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Hernandez V, Jordan RS, Hill IM, Xu B, Zhai C, Wu D, Lee H, Misiaszek J, Shirzad K, Martinez MF, Kusoglu A, Yeo J, Wang Y. Deformation Rate-Adaptive Conducting Polymers and Composites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207100. [PMID: 37098606 DOI: 10.1002/smll.202207100] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/25/2023] [Indexed: 06/19/2023]
Abstract
Materials are more easily damaged during accidents that involve rapid deformation. Here, a design strategy is described for electronic materials comprised of conducting polymers that defies this orthodox property, making their extensibility and toughness dynamically adaptive to deformation rates. This counterintuitive property is achieved through a morphology of interconnected nanoscopic core-shell micelles, where the chemical interactions are stronger within the shells than the cores. As a result, the interlinked shells retain material integrity under strain, while the rate of dissociation of the cores controls the extent of micelle elongation, which is a process that adapts to deformation rates. A prototype based on polyaniline shows a 7.5-fold increase in ultimate elongation and a 163-fold increase in toughness when deformed at increasing rates from 2.5 to 10 000% min-1 . This concept can be generalized to other conducting polymers and highly conductive composites to create "self-protective" soft electronic materials with enhanced durability under dynamic movement or deformation.
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Affiliation(s)
- Victor Hernandez
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
| | - Robert S Jordan
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
| | - Ian M Hill
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
| | - Bohao Xu
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
| | - Chenxi Zhai
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Di Wu
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
| | - Hansong Lee
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
| | - John Misiaszek
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
| | - Kiana Shirzad
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
| | - Miguel F Martinez
- Department of Chemistry and Biochemistry, University of California, Merced, Merced, CA, 95343, USA
| | - Ahmet Kusoglu
- Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA
| | - Jingjie Yeo
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Yue Wang
- Department of Materials Science and Engineering, University of California, Merced, Merced, CA, 95343, USA
- Department of Chemistry and Biochemistry, University of California, Merced, Merced, CA, 95343, USA
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2
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Ang CL, Tha Goh KK, Lim K, Matia-Merino L. Rheological characterization of a physically-modified waxy potato starch: Investigation of its shear-thickening mechanism. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Jing B, Ferreira M, Lin K, Li R, Yavitt BM, Qiu J, Fukuto M, Zhu Y. Ultrastructure of Critical-Gel-like Polyzwitterion–Polyoxometalate Complex Coacervates: Effects of Temperature, Salt Concentration, and Shear. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benxin Jing
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Manuela Ferreira
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Kehua Lin
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Ruipeng Li
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Benjamin M. Yavitt
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jie Qiu
- School of Nuclear Science and Technology and State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Masafumi Fukuto
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Yingxi Zhu
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
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4
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Affiliation(s)
- James W. Swan
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - Samuel W. Winslow
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - William A. Tisdale
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge Massachusetts USA
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5
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Molecular Weight Dependence of Associative Behavior in Polyimide/DMF Solutions. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-020-2358-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Blunt W, Gaugler M, Collet C, Sparling R, Gapes DJ, Levin DB, Cicek N. Rheological Behavior of High Cell Density Pseudomonas putida LS46 Cultures during Production of Medium Chain Length Polyhydroxyalkanoate (PHA) Polymers. Bioengineering (Basel) 2019; 6:E93. [PMID: 31600906 PMCID: PMC6956342 DOI: 10.3390/bioengineering6040093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/01/2019] [Accepted: 10/08/2019] [Indexed: 12/20/2022] Open
Abstract
The rheology of high-cell density (HCD) cultures is an important parameter for its impact on mixing and sparging, process scale-up, and downstream unit operations in bioprocess development. In this work, time-dependent rheological properties of HCD Pseudomonas putida LS46 cultures were monitored for microbial polyhydroxyalkanoate (PHA) production. As the cell density of the fed-batch cultivation increased (0 to 25 g·L-1 cell dry mass, CDM), the apparent viscosity increased nearly nine-fold throughout the fed-batch process. The medium behaved as a nearly Newtonian fluid at lower cell densities, and became increasingly shear-thinning as the cell density increased. However, shear-thickening behavior was observed at shearing rates of approximately 75 rad·s-1 or higher, and its onset increased with viscosity of the sample. The supernatant, which contained up to 9 g·L-1 soluble organic material, contributed more to the observed viscosity effect than did the presence of cells. Owing to this behavior, the oxygen transfer performance of the bioreactor, for otherwise constant operating conditions, was reduced by 50% over the cultivation time. This study has shown that the dynamic rheology of HCD cultures is an important engineering parameter that may impact the final outcome in PHA cultivations. Understanding and anticipating this behavior and its biochemical origins could be important for improving overall productivity, yield, process scalability, and the efficacy of downstream processing unit operations.
