1
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Katana B, Baptista J, Schneider R, de Oliveira RJ, Szilágyi I. The Impact of Polyphosphates on the Colloidal Stability of Laponite Particles. J Phys Chem B 2024; 128:6957-6965. [PMID: 38980009 PMCID: PMC11264265 DOI: 10.1021/acs.jpcb.4c03193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 07/01/2024] [Accepted: 07/03/2024] [Indexed: 07/10/2024]
Abstract
The effect of polyphosphate (polyP) adsorption on the colloidal properties of disc-shaped laponite (LRD) particles was examined in aqueous dispersions with a focus on elucidating the interparticle forces that govern the colloidal stability of the systems. The charge and aggregation rate data of bare LRD exhibited an ionic strength-dependent trend, confirming the presence of double-layer repulsion and van der Waals attraction as major surface interactions. The charge of LRD particles significantly increased in magnitude at elevated polyP concentrations as a result of polyP adsorption and subsequent overcharging of the positively charged sites on the edges of the LRD discs. A transition from stable to unstable LRD colloids was observed with increasing polyP doses indicating the formation of aggregates in the latter systems due to depletion forces and/or bridging interactions induced by dissolved or adsorbed polyP, respectively. The degree of phosphate polymerization influenced neither the charge nor the aggregation mechanism. The findings clearly confirm that polyP adsorption was the driving phenomenon to induce particle aggregation in contrast to other clay types, where phosphate derivatives act as dispersion stabilizing agents. This study provides valuable insights into the early stages of aggregation in colloidal systems involving LRD and polyPs, which have a crucial role in predicting further material properties that are important to designing LRD-polyP composites for applications such as potential phosphate sources in chemical fertilizers.
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Affiliation(s)
- Bojana Katana
- MTA-SZTE
Momentum Biocolloids Research Group, Department of Physical Chemistry
and Materials Science, Interdisciplinary Centre of Excellence, University of Szeged, 6720 Szeged, Hungary
| | - João Baptista
- Group
of Polymers and Nanostructures, Federal
Technological University of Paraná − UTFPR, 85902-490 Toledo, Paraná, Brazil
- Chemical
Engineering, University of São Paulo
− USP, 05508-800 São Paulo, Brazil
| | - Ricardo Schneider
- Group
of Polymers and Nanostructures, Federal
Technological University of Paraná − UTFPR, 85902-490 Toledo, Paraná, Brazil
| | - Rodrigo José de Oliveira
- Physical
Chemistry of Materials Group, State University
of Paraíba − UEPB, 58429-500 Campina Grande, Paraíba, Brazil
| | - István Szilágyi
- MTA-SZTE
Momentum Biocolloids Research Group, Department of Physical Chemistry
and Materials Science, Interdisciplinary Centre of Excellence, University of Szeged, 6720 Szeged, Hungary
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2
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Brunchi CE, Morariu S. Laponite ®-From Dispersion to Gel-Structure, Properties, and Applications. Molecules 2024; 29:2823. [PMID: 38930887 PMCID: PMC11206873 DOI: 10.3390/molecules29122823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/05/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Laponite® (LAP) is an intensively studied synthetic clay due to the versatility given by its layered structure, which makes it usable in various applications. This review describes the multifaceted properties and applications of LAP in aqueous dispersions and gel systems. The first sections of the review discuss the LAP structure and the interactions between clay discs in an aqueous medium under different conditions (such as ionic strength, pH, temperature, and the addition of polymers) in order to understand the function of clay in tailoring the properties of the designed material. Additionally, the review explores the aging phenomenon characteristic of LAP aqueous dispersions as well as the development of shake-gels by incorporating LAP. The second part shows the most recent studies on materials containing LAP with possible applicability in the drilling industry, cosmetics or care products industry, and biomedical fields. By elucidating the remarkable versatility and ease of integration of LAP into various matrices, this review underscores its significance as a key ingredient for the creation of next-generation materials with tailored functionalities.
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Affiliation(s)
| | - Simona Morariu
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania;
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3
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de Barros NR, Gangrade A, Elsebahy A, Chen R, Zehtabi F, Ermis M, Falcone N, Haghniaz R, Khosravi S, Gomez A, Huang S, Mecwan M, Khorsandi D, Lee J, Zhu Y, Li B, Kim H, Thankam FG, Khademhosseini A. Injectable Nanoengineered Adhesive Hydrogel for Treating Enterocutaneous Fistulas. Acta Biomater 2024; 173:231-246. [PMID: 38465268 PMCID: PMC10919932 DOI: 10.1016/j.actbio.2023.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Enterocutaneous fistula (ECF) is a severe medical condition where an abnormal connection forms between the gastrointestinal tract and skin. ECFs are, in most cases, a result of surgical complications such as missed enterotomies or anastomotic leaks. The constant leakage of enteric and fecal contents from the fistula site leads to skin breakdown and increases the risk of infection. Despite advances in surgical techniques and postoperative management, ECF accounts for significant mortality rates, estimated between 15-20%, and causes debilitating morbidity. Therefore, there is a critical need for a simple and effective method to seal and heal ECF. Injectable hydrogels with combined properties of robust mechanical properties and cell infiltration/proliferation have the potential to block and heal ECF. Herein, we report the development of an injectable nanoengineered adhesive hydrogel (INAH) composed of a synthetic nanosilicate (Laponite®) and a gelatin-dopamine conjugate for treating ECF. The hydrogel undergoes fast cross-linking using a co-injection method, resulting in a matrix with improved mechanical and adhesive properties. INAH demonstrates appreciable blood clotting abilities and is cytocompatible with fibroblasts. The adhesive properties of the hydrogel are demonstrated in ex vivo adhesion models with skin and arteries, where the volume stability in the hydrated internal environment facilitates maintaining strong adhesion. In vivo assessments reveal that the INAH is biocompatible, supporting cell infiltration and extracellular matrix deposition while not forming fibrotic tissue. These findings suggest that this INAH holds promising translational potential for sealing and healing ECF.
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Affiliation(s)
- Natan Roberto de Barros
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Ankit Gangrade
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Ahmad Elsebahy
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - RunRun Chen
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Fatemeh Zehtabi
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Menekse Ermis
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Natashya Falcone
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Reihaneh Haghniaz
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Safoora Khosravi
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Alejandro Gomez
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Shuyi Huang
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Marvin Mecwan
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Danial Khorsandi
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Junmin Lee
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Yangzhi Zhu
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - Bingbing Li
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
| | - HanJun Kim
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
- College of Pharmacy, Korea University, Sejong, Republic of Korea, 30019
| | - Finosh G Thankam
- Department of Translational Research, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, California, USA
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4
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Ruiz-Hitzky E, Ruiz-Garcia C. MXenes vs. clays: emerging and traditional 2D layered nanoarchitectonics. NANOSCALE 2023; 15:18959-18979. [PMID: 37937945 DOI: 10.1039/d3nr03037g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Although MXene materials are considered an emerging research topic, they are receiving considerable interest because, like metals and graphene, they are good electronic conductors but with the particularity that they have a marked hydrophilic character. Having a structural organization and properties close to those of clay minerals (natural silicates typically with a lamellar morphology), they are sometimes referred to as "conducting clays" and exhibit colloidal, surface and intercalation properties also similar to those of clay minerals. The present contribution aims to inform and discuss the nature of MXenes in comparison with clay phyllosilicates, taking into account their structural analogies, outstanding surface properties and advanced applications. The current in-depth understanding of clay minerals may represent a basis for the future development of MXene-derived nanoarchitectures. Comparative examples of the preparation, and studies on the properties and applications of various nanoarchitectures based on clays and MXenes have been included in the present work.
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Affiliation(s)
- Eduardo Ruiz-Hitzky
- Materials Science Institute of Madrid, CSIC, c/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
| | - Cristina Ruiz-Garcia
- Chemical Engineering Department, Faculty of Science, c/Francisco Tomás y Valiente 7, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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5
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Ramnarine-Sanchez RS, Kanczler JM, Evans ND, Oreffo ROC, Dawson JI. Self-Assembly of Structured Colloidal Gels for High-Resolution 3D Micropatterning of Proteins at Scale. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304461. [PMID: 37658732 DOI: 10.1002/adma.202304461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Indexed: 09/05/2023]
Abstract
Self-assembly, the spontaneous ordering of components into patterns, is widespread in nature and fundamental to generating function across length scales. Morphogen gradients in biological development are paradigmatic as both products and effectors of self-assembly and various attempts have been made to reproduce such gradients in biomaterial design. To date, approaches have typically utilized top-down fabrication techniques that, while allowing high-resolution control, are limited by scale and require chemical cross-linking steps to stabilize morphogen patterns in time. Here, a bottom-up approach to protein patterning is developed based on a novel binary reaction-diffusion process where proteins function as diffusive reactants to assemble a nanoclay-protein composite hydrogel. Using this approach, it is possible to generate scalable and highly stable 3D patterns of target proteins down to sub-cellular resolution through only physical interactions between clay nanoparticles and the proteins and ions present in blood. Patterned nanoclay gels are able to guide cell behavior to precisely template bone tissue formation in vivo. These results demonstrate the feasibility of stabilizing 3D gradients of biological signals through self-assembly processes and open up new possibilities for morphogen-based therapeutic strategies and models of biological development and repair.
