Polymer brush-grafted cellulose nanocrystals for the synthesis of porous carbon-coated titania nanocomposites

Cheng, Yen Theng; Xia, Qingbo; Liu, Hongwei; Solomon, Marcello B.; Ling, Chris D.; Müllner, Markus

doi:10.1039/d3py00194f

Cited by 6 publications

(3 citation statements)

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“…158 This acts as a general example for core–shell templating, the likes of which can be found using other core–shell structures, such as filomicelles and MPBs. 267–271 Pathways to controllably access metal nanorings may provide new materials with unique optical and superconducting properties. 272,273 A rather unusual way of using a polymer toroid was recently described by Qiu and co-workers, whereby the toroid acted as a “micellar rubber band” to wrap around an inorganic colloid, generating an intriguing hybrid material that was likened to a colloidal version of “Saturn”.…”

Section: Summary and Potential Future Applicationsmentioning

confidence: 99%

Nanoscale polymer discs, toroids and platelets: a survey of their syntheses and potential applications

Brisson,

Worthington,

Kerai

et al. 2024

Chem. Soc. Rev.

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Section: Summary and Potential Future Applicationsmentioning

confidence: 99%

Nanoscale polymer discs, toroids and platelets: a survey of their syntheses and potential applications

Brisson,

Worthington,

Kerai

et al. 2024

Chem. Soc. Rev.

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“…Polymer brushes [114] with unique properties such as a high charge density, high symmetry or quasi-symmetric structure, and low molecular weight provide great potential and limitless possibilities for its applications in biomedical applications [115][116][117], nanoreactors [118][119][120], durable protective clothing [121,122], etc. The brush conformation is influenced by the curvature of grafted surface.…”

Section: Spherical Polyelectrolyte Brushesmentioning

confidence: 99%

Spherical Polyelectrolyte Brushes as Flocculants and Retention Aids in Wet-End Papermaking

2023

Molecules

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As the criteria of energy conservation, emission reduction, and environmental protection become more important, and with the development of wet-end papermaking, developing excellent retention aids is of great significance. Spherical polyelectrolyte brushes (SPBs) bearing polyelectrolyte chains grafted densely to the surface of core particle have the potential to be novel retention aids in wet-end papermaking not only because of their spherical structure, but also due to controllable grafting density and molecular weight. Such characteristics are crucial in order to design multi-functional retention aids in sophisticated papermaking systems. This review presents some important recent advances with respect to retention aids, including single-component system and dual-component systems. Then, basic theory in papermaking is also briefly reviewed. Based on these advances, it emphatically describes spherical polyelectrolyte brushes, focused on their preparation methods, characterization, conformation, and applications in papermaking. This work is expected to contribute to improve a comprehensive understanding on the composition, properties, and function mechanisms of retention aids, which helps in the further investigation on the design of novel retention aids with excellent performance.

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“…Common CRP methods include NMP [ 6 ], RAFT [ 7 ], and ATRP [ 8 ]. Among these techniques, ATRP technology has been effectively utilized to modify cellulose and its derivatives due to its wide range of monomers and initiators [ 9 , 10 ]. However, the disadvantage of traditional ATRP is that the polymerization process requires transition-metal complexes as catalysts, which are not consumed during the polymerization process and are difficult to purify.…”

Section: Introductionmentioning

confidence: 99%

Photoinduced Metal-Free Atom Transfer Radical Polymerization for the Modification of Cellulose with Poly(N-isopropylacrylamide) to Create Thermo-Responsive Injectable Hydrogels

Liu,

Shen,

Wang

et al. 2024

IJMS

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Photoinduced metal-free ATRP has been successfully applied to fabricate thermo-responsive cellulose graft copolymer (PNIPAM-g-Cell) using 2-bromoisobuturyl bromide-modified cellulose as the macroinitiator. The polymerization of N-isopropylacrylamide (NIPAM) from cellulose was efficiently activated and deactivated with UV irradiation in the presence of an organic-based photo-redox catalyst. Both FTIR and 13C NMR analysis confirmed the structural similarity between the obtained PNIPAM-g-Cell and that synthesized via traditional ATRP methods. When the concentration of the PNIPAM-g-Cell is over 5% in water, it forms an injectable thermos-responsive hydrogel composed of micelles at 37 °C. Since organic photocatalysis is a metal-free ATRP, it overcomes the challenge of transition-metal catalysts remaining in polymer products, making this cellulose-based graft copolymer suitable for biomedical applications. In vitro release studies demonstrated that the hydrogel can continuously release DOX for up to 10 days, and its cytotoxicity indicates that it is highly biocompatible. Based on these findings, this cellulose-based injectable, thermo-responsive drug-loaded hydrogel is suitable for intelligent drug delivery systems.

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Polymer brush-grafted cellulose nanocrystals for the synthesis of porous carbon-coated titania nanocomposites

Abstract: Cellulose nanocrystals (CNCs) are a renewable nanomaterials platform. Their characteristic one-dimensional morphology and surface chemistry offer opportunities for the templated synthesis of functional nanorods and nanotubes. Here we report the...

Cited by 6 publications

References 55 publications

Nanoscale polymer discs, toroids and platelets: a survey of their syntheses and potential applications

Nanoscale polymer discs, toroids and platelets: a survey of their syntheses and potential applications

Spherical Polyelectrolyte Brushes as Flocculants and Retention Aids in Wet-End Papermaking

Photoinduced Metal-Free Atom Transfer Radical Polymerization for the Modification of Cellulose with Poly(N-isopropylacrylamide) to Create Thermo-Responsive Injectable Hydrogels

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