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Ji H, Wang Q, Wang X, Zhang L, Yang P. Pea protein-inulin conjugate prepared by atmospheric pressure plasma jet combined with glycosylation: structure and emulsifying properties. Front Nutr 2024; 11:1416753. [PMID: 38826578 PMCID: PMC11140046 DOI: 10.3389/fnut.2024.1416753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Accepted: 05/06/2024] [Indexed: 06/04/2024] Open
Abstract
Pea protein is one of plant proteins with high nutritional value, but its lower solubility and poor emulsifying properties limit its application in food industry. Based on wet-heating glycosylation of pea protein and inulin, effects of discharge power of atmospheric pressure plasma jet (APPJ) on structure, solubility, and emulsifying ability of pea protein-inulin glycosylation conjugate were explored. Results indicated that the APPJ discharge power did not affect the primary structure of pea protein. However, changes in secondary and spatial structure of pea protein were observed. When APPJ discharge power was 600 W, the solubility of glycosylation conjugate was 75.0% and the emulsifying stability index was 98.9 min, which increased by 14.85 and 21.95% than that of only glycosylation sample, respectively. These findings could provide technical support for APPJ treatment combination with glycosylation to enhance the physicochemical properties of plant-based proteins.
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Affiliation(s)
| | | | | | - Lingwen Zhang
- School of Food Science, Henan Institute of Science and Technology, Xinxiang, China
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2
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Dib MA, Hucher N, Gore E, Grisel M. Original tools for xanthan hydrophobization in green media: Synthesis and characterization of surface activity. Carbohydr Polym 2022; 291:119548. [DOI: 10.1016/j.carbpol.2022.119548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 11/25/2022]
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3
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Liu J, Xing Y, Xue B, Zhou X. Nanozyme enhanced paper-based biochip with a smartphone readout system for rapid detection of cyanotoxins in water. Biosens Bioelectron 2022; 205:114099. [PMID: 35217255 DOI: 10.1016/j.bios.2022.114099] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/27/2022] [Accepted: 02/14/2022] [Indexed: 11/02/2022]
Abstract
Cyanobacterial harmful algal blooms in freshwater systems can produce cyanotoxins, such as microcystins (MCs) and nodularins (NODs), presenting serious threats to human health and ecosystems. Required routine monitoring of cyanotoxins in water samples, as posed by U.S. EPA drinking water contaminant candidate list 5 (CCL5), demands for cost-effective, reliable and sensitive MCs/NODs detection methods. We report the development of a colorimetric paper-based immunochip assisted by nanozyme catalysis with a smartphone readout system for rapid detection of cyanotoxins in water. We show that the introduction of biorthogonal click reaction enables in situ facile self-assembly of multi-layers of peroxidase-like nanozyme onto the anti-MCs/NODs monoclonal antibody. We can detect 13 variants of MCs/NODs even in the sub-microgram per liter range with detection limit of below 0.7 μg/L and satisfactory recovery percentages between 88 and 120% in different water matrices. Our technology shows a good correlation with the well-developed ELISA technology, demonstrating its great potential applications in resource-limited or less-developed regions for on-site and large-scale screening of cyanotoxins in water environment.
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Affiliation(s)
- Jinchuan Liu
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yunpeng Xing
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Boyuan Xue
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Xiaohong Zhou
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing, 100084, China.