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Affiliation(s)
- Roxanna S Ramnarine-Sanchez
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
| | - Janos M Kanczler
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
| | - Nicholas D Evans
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
| | - Richard O C Oreffo
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
| | - Jonathan I Dawson
- Faculty of Medicine, Department of Human Development and Health, University of Southampton, Southampton, SO16 6YD, UK
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6
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de Barros NR, Gomez A, Ermis M, Falcone N, Haghniaz R, Young P, Gao Y, Aquino AF, Li S, Niu S, Chen R, Huang S, Zhu Y, Eliahoo P, Sun A, Khorsandi D, Kim J, Kelber J, Khademhosseini A, Kim HJ, Li B. Gelatin methacryloyl and Laponite bioink for 3D bioprinted organotypic tumor modeling. Biofabrication 2023; 15:10.1088/1758-5090/ace0db. [PMID: 37348491 PMCID: PMC10683563 DOI: 10.1088/1758-5090/ace0db] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/22/2023] [Indexed: 06/24/2023]
Abstract
Three-dimensional (3D)in vitrotumor models that can capture the pathophysiology of human tumors are essential for cancer biology and drug development. However, simulating the tumor microenvironment is still challenging because it consists of a heterogeneous mixture of various cellular components and biological factors. In this regard, current extracellular matrix (ECM)-mimicking hydrogels used in tumor tissue engineering lack physical interactions that can keep biological factors released by encapsulated cells within the hydrogel and improve paracrine interactions. Here, we developed a nanoengineered ion-covalent cross-linkable bioink to construct 3D bioprinted organotypic tumor models. The bioink was designed to implement the tumor ECM by creating an interpenetrating network composed of gelatin methacryloyl (GelMA), a light cross-linkable polymer, and synthetic nanosilicate (Laponite) that exhibits a unique ionic charge to improve retention of biological factors released by the encapsulated cells and assist in paracrine signals. The physical properties related to printability were evaluated to analyze the effect of Laponite hydrogel on bioink. Low GelMA (5%) with high Laponite (2.5%-3.5%) composite hydrogels and high GelMA (10%) with low Laponite (1.0%-2.0%) composite hydrogels showed acceptable mechanical properties for 3D printing. However, a low GelMA composite hydrogel with a high Laponite content could not provide acceptable cell viability. Fluorescent cell labeling studies showed that as the proportion of Laponite increased, the cells became more aggregated to form larger 3D tumor structures. Reverse transcription-polymerase chain reaction (RT-qPCR) and western blot experiments showed that an increase in the Laponite ratio induces upregulation of growth factor and tissue remodeling-related genes and proteins in tumor cells. In contrast, cell cycle and proliferation-related genes were downregulated. On the other hand, concerning fibroblasts, the increase in the Laponite ratio indicated an overall upregulation of the mesenchymal phenotype-related genes and proteins. Our study may provide a rationale for using Laponite-based hydrogels in 3D cancer modeling.
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Affiliation(s)
- Natan Roberto de Barros
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Alejandro Gomez
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
- Department of Biology, California State University, Northridge, CA 91330, United States of America
| | - Menekse Ermis
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Department of Biology, Baylor University, 101 Bagby Ave, TX 76706, United Ustates of America
| | - Natashya Falcone
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Reihaneh Haghniaz
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Patric Young
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Yaqi Gao
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
| | - Albert-Fred Aquino
- Department of Biology, California State University, Northridge, CA 91330, United States of America
| | - Siyuan Li
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
- METU Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Siyi Niu
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
- Department of Biomedical Engineering, Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC 27101, United States of America
| | - RunRun Chen
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
| | - Shuyi Huang
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
| | - Yangzhi Zhu
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Payam Eliahoo
- Department of Biology, University of California, Irvine, CA 92697, United States of America
| | - Arthur Sun
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
- College of Pharmacy, Korea University, Sejong 30019, Republic of Korea
| | - Danial Khorsandi
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Jinjoo Kim
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Jonathan Kelber
- Department of Biology, California State University, Northridge, CA 91330, United States of America
- Department of Integrative Biology, University of California, Berkeley, CA 94720, United States of America
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Han-Jun Kim
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- College of Pharmacy, Korea University, Sejong 30019, Republic of Korea
| | - Bingbing Li
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
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7
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Shen J, Bhatia SR. Dynamics and microrheology of colloidal clay-polymer glasses and gels: Size-dependent phenomena and re-entrant behavior at early aging times. J Chem Phys 2023; 158:054904. [PMID: 36754815 DOI: 10.1063/5.0130816] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Colloidal clay Laponite forms a variety of arrested states that display interesting aging behavior. Microrheology has been applied to Laponite-based glasses and gels, but few studies evaluate the influence of probe particle size. In this work, we report the dynamics and microrheology of Laponite-polymer dispersions during aging using passive microrheology with three different probe particle sizes. At early aging times, the neat Laponite dispersion forms an arrested state; the nature of this state (e.g., a repulsive glass or gel) has remained the subject of debate. The addition of polymer retards gelation and melts the arrested state. While this melting has been observed at the macroscale and has been attributed to a re-entrant transition of a repulsive glass to a liquid state, to our knowledge, it has not been observed at the microscale. The delay of the gelation time needed to form an arrested state was found to depend on the polymer concentration and could vary from ∼24 h for neat Laponite to seven days for some Laponite-polymer samples. Significant effects of probe particle sizes are observed from the mean-squared displacement (MSD) curves as small and intermediate probe particles show diffusive motion, while the motion of large particles is restricted. By examining the factor of ⟨Δr2 (τ)⟩a, structural heterogeneity can be confirmed through the strong size-dependence displayed. Different MSD trends of probe particles are obtained at longer aging times, but no significant changes occur after 30 days of aging. Our microrheology results also reveal significant effects of probe particle size.
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Affiliation(s)
- Jiachun Shen
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, USA
| | - Surita R Bhatia
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, USA
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8
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Riazi F, Tehrani MM, Lammers V, Heinz V, Savadkoohi S. Unexpected morphological modifications in high moisture extruded pea-flaxseed proteins: Part I, topological and conformational characteristics, textural attributes, and viscoelastic phenomena. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Podaru IA, Stănescu PO, Ginghină R, Stoleriu Ş, Trică B, Şomoghi R, Teodorescu M. Poly(N-vinylpyrrolidone)-Laponite XLG Nanocomposite Hydrogels: Characterization, Properties and Comparison with Divinyl Monomer-Crosslinked Hydrogels. Polymers (Basel) 2022; 14:polym14194216. [PMID: 36236165 PMCID: PMC9571604 DOI: 10.3390/polym14194216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/03/2022] [Accepted: 10/04/2022] [Indexed: 11/12/2022] Open
Abstract
The present work investigates, for the first time, the synthesis and properties of some nanocomposite (NC) hydrogels obtained by the aqueous solution free radical polymerization of N-vinylpyrrolidone (NVP) in the presence of Laponite XLG (XLG) as a crosslinker, in comparison with the corresponding hydrogels prepared by using two conventional crosslinking divinyl monomers: N,N'-methylenebisacrylamide (MBA) and tri(ethylene glycol) divinyl ether (DVE). The structure and properties of the hydrogels were studied by FTIR, TEM, XRD, SEM, swelling and rheological and compressive mechanical measurements. The results showed that DVE and XLG are much better crosslinking agents for the synthesis of PNVP hydrogels than MBA, leading to larger gel fractions and more homogeneous network hydrogels. The hydrogels crosslinked by either DVE or XLG displayed comparable viscoelastic and compressive mechanical properties under the experimental conditions employed. The properties of the XLG-crosslinked hydrogels steadily improved as the clay content increased. The addition of XLG as a second crosslinker together with a divinyl monomer strongly enhanced the material properties in comparison with the hydrogels crosslinked by only one of the crosslinkers involved. The FTIR analyses suggested that the crosslinking of the NC hydrogels was the result of two different interactions occurring between the clay platelets and the PNVP chains. Laponite XLG displayed a uniform distribution within the NC hydrogels, the clay being mostly exfoliated. However, a small number of platelet agglomerations were still present. The PNVP hydrogels described here may find applications for water purification and in the biomedical field as drug delivery systems or wound dressings.
