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Stovbun S, Skoblin A, Mikhaleva MG, Vedenkin AS, Gatin AK, Usachev SV, Nikolsky SN, Politenkova GG, Zlenko DV. Role of the Exchange Interactions in the Stability of the Cellulose. Phys Chem Chem Phys 2022; 24:22871-22876. [DOI: 10.1039/d2cp02346f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The problem of the origin of biochirality and the related problem of the initial monomers' selection are still under discussion, and the main point here is not the mechanics of...
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Zlenko DV, Vtyurina DN, Usachev SV, Skoblin AA, Mikhaleva MG, Politenkova GG, Nikolsky SN, Stovbun SV. On the orientation of the chains in the mercerized cellulose. Sci Rep 2021; 11:8765. [PMID: 33888779 PMCID: PMC8062695 DOI: 10.1038/s41598-021-88040-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 04/01/2021] [Indexed: 02/02/2023] Open
Abstract
The cold alkaline treatment or mercerization of cellulose is widely used in industry to enrich the cellulose raw with high-molecular-weight [Formula: see text]-cellulose. Washing out of hemicelluloses by alkalies is accompanied by the rearrangement of the cellulose chains' packing, well known as a transition between cellulose I and cellulose II. Cellulose II can also be produced by the precipitation of the cellulose solutions (regeneration). The currently accepted theory implies that in cellulose II, both mercerized and regenerated, the macromolecules are arranged antiparallelly. However, forming such a structure in the course of the mercerization seems to be significantly hindered, while it seems to be quite possible in the regeneration process. In this work, we discuss the sticking points in the theory on the antiparallel structure of mercerized cellulose from a theoretical point of view summarizing all of the available experimental data in the field.
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Affiliation(s)
- Dmitry V Zlenko
- N.N. Semenov Federal Research Center for Chemical Physics RAS, Moscow, Russia.
- Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia.
| | - Daria N Vtyurina
- N.N. Semenov Federal Research Center for Chemical Physics RAS, Moscow, Russia
| | - Sergey V Usachev
- N.N. Semenov Federal Research Center for Chemical Physics RAS, Moscow, Russia
| | - Aleksey A Skoblin
- N.N. Semenov Federal Research Center for Chemical Physics RAS, Moscow, Russia
| | - Mariya G Mikhaleva
- N.N. Semenov Federal Research Center for Chemical Physics RAS, Moscow, Russia
| | | | - Sergey N Nikolsky
- N.N. Semenov Federal Research Center for Chemical Physics RAS, Moscow, Russia
| | - Sergey V Stovbun
- N.N. Semenov Federal Research Center for Chemical Physics RAS, Moscow, Russia
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Liang Q, Zhang D, Ji P, Sheng N, Zhang M, Wu Z, Chen S, Wang H. High-Strength Superstretchable Helical Bacterial Cellulose Fibers with a "Self-Fiber-Reinforced Structure". ACS APPLIED MATERIALS & INTERFACES 2021; 13:1545-1554. [PMID: 33377390 DOI: 10.1021/acsami.0c19149] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
As a hydrogel membrane grown on the gas-liquid interface by bacterial culture that can be industrialized, bacterial cellulose (BC) cannot give full play to the advantages of its natural nanofibers. Conversion to the properties of nanofibers from high-performance to macrofibers represents a difficult material engineering challenge. Herein, we construct high-strength BC macrofibers with a "self-fiber-reinforced structure" using a dry-wet spinning method by adjusting the BC dissolution and concentration. The macrofiber with a tensile strength of 649 MPa and a strain of 17.2% can be obtained, which is one of the strongest and toughest cellulose fibers. In addition, the macrofiber can be fabricated to a superstretchable helical fiber without adding other elastomers or auxiliary materials. When the helical diameter is 1.6 mm, the ultimate stretch reaches 1240%. Meanwhile, cyclic tests show that the mechanical properties and morphology of the fiber remained stable after 100 times of 100% cyclic stretching. It is exciting that the helical fiber also owns outstanding knittability, washability, scalability, and dyeability. Furthermore, superstretchable functional helical BC fibers can be fabricated by embedding functional materials (carbon materials, conductive polymers, etc.) on BC or in the spinning dope, which can be made to wearable devices such as fiber solid-state supercapacitors. This work provides a scalable way for high-strength superstretchable and multifunctional fibers applied in wearable devices.