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4
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Physical modification of Lepidium perfoliatum seed gum using cold atmospheric-pressure plasma treatment. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Arias SL, Devorkin J, Spear JC, Civantos A, Allain JP. Bacterial Envelope Damage Inflicted by Bioinspired Nanostructures Grown in a Hydrogel. ACS APPLIED BIO MATERIALS 2020; 3:7974-7988. [PMID: 35019537 DOI: 10.1021/acsabm.0c01076] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Surface-associated bacterial communities, known as biofilms, are responsible for a broad spectrum of infections in humans. Recent studies have indicated that surfaces containing nanoscale protrusions, like those in dragonfly wings, create a hostile niche for bacterial colonization and biofilm growth. This functionality has been mimicked on metals and semiconductors by creating nanopillars and other high aspect ratio nanostructures at the interface of these materials. However, bactericidal topographies have not been reported on clinically relevant hydrogels and highly compliant polymers, mostly because of the complexity of fabricating nanopatterns in hydrogels with precise control of the size that can also resist aqueous immersion. Here, we report the fabrication of bioinspired bactericidal nanostructures in bacterial cellulose (BC) hydrogels using low-energy ion beam irradiation. By challenging the currently accepted view, we show that the nanostructures grown in BC affect preferentially stiff membranes like those of the Gram-positive bacteria Bacillus subtilis in a time-dependent manner and, to a lesser extent, the more deformable and softer membrane of Escherichia coli. Moreover, the nanostructures in BC did not affect the viability of murine preosteoblasts. Using single-cell analysis, we demonstrate that indeed B. subtilis requires less force than E. coli to be penetrated by nanoprobes with dimensions comparable to those of the nanostructured BC, providing the first direct experimental evidence validating a mechanical model of membrane rupture via a tension-induced mechanism within the activation energy theory. Our findings bridge the gap between mechano-bactericidal surfaces and low-dimensional materials, including single-walled carbon nanotubes and graphene nanosheets, in which a higher bactericidal activity toward Gram-positive bacteria has been extensively reported. Our results also demonstrate the ability to confer bactericidal properties to a hydrogel by only altering its topography at the nanoscale and contribute to a better understanding of the bacterial mechanobiology, which is fundamental for the rational design bactericidal topographies.
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Affiliation(s)
- Sandra L Arias
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Joshua Devorkin
- Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jessica C Spear
- Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Ana Civantos
- Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jean Paul Allain
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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6
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Li N, Yu JJ, Jin N, Chen Y, Li SH, Chen Y. Modification of the physicochemical and structural characteristics of zein suspension by dielectric barrier discharge cold plasma treatment. J Food Sci 2020; 85:2452-2460. [PMID: 32691480 DOI: 10.1111/1750-3841.15350] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 05/27/2020] [Accepted: 05/30/2020] [Indexed: 12/24/2022]
Abstract
Owing to the strong hydrophobicity of zein, improved solubility is required to enhance the recovery of bioactive peptides. Using a zein suspension prepared by the antisolvent precipitation method, the impact of varying the voltage during dielectric barrier discharge (DBD) treatment on the physicochemical and conformational properties of zein in water was investigated. Analysis of the particle size, specific surface area, and free sulfhydryl content indicated that the protein solubility was maximized by treatment at 70 V for 70 s. DBD treatment destroyed covalent bonds and introduced some hydrophilic groups onto the zein surface, thus enhancing the contact area with water molecules and leading to a more uniform dispersion. A decrease in the hydrodynamic radius of zein micelles indicated that intermolecular interactions were disrupted, thus improving dispersion stability. A more hydrophilic microenvironment was formed owing to the reduction in hydrophobic interactions. Additionally, evaluation of the secondary structure demonstrated that DBD treatment broke hydrogen bonds, resulting in a loose conformation with more exposed sites of action for water. These results are expected to facilitate the development of technologies for improving utilization of zein. PRACTICAL APPLICATION: Strong hydrophobicity limits the application of zein in the food industry. The study indicated that DBD treatment could promote loose structure, and improve dispersion stability and hydrophilicity of zein suspension prepared by antisolvent precipitation method. This work revealed the potential of cold plasma treatment for modifying zein and other insoluble proteins, which would expand their scope of application.