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Affiliation(s)
- Ionela Alice Podaru
- Department of Bioresources and Polymer Science, Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
- Armament Systems and Mechatronics Department, Military Technical Academy “Ferdinand I”, 39–49 G. Cosbuc Blvd., 050141 Bucharest, Romania
| | - Paul O. Stănescu
- Department of Bioresources and Polymer Science, Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
- Advanced Polymer Materials Group, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
| | - Raluca Ginghină
- Chemical Technologies for CBRN Defense Department, Research and Innovation Center for CBRN Defense and Ecology, 225 Olteniţei Ave., 041327 Bucharest, Romania
| | - Ştefania Stoleriu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
| | - Bogdan Trică
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, Spl. Independentei 202, 060021 Bucharest, Romania
| | - Raluca Şomoghi
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, Spl. Independentei 202, 060021 Bucharest, Romania
- Faculty of Petroleum Technology and Petrochemistry, Petroleum and Gas University of Ploiesti, 39 Bucuresti Blvd., 100680 Ploiesti, Romania
| | - Mircea Teodorescu
- Department of Bioresources and Polymer Science, Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, 1–7 Gh. Polizu Str., 011061 Bucharest, Romania
- Correspondence: ; Tel.: +40-7-4590-7871
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10
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Zheng SS, Zhao J, Chen JW, Shen XH, Hong XL, Fu GS, Fu JY. Inhibition of neointimal hyperplasia in balloon-induced vascular injuries in a rat model by miR-22 loading Laponite hydrogels. BIOMATERIALS ADVANCES 2022; 142:213140. [PMID: 36228507 DOI: 10.1016/j.bioadv.2022.213140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 09/26/2022] [Accepted: 10/02/2022] [Indexed: 11/05/2022]
Abstract
Percutaneous coronary intervention (PCI) is the mainstream treatment to widen narrowed or obstructed coronary arteries due to pathological conditions. However, the post-operational neointimal hyperplasia occurs because of endothelium denudation during surgical procedures and the following inflammation. MicroRNAs (miRs) are new therapeutics of great potential for cardiovascular diseases. However, miRs easily degrade in vivo. A vehicle that can maintain their bioactivities and extend their retention at the site of delivery is prerequisite for miRs to play their roles as therapeutic reagents. Here, we reported the use of the Laponite hydrogels to deliver miR-22 that are modulators of phenotypes of smooth muscle cells (SMCs). The Laponite hydrogels allow a homogenous distribution of miR-22 within the gels, which had the capacity to transfect SMCs in vitro. Upon the injection of the miR-22 incorporated in the Laponite hydrogels in vivo, miR-22 could be well retained surrounding arteries for at least 7 days. Moreover, the miR-22 loading Laponite hydrogels inhibited the neointimal formation, reduced the infiltration of the macrophages, and reversed the adverse vascular ECM remodeling after the balloon-induced vascular injuries by upregulation of miR-22 and downregulation of its target genes methyl-CpG binding protein 2 (MECP2). The application of the Laponite hydrogels for miR local delivery may offer a novel strategy to treat cardiovascular diseases.
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Affiliation(s)
- Si-Si Zheng
- Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China
| | - Jing Zhao
- Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China
| | - Jia-Wen Chen
- Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China
| | - Xiao-Hua Shen
- Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China
| | - Xu-Lin Hong
- Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China
| | - Guo-Sheng Fu
- Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China.
| | - Jia-Yin Fu
- Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China.
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11
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Kiaee G, Dimitrakakis N, Sharifzadeh S, Kim HJ, Avery RK, Moghaddam KM, Haghniaz R, Yalcintas EP, Barros NRD, Karamikamkar S, Libanori A, Khademhosseini A, Khoshakhlagh P. Laponite-Based Nanomaterials for Drug Delivery. Adv Healthc Mater 2022; 11:e2102054. [PMID: 34990081 PMCID: PMC8986590 DOI: 10.1002/adhm.202102054] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/29/2021] [Indexed: 11/09/2022]
Abstract
Laponite is a clay-based material composed of synthetic disk-shaped crystalline nanoparticles with highly ionic, large surface area. These characteristics enable the intercalation and dissolution of biomolecules in Laponite-based drug delivery systems. Furthermore, Laponite's innate physicochemical properties and architecture enable the development of tunable pH-responsive drug delivery systems. Laponite's coagulation capacity and cation exchangeability determine its exchange capabilities, drug encapsulation efficiency, and release profile. These parameters are exploited to design highly controlled and efficacious drug delivery platforms for sustained drug release. In this review, they provide an overview of how to design efficient delivery of therapeutics by leveraging the properties and specific interactions of various Laponite-polymer composites and drug moieties.
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Affiliation(s)
- Gita Kiaee
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, 02115, USA
| | - Nikolaos Dimitrakakis
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, 02115, USA
| | | | - Han-Jun Kim
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
| | - Reginald K Avery
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, 02115, USA
| | | | - Reihaneh Haghniaz
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
| | | | | | | | - Alberto Libanori
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
| | - Parastoo Khoshakhlagh
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, 02115, USA
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12
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Ono K, Sumiya M, Yoshinobu N, Dode T, Katayama T, Ueda N, Nagahama K. Angiogenesis Promotion by Combined Administration of DFO and Vein Endothelial Cells Using Injectable, Biodegradable, Nanocomposite Hydrogel Scaffolds. ACS APPLIED BIO MATERIALS 2022; 5:471-482. [PMID: 35045699 DOI: 10.1021/acsabm.1c00870] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Desferrioxamine (DFO) upregulates HIF-1α and stimulates expression of vascular endothelial growth factor (VEGF), thereby accelerating neovascularization. As DFO acts primarily upon surrounding vein endothelial cells to stimulate angiogenesis, the angiogenic efficacy of DFO could be reduced in severely injured tissues lacking a sufficient number of vein endothelial cells. We hypothesized that combined administration of DFO and vein endothelial cells is a promising tissue engineering approach for promoting neovascularization. In this study, we evaluated the applicability of this approach using injectable, biocompatible, biodegradable nanocomposite gels consisting of poly(dl-lactide-co-glycolide)-b-polyethylene glycol-b-poly(dl-lactide-co-glycolide) (PLGA-PEG-PLGA) copolymers and clay nanoparticle LAPONITE. The nanocomposites exhibited irreversible thermo-gelation in the presence of DFO, and the mechanical strength was strongly affected by the amount of DFO. The storage moduli of the gels increased with increasing amount of DFO. These results indicate that the interaction between DFO and LAPONITE works as physical cross-linking points and facilitates the formation of the gel network. The nanocomposite gels achieved sustained slow release of DFO due to interactions between DFO and LAPONITE. Human umbilical vein endothelial cells (HUVECs) cultured on DFO-loaded nanocomposite gels exhibited a higher degree of vascular tube formation than cells cultured on nanocomposite gels without DFO. Moreover, the number of branching points and the diameter of the blood vessels regenerated in the gels significantly increased with increasing DFO amount, indicating that DFO released from the gels facilitates vascular tube-forming capacity. As a proof of concept, we demonstrate that the combined administration of DFO and vein endothelial cells using nanocomposite gels promotes greater angiogenesis than DFO administration alone using the same gels by in vivo experiments, confirming the validity of our hypothesis. Considering the multiple advantages of nanocomposite gels with regard to potential vascularization capacity, certain biocompatibility, biodegradability, and injectable cell- and drug-delivery capacity, we concluded that the nanocomposite gels have potential utility as scaffolding biomaterials for vascularization in tissue engineering applications.
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Affiliation(s)
- Kimika Ono
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojima-minamimachi, Chuo-Ku, Kobe 650-0047, Japan
| | - Manami Sumiya
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojima-minamimachi, Chuo-Ku, Kobe 650-0047, Japan
| | - Naohiro Yoshinobu
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojima-minamimachi, Chuo-Ku, Kobe 650-0047, Japan
| | - Tatsuya Dode
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojima-minamimachi, Chuo-Ku, Kobe 650-0047, Japan
| | - Tokitaka Katayama
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojima-minamimachi, Chuo-Ku, Kobe 650-0047, Japan
| | - Natsumi Ueda
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojima-minamimachi, Chuo-Ku, Kobe 650-0047, Japan
| | - Koji Nagahama
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojima-minamimachi, Chuo-Ku, Kobe 650-0047, Japan
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13
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Structuring wheat dough using a thermomechanical process, from liquid food to 3D-printable food material. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2021.110696] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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14
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Gold KA, Saha B, Rajeeva Pandian NK, Walther BK, Palma JA, Jo J, Cooke JP, Jain A, Gaharwar AK. 3D Bioprinted Multicellular Vascular Models. Adv Healthc Mater 2021; 10:e2101141. [PMID: 34310082 PMCID: PMC9295047 DOI: 10.1002/adhm.202101141] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/13/2021] [Indexed: 02/06/2023]
Abstract
3D bioprinting is an emerging additive manufacturing technique to fabricate constructs for human disease modeling. However, current cell-laden bioinks lack sufficient biocompatibility, printability, and structural stability needed to translate this technology to preclinical and clinical trials. Here, a new class of nanoengineered hydrogel-based cell-laden bioinks is introduced, that can be printed into 3D, anatomically accurate, multicellular blood vessels to recapitulate both the physical and chemical microenvironments of native human vasculature. A remarkably unique characteristic of this bioink is that regardless of cell density, it demonstrates a high printability and ability to protect encapsulated cells against high shear forces in the bioprinting process. 3D bioprinted cells maintain a healthy phenotype and remain viable for nearly one-month post-fabrication. Leveraging these properties, the nanoengineered bioink is printed into 3D cylindrical blood vessels, consisting of living co-culture of endothelial cells and vascular smooth muscle cells, providing the opportunity to model vascular function and pathophysiology. Upon cytokine stimulation and blood perfusion, this 3D bioprinted vessel is able to recapitulate thromboinflammatory responses observed only in advanced in vitro preclinical models or in vivo. Therefore, this 3D bioprinted vessel provides a potential tool to understand vascular disease pathophysiology and assess therapeutics, toxins, or other chemicals.
