A facile and effective “grafting from” method by ROP of N-sulfonyl aziridines toward cellulose-g-polysulfonamides has been developed for efficient oil/water separation. The cellulose paper was initially succinylated to transform the hydroxyl to carboxyl acid groups, which act as the initiating sites for the ring-opening copolymerization of fluorescent 2-methyl-1-dansylaziridine and 2-methyl-1-tosylaziridine (TsMAz) towards the grafted cellulose. Both steps are catalyzed by the same compound, 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene (MTBD). The grafted polysulfonamide ratio was up to 136 wt%, and the surface contact angle up to 147°. A one-pot tandem strategy was applied to produce the grafted cellulose paper with a grafting ratio ranging from 96 to 150 % and a contact angle over 127°. The modified cellulose paper material showed promising properties for efficient oil/water separations.
|Original language||English (US)|
|State||Published - Mar 7 2021|
Bibliographical noteKAUST Repository Item: Exported on 2021-03-29
Acknowledgements: This work was supported by the National Natural Science Foundation of China (21801049) and the start-up funding of Guangdong University of Technology. N.H. acknowledges the support of King Abdullah University of Science and Technology.
ASJC Scopus subject areas
- Materials Chemistry
- Organic Chemistry
- Polymers and Plastics