1
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Fan P, Geng L, Wang Z, Jiang K, Fang W, Zhang Y. Friction Properties of Crystalline Cellulose Sliding on Chromium under Water Lubrication Based on Molecular Dynamics Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13050-13057. [PMID: 37672641 DOI: 10.1021/acs.langmuir.3c01352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
This work studies the friction and wear behaviors of chromium (hard material) and crystalline cellulose (soft material) under water lubrication considering the loading and sliding velocity on friction force, temperature of contact interfaces, and worn atoms from the atomic view. The change of friction force with sliding velocity is greater than that with loading, and it is easier to obtain a stable friction at high velocity. The average friction force in the stabilization gradually increases with loading and velocity, and the growth rate decreases with loading, while it increases with velocity. The temperature of contact interfaces at the beginning of sliding changes rapidly and gradually becomes stable. The temperature at the stabilization increases distinctly with velocity, while it does not change much with loading. Both the loading and sliding velocity have an important influence on the wear of soft material; it is noticed that the amount of worn atoms increases close to exponentially with velocity and linearly with loading. However, the wear of hard material changes less with increasing loading and sliding velocity.
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Affiliation(s)
- Pengwei Fan
- Collage of Mechanical and Electrical Engineering, Tarim University, Alar, Xinjiang 843300, People's Republic of China
- Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Alar, Xinjiang 843300, People's Republic of China
| | - Liuyuan Geng
- Collage of Mechanical and Electrical Engineering, Tarim University, Alar, Xinjiang 843300, People's Republic of China
- Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Alar, Xinjiang 843300, People's Republic of China
| | - Zhili Wang
- College of Humanities, Tarim University, Alar, Xinjiang 843300, People's Republic of China
| | - Kaixiang Jiang
- Collage of Mechanical and Electrical Engineering, Tarim University, Alar, Xinjiang 843300, People's Republic of China
- Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Alar, Xinjiang 843300, People's Republic of China
| | - Wenjuan Fang
- Collage of Mechanical and Electrical Engineering, Tarim University, Alar, Xinjiang 843300, People's Republic of China
- Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Alar, Xinjiang 843300, People's Republic of China
| | - Youqiang Zhang
- Collage of Mechanical and Electrical Engineering, Tarim University, Alar, Xinjiang 843300, People's Republic of China
- Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Alar, Xinjiang 843300, People's Republic of China
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2
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Österberg M, Henn KA, Farooq M, Valle-Delgado JJ. Biobased Nanomaterials─The Role of Interfacial Interactions for Advanced Materials. Chem Rev 2023; 123:2200-2241. [PMID: 36720130 PMCID: PMC9999428 DOI: 10.1021/acs.chemrev.2c00492] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This review presents recent advances regarding biomass-based nanomaterials, focusing on their surface interactions. Plant biomass-based nanoparticles, like nanocellulose and lignin from industry side streams, hold great potential for the development of lightweight, functional, biodegradable, or recyclable material solutions for a sustainable circular bioeconomy. However, to obtain optimal properties of the nanoparticles and materials made thereof, it is crucial to control the interactions both during particle production and in applications. Herein we focus on the current understanding of these interactions. Solvent interactions during particle formation and production, as well as interactions with water, polymers, cells and other components in applications, are addressed. We concentrate on cellulose and lignin nanomaterials and their combination. We demonstrate how the surface chemistry of the nanomaterials affects these interactions and how excellent performance is only achieved when the interactions are controlled. We furthermore introduce suitable methods for probing interactions with nanomaterials, describe their advantages and challenges, and introduce some less commonly used methods and discuss their possible applications to gain a deeper understanding of the interfacial chemistry of biobased nanomaterials. Finally, some gaps in current understanding and interesting emerging research lines are identified.
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Affiliation(s)
- Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, 02150Espoo, Finland
| | - K Alexander Henn
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, 02150Espoo, Finland
| | - Muhammad Farooq
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, 02150Espoo, Finland
| | - Juan José Valle-Delgado
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, 02150Espoo, Finland
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3
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Voisin H, Vasse A, Bonnin E, Capron I. Influence of Low-Molar-Mass Xyloglucans on the Rheological Behavior of Concentrated Cellulose Nanocrystal Suspensions. Biomacromolecules 2023; 24:358-366. [PMID: 36525635 DOI: 10.1021/acs.biomac.2c01172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Hydrogels were prepared at high solid contents (70-100 g/L) with cellulose nanocrystals (CNC) and very short xyloglucans (XGs). At 70 g/L, CNCs form cholesteric liquid crystals regularly spaced by a distance of 30 nm. This structure was preserved after adsorption of XG with a molar mass (Mw) of 20,000 g/mol (XG20) but was lost at 40,000 g/mol (XG40). Rheological measurements discriminated domains where an increasing Mw from XG20 to XG40 gave rise to drastic changes in storage moduli (on 3 orders of magnitude). At 40,000 g/mol, transient systems were obtained and a re-entrant glass-gel-glass transition was observed with increasing XG concentrations. This was interpreted in terms of the length and stiffness of the chain in relation to the inter-CNC distance. Liquid-to-glass-to-gel transitions were attributed to an XG adsorption type according to train or trail conformations or interconnected structures. Such tunable properties may further have implications on the in vivo role of XG during cell wall extension.
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4
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Chakraborty I, Rongpipi S, Govindaraju I, B R, Mal SS, Gomez EW, Gomez ED, Kalita RD, Nath Y, Mazumder N. An insight into microscopy and analytical techniques for morphological, structural, chemical, and thermal characterization of cellulose. Microsc Res Tech 2022; 85:1990-2015. [PMID: 35040538 DOI: 10.1002/jemt.24057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 12/30/2021] [Accepted: 12/30/2021] [Indexed: 11/07/2022]
Abstract
Cellulose obtained from plants is a bio-polysaccharide and the most abundant organic polymer on earth that has immense household and industrial applications. Hence, the characterization of cellulose is important for determining its appropriate applications. In this article, we review the characterization of cellulose morphology, surface topography using microscopic techniques including optical microscopy, transmission electron microscopy, scanning electron microscopy, and atomic force microscopy. Other physicochemical characteristics like crystallinity, chemical composition, and thermal properties are studied using techniques including X-ray diffraction, Fourier transform infrared, Raman spectroscopy, nuclear magnetic resonance, differential scanning calorimetry, and thermogravimetric analysis. This review may contribute to the development of using cellulose as a low-cost raw material with anticipated physicochemical properties. HIGHLIGHTS: Morphology and surface topography of cellulose structure is characterized using microscopy techniques including optical microscopy, transmission electron microscopy, scanning electron microscopy, and atomic force microscopy. Analytical techniques used for physicochemical characterization of cellulose include X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, nuclear magnetic resonance spectroscopy, differential scanning calorimetry, and thermogravimetric analysis.