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Affiliation(s)
- Karli A Gold
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Biswajit Saha
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | | | - Brandon K Walther
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA.,Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, 77030, USA
| | - Jorge A Palma
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Javier Jo
- Electrical and Computer Engineering, College of Engineering, The University of Oklahoma, Norman, OK, 73019, USA
| | - John P Cooke
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, 77030, USA
| | - Abhishek Jain
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA.,Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, 77030, USA.,Medical Physiology, College of Medicine, Texas A&M Health Science Center, Bryan, TX, 77807, USA
| | - Akhilesh K Gaharwar
- Biomedical Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA.,Interdisciplinary Program in Genetics, Texas A&M University, College Station, TX, 77843, USA.,Material Science and Engineering, College of Engineering, Texas A&M University, College Station, TX, 77843, USA.,Center for Remote Health Technologies and Systems, Texas A&M University, College Station, TX, 77843, USA
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15
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Misra C, Ranganathan VT, Bandyopadhyay R. Influence of medium structure on the physicochemical properties of aging colloidal dispersions investigated using the synthetic clay LAPONITE®. SOFT MATTER 2021; 17:9387-9398. [PMID: 34605527 DOI: 10.1039/d1sm00987g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Physical aging in colloidal dispersions manifests as a reduction in kinetic freedom of the colloids. In aqueous dispersions of charged clay colloids, the role of interparticle electrostatic interactions in determining the aging dynamics has been evaluated extensively. Despite water being the dispersion medium, the influence of water structure on the physicochemical properties of aging clay dispersions has, however, not been considered before. In this work, we use LAPONITE®, a model hectorite clay mineral that acquires surface charges when dispersed in water, to study the relative contributions of dispersion medium structure and interparticle electrostatic interactions on the physicochemical properties of aging hectorite clay dispersions. The structure of the dispersion medium is modified either by incorporating dissociating/non-dissociating kosmotropic (structure-inducing) or chaotropic (structure-disrupting) molecules or by changing dispersion temperature. Photon correlation spectroscopy, rheological measurements and particle-scale imaging are employed to evaluate the physicochemical properties of the dispersions. Our experiments involving incorporation of external additives demonstrate a strong influence of dispersion medium structure on the dispersion properties when the interparticle electrostatic interactions are weak. We introduce a new temperature dependent measurement protocol, wherein the temperature of the medium is fixed before adding the clay particles, to manipulate the hydrogen bonds in the aqueous medium in the absence of external additives. Accelerated aging, observed upon raising the temperature regardless of the experimental thermal histories, is attributed to increased interparticle electrostatic interactions as in the room temperature experiments with ionic additives. Our study identifies that in the presence of weak interparticle electrostatic interactions, changes in the physicochemical properties of charged clay dispersions can be driven by manipulating hydrogen bond populations in aqueous medium.
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Affiliation(s)
- Chandeshwar Misra
- Soft Condensed Matter Group, Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India.
| | - Venketesh T Ranganathan
- Soft Condensed Matter Group, Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India.
| | - Ranjini Bandyopadhyay
- Soft Condensed Matter Group, Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India.
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16
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Bostan LE, Clarkin CE, Mousa M, Worsley PR, Bader DL, Dawson JI, Evans ND. Synthetic Nanoclay Gels Do Not Cause Skin Irritation in Healthy Human Volunteers. ACS Biomater Sci Eng 2021; 7:2716-2722. [PMID: 33825442 DOI: 10.1021/acsbiomaterials.0c01615] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthetic clays are promising biomaterials for delivery of therapeutic molecules in regenerative medicine. However, before their use can be translated into clinical applications, their safety must be assessed in human volunteers. The aim of this study was to test the hypothesis that a synthetic nanoclay (LAPONITE) does not cause irritation to the human skin. To achieve this, a nanoclay gel at two different concentrations (1.5 and 3% w/v) was applied on the forearm of healthy volunteers for 24 h. 1% sodium lauryl sulfate (SLS) and 3% (w/v) polyacrylic acid were used as the positive and negative controls, respectively. The compromise in the skin barrier function was measured by trans-epidermal water loss (TEWL), erythema by spectroscopic measurements, and skin inflammatory biomarkers (IL-1α and IL-1RA) by the enzyme-linked immunosorbent assay. We found that the nanoclay caused no prolonged increase in TEWL, erythema, or induction of inflammatory cytokines. This was in contrast to 1% SLS, a known irritant, which induced significant increases in both skin erythema and TEWL. We conclude that the nanoclay is not an irritant and is thus suitable for therapeutic interventions at the skin surface.
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Affiliation(s)
- Luciana E Bostan
- Centre for Human Development, Stem Cells and Regeneration, Institute for Developmental Sciences, Southampton General Hospital, University of Southampton, Tremona Road, Southampton SO16 6YD, Hampshire, U.K
| | - Claire E Clarkin
- School of Biological Sciences, University of Southampton, Highfield Campus, University Road, Southampton SO17 1BJ, Hampshire, U.K
| | - Mohamed Mousa
- Centre for Human Development, Stem Cells and Regeneration, Institute for Developmental Sciences, Southampton General Hospital, University of Southampton, Tremona Road, Southampton SO16 6YD, Hampshire, U.K
| | - Peter R Worsley
- Faculty of Health Sciences, University of Southampton, Highfield Campus, University Road, Southampton SO17 1BJ, U.K
| | - Daniel L Bader
- Faculty of Health Sciences, University of Southampton, Highfield Campus, University Road, Southampton SO17 1BJ, U.K
| | - Jonathan I Dawson
- Centre for Human Development, Stem Cells and Regeneration, Institute for Developmental Sciences, Southampton General Hospital, University of Southampton, Tremona Road, Southampton SO16 6YD, Hampshire, U.K
| | - Nicholas D Evans
- Centre for Human Development, Stem Cells and Regeneration, Institute for Developmental Sciences, Southampton General Hospital, University of Southampton, Tremona Road, Southampton SO16 6YD, Hampshire, U.K
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17
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Jansson M, Belić D, Forsman J, Skepö M. Nanoplatelet interactions in the presence of multivalent ions: The effect of overcharging and stability. J Colloid Interface Sci 2020; 579:573-581. [PMID: 32623123 DOI: 10.1016/j.jcis.2020.06.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 11/28/2022]
Abstract
HYPOTHESIS The stability of colloidal dispersions in the presence of multivalent ions depends strongly on the electrostatic interactions between the suspended particles. Of particular interest are colloidal particles having dimensions in the nanometric range and with an anisotropic shape due to its high surface area per unit mass, for example clay, which has the key characteristic of a negatively charged surface, surrounded by an oppositely charged rim. EXPERIMENTS In this study, we investigate the interactions in nanoplatelet dispersions for the model system of Laponite® clay with addition of mono- and multivalent salt. Molecular dynamics simulations with enhanced umbrella sampling have been utilised in combination with the experimental techniques of zeta-potential measurements, dynamic light scattering, and transmission electron microscopy. FINDINGS It was observed that tactoid formation and tactoidal dissolution due to overcharging occur upon the addition of trivalent salt. The overcharging effect was captured from calculated potential of mean force and confirmed from the zeta-potential, which changed sign from negative to positive when increasing the stoichiometric charge-ratio between the positive salt ions and the clay. Consequently, the gained information could provide useful physical insight of nanoplatelet interactions in the presence of multivalent ions.
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Affiliation(s)
- Maria Jansson
- Theoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
| | - Domagoj Belić
- Physical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Jan Forsman
- Theoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Marie Skepö
- Theoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden; LINXS - Lund Institute of Advanced Neutron and X-ray Science, Scheelevägen 19, SE-223 70 Lund, Sweden.