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Affiliation(s)
- Warren Blunt
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada.
| | - Marc Gaugler
- Scion Research, Te Papa Tipu Innovation Park, 49 Sala Street, Private Bag 3020, Rotorua 3046, New Zealand.
| | - Christophe Collet
- Scion Research, Te Papa Tipu Innovation Park, 49 Sala Street, Private Bag 3020, Rotorua 3046, New Zealand.
| | - Richard Sparling
- Department of Microbiology, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
| | - Daniel J Gapes
- Scion Research, Te Papa Tipu Innovation Park, 49 Sala Street, Private Bag 3020, Rotorua 3046, New Zealand.
| | - David B Levin
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada.
| | - Nazim Cicek
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada.
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7
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Investigation of the Shear Thickening Fluid Encapsulation in an Orifice Coagulation Bath. Polymers (Basel) 2019; 11:polym11030519. [PMID: 30960503 PMCID: PMC6473241 DOI: 10.3390/polym11030519] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/11/2019] [Accepted: 03/15/2019] [Indexed: 11/17/2022] Open
Abstract
The orifice coagulation bath method is proposed to encapsulate shear thickening fluid (STF) to form STF capsules, in an attempt to improve the combination of STF and the matrix as well as strengthen the flexibility and stability of the STF composites. By varying the calcium chloride concentration (10, 20 mg/mL), sodium alginate concentration (5, 7, 10 mg/mL) and the surfactant dosage (10%, 20%, 30%), optimal preparation conditions were studied, considering the capsule strength and encapsulation rate. The capsules were also characterized using a scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR) and a thermogravimetric analyzer (TGA). The results show that the optimal solution for the preparation of the capsules is composed of 30% surfactant, 10 mg/mL mass concentration of CaCl2, and 10 mg/mL mass concentration of sodium alginate. The rough surface and porous interior was observed by SEM. The average diameter of the capsules was 1.93 mm. The TGA curves indicate an improvement on the capsule thermal stability. This study thus provides a promising STF capsule preparation method.
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8
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Kuczera S, Gentile L, Brox TI, Olsson U, Schmidt C, Galvosas P. Multilamellar Vesicle Formation Probed by Rheo-NMR and Rheo-SALS under Large Amplitude Oscillatory Shear. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:8314-8325. [PMID: 29924625 DOI: 10.1021/acs.langmuir.8b01510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The formation of multilamellar vesicles (MLVs) in the lyotropic lamellar phase of the system triethylene glycol mono n-decyl ether (C10E3)/water is investigated under large amplitude oscillatory shear (LAOS) using spatially resolved rheo-NMR spectroscopy and a combination of rheo-small angle light scattering (rheo-SALS) and conventional rheology. Recent advances in rheo-NMR hardware development facilitated the application of LAOS deformations in high-field NMR magnets. For the range of investigated strain amplitudes (10-50) and frequencies (1 and 2 rad s-1), MLV formation is observed in all NMR and most SALS experiments. It is found that the MLV size depends on the applied frequency in contrast to previous steady shear experiments where the shear rate is the controlling parameter. The onset of MLV formation, however, is found to vary with the shear amplitude. The LAOS measurements bear no indication of the intermediate structures resembling aligned multilamellar cylinders observed in steady shear experiments. Lissajous curves of stress vs strain reveal a transition from a viscoelastic solid material to a pseudoplastic material.
