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Visan RM, Leonties AR, Anastasescu M, Angelescu DG. Towards understanding the interaction of quercetin with chitosan-phytate complex: An experimental and computational investigation. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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2
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Brito EL, Filho ED, Nogueira DO, Streck L, Fonseca JL. Dynamic light scattering in concentrated polyacrylamide solutions. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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3
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de Queiroz RP, da Hora LF, Aum PTP. Study of agarose aggregate formation through rheological and DLS analyses. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04698-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Yin K, Divakar P, Wegst UGK. Plant-Derived Nanocellulose as Structural and Mechanical Reinforcement of Freeze-Cast Chitosan Scaffolds for Biomedical Applications. Biomacromolecules 2019; 20:3733-3745. [PMID: 31454234 PMCID: PMC6800197 DOI: 10.1021/acs.biomac.9b00784] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Despite considerable recent interest in micro- and nanofibrillated cellulose as constituents of lightweight structures and scaffolds for applications that range from thermal insulation to filtration, few systematic studies have been reported to date on structure-property-processing correlations in freeze-cast chitosan-nanocellulose composite scaffolds, in general, and their application in tissue regeneration, in particular. Reported in this study are the effects of the addition of plant-derived nanocellulose fibrils (CNF), crystals (CNCs), or a blend of the two (CNB) to the biopolymer chitosan on the structure and properties of the resulting composites. Chitosan-nanocellulose composite scaffolds were freeze-cast at 10 and 1 °C/min, and their microstructures were quantified in both the dry and fully hydrated states using scanning electron and confocal microscopy, respectively. The modulus, yield strength, and toughness (work to 60% strain) were determined in compression parallel and the modulus also perpendicular to the freezing direction to quantify anisotropy. Observed were the preferential alignments of CNCs and/or fibrils parallel to the freezing direction. Additionally, observed was the self-assembly of the nanocellulose into microstruts and microbridges between adjacent cell walls (lamellae), features that affected the mechanical properties of the scaffolds. When freeze-cast at 1 °C/min, chitosan-CNF scaffolds had the highest modulus, yield strength, toughness, and smallest anisotropy ratio, followed by chitosan and the composites made with the nanocellulose blend, and that with crystalline cellulose. These results illustrate that the nanocellulose additions homogenize the mechanical properties of the scaffold through cell-wall material self-assembly, on the one hand, and add architectural features such as bridges and pillars, on the other. The latter transfer loads and enable the scaffolds to resist deformation also perpendicular to the freezing direction. The observed property profile and the materials' proven biocompatibility highlight the promise of chitosan-nanocellulose composites for a large range of applications, including those for biomedical implants and devices.
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Affiliation(s)
- Kaiyang Yin
- Thayer School of Engineering , Dartmouth College , Hanover , New Hampshire 03755-4401 , United States
| | - Prajan Divakar
- Thayer School of Engineering , Dartmouth College , Hanover , New Hampshire 03755-4401 , United States
| | - Ulrike G K Wegst
- Thayer School of Engineering , Dartmouth College , Hanover , New Hampshire 03755-4401 , United States
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5
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Streck L, da Cruz PI, Fonseca JLC. Surface excess at water/air interface and micellization in solutions of an amphiphilic triblock copolymer. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1650759] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- L. Streck
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - P. I. da Cruz
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - J. L. C. Fonseca
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal, Brazil
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Dissolution behavior and conformation change of chitosan in concentrated chitosan hydrochloric acid solution and comparison with dilute and semidilute solutions. Int J Biol Macromol 2019; 121:1101-1108. [DOI: 10.1016/j.ijbiomac.2018.10.128] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/11/2018] [Accepted: 10/15/2018] [Indexed: 11/19/2022]
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7
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de Lima C, Gomes D, de Morais Filho J, Pereira M, Fonseca J. Anionic and cationic drug sorption on interpolyelectrolyte complexes. Colloids Surf B Biointerfaces 2018; 170:210-218. [DOI: 10.1016/j.colsurfb.2018.05.071] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/29/2018] [Accepted: 05/31/2018] [Indexed: 01/17/2023]
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Skwarczynska A, Kaminska M, Owczarz P, Bartoszek N, Walkowiak B, Modrzejewska Z. The structural (FTIR, XRD, and XPS) and biological studies of thermosensitive chitosan chloride gels with β-glycerophosphate disodium. J Appl Polym Sci 2018. [DOI: 10.1002/app.46459] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Agata Skwarczynska
- Department of Civil, Environmental Engineering and Architecture; Rzeszow University of Technology, Powstancow Warszawy 6; Rzeszow 35-959 Poland
| | - Marta Kaminska
- Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15; Lodz 90-924 Poland
| | - Piotr Owczarz
- Faculty of Process and Environmental Engineering; Lodz University of Technology, Wolczanska 175; Lodz 90-924 Poland
| | - Nina Bartoszek
- BioNanoPark Laboratories of Lodz Regional Park of Science and Technology, Dubois 144; Lodz 93-465 Poland
| | - Bogdan Walkowiak
- Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15; Lodz 90-924 Poland
- BioNanoPark Laboratories of Lodz Regional Park of Science and Technology, Dubois 144; Lodz 93-465 Poland
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Temperature and composition effects on the morphology of o/w dispersions based on poly(oxyethylene 20) sorbitan monolaurate and sorbitan monolaurate. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Preparation and characterization of dispersions based on chitosan and poly(styrene sulfonate). Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4099-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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11