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18
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Lapasin R, Grassi M, Abrami M, Šebenik U. Structural evolution of salt-free aqueous Laponite dispersions: A study based on low-field NMR relaxometry and rheological investigations. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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19
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Le Coeur C, Lorthioir C, Feoktystov A, Wu B, Volet G, Amiel C. Laponite/poly(2-methyl-2-oxazoline) hydrogels: Interplay between local structure and rheological behaviour. J Colloid Interface Sci 2020; 582:149-158. [PMID: 32814221 DOI: 10.1016/j.jcis.2020.07.068] [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: 05/18/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 11/08/2022]
Abstract
HYPOTHESIS Dispersions of Laponite in water may form gels, the rheological properties of which being possibly tuned by the addition of polymer chains. Laponite-based hydrogels with poly(ethylene oxide) (PEO) were the most widely investigated systems and the PEO chains were then found to reduce the elastic modulus. EXPERIMENTS Here, hydrogels based on Laponite and poly(2-methyl-2-oxazoline) (POXA) were considered. The adsorption behavior and the local structures within these nanocomposite gels were investigated by small-angle neutron scattering and NMR. The same materials were macroscopically characterized using rheology. FINDINGS An original evolution of the storage modulus G' with the POXA concentration is evidenced compared to Laponite/PEO hydrogels. At low POXA concentrations, a continuous reduction of G' is observed upon increasing the polymer content, as with PEO, due to the screening of electrostatic interactions between the clay platelets. However, above a critical value of the POXA concentration, G' increases with the polymer content. This difference with PEO-based hydrogels is correlated to the stronger affinity of POXA chains for the clay surfaces, which results in the reduction of the inhomogeneities for the Laponite disks within the gels. Steric repulsions would then counterbalance the effect of electrostatic repulsions and lead to the strengthening of the POXA-based hydrogels.
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Affiliation(s)
- C Le Coeur
- Université Paris Est Creteil, CNRS, Institut Chimie et Matériaux Paris Est, 2 Rue Henri Dunant, 94320 Thiais, France; Laboratoire Léon Brillouin, CEA-CNRS (UMR-12), CEA Saclay, Université Paris-Saclay, 91191 Gif-sur-Yvette Cedex, France.
| | - C Lorthioir
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, 4 Place Jussieu, 75005 Paris, France.
| | - A Feoktystov
- Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum MLZ, Lichtenbergstraße 1, 85748 Garching, Germany.
| | - B Wu
- Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum MLZ, Lichtenbergstraße 1, 85748 Garching, Germany.
| | - G Volet
- Université Paris Est Creteil, CNRS, Institut Chimie et Matériaux Paris Est, 2 Rue Henri Dunant, 94320 Thiais, France; Université d'Evry Val d'Essonne, Rue du Père Jarlan, 91025 Evry Cedex, France.
| | - C Amiel
- Université Paris Est Creteil, CNRS, Institut Chimie et Matériaux Paris Est, 2 Rue Henri Dunant, 94320 Thiais, France.
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20
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Rheology of aqueous dispersions of Laponite and TEMPO-oxidized nanofibrillated cellulose. Carbohydr Polym 2020; 240:116330. [DOI: 10.1016/j.carbpol.2020.116330] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/15/2020] [Accepted: 04/15/2020] [Indexed: 12/31/2022]
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21
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Chen X, Jiang R, Zhou Z, Wang X. Synthesis of SAPO‐34 Zeolite from Laponite and Its Application in the MTO Reaction. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000183] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xueshuai Chen
- School of Chemical Engineering and Technology China University of Mining and Technology 221116 Xuzhou Jiangsu China
| | - Rongli Jiang
- School of Chemical Engineering and Technology China University of Mining and Technology 221116 Xuzhou Jiangsu China
| | - Zihan Zhou
- School of Chemical Engineering and Technology China University of Mining and Technology 221116 Xuzhou Jiangsu China
| | - Xingwen Wang
- School of Chemical Engineering and Technology China University of Mining and Technology 221116 Xuzhou Jiangsu China
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22
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Suman K, Mittal M, Joshi YM. Effect of sodium pyrophosphate and understanding microstructure of aqueous LAPONITE ® dispersion using dissolution study. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:224002. [PMID: 32015220 DOI: 10.1088/1361-648x/ab724d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, we investigate the physical origin of ergodicity breaking in an aqueous colloidal dispersion of synthetic hectorite clay, LAPONITE®, by performing dissolution and rheological experiments with monovalent salt and tetrasodium pyrophosphate solution. We also study the effect of pH and nature of interface, nitrogen and paraffin oil on the same. Dissolution experiments carried out for dispersions with both the interfaces show similar results. However, for samples with a nitrogen interface, all the effects are observed to get expedited in time compared to a paraffin oil interface. When kept in contact with water, 1.5 wt.% and 2.8 wt.% colloidal dispersion at pH 10 swells at small ages, while it does not swell at large ages. The solution of tetrasodium pyrophosphate, interestingly, dissolves the entire colloidal dispersion sample with pH 10 irrespective of the concentration of clay. Experiments carried out on colloidal dispersions prepared in water having pH 13 demonstrate no effect of water as well as sodium pyrophosphate solution on the same suggesting a possibility of the presence of negative charge on edge at that pH. We believe that all the behaviors observed for samples at pH 10 can be explained by an attractive gel microstructure formed by edge-to-face contact. Furthermore, the absence of swelling in old colloidal dispersion at pH 10 and dissolution of the same by sodium pyrophosphate solution cannot be explained by merely repulsive interactions. This behavior suggests that attractive interactions originating from edge-to-face contact play an important role in causing ergodicity breaking in the colloidal dispersions at pH 10 at all the ages irrespective of the clay concentration. We further substantiate the presence of a fractal network structure formed by interparticle edge-face association using rheological tools and cryo-TEM imaging. We also conduct a comprehensive study of the effect of tetrasodium pyrophosphate on the sol-gel transition of LAPONITE® dispersion.
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Affiliation(s)
- Khushboo Suman
- Department of Chemical Engineering, Indian Institute of Technology, Kanpur 208016, India
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23
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Chen X, Jiang R, Hou H, Zhou Z, Wang X. Synthesis of ZSM-5/SAPO-34 zeolite composites from LAPONITE® and their catalytic properties in the MTO reaction. CrystEngComm 2020. [DOI: 10.1039/d0ce01002b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ZSM-5/SAPO-34 zeolite composites were successfully synthesized via a secondary growth method, and the SAPO-34 part of ZSM-5/SAPO-34 was synthesized from LAPONITE®.
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Affiliation(s)
- Xueshuai Chen
- School of Chemical Engineering and Technology
- University of Mining and Technology
- Xuzhou
- P. R. China
| | - Rongli Jiang
- School of Chemical Engineering and Technology
- University of Mining and Technology
- Xuzhou
- P. R. China
| | - Huilin Hou
- School of Chemical Engineering and Technology
- University of Mining and Technology
- Xuzhou
- P. R. China
| | - Zihan Zhou
- School of Chemical Engineering and Technology
- University of Mining and Technology
- Xuzhou
- P. R. China
| | - Xingwen Wang
- School of Chemical Engineering and Technology
- University of Mining and Technology
- Xuzhou
- P. R. China
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24
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Motta RJB, Almeida AZF, de Lima BLB, Schneider R, Balaban RDC, van Duijneveldt JS, de Oliveira RJ. Polyphosphates can stabilize but also aggregate colloids. Phys Chem Chem Phys 2019; 22:15-19. [PMID: 31815261 DOI: 10.1039/c9cp05225a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphates are well known as dispersants for a variety of colloidal particles. Here however we use rheological measurements to show that high molecular weight polyphosphates (PP) can instead act as a flocculant for LAPONITE® clay platelets. The proposed mechanism is bridging of PP between clay particle edges, leading to highly charged clusters forming a Wigner glass. Dynamic light scattering shows a bimodal cluster size distribution, independent of PP molecular weight, but the highest molecular weight gave the highest viscous and loss moduli for the PP-clay solid. These unique all-inorganic solids may have application in solid-state ionic conducting materials, controlled release fertilizers and biomedical applications.
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Affiliation(s)
- Rayssa Jossanea Brasileiro Motta
- Physical Chemistry of Materials Group, Departamento de Química, Universidade Estadual da Paraíba, Campina Grande, PB 58429-500, Brazil.
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Maeda T. Structures and Applications of Thermoresponsive Hydrogels and Nanocomposite-Hydrogels Based on Copolymers with Poly (Ethylene Glycol) and Poly (Lactide- Co-Glycolide) Blocks. Bioengineering (Basel) 2019; 6:E107. [PMID: 31766313 PMCID: PMC6955967 DOI: 10.3390/bioengineering6040107] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 01/04/2023] Open
Abstract
Thermoresponsive hydrogels showing biocompatibility and degradability have been under intense investigation for biomedical applications, especially hydrogels composed of hydrophilic poly(ethylene glycol) (PEG) and hydrophobic poly(lactic acid-co-glycolic acid) (PLGA) as first-line materials. Even though various aspects such as gelation behavior, degradation behavior, drug-release behavior, and composition effect have been studied for 20 years since the first report of these hydrogels, there are still many outputs on parameters affecting their gelation, structure, and application. In this review, the current trends of research on linear block copolymers composed of PEG and PLGA during the last 5 years (2014-2019) are summarized. In detail, this review stresses newly found parameters affecting thermoresponsive gelation, findings from structural analysis by simulation, small-angle neutron scattering (SANS), etc., progress in biomedical applications including drug delivery systems and regeneration medicine, and nanocomposites composed of block copolymers with PEG and PLGA and nanomaterials (laponite).
