Cellulose Regeneration and Chemical Recycling: Closing the “Cellulose Gap” Using Environmentally Benign Solvents
2020 (English)In: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 305, no 4, article id 1900832Article in journal (Refereed) Published
Abstract [en]
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.
Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2020. Vol. 305, no 4, article id 1900832
Keywords [en]
cellulose blends, cellulose fibers, cellulose nanoparticles, cellulose regeneration, chemical recycling, films, nonwovens, Additives, Blending, Cellulose, Cellulose films, Dissolution, Ethylene, Ionic liquids, Membranes, Nanoparticles, Natural fibers, Recycling, Textile blends, Textile fibers, Cellulose fiber, Non-wovens, Wood, Dissolving, Mixing
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-44792DOI: 10.1002/mame.201900832Scopus ID: 2-s2.0-85083533893OAI: oai:DiVA.org:ri-44792DiVA, id: diva2:1436629
Note
Funding details: Conselho Nacional de Desenvolvimento Cienteico e Tecnologico, CNPq, 307022/2014-5; Funding details: Fundado de Amparo à Pesquisa do Estado de Sao Paulo, FAPESP, 2016/22869-7, 2017/06394-1, 2014/22136-4; Funding details: Svenska Forskningsrådet Formas, 942-2015-388; Funding details: University Grants Commission, UGC; Funding details: UDCSR/MUM/AO/CRS-M-276/2017; Funding text 1: O.A.E.S. and M.K. thank FAPESP (Fundado de Amparo ? Pesquisa do Estado de S?o Paulo) for financial support, grant numbers 2014/22136-4, 2016/22869-7, and 2017/06394-1. O.A.E.S. thanks CNPq for research productivity fellowship (grant number 307022/2014-5). K.J. thanks the Swedish Research Council Formas, grant number 942-2015-388. N.I.M. thanks the Consortium for Scientific Research, University Grants Commission (UGC-DAE) Collaborative Research Scheme, grant number UDCSR/MUM/AO/CRS-M-276/2017.
2020-06-082020-06-082024-01-17Bibliographically approved