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Affiliation(s)
- Nan Li
- State Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Jiao-Jiao Yu
- State Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Nan Jin
- State Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Yue Chen
- State Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Shu-Hong Li
- State Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Ye Chen
- State Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
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7
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Zaitsev A, Moisan S, Poncin-Epaillard F. Study of the alkali lignin stabilization thanks to plasma process. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.09.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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8
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Abstract
This paper describes the results of using oxygen (O2) plasma to treat both greige and scoured cotton yarns to cause significant degradation of cellulose. This study is an effort to reduce hazardous caustic chemicals commonly used to make the cellulose molecule more accessible for uses in such applications as biofuels. Through high power density, 0.46 W/cm2, and the study of varying exposure times, we find longer durations of 30 min to 90 min result in significant cellulose structure degradation. Due to waxes and contaminants found on greige yarns, scoured yarn degradation occurs at shorter exposure times than greige yarns, however, both experience tearing and pitting with longer exposures. This study provides evidence that significant degradation of cellulosic yarns can be achieved through high power density O2 plasma exposure.
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9
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Chitosan Based Regenerated Cellulose Fibers Functionalized with Plasma and Ultrasound. COATINGS 2018. [DOI: 10.3390/coatings8040133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Application of xanthan gum as polysaccharide in tissue engineering: A review. Carbohydr Polym 2017; 180:128-144. [PMID: 29103488 DOI: 10.1016/j.carbpol.2017.10.009] [Citation(s) in RCA: 248] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 09/20/2017] [Accepted: 10/02/2017] [Indexed: 12/11/2022]
Abstract
Xanthan gum is a microbial high molecular weight exo-polysaccharide produced by Xanthomonas bacteria (a Gram-negative bacteria genus that exhibits several different species) and it has widely been used as an additive in various industrial and biomedical applications such as food and food packaging, cosmetics, water-based paints, toiletries, petroleum, oil-recovery, construction and building materials, and drug delivery. Recently, it has shown great potential in issue engineering applications and a variety of modification methods have been employed to modify xanthan gum as polysaccharide for this purpose. However, xanthan gum-based biomaterials need further modification for several targeted applications due to some disadvantages (e.g., processing and mechanical performance of xanthan gum), where modified xanthan gum will be well suited for tissue engineering products. In this review, the current scenario of the use of xanthan gum for various tissue engineering applications, including its origin, structure, properties, modification, and processing for the preparation of the hydrogels and/or the scaffolds is precisely reviewed.
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11
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Saka C. Overview on the Surface Functionalization Mechanism and Determination of Surface Functional Groups of Plasma Treated Carbon Nanotubes. Crit Rev Anal Chem 2017; 48:1-14. [DOI: 10.1080/10408347.2017.1356699] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Cafer Saka
- School of Health, Siirt University, Siirt, Turkey
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12
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Wang SQ, Huang GQ, Du YL, Xiao JX. Modification of Konjac Glucomannan by Reduced-Pressure Radio-Frequency Air Plasma. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2017. [DOI: 10.1515/ijfe-2016-0377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe potential of reduced-pressure radio-frequency air plasma (RFAP) in the modification of konjac glucomannan (KGM) was investigated. KGM film was exposed to 100 W RFAP for 50 s, 100 s, 150 s, 200 s, and 250 s, ground, and then subjected to various characterizations. Fourier Transform Infrared Spectroscopy (FTIR) revealed that RFAP treatment increased the content of –OH groups in KGM, with the lowest and highest rise occurring at the exposure durations 150 s and 250 s, respectively. RFAP radiation decreased the solubility of KGM at certain exposure durations, but slightly increased its thermal stability. Exposure to RFAP for 150 s and 250 s increased the hardness of the resultant KGM gel, but decreased the viscosity and elasticity of the KGM solution in a duration-dependent manner. Scanning Electron Microscope (SEM) observation revealed that RFAP treatment led to rougher surfaces and XRD (X-Ray Diffraction) analysis indicated the destroyed crystallinity of KGM. Hence, RFAP has potential application in the modification of KGM.