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Affiliation(s)
- Ishita Chakraborty
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Sintu Rongpipi
- Department of Chemical Engineering, The Pennsylvania State University, State College, Pennsylvania, USA
| | - Indira Govindaraju
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Rakesh B
- Department of Life Science, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India
| | - Sib Sankar Mal
- Department of Chemistry, National Institute of Technology, Mangaluru, Karnataka, 575025, India
| | - Esther W Gomez
- Department of Chemical Engineering, The Pennsylvania State University, State College, Pennsylvania, USA
- Department of Biomedical Engineering, The Pennsylvania State University, State College, Pennsylvania, USA
| | - Enrique D Gomez
- Department of Chemical Engineering, The Pennsylvania State University, State College, Pennsylvania, USA
- Department of Materials Science and Engineering, The Pennsylvania State University, State College, Pennsylvania, USA
- Materials Research Institute, The Pennsylvania State University, State College, Pennsylvania, USA
| | - Ranjan Dutta Kalita
- Department of Biotechnology, Royal Global University, Guwahati, Assam, 781035, India
| | - Yuthika Nath
- Department of Serology, State Forensic Science Laboratory, Guwahati, India
| | - Nirmal Mazumder
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
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5
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Moazzami Gudarzi M, Aboutalebi SH. Self-consistent dielectric functions of materials: Toward accurate computation of Casimir-van der Waals forces. SCIENCE ADVANCES 2021; 7:7/22/eabg2272. [PMID: 34039608 PMCID: PMC8153719 DOI: 10.1126/sciadv.abg2272] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
Research on theoretical calculation of Casimir-van der Waals (vdW) forces is characterized by a great number of inconsistencies and conflicting reports with widely differing results for many known materials, including water, contradicting experimental measurements. Despite its importance for conceptual advances in both fundamental aspects and practical applications, a universal framework for the accurate determination of Casimir-vdW forces is lacking. Here, we propose a universal theoretical platform for computing Casimir-vdW forces, accounting for the electronic dielectric constant, optical bandgap, density, and chemical composition. Using this methodology, we determine the dielectric function for 55 materials, over a wide range of photon energies, covering an extensive list of common metals, organic and inorganic semiconductors, and insulators. Internal consistency of the compiled data is validated using optical sum rules and Kramers-Kronig relations. We demonstrate that the calculated vdW forces based on these data match remarkably well with the experimentally measured vdW forces.
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Affiliation(s)
| | - Seyed Hamed Aboutalebi
- Condensed Matter National Laboratory, Institute for Research in Fundamental Sciences, Tehran 19395-5531, Iran.
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6
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Kishani S, Benselfelt T, Wågberg L, Wohlert J. Entropy drives the adsorption of xyloglucan to cellulose surfaces - A molecular dynamics study. J Colloid Interface Sci 2021; 588:485-493. [PMID: 33429345 DOI: 10.1016/j.jcis.2020.12.113] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/21/2020] [Accepted: 12/28/2020] [Indexed: 11/27/2022]
Abstract
The adsorption of nonionic polymers to cellulose is of large importance both in the plant cell wall during synthesis and for the development of sustainable materials from wood. Here, the thermodynamics of adsorption of the polysaccharide xyloglucan (XG) to both native and chemically modified cellulose with carboxyl groups was investigated using molecular dynamics simulations. The free energy of adsorption was calculated as the potential of mean force between an XG oligomer and model cellulose surfaces in a range of temperatures from 298 K to 360 K. It was found that the adsorption near room temperature is an endothermic process dominated by the entropy of released interfacial water molecules. This was corroborated by quantitative assessment of the absolute entropy per water molecule both at the interface and in the bulk. In the case of native cellulose, the adsorption became exothermic at higher temperatures, while the relatively strong interactions between water and the charged groups of the oxidized cellulose impede such a transition. The results also indicate that the extraction of strongly associated hemicelluloses would be facilitated by low temperature.
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Affiliation(s)
- Saina Kishani
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, SE-10044, Sweden; Wallenberg Wood Science Center, KTH Royal Institute of Technology, SE-10044, Sweden
| | - Tobias Benselfelt
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, SE-10044, Sweden; Wallenberg Wood Science Center, KTH Royal Institute of Technology, SE-10044, Sweden
| | - Lars Wågberg
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, SE-10044, Sweden; Wallenberg Wood Science Center, KTH Royal Institute of Technology, SE-10044, Sweden
| | - Jakob Wohlert
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, SE-10044, Sweden; Wallenberg Wood Science Center, KTH Royal Institute of Technology, SE-10044, Sweden.
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7
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Palasingh C, Ström A, Amer H, Nypelö T. Oxidized xylan additive for nanocellulose films - A swelling modifier. Int J Biol Macromol 2021; 180:753-759. [PMID: 33727189 DOI: 10.1016/j.ijbiomac.2021.03.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 03/05/2021] [Accepted: 03/12/2021] [Indexed: 12/16/2022]
Abstract
Polymeric wood hemicelluloses are depicted to join cellulose, starch and chitosan as key polysaccharides for sustainable materials engineering. However, the approaches to incorporate hemicelluloses in emerging bio-based products are challenged by lack of specific benefit, other than the biomass-origin, although their utilization would contribute to sustainable material use since they currently are a side stream that is not valorized. Here we demonstrate wood-xylans as swelling modifiers for neutral and charged nanocellulose films that have already entered the sustainable packaging applications, however, suffer from humidity sensitivity. The oxidative modification is used to modulate the water-solubility of xylan and hence enable adsorption in an aqueous environment. A high molecular weight grade, hence less water-soluble, adsorbed preferentially on the neutral surface while the adsorbed amount on a negatively charged surface was independent of the molecular weight, and hence, solubility. The adsorption of the oxidized xylans on a neutral cellulose surface resulted in an increase in the amount of water in the film while on the negatively charged cellulose the total amount of water decreased. The finding of synergy of two hygroscopic materials to decrease swelling in hydrophilic bio-polymer films demonstrates the oxidized macromolecule xylan as structurally functional component in emerging cellulose products.
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Affiliation(s)
- Chonnipa Palasingh
- Applied Chemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Gothenburg, Sweden
| | - Anna Ström
- Applied Chemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Gothenburg, Sweden
| | - Hassan Amer
- Institute of Chemistry of Renewable Resources, Department of Chemistry, University of Natural Resources and Life Sciences, Tulln, Konrad-Lorenz Straße 24, 3430 Tulln, Austria; Department of Natural and Microbial Products Chemistry, National Research Centre, 33 AlBohous St., Dokki, Giza, Egypt
| | - Tiina Nypelö
- Applied Chemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Gothenburg, Sweden; Wallenberg Wood Science Center, Chalmers University of Technology, Gothenburg, Sweden.