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Affiliation(s)
- Stefan Kuczera
- Victoria University of Wellington , SCPS, MacDiarmid Institute for Advanced Materials and Nanotechnology , Wellington 6140 , New Zealand
- Division of Physical Chemistry , Lund University , P.O. Box 124, 221 00 Lund , Sweden
| | - Luigi Gentile
- Division of Physical Chemistry , Lund University , P.O. Box 124, 221 00 Lund , Sweden
- Department of Biology, MEMEG unit , Lund University , Sölvegatan 35 , 223 62 Lund , Sweden
| | - Timothy I Brox
- Victoria University of Wellington , SCPS, MacDiarmid Institute for Advanced Materials and Nanotechnology , Wellington 6140 , New Zealand
| | - Ulf Olsson
- Division of Physical Chemistry , Lund University , P.O. Box 124, 221 00 Lund , Sweden
| | - Claudia Schmidt
- Department of Chemistry , Paderborn University , Warburger Strasse 100 , D-33098 Paderborn , Germany
| | - Petrik Galvosas
- Victoria University of Wellington , SCPS, MacDiarmid Institute for Advanced Materials and Nanotechnology , Wellington 6140 , New Zealand
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9
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A hybrid molecular dynamics study on the non-Newtonian rheological behaviors of shear thickening fluid. J Colloid Interface Sci 2017; 497:378-384. [PMID: 28314143 DOI: 10.1016/j.jcis.2017.03.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 03/06/2017] [Accepted: 03/06/2017] [Indexed: 11/22/2022]
Abstract
To investigate the microstructural evolution dependency on the apparent viscosity in shear-thickening fluids (STFs), a hybrid mesoscale model combined with stochastic rotation dynamics (SRD) and molecular dynamics (MD) is used. Muller-Plathe reverse perturbation method is adopted to analyze the viscosities of STFs in a two-dimensional model. The characteristic of microstructural evolution of the colloidal suspensions under different shear rate is studied. The effect of diameter of colloidal particles and the phase volume fraction on the shear thickening behavior is investigated. Under low shear rate, the two-atom structure is formed, because of the strong particle attractions in adjacent layers. At higher shear rate, the synergetic pair structure extends to layered structure along flow direction because of the increasing hydrodynamics action. As the shear rate rises continuously, the layered structure rotates and collides with other particles, then turned to be individual particles under extension or curve string structure under compression. Finally, at the highest shear rate, the strings curve more severely and get into two-dimensional cluster. The apparent viscosity of the system changes from shear-thinning behavior to the shear-thickening behavior. This work presents valuable information for further understanding the shear thickening mechanism.
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10
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Kumar S, Mandal A. Rheological properties and performance evaluation of synthesized anionic polymeric surfactant for its application in enhanced oil recovery. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.051] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Li S, Wang J, Cai W, Zhao S, Wang Z, Wang S. Effect of acid and temperature on the discontinuous shear thickening phenomenon of silica nanoparticle suspensions. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.06.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Jaishankar A, Wee M, Matia-Merino L, Goh KK, McKinley GH. Probing hydrogen bond interactions in a shear thickening polysaccharide using nonlinear shear and extensional rheology. Carbohydr Polym 2015; 123:136-45. [DOI: 10.1016/j.carbpol.2015.01.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 12/24/2014] [Accepted: 01/05/2015] [Indexed: 10/24/2022]
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13
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Li C, Luo X, Li T, Tong X, Li Y. Polyurethane foams based on crude glycerol-derived biopolyols: One-pot preparation of biopolyols with branched fatty acid ester chains and its effects on foam formation and properties. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.10.043] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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de Molina PM, Herfurth C, Laschewsky A, Gradzielski M. Structure and dynamics of networks in mixtures of hydrophobically modified telechelic multiarm polymers and oil in water microemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:15994-16006. [PMID: 23075139 DOI: 10.1021/la303673a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The structural and dynamical properties of oil-in-water (O/W) microemulsions (MEs) modified with telechelic polymers of different functionality (e.g., number of hydrophobically modified arms, f) were studied by means of dynamic light scattering (DLS), small-angle neutron scattering (SANS), and high frequency rheology measurements as a function of the polymer architecture and the amount of added polymer. For this purpose, we employed tailor-made hydrophobically end-capped poly(N,N-dimethylacrylamide) star polymers of a variable number of endcaps, f, of different alkyl chain lengths, synthesized by the reversible addition-fragmentation chain transfer method. The addition of the different end-capped polymers to an uncharged ME of O/W droplets leads to a large enhancement of the viscosity of the systems. SANS experiments show that the O/W ME droplets are not changed upon the addition of the polymer, and its presence only changes the interdroplet interactions. The viscosity increases largely upon addition of a polymer, and this enhancement depends pronouncedly on the alkyl length of the hydrophobic sticker as it controls the residence time in a ME droplet. Similarly, the high frequency modulus G(0) depends on the amount of added polymer but not on the sticker length. G(0) was found to be directly proportional to f - 1. The onset of network formation is shifted to a lower number of stickers per ME droplet with increasing f, and the network formation becomes more effective. Thus, the dynamics of network formation are controlled by the polymer architecture. The effect on the dynamics seen by DLS is even more pronounced. Upon increasing the polymer concentration, slower relaxation modes appear that become especially pronounced with increasing number of arms. The relaxation dynamics are correlated to the rheological relaxation, and both are controlled by the polymer architecture.