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13
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Dermutz H, Thompson-Steckel G, Forró C, de Lange V, Dorwling-Carter L, Vörös J, Demkó L. Paper-based patterned 3D neural cultures as a tool to study network activity on multielectrode arrays. RSC Adv 2017. [DOI: 10.1039/c7ra00971b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
High-throughput platform targeting activity patterns of 3D neural cultures with arbitrary topology, by combining network-wide intracellular and local extracellular signals.
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Affiliation(s)
- Harald Dermutz
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- ETH Zurich
- CH-8092 Zurich
- Switzerland
| | - Greta Thompson-Steckel
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- ETH Zurich
- CH-8092 Zurich
- Switzerland
| | - Csaba Forró
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- ETH Zurich
- CH-8092 Zurich
- Switzerland
| | - Victoria de Lange
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- ETH Zurich
- CH-8092 Zurich
- Switzerland
| | - Livie Dorwling-Carter
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- ETH Zurich
- CH-8092 Zurich
- Switzerland
| | - János Vörös
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- ETH Zurich
- CH-8092 Zurich
- Switzerland
| | - László Demkó
- Laboratory of Biosensors and Bioelectronics
- Institute for Biomedical Engineering
- ETH Zurich
- CH-8092 Zurich
- Switzerland
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14
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Plasma treatment of paper for protein immobilization on paper-based chemiluminescence immunodevice. Biosens Bioelectron 2016; 79:581-8. [DOI: 10.1016/j.bios.2015.12.099] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 12/20/2015] [Accepted: 12/27/2015] [Indexed: 11/20/2022]
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15
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Ventura H, Claramunt J, Navarro A, Rodriguez-Perez MA, Ardanuy M. Effects of Wet/Dry-Cycling and Plasma Treatments on the Properties of Flax Nonwovens Intended for Composite Reinforcing. MATERIALS 2016; 9:ma9020093. [PMID: 28787893 PMCID: PMC5456463 DOI: 10.3390/ma9020093] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 12/23/2015] [Accepted: 01/25/2016] [Indexed: 11/16/2022]
Abstract
This research analyzes the effects of different treatments on flax nonwoven (NW) fabrics which are intended for composite reinforcement. The treatments applied were of two different kinds: a wet/dry cycling which helps to stabilize the cellulosic fibers against humidity changes and plasma treatments with air, argon and ethylene gases considering different conditions and combinations, which produce variation on the chemical surface composition of the NWs. The resulting changes in the chemical surface composition, wetting properties, thermal stability and mechanical properties were determined. Variations in surface morphology could be observed by scanning electron microscopy (SEM). The results of the X-ray photoelectron spectroscopy (XPS) showed significant changes to the surface chemistry for the samples treated with argon or air (with more content on polar groups on the surface) and ethylene plasma (with less content of polar groups). Although only slight differences were found in moisture regain and water retention values (WRV), significant changes were found on the contact angle values, thus revealing hydrophilicity for the air-treated and argon-treated samples and hydrophobicity for the ethylene-treated ones. Moreover, for some of the treatments the mechanical testing revealed an increase of the NW breaking force.
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Affiliation(s)
- Heura Ventura
- Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya-BarcelonaTech, Colom 11, Terrassa 08222, Spain.
| | - Josep Claramunt
- Departament d'Enginyeria Agroalimentària i Biotecnologia, Universitat Politècnica de Catalunya-BarcelonaTech, Av. del Canal Olímpic 15, Castelldefels 08860, Spain.
| | - Antonio Navarro
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya-BarcelonaTech, Colom 1, Terrassa 08222, Spain.
| | - Miguel A Rodriguez-Perez
- Cellular Materials Laboratory, Condensed Matter Physics Department, Universidad de Valladolid, Paseo Belén 4, Facultad de Ciencias, Valladolid 47011, Spain.
| | - Mònica Ardanuy
- Departament d'Enginyeria Tèxtil i Paperera, Universitat Politècnica de Catalunya-BarcelonaTech, Colom 11, Terrassa 08222, Spain.
