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Kinetics, isotherms and thermodynamics of oil spills removal by novel amphiphilic Chitosan-g-Octanal Schiff base polymer developed by click grafting technique. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04260-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractKinetic, isothermal and thermodynamic studies for the oil spills removal process have been conducted by Chitosan and novel amphiphilic Chitosan-g-Octanal Schiff base adsorbents developed by click chemistry and evaluated successfully in the removal of heavy crude oil spills. Chitosan was first prepared from wastes of marine shrimp shells, and then Chitosan and Chitosan-g-Octanal Schiff base adsorbents were synthesized and verified their structures, thermal stability and their morphological changes using FT-IR spectroscopy, TGA and SEM. The oil adsorption percentages (%) using heavy crude oil were 96.41% for the Chitosan-g-Octanal Schiff base adsorbent compared to 64.99% for native Chitosan counterpart. High rate of adsorption was observed where 40% of oil adsorbed within 15 min only using the Chitosan-g-Octanal Schiff base adsorbent compared to 90 min for native Chitosan adsorbent. The adsorption process followed the pseudo-second order model, and the equilibrium data were sufficiently fitted with the Langmuir model with a maximum adsorption capacity 30.30 g/g at 25 °C. Thermodynamic parameters computed from Van’t Hoff plot confirmed the process to be endothermic, favorable and spontaneous.
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Tamer TM, Eweida BY, Omer AM, Soliman HM, Ali SM, Zaatot AA, Mohy-Eldin MS. Removal of oil spills by novel amphiphilic Chitosan-g-Octanal Schiff base polymer developed by click grafting technique. JOURNAL OF SAUDI CHEMICAL SOCIETY 2021. [DOI: 10.1016/j.jscs.2021.101369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vodopivec AA, Chen Y, Russo PS, Hung FR. Molecular Dynamics Simulations of Nanostructures Formed by Hydrophobins and Oil in Seawater. J Phys Chem B 2021; 125:7886-7899. [PMID: 34236182 DOI: 10.1021/acs.jpcb.1c02040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Classical molecular dynamics simulations using the Martini coarse-grained force field were performed to study oil nanodroplets surrounded by fungal hydrophobin (HP) proteins in seawater. The class I EAS and the class II HFBII HPs were studied along with two model oils, namely, benzene and n-decane. Both HPs exhibit free energy minima at the oil-seawater interface, which is deeper in benzene compared to the n-decane systems. Larger constraint forces are required to keep both HPs within the n-decane phase compared to inside benzene, with HFBII being more affine to benzene compared to EAS. Smaller surface tensions are observed at benzene-seawater interfaces coated with HPs compared to their n-decane counterparts. In the latter the surface tension remains unchanged upon increases in the concentration of HPs, whereas in benzene systems adding more HPs lead to decreases in surface tension. EAS has a larger tendency to cluster together in the interface compared to HFBII, with both HPs having larger coordination numbers when surrounding benzene droplets compared to when they are around n-decane nanoblobs. The HP-oil nanostructures in seawater examined have radii of gyration ranging between 2 and 12 nm, where the n-decane structures are larger and have more irregular shapes compared to the benzene systems. The n-decane molecules within the nanostructures form a compact spherical core, with the HPs partially covering its surface and clustering together, conferring irregular shapes to the nanostructures. The EAS with n-decane structures are larger and have more irregular shapes compared to their HFBII counterparts. In contrast, in the HP-benzene structures both HPs tend to penetrate the oil part of the droplet. The HFBII-benzene structures having the larger oil/HP ratios examined tend to be more compact and spherical compared to their EAS counterparts; however, some of the HFBII-benzene systems that have smaller oil/HP ratios have a more elongated structure compared to their EAS counterparts. This simulation study provides insights into HP-oil nanostructures that are smaller than the oil droplets and gas bubbles recently studied in experiments and, thus, might be challenging to examine with experimental techniques.
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Affiliation(s)
- Andrés A Vodopivec
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yuwu Chen
- Center for Computation and Technology, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Paul S Russo
- School of Materials Science and Engineering and School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Francisco R Hung
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
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Singhal A, Schneible JD, Lilova RL, Hall CK, Menegatti S, Grafmüller A. A multiscale coarse-grained model to predict the molecular architecture and drug transport properties of modified chitosan hydrogels. SOFT MATTER 2020; 16:10591-10610. [PMID: 33156313 DOI: 10.1039/d0sm01243b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hydrogels constructed with functionalized polysaccharides are of interest in a multitude of applications, chiefly the design of therapeutic and regenerative formulations. Tailoring the chemical modification of polysaccharide-based hydrogels to achieve specific drug release properties involves the optimization of many tunable parameters, including (i) the type, degree (χ), and pattern of the functional groups, (ii) the water-polymer ratio, and (iii) the drug payload. To guide the design of modified polysaccharide hydrogels for drug release, we have developed a computational toolbox that predicts the structure and physicochemical properties of acylated chitosan chains, and their impact on the transport of drug molecules. Herein, we present a multiscale coarse-grained model to investigate the structure of networks of chitosan chains modified with acetyl, butanoyl, or heptanoyl moieties, as well as the diffusion of drugs doxorubicin (Dox) and gemcitabine (Gem) through the resulting networks. The model predicts the formation of different network structures, in particular the hydrophobically-driven transition from a uniform to a cluster/channel morphology and the formation of fibers of chitin chains. The model also describes the impact of structural and physicochemical properties on drug transport, which was confirmed experimentally by measuring Dox and Gem diffusion through an ensemble of modified chitosan hydrogels.