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Affiliation(s)
- Tomoki Maeda
- Frontier Research Center for Applied Atomic Sciences, Ibaraki University, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan;
- Department of Mechanical Engineering, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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26
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Shen H, Lv K, Huang X, Liu J, Bai Y, Wang J, Sun J. Hydrophobic‐associated polymer‐based laponite nanolayered silicate composite as filtrate reducer for water‐based drilling fluid at high temperature. J Appl Polym Sci 2019. [DOI: 10.1002/app.48608] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Haokun Shen
- Department of Petroleum EngineeringChina University of Petroleum (East China) Qingdao 266580 Shandong China
| | - Kaihe Lv
- Department of Petroleum EngineeringChina University of Petroleum (East China) Qingdao 266580 Shandong China
| | - Xianbin Huang
- Department of Petroleum EngineeringChina University of Petroleum (East China) Qingdao 266580 Shandong China
| | - Jingping Liu
- Department of Petroleum EngineeringChina University of Petroleum (East China) Qingdao 266580 Shandong China
| | - Yingrui Bai
- Department of Petroleum EngineeringChina University of Petroleum (East China) Qingdao 266580 Shandong China
| | - Jintang Wang
- Department of Petroleum EngineeringChina University of Petroleum (East China) Qingdao 266580 Shandong China
| | - Jinsheng Sun
- Department of Petroleum EngineeringChina University of Petroleum (East China) Qingdao 266580 Shandong China
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27
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Cidonio G, Alcala-Orozco CR, Lim KS, Glinka M, Mutreja I, Kim YH, Dawson JI, Woodfield TBF, Oreffo ROC. Osteogenic and angiogenic tissue formation in high fidelity nanocomposite Laponite-gelatin bioinks. Biofabrication 2019; 11:035027. [DOI: 10.1088/1758-5090/ab19fd] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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28
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Lv S, Duan T, Li H. Engineering Protein-Clay Nanosheets Composite Hydrogels with Designed Arginine-Rich Proteins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:7255-7260. [PMID: 31083892 DOI: 10.1021/acs.langmuir.9b00701] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Clay nanosheets (CNSs) have been widely used in the design of nanocomposite biomaterials. CNSs display a disk-like morphology with strong negatively charged surfaces. It has been shown that guanidinium-containing molecules can bind CNSs through noncovalent salt-bridge interactions and thus serve as "molecular glues" for CNSs. Making use of the guanidinium side chain in arginine, here, we designed novel arginine-rich elastomeric proteins to engineer protein-CNS nanocomposite hydrogels. Our results showed that these arginine-rich proteins can interact with CNSs effectively and can cross-link CNSs into hydrogels. Rheological measurements showed that mechanical properties of the resultant hydrogels depended on the arginine content in the arginine-rich proteins as well as CNS/protein concentration. Compared with hydrogels constructed from CNSs or proteins alone, the novel protein-CNS nanocomposite hydrogels show much improved mechanical properties. Our work opens up a new avenue to engineer functional protein hydrogels for various applications.
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Affiliation(s)
- Shanshan Lv
- Department of Chemistry , The University of British Columbia , Vancouver , BC V6T 1Z1 , Canada
- State Key Laboratory of Organic-Inorganic Composite Materials , Beijing University of Chemical Technology , Beijing , 100029 , P. R. China
| | - Tianyu Duan
- Department of Chemistry , The University of British Columbia , Vancouver , BC V6T 1Z1 , Canada
| | - Hongbin Li
- Department of Chemistry , The University of British Columbia , Vancouver , BC V6T 1Z1 , Canada
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29
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Gaharwar AK, Cross LM, Peak CW, Gold K, Carrow JK, Brokesh A, Singh KA. 2D Nanoclay for Biomedical Applications: Regenerative Medicine, Therapeutic Delivery, and Additive Manufacturing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1900332. [PMID: 30941811 PMCID: PMC6546555 DOI: 10.1002/adma.201900332] [Citation(s) in RCA: 169] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/23/2019] [Indexed: 05/03/2023]
Abstract
Clay nanomaterials are an emerging class of 2D biomaterials of interest due to their atomically thin layered structure, charged characteristics, and well-defined composition. Synthetic nanoclays are plate-like polyions composed of simple or complex salts of silicic acids with a heterogeneous charge distribution and patchy interactions. Due to their biocompatible characteristics, unique shape, high surface-to-volume ratio, and charge, nanoclays are investigated for various biomedical applications. Here, a critical overview of the physical, chemical, and physiological interactions of nanoclay with biological moieties, including cells, proteins, and polymers, is provided. The state-of-the-art biomedical applications of 2D nanoclay in regenerative medicine, therapeutic delivery, and additive manufacturing are reviewed. In addition, recent developments that are shaping this emerging field are discussed and promising new research directions for 2D nanoclay-based biomaterials are identified.
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Affiliation(s)
- Akhilesh K Gaharwar
- Biomedical Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA
- Material Science and Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA
- Center for Remote Health Technologies and Systems, Texas A&M University, College Station, TX, 77843, USA
| | - Lauren M Cross
- Biomedical Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Charles W Peak
- Biomedical Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Karli Gold
- Biomedical Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - James K Carrow
- Biomedical Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Anna Brokesh
- Biomedical Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Kanwar Abhay Singh
- Biomedical Engineering, Dwight Look College of Engineering, Texas A&M University, College Station, TX, 77843, USA
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30
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Katta K, Busko D, Landfester K, Baluschev S, Muñoz‐Espí R. Inorganic Protection of Polymer Nanocapsules: A Strategy to Improve the Efficiency of Encapsulated Optically Active Molecules. Isr J Chem 2018. [DOI: 10.1002/ijch.201800111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Kartheek Katta
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Dmitry Busko
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | | | - Stanislav Baluschev
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
- Optics and Spectroscopy Department, Faculty of PhysicsSofia University “St. Kliment Ochridski” 5 James Bourchier 1164 Sofia Bulgaria
| | - Rafael Muñoz‐Espí
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
- Institut de Ciència dels Materials (ICMUV)Universitat de València C/ Catedràtic José Beltrán 2 46980 Paterna Spain
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31
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Dening TJ, Joyce P, Webber JL, Beattie DA, Prestidge CA. Inorganic surface chemistry and nanostructure controls lipolytic product speciation and partitioning during the digestion of inorganic-lipid hybrid particles. J Colloid Interface Sci 2018; 532:666-679. [DOI: 10.1016/j.jcis.2018.08.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/05/2018] [Accepted: 08/06/2018] [Indexed: 01/27/2023]
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32
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Suman K, Joshi YM. Microstructure and Soft Glassy Dynamics of an Aqueous Laponite Dispersion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13079-13103. [PMID: 30180583 DOI: 10.1021/acs.langmuir.8b01830] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Synthetic hectorite clay Laponite RD/XLG is composed of disk-shaped nanoparticles that acquire dissimilar charges when suspended in an aqueous medium. Owing to their property to spontaneously self-assemble, Laponite is used as a rheology modifier in a variety of commercial water-based products. In particular, an aqueous dispersion of Laponite undergoes a liquid-to-solid transition at about 1 vol % concentration. The evolution of the physical properties as the dispersion transforms to the solid state is reminiscent of physical aging in molecular as well as colloidal glasses. The corresponding soft glassy dynamics of an aqueous Laponite dispersion, including the rheological behavior, has been extensively studied in the literature. In this feature article, we take an overview of recent advances in understanding soft glassy dynamics and various efforts taken to understand the peculiar rheological behavior. Furthermore, the continuously developing microstructure that is responsible for the eventual formation of a soft solid state that supports its own weight against gravity has also been a topic of intense debate and discussion. In particularly, extensive experimental and theoretical studies lead to two types of microstructures for this system: an attractive gel-like or a repulsive glass-like structure. We carefully examine and critically analyze the literature and propose a state (phase) diagram that suggests an aqueous Laponite dispersion to be present in an attractive gel state.
