the hybrid nanomaterials. The PDMAEMA brush served as coordination and nucleation sites for the mineralisation of tetramethyl orthosilicate (TMOS) into SiO2@CNC-g-PDMAEMA hybrids. After calcination, microscopy and N2-sorption measurements revealed hollow silica nanorods with accessible micro- and meso-pores. We foresee that this strategy can be adapted to other nanocelluloses to create high-aspect ratio porous silica nanotubes, or to achieve uniform depositions in the mineralisation of other inorganic metals or metal oxide compounds.

Graphical abstract: Polymer brush guided templating on well-defined rod-like cellulose nanocrystals

Back to tab navigation

Supplementary files

Article information


Submitted
30 Oct 2017
Accepted
11 Nov 2017
First published
24 Nov 2017

Polym. Chem., 2018,9, 1650-1657
Article type
Paper

Polymer brush guided templating on well-defined rod-like cellulose nanocrystals

M. Morits, V. Hynninen, Nonappa, A. Niederberger, O. Ikkala, A. H. Gröschel and M. Müllner, Polym. Chem., 2018, 9, 1650
DOI: 10.1039/C7PY01814B

Social activity

Search articles by author

Spotlight

Advertisements