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8
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Talantikite M, Stimpson TC, Gourlay A, Le-Gall S, Moreau C, Cranston ED, Moran-Mirabal JM, Cathala B. Bioinspired Thermoresponsive Xyloglucan-Cellulose Nanocrystal Hydrogels. Biomacromolecules 2020; 22:743-753. [PMID: 33332094 DOI: 10.1021/acs.biomac.0c01521] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Thermoresponsive hydrogels present unique properties, such as tunable mechanical performance or changes in volume, which make them attractive for applications including wound healing dressings, drug delivery vehicles, and implants, among others. This work reports the implementation of bioinspired thermoresponsive hydrogels composed of xyloglucan (XG) and cellulose nanocrystals (CNCs). Starting from tamarind seed XG (XGt), thermoresponsive XG was obtained by enzymatic degalactosylation (DG-XG), which reduced the galactose residue content by ∼50% and imparted a reversible thermal transition. XG with native composition and comparable molar mass to DG-XG was produced by an ultrasonication treatment (XGu) for a direct comparison of behavior. The hydrogels were prepared by simple mixing of DG-XG or XGu with CNCs in water. Phase diagrams were established to identify the ratios of DG-XG or XGu to CNCs that yielded a viscous liquid, a phase-separated mixture, a simple gel, or a thermoresponsive gel. Gelation occurred at a DG-XG or XGu to CNC ratio higher than that needed for the full surface coverage of CNCs and required relatively high overall concentrations of both components (tested concentrations up to 20 g/L XG and 30 g/L CNCs). This is likely a result of the increase in effective hydrodynamic volume of CNCs due to the formation of XG-CNC complexes. Investigation of the adsorption behavior indicated that DG-XG formed a more rigid layer on CNCs compared to XGu. Rheological properties of the hydrogels were characterized, and a reversible thermal transition was found for DG-XG/CNC gels at 35 °C. This thermoresponsive behavior provides opportunities to apply this system widely, especially in the biomedical field, where the mechanical properties could be further tuned by adjusting the CNC content.
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Affiliation(s)
| | - Taylor C Stimpson
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L7, Canada
| | | | | | | | - Emily D Cranston
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L7, Canada.,Department of Wood Science, The University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada.,Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - Jose M Moran-Mirabal
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
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9
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Doineau E, Bauer G, Ensenlaz L, Novales B, Sillard C, Bénézet JC, Bras J, Cathala B, Le Moigne N. Adsorption of xyloglucan and cellulose nanocrystals on natural fibres for the creation of hierarchically structured fibres. Carbohydr Polym 2020; 248:116713. [PMID: 32919547 DOI: 10.1016/j.carbpol.2020.116713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 06/11/2020] [Accepted: 06/30/2020] [Indexed: 10/23/2022]
Abstract
Green treatment of natural fibres is a major issue in paper, textile and biocomposites industries to design innovative and eco-friendly products. In this work, hierarchical structuring of flax woven fabrics by the adsorption of xyloglucan (XG) and cellulose nanocrystals (CNC) is studied. Indeed, CNC have high mechanical properties, high specific surface area and great potential for functionalization. The adsorption of XG and CNC has been investigated in terms of localization by confocal and scanning electron microscopy (SEM) and quantification through adsorption isotherms. Adhesion force measurements have also been performed by Atomic Force Microscopy (AFM). XG and CNC are homogeneously adsorbed on flax fabric and adsorption isotherms reach plateau values around 20 mg /gfibres for both. The pre-adsorption of XG on flax fabric influences the amount of adsorbed CNC in the high concentrations and also creates entanglements and strong interactions between XG and CNC with the formation of an extensible network.
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Affiliation(s)
- Estelle Doineau
- Polymers Composites and Hybrids (PCH), IMT Mines Ales, Ales, France; Univ. Grenoble Alpes, CNRS, Grenoble INP(2), LGP2, F-38000 Grenoble, France; INRAE, UR BIA, F-44316, Nantes, France.
| | | | - Léo Ensenlaz
- Univ. Grenoble Alpes, CNRS, Grenoble INP(2), LGP2, F-38000 Grenoble, France
| | - Bruno Novales
- INRAE, UR BIA, F-44316, Nantes, France; INRAE, BIBS Facility, F-44316 Nantes, France
| | - Cécile Sillard
- Univ. Grenoble Alpes, CNRS, Grenoble INP(2), LGP2, F-38000 Grenoble, France
| | | | - Julien Bras
- Univ. Grenoble Alpes, CNRS, Grenoble INP(2), LGP2, F-38000 Grenoble, France
| | | | - Nicolas Le Moigne
- Polymers Composites and Hybrids (PCH), IMT Mines Ales, Ales, France.
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10
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Liamas E, Connell SD, Ramakrishna SN, Sarkar A. Probing the frictional properties of soft materials at the nanoscale. NANOSCALE 2020; 12:2292-2308. [PMID: 31951242 DOI: 10.1039/c9nr07084b] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The understanding of friction in soft materials is of increasing importance due to the demands of industries such as healthcare, biomedical, food and personal care, the incorporation of soft materials into technology, and in the study of interacting biological interfaces. Many of these processes occur at the nanoscale, but even at micrometer length scales there are fundamental aspects of tribology that remain poorly understood. With the advent of Friction Force Microscopy (FFM), there have been many fundamental insights into tribological phenomena at the atomic scale, such as 'stick-slip' and 'super-lubricity'. This review examines the growing field of soft tribology, the experimental aspects of FFM and its underlying theory. Moving to the nanoscale changes the contact mechanics which govern adhesive forces, which in turn play a pivotal role in friction, along with the deformation of the soft interface and dissipative phenomena. We examine recent progress and future prospects in soft nanotribology.
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Affiliation(s)
- Evangelos Liamas
- Food Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds, UK.
| | - Simon D Connell
- Molecular and Nanoscale Physics Group, School of Physics and Astronomy, University of Leeds, UK
| | | | - Anwesha Sarkar
- Food Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds, UK.
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11
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Lai Y, Zhang H, Sugano Y, Xie H, Kallio P. Correlation of Surface Morphology and Interfacial Adhesive Behavior between Cellulose Surfaces: Quantitative Measurements in Peak-Force Mode with the Colloidal Probe Technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:7312-7321. [PMID: 31063691 PMCID: PMC6777372 DOI: 10.1021/acs.langmuir.8b03503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A better understanding of cellulose-cellulose interactions is needed in applications such as paper making and all-cellulose composites. To date, cellulose-cellulose studies have been chemistry-oriented. In these studies, the sample surfaces have been modified with different chemicals and then tested under an atomic force microscope (AFM) using a colloidal probe (CP). Studies of cellulose-cellulose interaction based on sample morphology and mechanical properties have been rare as a result of the complex surface structure and the soft texture of the cellulose. The current surface interaction models, such as the Johnson-Kendall-Roberts (JKR) model in which the studied bodies are assumed to have smooth surfaces, can no longer fully reveal the interfacial behavior between two cellulose surfaces. Therefore, we propose a new type of contact model for rough-rough interaction by dividing the surface contacts into primary and secondary levels. The main idea of the new model is to take into account local individual contact details between rough surfaces. The model considers the effect of the surface topography by including the asperities and valleys on a cellulose sphere used as the colloidal probe in imaging the topography of a cellulose membrane (CM). In addition, the correlation between the surface morphology and adhesion is studied. To verify the importance of including the effect of the surface roughness in contact analysis and validate our hypothesis on the correlation between the surface morphology and adhesion, an extensive set of experiments was performed. In the experiments, a combination of the AFM peak-force mode (PFM) and the CP technique was employed to acquire a massive amount of information on cellulose-cellulose interactions by measuring the adhesion among six CSs of different sizes and a CM.
