SI-ATRP grafting of polymers from polydopamine-modified cellulose nanocrystals

HOU, Yelin; ZHANG, Zhen; HARRISSON, Simon; SÈBE, Gilles

doi:10.1016/j.carbpol.2024.122346

HOU, Yelin
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 2 LCPO : Biopolymers & Bio-sourced Polymers

ZHANG, Zhen
South China Normal University [Guangdong, China] = Université normale de Chine du Sud [Canton, Chine] = 華南師范大學 [SCNU]

HARRISSON, Simon

Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering

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Article de revue

Ce document a été publié dans

Carbohydrate Polymers. 2024-10-01, vol. 341, p. 122346

Résumé en anglais

This work reports on the possibility of using polydopamine (PDA) as a tool to immobilize bromoisobutyryl moieties at the surface of cellulose nanocrystals (CNCs) and initiate Surface Intitiated Atom Transfer Radical Polymerization (SI-ATRP) reactions from these sites. Two different strategies based on i) the stepwise modification of the CNCs with dopamine (DA) and α-bromoisobutyryl bromide (BiBB) (Protocol 1) and ii) the one-step treatment of the CNCs with a mixture of DA and BiBB-modified DA (Protocol 2), were compared. Only the CNC particles treated according to Protocol 1 guaranteed efficient anchoring of the SI-ATRP initiating sites in our experimental conditions (with limited impact on the CNCs crystalline structure), the coated layer being leached out by certain solvents in the case of Protocol 2. The brominated particles displaying the best performances were subsequently tested as potential ATRP macroinitiators, using methyl methacrylate (MMA) and styrene (St) as model monomers. Polymer-grafted particles were successfully obtained, with a grafting density twice as high for Sty as for MMA, demonstrating the validity of this strategy.< Réduire

Mots clés en anglais

Cellulose nanocrystals

Polydopamine

SI-ATRP

Polymethyl methacrylate

Polystyrene

URI

https://oskar-bordeaux.fr/handle/20.500.12278/204397

DOI

http://dx.doi.org/10.1016/j.carbpol.2024.122346

Unités de recherche

Laboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629

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