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Affiliation(s)
- Ankush Singhal
- Department of Theory and Biosystems, Max Planck Institute for Colloids and Interfaces, Potsdam 14476, Germany.
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Doshi B, Hietala S, Sirviö JA, Repo E, Sillanpää M. A powdered orange peel combined carboxymethyl chitosan and its acylated derivative for the emulsification of marine diesel and 2T-oil with different qualities of water. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111327] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kalliola S, Repo E, Srivastava V, Zhao F, Heiskanen JP, Sirviö JA, Liimatainen H, Sillanpää M. Carboxymethyl Chitosan and Its Hydrophobically Modified Derivative as pH-Switchable Emulsifiers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2800-2806. [PMID: 29406746 PMCID: PMC6150725 DOI: 10.1021/acs.langmuir.7b03959] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 01/09/2018] [Indexed: 05/23/2023]
Abstract
The emulsification properties of carboxymethyl chitosan (CMChi) and hydrophobically modified carboxymethyl chitosan (h-CMChi) were studied as a function of pH and dodecane/water ratio. The pH was varied between 6-10, and the oil/water ratio between 0.1-2.0. In CMChi solution, the emulsion stability increased as the pH was lowered from 10 to 7, and the phase inversion was shifted from oil/water ratio 1.0 to 1.8, respectively. The system behaved differently in pH 6 due to the aggregation of CMChi and the formation of nanoparticles (∼200-300 nm). No phase inversion was observed and the maximum amount of emulsified oil was reached at oil/water ratio 1.2. The h-CMChi showed similar behavior as a function of pH but, due to hydrophobic modification, the phase inversion was shifted to higher values in pH 7-10. In pH 6, the behavior was similar, but the maximum amount of emulsified oil was higher compared to CMChi. The amount of adsorbed particles correlated with the emulsified amount of oil. Reversible emulsification of dodecane was demonstrated by pH adjustment using CMChi and h-CMChi solutions. The formed emulsions were gel-like, suggesting particle-particle interaction.
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Affiliation(s)
- Simo Kalliola
- Lappeenranta
University of Technology, Sammonkatu 12, Mikkeli FI-50130, Finland
| | - Eveliina Repo
- Lappeenranta
University of Technology, Sammonkatu 12, Mikkeli FI-50130, Finland
| | - Varsha Srivastava
- Lappeenranta
University of Technology, Sammonkatu 12, Mikkeli FI-50130, Finland
| | - Feiping Zhao
- Lappeenranta
University of Technology, Sammonkatu 12, Mikkeli FI-50130, Finland
| | - Juha P. Heiskanen
- Research
Unit of Sustainable Chemistry, University
of Oulu, P.O. Box 3000, Oulu FI-90014, Finland
| | - Juho Antti Sirviö
- Fibre
and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, Oulu FI-90014, Finland
| | - Henrikki Liimatainen
- Fibre
and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, Oulu FI-90014, Finland
| | - Mika Sillanpää
- Lappeenranta
University of Technology, Sammonkatu 12, Mikkeli FI-50130, Finland
- Department
of Civil and Environmental Engineering, Florida International University, Miami, Florida 33174, United States
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Wang J, Gayatri MA, Ferguson AL. Mesoscale Simulation and Machine Learning of Asphaltene Aggregation Phase Behavior and Molecular Assembly Landscapes. J Phys Chem B 2017; 121:4923-4944. [DOI: 10.1021/acs.jpcb.7b02574] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jiang Wang
- Department
of Physics, University of Illinois Urbana−Champaign, 1110 West Green Street, Urbana, Illinois 61801, United States
| | - Mohit A. Gayatri
- Department
of Chemical and Biomolecular Engineering, University of Illinois Urbana−Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Andrew L. Ferguson
- Department
of Chemical and Biomolecular Engineering, University of Illinois Urbana−Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
- Department
of Materials Science and Engineering, University of Illinois Urbana−Champaign, 1304 West Green Street, Urbana, Illinois 61801, United States
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Benner SW, Hall CK. Nanoparticle-induced assembly of hydrophobically modified chitosan. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1290235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Steven W. Benner
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Carol K. Hall
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
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Benner SW, Hall CK. Development of a Coarse-Grained Model of Chitosan for Predicting Solution Behavior. J Phys Chem B 2016; 120:7253-64. [DOI: 10.1021/acs.jpcb.6b03407] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Steven W. Benner
- Department of Chemical and
Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Carol K. Hall
- Department of Chemical and
Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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Zhu J, Liu B, Li L, Zeng Z, Zhao W, Wang G, Guan X. Simple and Green Fabrication of a Superhydrophobic Surface by One-Step Immersion for Continuous Oil/Water Separation. J Phys Chem A 2016; 120:5617-23. [DOI: 10.1021/acs.jpca.6b06146] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jingfang Zhu