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Affiliation(s)
- Yuli Lai
- Micro-
and Nanosystems Research Group, Faculty of Medicine and Health Technology, Tampere University, P.O. Box 692, 33101 Tampere, Finland
| | - Hao Zhang
- The
State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin 150080, PR China
| | - Yasuhito Sugano
- Department
of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 1-3 Kagurazaka, Sinjuku-ku, Tokyo 162-8601, Japan
| | - Hui Xie
- The
State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin 150080, PR China
- E-mail:
| | - Pasi Kallio
- Micro-
and Nanosystems Research Group, Faculty of Medicine and Health Technology, Tampere University, P.O. Box 692, 33101 Tampere, Finland
- E-mail:
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12
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Abstract
The study of biological samples is one of the most attractive and innovative fields of application of atomic force microscopy AFM. Recent breakthroughs in software and hardware have revolutionized this field and this paper reports on recent trends and describes examples of applications on biological samples. Originally developed for high-resolution imaging purposes, the AFM also has unique capabilities as a nano-indentor to probe the dynamic visco-elastic material properties of living cells in culture. In particular, AFM elastography combines imaging and indentation modalities to map the spatial distribution of cell mechanical properties, which in turn reflect the structure and function of the underlying structure. This paper describes the progress and development of atomic force microscopy as applied to animal and plant cell structures.
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13
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Probing adhesion between nanoscale cellulose fibres using AFM lateral force spectroscopy: The effect of hemicelluloses on hydrogen bonding. Carbohydr Polym 2018; 208:97-107. [PMID: 30658836 DOI: 10.1016/j.carbpol.2018.12.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/17/2018] [Accepted: 12/17/2018] [Indexed: 11/20/2022]
Abstract
Inter-fibre adhesion is a key contributing factor to the mechanical response and functionality of cellulose-based biomaterials. 'Dip-and-Drag' lateral force atomic force microscopy technique is used here to evaluate the influence of arabinoxylan and xyloglucan on interactions between nanoscale cellulose fibres within a hydrated network of bacterial cellulose. A cohesive zone model of the detachment event between two nano-fibres is used to interpret the experimental data and evaluate inter-fibre adhesion energy. The presence of xyloglucan or arabinoxylan is found to increase the adhesive energy by a factor of 4.3 and 1.3, respectively, which is consistent with these two hemicellulose polysaccharides having different specificity of hydrogen bonding with cellulose. Importantly, xyloglucan's ability to strengthen adhesion between cellulose nano-fibres supports emergent models of the primary plant cell walls (Park & Cosgrove, 2012b), which suggest that xyloglucan chains confined within cellulose-cellulose junctions play a key role in cell wall's mechanical response.
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14
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Cosgrove DJ. Nanoscale structure, mechanics and growth of epidermal cell walls. CURRENT OPINION IN PLANT BIOLOGY 2018; 46:77-86. [PMID: 30142487 DOI: 10.1016/j.pbi.2018.07.016] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/19/2018] [Accepted: 07/25/2018] [Indexed: 05/02/2023]
Abstract
This article briefly reviews recent advances in nano-scale and micro-scale assessments of primary cell wall structure, mechanical behaviors and expansive growth. Cellulose microfibrils have hydrophobic and hydrophilic faces which may selectively bind different matrix polysaccharides and adjacent microfibrils. These distinctive binding interactions may guide partially aligned cellulose microfibrils in primary cell walls to form a planar, load-bearing network within each lamella of polylamellate walls. Consideration of expansive growth of cross-lamellate walls leads to a surprising inference: side-by-side sliding of microfibrils may be a key rate-limiting physical step, potentially targeted by specific wall loosening agents. Atomic force microscopy shows different patterns of microfibril movement during force-driven extension versus enzymatic loosening. Consequently, simulations of cell growth as elastic deformation of isotropic cell walls may need to be augmented to incorporate the distinctive behavior of growing cell walls.
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Affiliation(s)
- Daniel J Cosgrove
- Department of Biology, Penn State University, University Park, PA 16803, USA.
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15
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Déléris I, Wallecan J. Relationship between processing history and functionality recovery after rehydration of dried cellulose-based suspensions: A critical review. Adv Colloid Interface Sci 2017; 246:1-12. [PMID: 28688780 DOI: 10.1016/j.cis.2017.06.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 06/28/2017] [Accepted: 06/29/2017] [Indexed: 12/29/2022]
Abstract
Cellulose-based suspensions have raised more and more attention due to their broad range of properties that can be used in paper industry and material science but also in medicine, nanotechnology and food science. Their final functionality is largely dependent on their processing history and notably the structural modifications that occur during drying and rehydration. The purpose of this work is to make a state-of-the-art contribution to the mechanisms involved in the process-structure-function relationships of cellulose-based hydrogels. The different assumptions that exist in the literature are reviewed taking the key role of the initial sample characteristics as well as the processing conditions into consideration. The decrease in swelling ability after drying is clearly due to an overall shrinkage of the structure of the material. At microscale, pore closure and cellulosic fibril aggregation are mentioned as the main reasons. The origins of such irreversible structural modifications take place at molecular level and is mainly explained by the establishment of a new balance of interactions between all components. Nevertheless, the respective contribution of each interaction are still under investigation.
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16
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17
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Benselfelt T, Cranston ED, Ondaral S, Johansson E, Brumer H, Rutland MW, Wågberg L. Adsorption of Xyloglucan onto Cellulose Surfaces of Different Morphologies: An Entropy-Driven Process. Biomacromolecules 2016; 17:2801-11. [DOI: 10.1021/acs.biomac.6b00561] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tobias Benselfelt
- Department
of Fibre and Polymer Technology and Wallenberg Wood Science Center, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Emily D. Cranston
- Department
of Chemical Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
| | - Sedat Ondaral
- Department
of Pulp and Paper Technology, Karadeniz Technical University, 61080 Trabzon, Turkey
| | | | - Harry Brumer
- The
Michael Smith Laboratories and the Department of Chemistry, The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Mark W. Rutland
- Surface and
Corrosion Science, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Lars Wågberg
- Department
of Fibre and Polymer Technology and Wallenberg Wood Science Center, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
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18
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Valle-Delgado JJ, Johansson LS, Österberg M. Bioinspired lubricating films of cellulose nanofibrils and hyaluronic acid. Colloids Surf B Biointerfaces 2016; 138:86-93. [DOI: 10.1016/j.colsurfb.2015.11.047] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/24/2015] [Accepted: 11/25/2015] [Indexed: 12/28/2022]
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19
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Villares A, Moreau C, Dammak A, Capron I, Cathala B. Kinetic aspects of the adsorption of xyloglucan onto cellulose nanocrystals. SOFT MATTER 2015; 11:6472-81. [PMID: 26179417 DOI: 10.1039/c5sm01413a] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In this work, the adsorption of a neutral flexible polysaccharide, xyloglucan (XG), onto thin cellulose nanocrystal (CNC) surfaces has been investigated to get more insight into the CNC-XG association. Gold-coated quartz crystals were spin-coated with one layer of CNC, and XG adsorption was monitored in situ using a quartz crystal microbalance with dissipation (QCM-D). The adsorption of XG under flow at different concentrations did not result in the same surface concentration, which evidenced a kinetically controlled process. In an attempt to describe the binding of XG to CNCs, adsorption data were fitted to a kinetic model comprising a contribution from XG adsorption onto uncovered CNC surfaces and a contribution from XG adsorption after rearrangement. Kinetic studies evidenced the presence of two adsorption regimes as a function of XG concentration. For low XG concentrations, the kinetic constant for chain rearrangement is comparable to the kinetic constant for adsorption. This fact implies a rearrangement and alignment of XG molecules on CNCs. Differently, for higher XG concentrations, the kinetic constant related to the conformational rearrangement decreases, indicating that XG molecules have no time to laterally rearrange before new XG molecules adsorb.
