Green procedure for grafting polypeptide onto cellulose nanofibers

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-02-06 DOI:10.1016/j.cej.2025.160349

Farida Baraka, José Ignacio Santos, Mahsa Mousavi Langari, Iván Rivilla, Jalel Labidi

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引用次数: 0

Abstract

This study presents an innovative green method to graft polypeptide onto cellulose nanofibers (CNFs) by polymerizing N-carboxyanhydrides (NCA) using CNFs’ hydroxyl groups present on the surface as initiators. The grafting of NCA onto CNFs was performed using choline chloride: formic acid (ChCl: FA) deep eutectic solvent (DES) as reaction medium. In recent years, DESs show great potential to replace traditional solvents in chemical reactions. Fourier transform infrared spectroscopy (FTIR), cross-polarization magic angle spinning (CP/MAS) ¹³C- nuclear magnetic resonance (NMR), elemental analysis, and X-ray photoelectron spectroscopy (XPS) confirmed the grafting of surfacic CNFs’ hydroxyl groups. The grafting rate gradually increase as function of the reaction time to reach 12.2% after three hours of reaction. Scanning electron microscopy (SEM) showed that modified nanofibers are enveloped and covered polypeptides, resulting in an amorphous, wrinkled rough surface, and folded morphologies. Coupling SEM analysis with energy dispersive X-ray (EDX) of the nanofiber’s surface revealed the presence of nitrogen, which confirms the grafting and the growing of NCA onto CNF. Finally, nanopapers prepared from NCA-grafted CNFs exhibit superior hydrophobicity and mechanical performance as compared to their unmodified analog.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.