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Polymers
Special Issues
Advances in Natural Cellulose
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Advances in Natural Cellulose

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biomacromolecules, Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: closed (15 April 2024) | Viewed by 1931

Special Issue Editors

Dr. Aleksey Bychkov

E-Mail Website
Guest Editor
Laboratory of Mechanochemistry, Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze 18, 630090 Novosibirsk, Russia
Interests: cellulose; ultrastructure; amorphization; mechanochemistry; hydrolysis
Special Issues, Collections and Topics in MDPI journals
Dr. Ekaterina Podgorbunskikh

E-Mail Website
Guest Editor
Laboratory of Mechanochemistry, Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze 18, 630090 Novosibirsk, Russia
Interests: cellulose; lignocellulosic waste; crystal structure; amorphization; recrystallization; mechanochemistry; enzymatic hydrolysis

Special Issue Information

Dear Colleagues,

This Special Issue intends to provide a platform for discussion about the latest trends and advances in the field of the production and modification of cellulosic materials. Researchers from academia and industry are invited to submit articles and reviews covering (but not limited to) topics related to research on natural cellulose fibers, the production and modification of natural cellulose, composites of natural cellulose and other polymers (natural and synthetic),and the characterization of cellulose and cellulose-based composites (physical, chemical, mechanical, structural properties):

  1. Innovations in the production of cellulose from natural sources (especially from non-traditional plant materials);
  2. The influence of the production method on the properties of cellulose;
  3. The influence of cellulose structure on the properties of cellulose materials;
  4. Physical and chemical methods of controlling the properties of cellulose;
  5. The amorphization and recrystallization of cellulose;
  6. Polymorphic modifications of cellulose;
  7. Composites of cellulose with other polymers (natural and synthetic);
  8. The comparison of the properties of cellulose with other natural polysaccharides.

Dr. Aleksey Bychkov
Dr. Ekaterina Podgorbunskikh
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cellulose
  • ultrastructure
  • modification
  • composites
  • amorphization
  • recrystallisation
  • polymorphism

Published Papers (2 papers)

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Research

21 pages, 3331 KiB  
Article
Recrystallization of Cellulose, Chitin and Starch in Their Individual and Native Forms
by Ekaterina Podgorbunskikh, Timofei Kuskov, Vladimir Bukhtoyarov, Oleg Lomovsky and Aleksey Bychkov
Polymers 2024, 16(7), 980; https://doi.org/10.3390/polym16070980 - 03 Apr 2024
Viewed by 470
Abstract
Semi-crystalline natural polymers are involved in many technological processes. Biopolymers having identical chemical compositions can differ in reactivity in heterogeneous transformations depending on their crystal structure (polymorphic modification). This paper compares the crystal structure recrystallization processes occurring in natural polysaccharides (cellulose, chitin, and [...] Read more.
Semi-crystalline natural polymers are involved in many technological processes. Biopolymers having identical chemical compositions can differ in reactivity in heterogeneous transformations depending on their crystal structure (polymorphic modification). This paper compares the crystal structure recrystallization processes occurring in natural polysaccharides (cellulose, chitin, and starch) in the individual form and as a component of native biomass. Aqueous treatment of pre-amorphized semi-crystalline biopolymers was shown to result in swelling, thus alleviating the kinetic restrictions imposed on the restoration of crystalline regions and phase transition to the thermodynamically more stable polymorphic modification. During recrystallization, cellulose I in the individual form and within plant-based biomass undergoes a transition to the more stable cellulose II. A similar situation was demonstrated for α- and β-chitin, which recrystallize only into the α-polymorphic modification in the case of both individual polymers and native materials. Recrystallization of A-, B-, and C-type starch, both in the individual form and within plant-based flour, during aqueous treatment, results in a phase transition, predominantly to the B-type starch. The recrystallization process depends on the temperature of aqueous treatment; longer treatment duration has almost no effect on the recrystallization degree of polymers, both in the individual form and within native materials. Full article
(This article belongs to the Special Issue Advances in Natural Cellulose)
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25 pages, 4751 KiB  
Article
Cellulose Functionalization Using N-Heterocyclic-Based Leaving Group Chemistry
by Arvind Negi and Ali R. Tehrani-Bagha
Polymers 2024, 16(1), 149; https://doi.org/10.3390/polym16010149 - 03 Jan 2024
Viewed by 1016
Abstract
There has been continuous interest in developing novel activators that facilitate the functionalization of cellulosic materials. In this paper, we developed a strategy in which trisubstituted triazinium salts act as cellulose preactivators. As leaving groups, these triazinium salts utilize N-heterocycles (pyridine, imidazole, [...] Read more.
There has been continuous interest in developing novel activators that facilitate the functionalization of cellulosic materials. In this paper, we developed a strategy in which trisubstituted triazinium salts act as cellulose preactivators. As leaving groups, these triazinium salts utilize N-heterocycles (pyridine, imidazole, and nicotinic acid). Initially, we optimized the synthetic route for developing these novel cellulose preactivators (triazinium salts), whose structures were confirmed using NMR spectroscopy. The surface zeta potential of cellulose changed from a negative value to a positive one after preactivation due to the cationic nature of these preactivators. To enhance the scope of the study, we functionalized the cellulose-preactivated materials with a series of amine- or hydroxy-containing aliphatic and aromatic hydrocarbons, nucleophilic amino acids (cysteine), colorants (2-aminoanthraquinone and 2-amino-3-methyl-anthraquinone), and biopolymer (zein protein). The treated samples were analyzed using FTIR, time-gated Raman spectroscopy, and reflection spectroscopy, and the success of the functionalization process was validated. To widen the scope of such chemistries, we synthesized four reactive agents containing N-heterocyclic-based leaving groups (pyridine and nicotinic acid) and successfully functionalized cellulose with them in one step. The proposed single- and two-step functionalization approaches will provide opportunities for chemically linking various chemical compounds to cellulose for different applications. Full article
(This article belongs to the Special Issue Advances in Natural Cellulose)
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