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Affiliation(s)
- Ana Villares
- UR1268 Biopolymères Interactions Assemblages, INRA, F-44316 Nantes, France.
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20
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Lin D, Lopez-Sanchez P, Gidley MJ. Binding of arabinan or galactan during cellulose synthesis is extensive and reversible. Carbohydr Polym 2015; 126:108-21. [DOI: 10.1016/j.carbpol.2015.03.048] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 02/05/2023]
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21
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Dammak A, Quémener B, Bonnin E, Alvarado C, Bouchet B, Villares A, Moreau C, Cathala B. Exploring Architecture of Xyloglucan Cellulose Nanocrystal Complexes through Enzyme Susceptibility at Different Adsorption Regimes. Biomacromolecules 2015; 16:589-96. [DOI: 10.1021/bm5016317] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abir Dammak
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Bernard Quémener
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Estelle Bonnin
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Camille Alvarado
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Brigitte Bouchet
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Ana Villares
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Céline Moreau
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
| | - Bernard Cathala
- INRA, UR1268 Biopolymères
Interactions
Assemblages, 44316 Nantes, France
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22
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Park YB, Cosgrove DJ. Xyloglucan and its Interactions with Other Components of the Growing Cell Wall. ACTA ACUST UNITED AC 2015; 56:180-94. [DOI: 10.1093/pcp/pcu204] [Citation(s) in RCA: 250] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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23
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Iarikov DD, Ducker WA. Effect of grafted oligopeptides on friction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:5760-5769. [PMID: 23594080 DOI: 10.1021/la4002225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Frictional and normal forces in aqueous solution at 25 °C were measured between a glass particle and oligopeptide films grafted from a glass plate. Homopeptide molecules consisting of 11 monomers of either glutamine, leucine, glutamic acid, lysine, or phenylalanine and one heteropolymer were each "grafted from" an oxidized silicon wafer using microwave-assisted solid-phase peptide synthesis. The peptide films were characterized using X-ray photoelectron spectroscopy and secondary ion mass spectrometry. Frictional force measurements showed that the oligopeptides increased the magnitude of friction compared to that on a bare hydrophilic silicon wafer but that the friction was a strong function of the nature of the monomer unit. Overall we find that the friction is lower for more hydrophilic films. For example, the most hydrophobic monomer, leucine, exhibited the highest friction whereas the hydrophilic monomer, polyglutamic acid, exhibited the lowest friction at zero load. When the two surfaces had opposite charges, there was a strong attraction, adhesion, and high friction between the surfaces. Friction for all polymers was lower in phosphate-buffered saline than in pure water, which was attributed to lubrication via hydrated salt ions.
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Affiliation(s)
- Dmitri D Iarikov
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24060, United States
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24
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Nordgren N, Carlsson L, Blomberg H, Carlmark A, Malmström E, Rutland MW. Nanobiocomposite Adhesion: Role of Graft Length and Temperature in a Hybrid Biomimetic Approach. Biomacromolecules 2013; 14:1003-9. [DOI: 10.1021/bm301790b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Niklas Nordgren
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
| | - Linn Carlsson
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
| | - Hanna Blomberg
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
| | - Anna Carlmark
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
| | - Eva Malmström
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
| | - Mark W. Rutland
- Department of Chemistry,
School
of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
- SP Chemistry, Materials and Surfaces, SP Technical Research Institute of Sweden, SE-114 86
Stockholm, Sweden
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25
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Gustafsson E, Johansson E, Wågberg L, Pettersson T. Direct Adhesive Measurements between Wood Biopolymer Model Surfaces. Biomacromolecules 2012; 13:3046-53. [DOI: 10.1021/bm300762e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emil Gustafsson
- Wallenberg
Wood Science Center and ‡Department of Fibre and Polymer Technology, School
of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
| | - Erik Johansson
- Wallenberg
Wood Science Center and ‡Department of Fibre and Polymer Technology, School
of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
| | - Lars Wågberg
- Wallenberg
Wood Science Center and ‡Department of Fibre and Polymer Technology, School
of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
| | - Torbjörn Pettersson
- Wallenberg
Wood Science Center and ‡Department of Fibre and Polymer Technology, School
of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
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26
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Thormann E, Mizuno H, Jansson K, Hedin N, Fernández MS, Arias JL, Rutland MW, Pai RK, Bergström L. Embedded proteins and sacrificial bonds provide the strong adhesive properties of gastroliths. NANOSCALE 2012; 4:3910-3916. [PMID: 22653376 DOI: 10.1039/c2nr30536d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The adhesive properties of gastroliths from a freshwater crayfish (Cherax quadricarinatus) were quantified by colloidal probe atomic force microscopy (AFM) between heavily demineralized gastrolith microparticles and gastrolith substrates of different composition. Combined AFM and transmission electron microscopy studies demonstrated that the sequential detachment and large adhesion energies that characterise the adhesive behaviour of a native gastrolith substrate are dominated by sacrificial bonds between chitin fibres and between chitin fibres and CaCO(3). The sacrificial bonds were shown to be strongly related to the gastrolith proteins and when the majority of these proteins were removed by ethylenediaminetetraacetic acid (EDTA), the sequential detachment disappeared and the adhesive energy was reduced by more than two orders of magnitude.