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Affiliation(s)
- Paula Malo de Molina
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Berlin, Germany.
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15
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Suzuki S, Uneyama T, Inoue T, Watanabe H. Nonlinear Rheology of Telechelic Associative Polymer Networks: Shear Thickening and Thinning Behavior of Hydrophobically Modified Ethoxylated Urethane (HEUR) in Aqueous Solution. Macromolecules 2012. [DOI: 10.1021/ma202050x] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shinya Suzuki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Lintec Corporation, 5-14-42 Nishikicho, Warabi, Saitama 335-0005, Japan
| | - Takashi Uneyama
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Tadashi Inoue
- Department of Macromolecular Science,
Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Hiroshi Watanabe
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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16
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Oikonomou E, Bokias G, Kallitsis JK, Iliopoulos I. Formation of hybrid wormlike micelles upon mixing cetyl trimethylammonium bromide with poly(methyl methacrylate-co-sodium styrene sulfonate) copolymers in aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5054-5061. [PMID: 21446711 DOI: 10.1021/la200017j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The association of cetyltrimethylammonium bromide, CTAB, with a series of P(MMAx-co-SSNa) random copolymers of sodium styrene sulfonate (SSNa) with methyl methacrylate (MMA) was explored in aqueous solution as a function of the MMA molar content, x, of the copolymers. The polyelectrolyte/surfactant complexation in aqueous solution was verified through pyrene fluorescence probing. In addition, turbidimetry studies in dilute or more concentrated aqueous solutions elucidated the phase separation behavior of the P(MMAx-co-SSNa)/CTAB systems as a function of the copolymer composition x and the surfactant to polyelectrolyte mixing charge ratio. It is found that practically phase separation is completely suppressed within the studied mixing range when the MMA content of the copolymers is ∼30-40 mol%. For lower MMA contents the polyelectrolyte/surfactant complex separates out from water, while for higher x values the solubility limits of the copolymers in water are attained. For the intermediate MMA contents, viscoelastic systems are obtained in more concentrated polymer/surfactant solutions provided that the polyelectrolyte is fully complexed with the cationic surfactant ((1)H NMR results). Moreover, the (1)H NMR studies indicate that hybrid P(MMAx-co-SSNa)/CTAB wormlike micelles are formed in water under these conditions. Finally, it is shown that addition of salt prevents syneresis problems and facilitates the rheological investigation.