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Couturaud B, Baldo A, Mas A, Robin JJ. Improvement of the interfacial compatibility between cellulose and poly(l-lactide) films by plasma-induced grafting of l-lactide: The evaluation of the adhesive properties using a peel test. J Colloid Interface Sci 2015; 448:427-36. [DOI: 10.1016/j.jcis.2015.02.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 02/12/2015] [Accepted: 02/12/2015] [Indexed: 11/24/2022]
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17
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Chiappone A, Nair J, Gerbaldi C, Zeno E, Bongiovanni R. Flexible and high performing polymer electrolytes obtained by UV-induced polymer–cellulose grafting. RSC Adv 2014. [DOI: 10.1039/c4ra07299e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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18
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Popescu MC, Totolin M, Tibirna CM, Sdrobis A, Stevanovic T, Vasile C. Grafting of softwood kraft pulps fibers with fatty acids under cold plasma conditions. Int J Biol Macromol 2010; 48:326-35. [PMID: 21182856 DOI: 10.1016/j.ijbiomac.2010.12.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 12/05/2010] [Accepted: 12/13/2010] [Indexed: 11/26/2022]
Abstract
Cold plasma treatment is used to modify the cellulosic fibers for a variety of applications. The grafting of softwood unbleached (UBP) and bleached (BP) kraft pulp fibers has been performed under the action of cold plasma discharges, using different kinds of fatty acids. The grafted samples are characterized by FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), termogravimetry (TG-DTG) and X-ray diffraction (XRD). All these methods confirm the morphological and structural changes after plasma treatment which determines the modification in cellulosic fiber properties. The active centers created within the cellulose chains by plasma treatment were used to initiate grafting reactions with fatty acids. Such modification is useful to enhance the fibers properties such as softness and to change hydrophilic/hydrophobic balance.
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Affiliation(s)
- Maria-Cristina Popescu
- Petru Poni Institute of Macromolecular Chemistry, Department of Physical Chemistry of Polymers, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania.
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Pykönen M, Silvaani H, Preston J, Fardim P, Toivakka M. Plasma activation induced changes in surface chemistry of pigment coating components. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Drnovská H, Lapčík L, Buršíková V, Zemek J, Barros-Timmons AM. Surface properties of polyethylene after low-temperature plasma treatment. Colloid Polym Sci 2003. [DOI: 10.1007/s00396-003-0871-8] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Martin AR, Manolache S, Denes FS, Mattoso LHC. Functionalization of sisal fibers and high-density polyethylene by cold plasma treatment. J Appl Polym Sci 2002. [DOI: 10.1002/app.10801] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Zauscher S, Klingenberg DJ. Friction between cellulose surfaces measured with colloidal probe microscopy. Colloids Surf A Physicochem Eng Asp 2001. [DOI: 10.1016/s0927-7757(00)00704-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Zauscher S, Klingenberg DJ. Normal Forces between Cellulose Surfaces Measured with Colloidal Probe Microscopy. J Colloid Interface Sci 2000; 229:497-510. [PMID: 10985829 DOI: 10.1006/jcis.2000.7008] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Colloidal probe microscopy was employed to study interactions between cellulose surfaces in aqueous solutions. Hydrodynamic forces must be accounted for in data analysis. Long-range interactions betweeen cellulose surfaces are governed by double-layer forces and, once surfaces contact, by osmotic repulsive forces and viscoelasticity. Increasing the ionic strength decreases surface potentials and increases adhesive forces. Polyelectrolytes cause strong steric repulsion at high surface coverage, where interactions are sensitive to probe velocity. Polymer bridging occurs at low coverage. The conformation of adsorbed polyelectrolytes depends on the polymer concentration. Copyright 2000 Academic Press.
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Affiliation(s)
- S Zauscher
- Department of Chemical Engineering, and Rheology Research Center, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin, 53706
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