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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Cellulose Regeneration and Chemical Recycling: Closing the ``Cellulose Gap{''} Using Environmentally Benign Solvents

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Author(s):
El Seoud, Omar A. [1] ; Kostag, Marc [1] ; Jedvert, Kerstin [2] ; Malek, Naved I. [3]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Chem, Prof Lineu Prestes Av 748, BR-05508000 Sao Paulo - Brazil
[2] Res Inst Sweden RISE IVF, Fiber Dev Mat & Prod, Box 104, SE-43122 Molndal - Sweden
[3] Sardar Vallabhbhai Natl Inst Technol, Appl Chem Dept, Surat 395007, Gujarat - India
Total Affiliations: 3
Document type: Review article
Source: MACROMOLECULAR MATERIALS AND ENGINEERING; v. 305, n. 4 FEB 2020.
Web of Science Citations: 10
Abstract

Strategies to mitigate the expected ``cellulose gap{''} include increased use of wood cellulose, fabric reuse, and recycling. Ionic liquids (ILs) are employed for cellulose physical dissolution and shaping in different forms. This review focuses on the regeneration of dissolved cellulose as nanoparticles, membranes, nonwoven materials, and fibers. The solvents employed in these applications include ILs and alkali solutions without and with additives. Cellulose fibers obtained via the carbonate and carbamate processes are included. Chemical recycling (CR) of polycotton (cellulose plus poly(ethylene terephthalate)) is addressed because depending on the recycling approach employed, this process is akin to regeneration. The strategies investigated in CR include preferential dissolution or depolymerization of one component of the blend, and separation of both components using ILs. It is hoped that this review focuses the attention on the potential applications of regenerated cellulose from its solutions and contributes to the important environmental issue of recycling of used materials. (AU)

FAPESP's process: 17/06394-1 - Muti-user equipment approved in grant 2014/22136-4: Isothermal titration calorimeter (ITC) for the determination of thermodynamic parameters of molecular interactions
Grantee:Omar Abou El Seoud
Support Opportunities: Multi-user Equipment Program
FAPESP's process: 14/22136-4 - Use of green solvents and their mixtures for optimizing chemical processes
Grantee:Omar Abou El Seoud
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 16/22869-7 - Novel solvents in cellulose chemistry: Synthesis, properties, and application of quaternaryammonium electrolytes for dissolution, regeneration, and derivatization of cellulose
Grantee:Marc Kostag
Support Opportunities: Scholarships in Brazil - Post-Doctoral