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Affiliation(s)
- Esben Thormann
- KTH Royal Institute of Technology, Department of Chemistry, Surface and Corrosion Science, SE-100 44 Stockholm, Sweden
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27
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Dibble CJ, Shatova TA, Jorgenson JL, Stickel JJ. Particle morphology characterization and manipulation in biomass slurries and the effect on rheological properties and enzymatic conversion. Biotechnol Prog 2011; 27:1751-9. [DOI: 10.1002/btpr.669] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Revised: 05/23/2011] [Indexed: 11/11/2022]
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28
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Spadiut O, Ibatullin FM, Peart J, Gullfot F, Martinez-Fleites C, Ruda M, Xu C, Sundqvist G, Davies GJ, Brumer H. Building custom polysaccharides in vitro with an efficient, broad-specificity xyloglucan glycosynthase and a fucosyltransferase. J Am Chem Soc 2011; 133:10892-900. [PMID: 21618981 PMCID: PMC3135005 DOI: 10.1021/ja202788q] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Indexed: 11/29/2022]
Abstract
The current drive for applications of biomass-derived compounds, for energy and advanced materials, has led to a resurgence of interest in the manipulation of plant polymers. The xyloglucans, a family of structurally complex plant polysaccharides, have attracted significant interest due to their intrinsic high affinity for cellulose, both in muro and in technical applications. Moreover, current cell wall models are limited by the lack of detailed structure-property relationships of xyloglucans, due to a lack of molecules with well-defined branching patterns. Here, we have developed a new, broad-specificity "xyloglucan glycosynthase", selected from active-site mutants of a bacterial endoxyloglucanase, which catalyzed the synthesis of high molar mass polysaccharides, with complex side-chain structures, from suitable glycosyl fluoride donor substrates. The product range was further extended by combination with an Arabidopsis thaliana α(1→2)-fucosyltransferase to achieve the in vitro synthesis of fucosylated xyloglucans typical of dicot primary cell walls. These enzymes thus comprise a toolkit for the controlled enzymatic synthesis of xyloglucans that are otherwise impossible to obtain from native sources. Moreover, this study demonstrates the validity of a chemo-enzymatic approach to polysaccharide synthesis, in which the simplicity and economy of glycosynthase technology is harnessed together with the exquisite specificity of glycosyltransferases to control molecular complexity.
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Affiliation(s)
- Oliver Spadiut
- Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), 106 91 Stockholm, Sweden
- Wallenberg Wood Science Center, Royal Institute of Technology (KTH), 100 44 Stockholm, Sweden
| | - Farid M. Ibatullin
- Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), 106 91 Stockholm, Sweden
| | - Jonelle Peart
- Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), 106 91 Stockholm, Sweden
| | - Fredrika Gullfot
- Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), 106 91 Stockholm, Sweden
| | - Carlos Martinez-Fleites
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Marcus Ruda
- Swetree Technologies AB, P.O. Box 4095, 904 03 Umeå, Sweden
| | - Chunlin Xu
- Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), 106 91 Stockholm, Sweden
- Wallenberg Wood Science Center, Royal Institute of Technology (KTH), 100 44 Stockholm, Sweden
| | - Gustav Sundqvist
- Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), 106 91 Stockholm, Sweden
| | - Gideon J. Davies
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Harry Brumer
- Division of Glycoscience, School of Biotechnology, Royal Institute of Technology (KTH), 106 91 Stockholm, Sweden
- Wallenberg Wood Science Center, Royal Institute of Technology (KTH), 100 44 Stockholm, Sweden
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29
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Cerclier C, Cousin F, Bizot H, Moreau C, Cathala B. Elaboration of spin-coated cellulose-xyloglucan multilayered thin films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:17248-55. [PMID: 20882954 DOI: 10.1021/la102614b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In the context of developing a biomimetic model of the primary cell wall, our aim was to produce multilayered thin films composed of cellulose nanocrystals (CN) and xyloglucan (XG). We investigated the effect of XG concentrations ranging from 0.5 g/L to 10 g/L. The choice of concentration was based on rheological investigation of the XG solutions which indicated that the two lower concentrations (0.5 and 1 g/L) correspond to a semidilute regime where the polymer chains are not entangled, whereas they are entangled at the highest concentrations (5 and 10 g/L). Several processes of film preparation were tested (dipping or spin-coating, with or without a rinsing step). The film growth profiles obtained for different XG concentrations by mechanical profilometry showed that spin-coating without rinsing was the most efficient process. Results showed that at high XG concentrations (XG = 5 g/L and XG = 10 g/L) plateau values were reached after the formation of 3 or 4 bilayers, whereas growth of the multilayer structure was linear at the lower XG concentrations (XG = 0.5 g/L and XG = 1 g/L). The thickness of one CN/XG bilayer corresponded to a single layer of CN covered by a thin XG layer, despite the absence of a rinsing step between successive coatings. The importance of the XG concentration was confirmed by determining by neutron reflectivity the film architecture obtained from four XG solutions after eight successive paired coatings. The results are discussed in relation to the role of XG in the plant cell wall.
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Affiliation(s)
- Carole Cerclier
- UR1268 Biopolymères Interactions Assemblages, INRA, F-44316 Nantes, France
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30
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Cranston ED, Gray DG, Rutland MW. Direct surface force measurements of polyelectrolyte multilayer films containing nanocrystalline cellulose. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:17190-17197. [PMID: 20925376 DOI: 10.1021/la1030729] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Polyelectrolyte multilayer films containing nanocrystalline cellulose (NCC) and poly(allylamine hydrochloride) (PAH) make up a new class of nanostructured composite with applications ranging from coatings to biomedical devices. Moreover, these materials are amenable to surface force studies using colloid-probe atomic force microscopy (CP-AFM). For electrostatically assembled films with either NCC or PAH as the outermost layer, surface morphology was investigated by AFM and wettability was examined by contact angle measurements. By varying the surrounding ionic strength and pH, the relative contributions from electrostatic, van der Waals, steric, and polymer bridging interactions were evaluated. The ionic cross-linking in these films rendered them stable under all solution conditions studied although swelling at low pH and high ionic strength was inferred. The underlying polymer layer in the multilayered film was found to dictate the dominant surface forces when polymer migration and chain extension were facilitated. The precontact normal forces between a silica probe and an NCC-capped multilayer film were monotonically repulsive at pH values where the material surfaces were similarly and fully charged. In contrast, at pH 3.5, the anionic surfaces were weakly charged but the underlying layer of cationic PAH was fully charged and attractive forces dominated due to polymer bridging from extended PAH chains. The interaction with an anionic carboxylic acid probe showed similar behavior to the silica probe; however, for a cationic amine probe with an anionic NCC-capped film, electrostatic double-layer attraction at low pH, and electrostatic double-layer repulsion at high pH, were observed. Finally, the effect of the capping layer was studied with an anionic probe, which indicated that NCC-capped films exhibited purely repulsive forces which were larger in magnitude than the combination of electrostatic double-layer attraction and steric repulsion, measured for PAH-capped films. Wherever possible, DLVO theory was used to fit the measured surface forces and apparent surface potentials and surface charge densities were calculated.
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Affiliation(s)
- Emily D Cranston
- Department of Chemistry, McGill University, Montréal, QC, H3A 2A7 Canada.