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Affiliation(s)
- Khushboo Suman
- Department of Chemical Engineering , Indian Institute of Technology Kanpur , India
| | - Yogesh M Joshi
- Department of Chemical Engineering , Indian Institute of Technology Kanpur , India
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33
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Huang X, Shen H, Sun J, Lv K, Liu J, Dong X, Luo S. Nanoscale Laponite as a Potential Shale Inhibitor in Water-Based Drilling Fluid for Stabilization of Wellbore Stability and Mechanism Study. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33252-33259. [PMID: 30185021 DOI: 10.1021/acsami.8b11419] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Shale hydration is the main reason causing wellbore instability in oil and gas drilling operations. In this study, nanoscale laponite as a shale inhibitor was employed to stabilize wellbores. The inhibition property of laponite suspensions was evaluated by an immersion experiment, linear swelling measurement, and a shale recovery test. Then the shale inhibition mechanism was studied by using capillary suction time (CST) measurement, a thixotropy study, plugging performance evaluation, and related theoretical analysis. Evaluation experiment results showed that laponite had a better inhibition property than widely used inhibitors of potassium chloride (KCl) and poly(ester amine) (PA). The mechanism study revealed that integration of several factors strengthened the inhibition property of laponite suspensions. Laponite nanoparticles could plug interlayer spaces of clays by electrostatic interaction to reduce water invasion; the "house of cards" structure of laponite suspensions enables large CST values and low free water contents; the excellent thixotropy of a laponite nanofluid could allow a nanofilm to form in order to reduce water invasion into the formation; the nanoscale laponite particles could substantially reduce the shale permeability and form less porous surfaces. Furthermore, laponite could considerably decrease the filtrate volume of the drilling fluid, while KCl and PA had negative influences on the properties of the drilling fluid. This approach described herein might provide an avenue to inhibit shale hydration.
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Affiliation(s)
- Xianbin Huang
- Department of Petroleum Engineering , China University of Petroleum (East China) , Qingdao , Shandong 266580 , China
| | - Haokun Shen
- Department of Petroleum Engineering , China University of Petroleum (East China) , Qingdao , Shandong 266580 , China
| | - Jinsheng Sun
- Department of Petroleum Engineering , China University of Petroleum (East China) , Qingdao , Shandong 266580 , China
| | - Kaihe Lv
- Department of Petroleum Engineering , China University of Petroleum (East China) , Qingdao , Shandong 266580 , China
| | - Jingping Liu
- Department of Petroleum Engineering , China University of Petroleum (East China) , Qingdao , Shandong 266580 , China
| | - Xiaodong Dong
- Department of Petroleum Engineering , China University of Petroleum (East China) , Qingdao , Shandong 266580 , China
| | - Shaojie Luo
- PetroChina Jilin Oilfield Company , Songyuan , Jilin 138000 , China
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34
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Nagahama K, Oyama N, Ono K, Hotta A, Kawauchi K, Nishikata T. Nanocomposite injectable gels capable of self-replenishing regenerative extracellular microenvironments for in vivo tissue engineering. Biomater Sci 2018; 6:550-561. [PMID: 29379910 DOI: 10.1039/c7bm01167a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Injectable hydrogels are biomaterials that have the potential to provide scaffolds to cells for in situ tissue regeneration with a minimally invasive implantation procedure. The success of in vivo tissue engineering utilizing injectable gels depends on providing cells with appropriate scaffolds that present an instructive extracellular microenvironment, which strongly influences the survival, proliferation, organization, and function of cells encapsulated within gels. One of the most important abilities of injectable gels to achieve this function is to adsorb and retain a wide variety of requisite bioactive molecules including nutrients, extracellular matrices, and growth/differentiation factors within gels. Previously, we developed nanocomposite injectable gels fabricated by simple combination of common biodegradable copolymers, poly(lactide-co-glycolide)-b-poly(ethylene glycol)-b-poly(lactide-co-glycolide) (PLGA-PEG-PLGA), and synthetic clay nanoparticles (LAPONITE®). We revealed that the nanocomposite injectable gels strongly adsorb ECM molecules including collagen and heparin within gels and retain them due to the ability of LAPONITE® in synchronization with the degradation of PLGA-PEG-PLGA and subsequent release of the degradation products. Human dermal fibroblast cells cultured on the nanocomposite gels showed enough high cell viability and proliferation for at least a week. Moreover, various kinds of human cells encapsulated within the nanocomposite gels exhibited significantly higher survival, proliferation, and three-dimensional organization in comparison with the PLGA-PEG-PLGA gel, LAPONITE® gel, and Matrigel. Furthermore, transplantation of mouse myoblast cells with the nanocomposite gels in model mice of skeletal muscle injury dramatically enhanced tissue regeneration and functional recovery, whereas cell transplantation with the PLGA-PEG-PLGA gel did not. Thus, the nanocomposite injectable gels possess unique abilities to self-replenish the regenerative extracellular microenvironment within the gels in the body, demonstrating the potential utility of the nanocomposite injectable gels for in vivo tissue engineering.
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Affiliation(s)
- Koji Nagahama
- Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojima-Minamimachi, Kobe 650-0047, Japan.
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35
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Xu P, Lan Y, Xing Z, Eiser E. Liquid crystalline behaviour of self-assembled LAPONITE®/PLL-PEG nanocomposites. SOFT MATTER 2018; 14:2782-2788. [PMID: 29457811 DOI: 10.1039/c7sm01613a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Synthetic LAPONITE®-clay particles with platelet-like shape display strong aging when dispersed in aqueous solutions, preventing the latter from reaching their natural liquid-crystalline equilibrium state. Here we introduce a facile method that successfully prevents this aging behaviour and enables accessing the systems' liquid-crystal and crystalline phases. We graft the comb-like polymer PLL-PEG (poly(l-lysine)-g-poly(ethylene glycol)) onto the clay surfaces from solution, thereby screening the negative surface charges and thus ensuring steric stabilisation. We show zeta-sizer and rheology measurements, respectively, confirming complete steric coating and that aging of dilute samples is completely suppressed even after a year. Using evaporation as a means to concentrate the particles, we observe various liquid crystalline textures under a polarized optical microscope (POM). Upon sequential spreading and drying, we are also able to obtain transparent films with hierarchical architecture.
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Affiliation(s)
- P Xu
- University of Cambridge, Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE, UK.
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36
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Uzumcu AT, Guney O, Okay O. Highly Stretchable DNA/Clay Hydrogels with Self-Healing Ability. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8296-8306. [PMID: 29441777 DOI: 10.1021/acsami.8b00168] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present mechanically strong and self-healable clay hydrogels containing 2-8 w/v % ds-DNA together with a synthetic biocompatible polymer, poly( N, N-dimethylacrylamide). Clay nanoparticles in the hydrogels act like a chemical cross-linker and promote their elastic behavior, whereas DNA contributes to their viscoelastic energy dissipation. The extent of mechanical hysteresis during cyclic tensile tests reveals that the strength of intermolecular bonds in DNA/clay hydrogels is in the range of the strength of hydrogen bonds. The hydrogels exhibit a high stretchability (up to 1500%) and a tensile strength between 20 and 150 kPa. They have the ability to self-heal, which is induced by heating the damaged gel samples above the melting temperature of ds-DNA. When comparing the mechanical properties of the hydrogels before and after healing, the healing efficiency is greater than 100%. We also demonstrate that ds-DNA molecules entrapped in the gel network undergoes thermal denaturation/renaturation cycles, leading to a further improvement in the mechanical properties of the hydrogels.
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Affiliation(s)
- Ahmet T Uzumcu
- Departments of Chemistry and Polymer Science & Technology , Istanbul Technical University , Maslak, 34469 Istanbul , Turkey
| | - Orhan Guney
- Departments of Chemistry and Polymer Science & Technology , Istanbul Technical University , Maslak, 34469 Istanbul , Turkey
| | - Oguz Okay
- Departments of Chemistry and Polymer Science & Technology , Istanbul Technical University , Maslak, 34469 Istanbul , Turkey
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37
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Jansson M, Thuresson A, Plivelic TS, Forsman J, Skepö M. The effect of the relative permittivity on the tactoid formation in nanoplatelet systems. A combined computer simulation, SAXS, and osmotic pressure study. J Colloid Interface Sci 2018; 513:575-584. [PMID: 29190569 DOI: 10.1016/j.jcis.2017.11.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/14/2017] [Accepted: 11/16/2017] [Indexed: 11/15/2022]
Abstract
The structural properties, and the intracrystalline swelling of Na+-, and Ca2+-montmorillonite (Na-, and Ca-mmt) have been investigated as an effect of decreasing the relative permittivity of the solvent, i.e. from water to ethanol (EtOH), utilizing the experimental techniques; small angle X-ray scattering (SAXS) and osmotic pressure measurements. The experimental data were compared with the continuum model, utilizing coarse-grained molecular dynamics bulk simulations, Monte Carlo simulations of two infinite parallel surfaces corresponding to two clay platelets, and the strong coupling theory. It was found that it is possible to tune the electrostatic interactions to obtain a transition from a repulsive to an attractive system for the Na-mmt by increasing the EtOH concentration, i.e. the Bjerrum length increases, and hence, the attractive ion-ion correlation forces are enhanced. A qualitative agreement was observed between the simulations and the experimental results. Moreover, a non-monotonic behavior of the intracrystalline swelling of Ca-mmt as a function of EtOH concentration was captured experimentally, where an increase in the osmotic pressure, and hence, an increase in the d-spacing was found at low concentrations, indicating that repulsive short-ranged interactions dominate in the system. Theoretically, the non-monotonic behavior could not be captured with the continuum model, probably due to the limitation that the electrostatic interactions solely enters the Hamiltonian via the Bjerrum length.