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Affiliation(s)
- Qianqian Liang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Dong Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Peng Ji
- Co-Innovation Center for Textile Industry, Donghua University, Shanghai 201620, PR China
| | - Nan Sheng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Minghao Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Zhuotong Wu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Shiyan Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Huaping Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
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Zhurkov's Stress-Driven Fracture as a Driving Force of the Microcrystalline Cellulose Formation. Polymers (Basel) 2020; 12:polym12122952. [PMID: 33322007 PMCID: PMC7763273 DOI: 10.3390/polym12122952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/30/2020] [Accepted: 12/05/2020] [Indexed: 11/17/2022] Open
Abstract
Microcrystalline cellulose (MCC) is a chemically pure product of cellulose mechano-chemical conversion. It is a white powder composed of the short fragments of the plant cells widely used in the modern food industry and pharmaceutics. The acid hydrolysis of the bleached lignin-free cellulose raw is the main and necessary stage of MCC production. For this reason, the acid hydrolysis is generally accepted to be the driving force of the fragmentation of the initial cellulose fibers into MCC particles. However, the low sensibility of the MCC properties to repeating the hydrolysis forces doubting this point of view. The sharp, cleave-looking edges of the MCC particles suggesting the initial cellulose fibers were fractured; hence the hydrolysis made them brittle. Zhurkov showed that mechanical stress decreases the activation energy of the polymer fracture, which correlates with the elevated enthalpy of the MCC thermal destruction compared to the initial cellulose.
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Wekwejt M, Michalska-Sionkowska M, Bartmański M, Nadolska M, Łukowicz K, Pałubicka A, Osyczka AM, Zieliński A. Influence of several biodegradable components added to pure and nanosilver-doped PMMA bone cements on its biological and mechanical properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111286. [PMID: 32919647 DOI: 10.1016/j.msec.2020.111286] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 07/09/2020] [Accepted: 07/21/2020] [Indexed: 01/11/2023]
Abstract
Acrylic bone cements (BC) are wildly used in medicine. Despite favorable mechanical properties, processability and inject capability, BC lack bioactivity. To overcome this, we investigated the effects of selected biodegradable additives to create a partially-degradable BC and also we evaluated its combination with nanosilver (AgNp). We hypothesized that using above strategies it would be possible to obtain bioactive BC. The Cemex was used as the base material, modified at 2.5, 5 or 10 wt% with either cellulose, chitosan, magnesium, polydioxanone or tricalcium-phosphate. The resulted modified BC was examined for surface morphology, wettability, porosity, mechanical and nanomechanical properties and cytocompatibility. The composite BC doped with AgNp was also examined for its release and antibacterial properties. The results showed that it is possible to create modified cement and all studied modifiers increased its porosity. Applying the additives slightly decreased BC wettability and mechanical properties, but the positive effect of the additives was observed in nanomechanical research. The relatively poor cytocompatibility of modified BC was attributed to the unreacted monomer release, except for polydioxanone modification which increased cells viability. Furthermore, all additives facilitated AgNp release and increased BC antibacterial effectiveness. Our present studies suggest the optimal content of biodegradable component for BC is 5 wt%. At this content, an improvement in BC porosity is achieved without significant deterioration of BC physical and mechanical properties. Polydioxanone and cellulose seem to be the most promising additives that improve porosity and antibacterial properties of antibiotic or nanosilver-loaded BC. Partially-degradable BC may be a good strategy to improve their antibacterial effectiveness, but some caution is still required regarding their cytocompatibility. STATEMENT OF SIGNIFICANCE: The lack of bone cement bioactivity is the main limitation of its effectiveness in medicine. To overcome this, we have created composite cements with partially-degradable properties. We also modified these cements with nanosilver to provide antibacterial properties. We examined five various additives at three different contents to modify a selected bone cement. Our results broaden the knowledge about potential modifiers and properties of composite cements. We selected the optimal content and the most promising additives, and showed that the combination of these additives with nanosilver would increase cements` antibacterial effectiveness. Such modified cements may be a new solution for medical applications.
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Affiliation(s)
- M Wekwejt
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, Gdańsk, Poland.
| | - M Michalska-Sionkowska
- Faculty of Biological and Veterinary Sciences, Department of Environmental Microbiology and Biotechnology, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - M Bartmański
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, Gdańsk, Poland
| | - M Nadolska
- Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Gdańsk, Poland
| | - K Łukowicz
- Institute of Zoology and Biomedical Research, Department of Biology and Cell Imaging, Faculty of Biology, Jagiellonian University, Kraków, Poland
| | - A Pałubicka
- Department of Surgical Oncologic, Medical University of Gdańsk, Gdańsk, Poland; Department of Laboratory Diagnostics and Microbiology with Blood Bank, Specialist Hospital in Kościerzyna, Kościerzyna, Poland
| | - A M Osyczka
- Institute of Zoology and Biomedical Research, Department of Biology and Cell Imaging, Faculty of Biology, Jagiellonian University, Kraków, Poland
| | - A Zieliński
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, Gdańsk, Poland
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