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Affiliation(s)
- E Oikonomou
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
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17
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Lele A, Shedge A, Badiger M, Wadgaonkar P, Chassenieux C. Abrupt Shear Thickening of Aqueous Solutions of Hydrophobically Modified Poly(N,N′-dimethylacrylamide-co-acrylic acid). Macromolecules 2010. [DOI: 10.1021/ma1017378] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ashish Lele
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune 411 008, India
| | - Aarti Shedge
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune 411 008, India
| | - Manohar Badiger
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune 411 008, India
| | - Prakash Wadgaonkar
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune 411 008, India
| | - Christophe Chassenieux
- Polymer, Colliods and Interfaces UMR CNRS 6120, Universite du Maine, Avenue Olivier Messiaen 72085, Le Mans, cedex 09, France
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18
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Kundu J, Dewan M, Ghoshal S, Kundu SC. Mulberry non-engineered silk gland protein vis-à-vis silk cocoon protein engineered by silkworms as biomaterial matrices. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:2679-2689. [PMID: 18283532 DOI: 10.1007/s10856-008-3398-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Accepted: 01/31/2008] [Indexed: 05/25/2023]
Abstract
Silk fibroin from silk gland of Bombyx mori 5th instar larvae was utilized to fabricate films, which may find possible applications as two-dimensional matrices for tissue engineering. Bombyx mori cocoon fibroin is well characterized as potential biomaterial by virtue of its good mechanical strength, water stability, thermal properties, surface roughness and biocompatibility. The present study aims to characterize the biophysical, thermal, mechanical, rheological, swelling properties along with spectroscopic analysis, surface morphology and biocompatibility of the silk gland fibroin films compared with cocoon fibroin. Fibroin solutions showed increased turbidity and shear thinning at higher concentration. The films after methanol treatment swelled moderately and were less hydrophilic compared to the untreated. The spectroscopic analysis of the films illustrated the presence of various amide peaks and conformational transition from random coil to beta sheet on methanol treatment. X-ray diffraction studies also confirmed the secondary structure. Thermogravimetric analysis showed distinct weight loss of the films. The films were mechanically stronger and AFM studies showed surfaces were rougher on methanol treatment. The matrices were biocompatible and supported L929 mouse fibroblast cell growth and proliferation. The results substantiate the silk gland fibroin films as potential biomaterial matrices.
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Affiliation(s)
- Joydip Kundu
- Department of Biotechnology, Indian Institute of Technology, Kharagpur, India.
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19
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Goh KKT, Matia-Merino L, Hall CE, Moughan PJ, Singh H. Complex Rheological Properties of a Water-Soluble Extract from the Fronds of the Black Tree Fern, Cyathea medullaris. Biomacromolecules 2007; 8:3414-21. [DOI: 10.1021/bm7005328] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kelvin K. T. Goh
- Institute of Food, Nutrition and Human Health, and Riddet Centre, Massey University, Private Bag 11 222, Palmerston North, New Zealand
| | - Lara Matia-Merino
- Institute of Food, Nutrition and Human Health, and Riddet Centre, Massey University, Private Bag 11 222, Palmerston North, New Zealand
| | - Christopher E. Hall
- Institute of Food, Nutrition and Human Health, and Riddet Centre, Massey University, Private Bag 11 222, Palmerston North, New Zealand
| | - Paul J. Moughan
- Institute of Food, Nutrition and Human Health, and Riddet Centre, Massey University, Private Bag 11 222, Palmerston North, New Zealand
| | - Harjinder Singh
- Institute of Food, Nutrition and Human Health, and Riddet Centre, Massey University, Private Bag 11 222, Palmerston North, New Zealand
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20
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Franks GV, Lange FF. Plastic flow of saturated alumina powder compacts: Pair potential and strain rate. AIChE J 2006. [DOI: 10.1002/aic.690450817] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Lecourt T, Sinaÿ P, Chassenieux C, Rinaudo M, Auzély-Velty R. Complexation between a Hydrophobically Modified Chitosan and Cyclodextrin Homodimers Singly or Doubly Connected through Their Primary Sides: Effects of Their Molecular Architecture on the Polymer Properties in Solution. Macromolecules 2004. [DOI: 10.1021/ma049822x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas Lecourt
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
| | - Pierre Sinaÿ
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
| | - Christophe Chassenieux
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
| | - Marguerite Rinaudo
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
| | - Rachel Auzély-Velty
- Ecole Normale Supérieure, Département de Chimie, UMR CNRS 8642 24, rue Lhomond, 75231 Paris, Cedex 05, France; Physicochimie des Polymères et des Milieux Dispersés, UMR CNRS 7615, ESPCI 10, rue Vauquelin 75231 Paris, Cedex 05, France; and Centre de Recherches sur les Macromolécules Végétales (CNRS), Université Joseph Fourier de Grenoble, BP 53, 38041 Grenoble Cedex, France