- School of Materials
Science and Engineering, North University of China, Taiyuan 030051, People’s Republic of China
- Key Laboratory of Marine
Materials and Related Technologies, Zhejiang Key Laboratory of Marine
Materials and Protective Technologies, Ningbo Institute of Materials
Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Bin Liu
- School of Materials
Science and Engineering, North University of China, Taiyuan 030051, People’s Republic of China
| | - Longyang Li
- Key Laboratory of Marine
Materials and Related Technologies, Zhejiang Key Laboratory of Marine
Materials and Protective Technologies, Ningbo Institute of Materials
Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Zhixiang Zeng
- Key Laboratory of Marine
Materials and Related Technologies, Zhejiang Key Laboratory of Marine
Materials and Protective Technologies, Ningbo Institute of Materials
Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Wenjie Zhao
- Key Laboratory of Marine
Materials and Related Technologies, Zhejiang Key Laboratory of Marine
Materials and Protective Technologies, Ningbo Institute of Materials
Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Gang Wang
- Key Laboratory of Marine
Materials and Related Technologies, Zhejiang Key Laboratory of Marine
Materials and Protective Technologies, Ningbo Institute of Materials
Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
| | - Xiaoyan Guan
- Key Laboratory of Marine
Materials and Related Technologies, Zhejiang Key Laboratory of Marine
Materials and Protective Technologies, Ningbo Institute of Materials
Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China
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Ribeiro AJ, de Souza FRL, Bezerra JMNA, Oliveira C, Nadvorny D, de La Roca Soares MF, Nunes LCC, Silva-Filho EC, Veiga F, Soares Sobrinho JL. Gums' based delivery systems: Review on cashew gum and its derivatives. Carbohydr Polym 2016; 147:188-200. [PMID: 27178924 DOI: 10.1016/j.carbpol.2016.02.042] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 02/06/2016] [Accepted: 02/14/2016] [Indexed: 11/28/2022]
Abstract
The development of delivery systems using natural polymers such as gums offers distinct advantages, such as, biocompatibility, biodegradability, and cost effectiveness. Cashew gum (CG) has rheological and mucoadhesive properties that can find many applications, among which the design of delivery systems for drugs and other actives such as larvicide compounds. In this review CG is characterized from its source through to the process of purification and chemical modification highlighting its physicochemical properties and discussing its potential either for micro and nanoparticulate delivery systems. Chemical modifications of CG increase its reactivity towards the design of delivery systems, which provide a sustained release effect for larvicide compounds. The purification and, the consequent characterization of CG either original or modified are of utmost importance and is still a continuing challenge when selecting the suitable CG derivative for the delivery of larvicide compounds.
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Affiliation(s)
- António J Ribeiro
- Faculdade de Farmácia, Universidade de Coimbra, 3000-548 Coimbra, Portugal; I3S, Instituto de Investigação e Inovação em Saúde, IBMC-Instituto de Biologia Molecular e Celular, Genetics of Cognitive Dysfunction, Rua do Campo Alegre 823, 4150-180 Porto, Portugal.
| | - Flávia R Lucena de Souza
- Núcleo de Controle de Qualidade de Medicamentos e Correlatos-NCQMC, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco-UFPE, Brazil
| | - Janira M N A Bezerra
- Núcleo de Controle de Qualidade de Medicamentos e Correlatos-NCQMC, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco-UFPE, Brazil
| | - Claudia Oliveira
- Faculdade de Farmácia, Universidade de Coimbra, 3000-548 Coimbra, Portugal; I3S, Instituto de Investigação e Inovação em Saúde, IBMC-Instituto de Biologia Molecular e Celular, Genetics of Cognitive Dysfunction, Rua do Campo Alegre 823, 4150-180 Porto, Portugal
| | - Daniela Nadvorny
- Núcleo de Controle de Qualidade de Medicamentos e Correlatos-NCQMC, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco-UFPE, Brazil
| | - Monica F de La Roca Soares
- Núcleo de Controle de Qualidade de Medicamentos e Correlatos-NCQMC, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco-UFPE, Brazil
| | - Lívio C C Nunes
- Laboratório Interdisciplinar de Materiais Avançados-LIMAV, Centro de Ciências da Natureza-CCN, Universidade Federal do Piauí-UFPI, Brazil
| | - Edson C Silva-Filho
- Laboratório Interdisciplinar de Materiais Avançados-LIMAV, Centro de Ciências da Natureza-CCN, Universidade Federal do Piauí-UFPI, Brazil
| | - Francisco Veiga
- CNC.IBILI, Universidade de Coimbra, 3000-548 Coimbra, Portugal; Faculdade de Farmácia, Universidade de Coimbra, 3000-548 Coimbra, Portugal
| | - José L Soares Sobrinho
- Núcleo de Controle de Qualidade de Medicamentos e Correlatos-NCQMC, Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco-UFPE, Brazil
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