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de Lima CRM, de Souza PRS, Stopilha RT, de Morais WA, Silva GTM, Nunes JS, Wanderley Neto AO, Pereira MR, Fonseca JLC. Formation and structure of chitosan–poly(sodium methacrylate) complex nanoparticles. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1296772] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- C. R. M. de Lima
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - P. R. S. de Souza
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - R. T. Stopilha
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - W. A. de Morais
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - G. T. M. Silva
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - J. S. Nunes
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - A. O. Wanderley Neto
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - M. R. Pereira
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - J. L. C. Fonseca
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
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Iselau F, Phan Xuan T, Trefalt G, Matic A, Holmberg K, Bordes R. Formation and relaxation kinetics of starch-particle complexes. SOFT MATTER 2016; 12:9509-9519. [PMID: 27853795 DOI: 10.1039/c6sm01312k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The formation and relaxation kinetics of starch-particle complexes were investigated in this study. The combination of cationic nanoparticles in suspension and anionic starch in solution gave rise to aggregate formation which was studied by dynamic light scattering, revealing the initial adsorption of the starch molecules on the particle surface. By examining the stability ratio, W, it was found that even in the most destabilized state, i.e. at charge neutralization, the starch chains had induced steric stabilization to the system. At higher particle and starch concentrations relaxation of the aggregates could be seen, as monitored by a decrease in turbidity with time. This relaxation was evaluated by fitting the data to the Kohlrausch-Williams-Watts function. It was found that irrespective of the starch to particle charge ratio the relaxation time was similar. Moreover, a molecular weight dependence on the relaxation time was found, as well as a more pronounced initial aggregated state for the higher molecular weight starch. This initial aggregate state could be due to bridging flocculation. With time, as the starch chains have relaxed into a final conformation on the particle surface, bridging will be less important and is gradually replaced by patches that will cause patchwise flocculation. After an equilibration time no molecular weight dependence on aggregation could be seen, which confirms the patchwise flocculation mechanism.
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Affiliation(s)
- Frida Iselau
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Göteborg, Sweden. and Kemira Kemi AB, 44240 Kungälv, Sweden
| | - Tuan Phan Xuan
- Department of Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - Gregor Trefalt
- Department of Inorganic and Analytical Chemistry, University of Geneva, Switzerland
| | - Aleksandar Matic
- Department of Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - Krister Holmberg
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Göteborg, Sweden.
| | - Romain Bordes
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Göteborg, Sweden. and Vinn Excellence Center SuMo Biomaterials, Chalmers University of Technology, 41296 Göteborg, Sweden.
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Photon correlation dynamics of unentangled star-shaped poly(ε-caprolactone)s with extremely small branches and its interaction with plasticization in miscible blend system. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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de Morais W, Silva G, Nunes J, Wanderley Neto A, Pereira M, Fonseca J. Interpolyelectrolyte complex formation: From lyophilic to lyophobic colloids. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.03.052] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Raghavan V, Gupta M, Xiao Z, Gi Chae H, Liu T, Kumar S. Investigation of polyacrylonitrile solution inhomogeneity by dynamic light scattering. POLYM ENG SCI 2015. [DOI: 10.1002/pen.24084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vijay Raghavan
- School of Materials Science and Engineering, Georgia Institute of Technology; Atlanta Georgia 30332
| | - Murari Gupta
- Department of Industrial and Manufacturing Engineering; High-Performance Materials Institute, Florida State University; Tallahassee Florida 32310
| | - Zhiwei Xiao
- Department of Industrial and Manufacturing Engineering; High-Performance Materials Institute, Florida State University; Tallahassee Florida 32310
| | - Han Gi Chae
- School of Materials Science and Engineering, Georgia Institute of Technology; Atlanta Georgia 30332
| | - Tao Liu
- Department of Industrial and Manufacturing Engineering; High-Performance Materials Institute, Florida State University; Tallahassee Florida 32310
| | - Satish Kumar
- School of Materials Science and Engineering, Georgia Institute of Technology; Atlanta Georgia 30332
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Dynamic and static radiation scattering in a microemulsion as a function of dispersed phase concentration. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.10.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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dos Santos Z, Pereira M, Fonseca J. Rheology and dynamic light scattering of octa-ethyleneglycol-monododecylether/chitosan solutions. Carbohydr Polym 2013; 98:321-30. [DOI: 10.1016/j.carbpol.2013.05.092] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 05/28/2013] [Accepted: 05/31/2013] [Indexed: 10/26/2022]
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Equilibrium and kinetic aspects of sodium cromoglycate adsorption on chitosan: mass uptake and surface charging considerations. Colloids Surf B Biointerfaces 2013; 109:52-8. [PMID: 23608469 DOI: 10.1016/j.colsurfb.2013.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 03/19/2013] [Indexed: 11/20/2022]
Abstract
Chitosan has more and more been suggested as a material for use as adsorbent in the treatment of effluents as well as in the synthesis of drug-loaded nanoparticles for controlled release. In both cases, a good understanding of the process of adsorption, both kinetically and in terms of equilibrium, has an importance of its own. In this manuscript we study the interaction between sodium cromoglycate, a drug used in asthma treatment, and chitosan. Equilibrium experiments showed that Sips (or Freundlich-Langmuir) isotherm described well the resultant data and adsorption possibly occurred as in multilayers. A model based on ordinary reaction-rate theory, compounded of two processes, each one with a correlated velocity constant, described the kinetics of sorption. Kinetic and equilibrium data suggested the possibility of surface rearrangement, favored by the increase of temperature.
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