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31
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Winter HT, Cerclier C, Delorme N, Bizot H, Quemener B, Cathala B. Improved Colloidal Stability of Bacterial Cellulose Nanocrystal Suspensions for the Elaboration of Spin-Coated Cellulose-Based Model Surfaces. Biomacromolecules 2010; 11:3144-51. [DOI: 10.1021/bm100953f] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Heiko T. Winter
- UR1268 Biopolymères, Interactions et Assemblages, INRA, 44300 Nantes, France, and UMR6087, Laboratoire de Physique de l’Etat Condensé, Université du Maine, 72085 Le Mans, France
| | - Carole Cerclier
- UR1268 Biopolymères, Interactions et Assemblages, INRA, 44300 Nantes, France, and UMR6087, Laboratoire de Physique de l’Etat Condensé, Université du Maine, 72085 Le Mans, France
| | - Nicolas Delorme
- UR1268 Biopolymères, Interactions et Assemblages, INRA, 44300 Nantes, France, and UMR6087, Laboratoire de Physique de l’Etat Condensé, Université du Maine, 72085 Le Mans, France
| | - Hervé Bizot
- UR1268 Biopolymères, Interactions et Assemblages, INRA, 44300 Nantes, France, and UMR6087, Laboratoire de Physique de l’Etat Condensé, Université du Maine, 72085 Le Mans, France
| | - Bernard Quemener
- UR1268 Biopolymères, Interactions et Assemblages, INRA, 44300 Nantes, France, and UMR6087, Laboratoire de Physique de l’Etat Condensé, Université du Maine, 72085 Le Mans, France
| | - Bernard Cathala
- UR1268 Biopolymères, Interactions et Assemblages, INRA, 44300 Nantes, France, and UMR6087, Laboratoire de Physique de l’Etat Condensé, Université du Maine, 72085 Le Mans, France
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32
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Nordgren N, Lönnberg H, Hult A, Malmström E, Rutland MW. Adhesion dynamics for cellulose nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2009; 1:2098-103. [PMID: 20355839 DOI: 10.1021/am900381t] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The efficiency of poly(ε-caprolactone) (PCL) as a matrix polymer for cellulose nanocomposites has been investigated at the macromolecular contact level using atomic force microscopy in a colloidal probe configuration. Model cellulose microspheres grafted with PCL were prepared via ring-opening polymerization. Force measurements between the functionalized particles revealed the adhesion to be highly dependent on the contact time because of a diffusion-controlled mechanism. Moreover, an increase of the temperature to 60 degrees C (close to T(m) for the PCL graft) greatly enhanced the adhesion at the polymer-polymer interface, demonstrating the importance of entanglements in the annealing of composite materials.
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33
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Nordgren N, Rutland MW. Tunable nanolubrication between dual-responsive polyionic grafts. NANO LETTERS 2009; 9:2984-90. [PMID: 19634866 DOI: 10.1021/nl901411e] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
This study reports on a direct approach of quantitatively probing the nanotribological response of chemically end-grafted polyions. A combination of a quartz crystal microbalance with dissipation and atomic force microscopy, in the now well established colloidal probe mode, was utilized to investigate the stimuli-induced lubrication behavior between poly(2-(dimethylamino)ethyl methacrylate) grafts on gold. Force and friction measurements showed reversible transitions of up to an order of magnitude difference induced by varying the solvent conditions. The greatly enhanced lubrication observed at low pH was attributed to the formation of a repulsive, highly charged, hydrated cushion. At high pH the friction was significantly increased. The system turned attractive above the lower critical solution temperature with a small friction reduction interpreted as being due to nanoscopic flattening at the interfacial boundary.
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Affiliation(s)
- Niklas Nordgren
- Department of Chemistry, Surface and Corrosion Science, Royal Institute of Technology, 10044 Stockholm, Sweden
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34
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Bergenstråhle M, Thormann E, Nordgren N, Berglund LA. Force pulling of single cellulose chains at the crystalline cellulose-liquid interface: a molecular dynamics study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:4635-4642. [PMID: 19231815 DOI: 10.1021/la803915c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Pulling single cellulose molecules from a crystalline cellulose surface has been modeled by molecular dynamics (MD) simulations of the experimental procedure used in atomic force microscopy (AFM). Specifically, the aim of the study was to investigate cellulose interactions at desorption. Simulations were performed in both water and the organic solvent cyclohexane. Moreover, the effects of initial octamer conformation and orientation with respect to the surface chains were studied. A strong effect from the solvent was observed. In cyclohexane, normal forces of 200-500 pN and energies of 43.5+/-6.0 kJ/mol glucose unit were required to pull off the octamer. The normal forces in water were substantially lower, around 58 pN, and the energies were 18.2+/-3.6 kJ/mol glucose unit. In addition, the lateral components of the pull-off force were shown to provide information on initial conformation and orientation. Hydrogen bonds between the octamer and surface were analyzed and found to be an important factor in the pull-off behavior. Altogether, it was shown that MD provides detailed information on the desorption processes that may be useful for the interpretation of AFM experiments.
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Affiliation(s)
- Malin Bergenstråhle
- Department of Fibre and Polymer Technology, Royal Institute of Technology, Teknikringen 58, SE-10044 Stockholm, Sweden.
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35
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Mishra A, Malhotra AV. Tamarind xyloglucan: a polysaccharide with versatile application potential. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b911150f] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Cárdenas M, Valle-Delgado JJ, Hamit J, Rutland MW, Arnebrant T. Interactions of hydroxyapatite surfaces: conditioning films of human whole saliva. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:7262-7268. [PMID: 18547092 DOI: 10.1021/la800402s] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Hydroxyapatite is a very interesting material given that it is the main component in tooth enamel and because of its uses in bone implant applications. Therefore, not only the characterization of its surface is of high relevance but also designing reliable methods to study the interfacial properties of films adsorbed onto it. In this paper we apply the colloidal probe atomic force microscopy method to investigate the surface properties of commercially available hydroxyapatite surfaces (both microscopic particles and macroscopic discs) in terms of interfacial and frictional forces. In this way, we find that hydroxyapatite surfaces at physiological relevant conditions are slightly negatively charged. The surfaces were then exposed to human whole saliva, and the surface properties were re-evaluated. A thick film was formed that was very resistant to mechanical stress. The frictional measurements demonstrated that the film was indeed highly lubricating, supporting the argument that this system may prove to be a relevant model for evaluating dental and implant systems.
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Affiliation(s)
- Marité Cárdenas
- Biomedical Laboratory Science and Technology, Health and Society, Malmoe University, SE-20506 Malmoe, Sweden.