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Affiliation(s)
- Maria Jansson
- Theoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
| | - Axel Thuresson
- Theoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Tomás S Plivelic
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Jan Forsman
- Theoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Marie Skepö
- Theoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
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38
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Hybrid cross-linked poly(2-acrylamido-2-methyl-1-propanesulfonic acid) hydrogels with tunable viscoelastic, mechanical and self-healing properties. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2017.12.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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39
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Pandey PK, Rawat K, Aswal V, Kohlbrecher J, Bohidar H. Imidazolium based ionic liquid induced DNA gelation at remarkably low concentration. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.083] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Rheology of Laponite-scleroglucan hydrogels. Carbohydr Polym 2017; 168:290-300. [DOI: 10.1016/j.carbpol.2017.03.068] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/15/2017] [Accepted: 03/21/2017] [Indexed: 11/24/2022]
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41
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Thrithamara Ranganathan V, Bandyopadhyay R. Effects of aging on the yielding behaviour of acid and salt induced Laponite gels. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Marques FADM, Angelini R, Ruocco G, Ruzicka B. Isotopic Effect on the Gel and Glass Formation of a Charged Colloidal Clay: Laponite. J Phys Chem B 2017; 121:4576-4582. [PMID: 28376301 DOI: 10.1021/acs.jpcb.6b12596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The time evolution of both dynamic and static structure factors of a charged colloidal clay, Laponite, dispersed in both H2O and D2O solvents has been investigated through multiangle dynamic light scattering (DLS) and small-angle X-ray scattering (SAXS) as a function of weight concentration. The aging phenomenology and the formation of arrested states, both gel and glass, are preserved in D2O, while the dynamics is slowed down with respect to water. These findings are important to understand the role played by the solvent in the interparticle interactions and for techniques such as neutron scattering and nuclear magnetic resonance that allow for the extension of the accessible scattering vectors and time scales.
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Affiliation(s)
| | - Roberta Angelini
- ISC-CNR, Sede Sapienza , I-00185 Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma , I-00185 Roma, Italy
| | - Giancarlo Ruocco
- Dipartimento di Fisica, Sapienza Università di Roma , I-00185 Roma, Italy.,Center for Life Nano Science, IIT@Sapienza, Istituto Italiano di Tecnologia , Viale Regina Elena 291, 00161 Roma, Italy
| | - Barbara Ruzicka
- ISC-CNR, Sede Sapienza , I-00185 Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma , I-00185 Roma, Italy
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43
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Jatav S, Joshi YM. Phase Behavior of Aqueous Suspension of Laponite: New Insights with Microscopic Evidence. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2370-2377. [PMID: 28209059 DOI: 10.1021/acs.langmuir.7b00151] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Investigating microstructure of suspensions with particles having anisotropic shape that share complex interactions is a challenging task leading to competing claims. This work investigates phase behavior of one such system: aqueous Laponite suspension, which is highly contested in the literature, using rheological and microscopic tools. Remarkably, we observe that over a broad range of Laponite (1.4 to 4 wt %) and salt concentrations (0 to 7 mM), the system overwhelmingly demonstrates all the rheological characteristics of the sol-gel transition leading to a percolated network. Analysis of the rheological response leads to fractal dimension that primarily depends on the Laponite concentration. We also obtain the activation energy for gelation, which is observed to decrease with increase in Laponite as well as salt concentration. Significantly, the cryo-TEM images of the postgel state clearly show the presence of a percolated network formed by interparticle bonds. The present work therefore conclusively establishes the system to be in an attractive gel state resolving a long-standing debate in the literature.
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Affiliation(s)
- Shweta Jatav
- Department of Chemical Engineering, Indian Institute of Technology , Kanpur 208016, India
| | - Yogesh M Joshi
- Department of Chemical Engineering, Indian Institute of Technology , Kanpur 208016, India
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44
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Microstructure of colloid-polymer mixtures containing charged colloidal disks and weakly-adsorbing polymers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.07.091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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45
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Dávila JL, d'Ávila MA. Laponite as a rheology modifier of alginate solutions: Physical gelation and aging evolution. Carbohydr Polym 2016; 157:1-8. [PMID: 27987800 DOI: 10.1016/j.carbpol.2016.09.057] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 09/14/2016] [Accepted: 09/16/2016] [Indexed: 01/13/2023]
Abstract
The rheological behavior of alginate and Laponite/alginate solutions was studied. It was observed that the Cross viscosity model successfully describes the steady-state shear behavior of this polysaccharide. The scaling behavior analyzed for the entangled regime is in good agreement with polyelectrolyte solutions (Ge∼cp3/2), with interactions generated between the alginate and the charged surfaces of the Laponite platelets. Therefore, the effect of Laponite as a rheology modifier is influenced by the alginate concentration. Higher alginate concentrations hindered the formation of the house of cards microstructure. Frequency sweep tests were performed to analyze the transition from solid-like to liquid-like behavior in a solid-like dominated domain. Soft physical gels were obtained at low alginate concentrations. The gel point was determined (1.65wt.% of alginate and 2wt.% of Laponite) through the Kramers-Krönig damping factor, and time sweep tests revealed the evolution of the storage (G') and loss modulus (G″) as functions of the waiting time (tw). The growing elasticity revealed that Laponite/alginate solutions undergo aging.
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Affiliation(s)
- José Luis Dávila
- Department of Manufacturing and Materials Engineering, Faculty of Mechanical Engineering, University of Campinas, Campinas CEP 13083-860, Brazil.
| | - Marcos Akira d'Ávila
- Department of Manufacturing and Materials Engineering, Faculty of Mechanical Engineering, University of Campinas, Campinas CEP 13083-860, Brazil.
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46
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Joshi N, Rawat K, Aswal V, Bohidar H. Smoluchowski aggregation kinetics, gelation, ergodicity breaking and aging dynamics of (1:1) Laponite-Montmorillonite mixed clay dispersions. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.04.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Flocculated Laponite–PEG/PEO dispersions with monovalent salt, a SAXS and simulation study. J Colloid Interface Sci 2016; 466:330-42. [DOI: 10.1016/j.jcis.2015.12.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 12/15/2015] [Accepted: 12/17/2015] [Indexed: 11/19/2022]
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48
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Rheological inversion of the universal aging dynamics of hectorite clay suspensions. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.11.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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49
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Mustafa R, Zhou B, Yang J, Zheng L, Zhang G, Shi X. Dendrimer-functionalized LAPONITE® nanodisks loaded with gadolinium for T1-weighted MR imaging applications. RSC Adv 2016. [DOI: 10.1039/c6ra18718h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Dendrimer-functionalized LAPONITE® nanodisks loaded with gadolinium can be used as an efficient contrast agent for different MR imaging applications.
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Affiliation(s)
- Rania Mustafa
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Benqing Zhou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Jia Yang
- Department of Radiology
- Shanghai General Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200080
| | - Linfeng Zheng
- Department of Radiology
- Shanghai General Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200080
| | - Guixiang Zhang
- Department of Radiology
- Shanghai General Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200080
| | - Xiangyang Shi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
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50
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Jatav S, Joshi YM. Analyzing a fractal gel of charged oblate nanoparticles in a suspension using time-resolved rheometry and DLVO theory. Faraday Discuss 2016; 186:199-213. [DOI: 10.1039/c5fd00128e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The disk-like nanoparticles of LAPONITE® are known to self-assemble to form a fractal gel within hours after a sufficiently large concentration of LAPONITE® is dispersed in water containing salt. The concentration of sodium counterions associated with LAPONITE® particles, however, continues to increase over a period of days, suggesting that delamination of LAPONITE® disks from stacks is sluggish and/or dissociation of counterions is slow. In either case, spontaneous self-assembly of LAPONITE® particles occurs even though delamination and/or counterion dissociation has not reached its equilibrium state. In order to determine the nature of the fractal gel as the extent of delamination and/or dissociation progresses towards equilibrium, we subject the LAPONITE® suspension to a freezing–defrosting cycle, which interestingly reinitiates the gelation process in suspension afresh. Application of time-resolved rheometry to a defrosted suspension shows that iso-frequency loss tangent curves intersect at an identical point, validating the Winter–Chambon criterion for a critical fractal gel state. Interestingly, while the time required to form a critical gel is observed to decrease with increased time elapsed since preparation, at which freezing–defrosting is carried out, the fractal dimension of the critical gel is observed to remain unaffected. We also solve DLVO theory for free energy interactions between the negatively charged LAPONITE® particle faces and analyze the observed phenomena.
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Affiliation(s)
- Shweta Jatav
- Department of Chemical Engineering
- Indian Institute of Technology, Kanpur
- Kanpur-208016
- India
| | - Yogesh M. Joshi
- Department of Chemical Engineering
- Indian Institute of Technology, Kanpur
- Kanpur-208016
- India
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