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Kujawa P, Audibert-Hayet A, Selb J, Candau F. Rheological properties of multisticker associative polyelectrolytes in semidilute aqueous solutions. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/polb.20030] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Liu RCW, Morishima Y, Winnik FM. Composition-Dependent Rheology of Aqueous Systems of Amphiphilic Sodium Poly(2-acrylamido-2-methylpropanesulfonates) in the Presence of a Hydrophobically Modified Cationic Cellulose Ether. Macromolecules 2003. [DOI: 10.1021/ma034077u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roger C. W. Liu
- Faculty of Pharmacy and Department of Chemistry, University of Montreal, C. P. 6128 succursale Centre-ville, Montreal, Quebec H3C 3J7, Canada, and Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Yotaro Morishima
- Faculty of Pharmacy and Department of Chemistry, University of Montreal, C. P. 6128 succursale Centre-ville, Montreal, Quebec H3C 3J7, Canada, and Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Françoise M. Winnik
- Faculty of Pharmacy and Department of Chemistry, University of Montreal, C. P. 6128 succursale Centre-ville, Montreal, Quebec H3C 3J7, Canada, and Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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24
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Chen X, Knight DP, Vollrath F. Rheological characterization of nephila spidroin solution. Biomacromolecules 2002; 3:644-8. [PMID: 12099805 DOI: 10.1021/bm0156126] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the results of an investigation into the rheology of solutions of natural spider silk dope (spinning solution). We demonstrate that dilute dope solutions showed only shear thinning as the shear rate increased while more concentrated solutions showed an initial shear thinning followed by a shear thickening and a subsequent decline in viscosity. The critical shear rate for shear thickening depended on dope concentration and was very low in concentrated solutions. This helps to explain how spiders are able to spin silk at very low draw rates and why they use a very concentrated dope solution. We also show that the optimum shear rate for shear thickening in moderately concentrated solutions occurred at pH 6.3 close to the observed pH at the distal end of the spider's spinning duct. Finally, we report that the addition of K(+) ions to dilute dope solutions produced a spontaneous formation of nanofibrils that subsequently aggregated and precipitated. This change was not seen after the addition of other common cations. Taken together, these observations support the hypothesis that the secretion of H(+) and K(+) by the spider's duct together with moderate strain rates produced during spinning induce a phase separation in the silk dope in which the silk protein (spidroin) molecules are converted into insoluble nanofibrils.
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Affiliation(s)
- Xin Chen
- Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK.
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25
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Chen X, Knight DP, Shao Z, Vollrath F. Regenerated Bombyx silk solutions studied with rheometry and FTIR. POLYMER 2001. [DOI: 10.1016/s0032-3861(01)00541-9] [Citation(s) in RCA: 127] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Liu RCW, Morishima Y, Winnik FM. A Rheological Evaluation of the Interactions in Water between a Cationic Cellulose Ether and Sodium Poly(2-acrylamido-2-methylpropanesulfonates). Macromolecules 2001. [DOI: 10.1021/ma011260j] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roger C. W. Liu
- Faculty of Pharmacy and Department of Chemistry, University of Montréal, C.P. 6128 succursale Centre-ville, Montréal, QC, Canada H3C 3J7, and Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Yotaro Morishima
- Faculty of Pharmacy and Department of Chemistry, University of Montréal, C.P. 6128 succursale Centre-ville, Montréal, QC, Canada H3C 3J7, and Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Françoise M. Winnik
- Faculty of Pharmacy and Department of Chemistry, University of Montréal, C.P. 6128 succursale Centre-ville, Montréal, QC, Canada H3C 3J7, and Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Bokias G, Hourdet D, Iliopoulos I. Positively Charged Amphiphilic Polymers Based on Poly(N-isopropylacrylamide): Phase Behavior and Shear-Induced Thickening in Aqueous Solution. Macromolecules 2000. [DOI: 10.1021/ma991409f] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G. Bokias
- Laboratoire de Physico-chimie Macromoléculaire, UMR-7615, ESPCI-CNRS-UPMC, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - D. Hourdet
- Laboratoire de Physico-chimie Macromoléculaire, UMR-7615, ESPCI-CNRS-UPMC, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - I. Iliopoulos
- Laboratoire de Physico-chimie Macromoléculaire, UMR-7615, ESPCI-CNRS-UPMC, 10 rue Vauquelin, 75231 Paris Cedex 05, France
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29
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Briceño M. Rheology of Suspensions and Emulsions. DRUGS AND THE PHARMACEUTICAL SCIENCES 2000. [DOI: 10.1201/b14005-17] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Chassenieux C, Tassin JF, Gohy JF, Jérôme R. Elongation of Telechelic Ionomers under Shear: a Rheological and Rheo-optical Study. Macromolecules 2000. [DOI: 10.1021/ma991707c] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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