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Altaner CM, Jarvis MC. Modelling polymer interactions of the 'molecular Velcro' type in wood under mechanical stress. J Theor Biol 2008; 253:434-45. [PMID: 18485371 DOI: 10.1016/j.jtbi.2008.03.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2007] [Revised: 03/03/2008] [Accepted: 03/09/2008] [Indexed: 10/22/2022]
Abstract
Trees withstand wind and snow loads by synthesising wood that varies greatly in mechanical properties: flexible in twigs and in the stem of the sapling, and rigid in the outer part of the mature stem. The 'molecular Velcro' model of Keckes et al. [2003. Cell-wall recovery after irreversible deformation of wood. Nat. Mater. 2, 810-814] permits the simulation of the tensile properties of water-saturated wood as found in living trees. A basic feature of this model is the presence of non-covalent interactions between hemicellulose chains attached to adjacent cellulose microfibrils, which are disrupted above a threshold level of interfibrillar shear. However, other evidence does not confirm the importance of hemicellulose-hemicellulose association in the cohesion of the interfibrillar matrix. Here, we present an alternative model in which hemicellulose chains bridging continuously from one microfibril aggregate (macrofibril) to the next provide most of the cohesion. We show that such hemicellulose bridges exist and that the stripping of the bridging chains from the cellulose surfaces under the tensile stress component normal to the macrofibrils can provide an alternative triggering mechanism for shear deformation between one macrofibril and the next. When one macrofibril then slides past another, a domain of the wood cell wall can extend but simultaneously it twists until the spacing between macrofibrils is reduced again and contact through hemicelluloses bridges is restored. Overall deformation therefore takes place through a series of local stick-slip events involving temporary twisting of small domains within the wood cell wall. Modelled load-deformation curves for this modified 'molecular Velcro' model are similar, although not identical, to those for the original model. However, the mechanism is different and more consistent with current views of the structure of wood cell walls, providing a framework within which the developmental control of rigidity in wood synthesised in different parts of a tree may be considered.
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Affiliation(s)
- C M Altaner
- WestChem, Glasgow University, Glasgow G12 8QQ, Scotland, UK
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Ahola S, Salmi J, Johansson LS, Laine J, Österberg M. Model Films from Native Cellulose Nanofibrils. Preparation, Swelling, and Surface Interactions. Biomacromolecules 2008; 9:1273-82. [PMID: 18307305 DOI: 10.1021/bm701317k] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Ahola
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
| | - J. Salmi
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
| | - L.-S. Johansson
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
| | - J. Laine
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
| | - M. Österberg
- Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Helsinki University of Technology, P.O. Box 3320, FIN-02015 TKK Espoo, Finland
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Nordgren N, Eklöf J, Zhou Q, Brumer H, Rutland MW. Top-Down Grafting of Xyloglucan to Gold Monitored by QCM-D and AFM: Enzymatic Activity and Interactions with Cellulose. Biomacromolecules 2008; 9:942-8. [DOI: 10.1021/bm701214e] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Niklas Nordgren
- Department of Chemistry, Surface Chemistry, Royal Institute of Technology, Drottning Kristinas väg 51, SE-100 44 Stockholm, Sweden and Institute for Surface Chemistry, Stockholm, and Department of Biotechnology, Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
| | - Jens Eklöf
- Department of Chemistry, Surface Chemistry, Royal Institute of Technology, Drottning Kristinas väg 51, SE-100 44 Stockholm, Sweden and Institute for Surface Chemistry, Stockholm, and Department of Biotechnology, Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
| | - Qi Zhou
- Department of Chemistry, Surface Chemistry, Royal Institute of Technology, Drottning Kristinas väg 51, SE-100 44 Stockholm, Sweden and Institute for Surface Chemistry, Stockholm, and Department of Biotechnology, Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
| | - Harry Brumer
- Department of Chemistry, Surface Chemistry, Royal Institute of Technology, Drottning Kristinas väg 51, SE-100 44 Stockholm, Sweden and Institute for Surface Chemistry, Stockholm, and Department of Biotechnology, Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
| | - Mark W. Rutland
- Department of Chemistry, Surface Chemistry, Royal Institute of Technology, Drottning Kristinas väg 51, SE-100 44 Stockholm, Sweden and Institute for Surface Chemistry, Stockholm, and Department of Biotechnology, Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
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Gloster TM, Ibatullin FM, Macauley K, Eklöf JM, Roberts S, Turkenburg JP, Bjørnvad ME, Jørgensen PL, Danielsen S, Johansen KS, Borchert TV, Wilson KS, Brumer H, Davies GJ. Characterization and Three-dimensional Structures of Two Distinct Bacterial Xyloglucanases from Families GH5 and GH12. J Biol Chem 2007; 282:19177-89. [PMID: 17376777 DOI: 10.1074/jbc.m700224200] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The plant cell wall is a complex material in which the cellulose microfibrils are embedded within a mesh of other polysaccharides, some of which are loosely termed "hemicellulose." One such hemicellulose is xyloglucan, which displays a beta-1,4-linked d-glucose backbone substituted with xylose, galactose, and occasionally fucose moieties. Both xyloglucan and the enzymes responsible for its modification and degradation are finding increasing prominence, reflecting both the drive for enzymatic biomass conversion, their role in detergent applications, and the utility of modified xyloglucans for cellulose fiber modification. Here we present the enzymatic characterization and three-dimensional structures in ligand-free and xyloglucan-oligosaccharide complexed forms of two distinct xyloglucanases from glycoside hydrolase families GH5 and GH12. The enzymes, Paenibacillus pabuli XG5 and Bacillus licheniformis XG12, both display open active center grooves grafted upon their respective (beta/alpha)(8) and beta-jelly roll folds, in which the side chain decorations of xyloglucan may be accommodated. For the beta-jelly roll enzyme topology of GH12, binding of xylosyl and pendant galactosyl moieties is tolerated, but the enzyme is similarly competent in the degradation of unbranched glucans. In the case of the (beta/alpha)(8) GH5 enzyme, kinetically productive interactions are made with both xylose and galactose substituents, as reflected in both a high specific activity on xyloglucan and the kinetics of a series of aryl glycosides. The differential strategies for the accommodation of the side chains of xyloglucan presumably facilitate the action of these microbial hydrolases in milieus where diverse and differently substituted substrates may be encountered.
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Affiliation(s)
- Tracey M Gloster
- York Structural Biology Laboratory, Department of Chemistry, University of York, York YO10 5YW, United Kingdom
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Stiernstedt J, Nordgren N, Wågberg L, Brumer H, Gray DG, Rutland MW. Friction and forces between cellulose model surfaces: A comparison. J Colloid Interface Sci 2006; 303:117-23. [PMID: 16949086 DOI: 10.1016/j.jcis.2006.06.070] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2006] [Revised: 06/29/2006] [Accepted: 06/29/2006] [Indexed: 11/25/2022]
Abstract
Four different cellulose model surfaces, and one silica surface, have been studied by means of atomic force microscopy (AFM). The normal interactions have been found to consist of a longer range double layer force with a short range steric interaction, the nature of which is extensively discussed. Both the surface charge and range of the steric force depend on the type of cellulose substrate used, as does the magnitude of the adhesion. Studies of friction reveal that surface roughness is the determining factor for the friction coefficient, with which it increases monotonically. The absolute value, however, is determined by the surface chemistry. All studied cellulose surfaces show similar behavior in response to xyloglucan addition.
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Affiliation(s)
- Johanna Stiernstedt
- Department of Chemistry, Surface Chemistry, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
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