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Real-time monitoring of the starch cross-linking with citric acid by chemorheological analysis. Carbohydr Polym 2023; 311:120733. [PMID: 37028869 DOI: 10.1016/j.carbpol.2023.120733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 01/25/2023] [Accepted: 02/19/2023] [Indexed: 02/24/2023]
Abstract
Cross-linking has been used as a strategy to improve the mechanical properties of starch films. However, the concentration of the cross-linking agent and the cure time and temperature determine the structure and properties of the modified starch. This article, for the first time, reports the chemorheological study of cross-linked starch films with citric acid (CA) through monitoring the storage modulus as a function of time G'(t). In this study, a CA concentration of 10 phr showed a pronounced increase of G'(t) during the cross-linking of starch, followed by a constant plateau. Analyses of infrared spectroscopy validated the result chemorheological. In addition, the mechanical properties showed a plasticizing effect of the CA at high concentrations. This research demonstrated that chemorheology is a valuable tool in the study of starch cross-linking, which becomes a promising technique to evaluate the cross-linking of other polysaccharides and cross-linking agents.
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2
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Zhou M, Foudazi R. Effect of Cosurfactant on Structure and Properties of Polymerized High Internal Phase Emulsions (PolyHIPEs). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7907-7918. [PMID: 34153186 DOI: 10.1021/acs.langmuir.1c00419] [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
Porous polymerized high internal phase emulsion (polyHIPE) monoliths are synthesized by using Span 80 with different cosurfactants. The results reveal that the void size can be reduced by employing cosurfactants, except for Tween 20. Furthermore, the openness of polyHIPEs changes by using different cosurfactants or by varying their concentration. To further investigate the effect of cosurfactants, we perform rheology measurements on the interface of the aqueous and oil phase. This study demonstrates the important role of interfacial elasticity in the successful preparation of polyHIPEs with different morphologies. Additionally, this study suggests that the increase in interfacial elasticity hinders the formation of interconnections between pores, known as windows. Finally, the compression test is performed to investigate the effect of the pore structure on the mechanical properties.
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Affiliation(s)
- Muchu Zhou
- Department of Chemical and Materials Engineering, New Mexico State University, Las Cruces, New Mexico 88003, United States
| | - Reza Foudazi
- Department of Chemical and Materials Engineering, New Mexico State University, Las Cruces, New Mexico 88003, United States
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3
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4
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Effect of curing bath conditions on the morphology and structure of poly(high internal phase emulsion) fibers. J Appl Polym Sci 2021. [DOI: 10.1002/app.50019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Saadat Y, Kim K, Foudazi R. Initiator-dependent kinetics of lyotropic liquid crystal-templated thermal polymerization. Polym Chem 2021. [DOI: 10.1039/d1py00127b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this study, we show that how the locus of initiation can change kinetics and mechanical properties of polymerized lyotropic liquid crystals.
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Affiliation(s)
- Younes Saadat
- Department of Chemical and Materials Engineering
- New Mexico State University
- Las Cruces
- USA
| | - Kyungtae Kim
- Materials Physics and Applications Division
- Center for Integrated Nanotechnologies
- Los Alamos National Laboratory
- Los Alamos
- USA
| | - Reza Foudazi
- Department of Chemical and Materials Engineering
- New Mexico State University
- Las Cruces
- USA
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6
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Piechowicz M, Chiarizia R, Skanthakumar S, Rowan SJ, Soderholm L. Leveraging Actinide Hydrolysis Chemistry for Targeted Th and U Separations using Amidoxime‐Functionalized Poly(HIPE)s. Chemphyschem 2020; 21:1157-1165. [DOI: 10.1002/cphc.202000155] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/28/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Marek Piechowicz
- Chemical Sciences and Engineering Division Argonne National Laboratory Argonne IL 60439 USA
- Department of Chemistry University of Chicago 5640 S Ellis Avenue Chicago, Illinois 60637 USA
| | - Renato Chiarizia
- Chemical Sciences and Engineering Division Argonne National Laboratory Argonne IL 60439 USA
| | - S. Skanthakumar
- Chemical Sciences and Engineering Division Argonne National Laboratory Argonne IL 60439 USA
| | - Stuart J. Rowan
- Chemical Sciences and Engineering Division Argonne National Laboratory Argonne IL 60439 USA
- Department of Chemistry University of Chicago 5640 S Ellis Avenue Chicago, Illinois 60637 USA
- Pritzker School for Molecular Engineering University of Chicago 5640 S. Ellis Avenue Chicago, Illinois 60637 USA
| | - L. Soderholm
- Chemical Sciences and Engineering Division Argonne National Laboratory Argonne IL 60439 USA
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7
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Zhao B, Gedler G, Manas-Zloczower I, Rowan SJ, Feke DL. Fluid transport in open-cell polymeric foams: effect of morphology and surface wettability. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-1983-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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8
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Qavi S, Bandegi A, Firestone M, Foudazi R. Polymerization in soft nanoconfinement of lamellar and reverse hexagonal mesophases. SOFT MATTER 2019; 15:8238-8250. [PMID: 31576891 DOI: 10.1039/c9sm01565e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This work describes the kinetics of thermal polymerization in nanoconfined domains of lyotropic liquid crystal (LLC) templates by using chemorheological studies at different temperatures. We investigate lamellar and reverse hexagonal LLC phases with the same concentration of the monomeric phase. Results show that the mesophase structures remain intact during thermal polymerization with very slight changes in the domain size. The polymerization rate decreases in the nanoconfined structure compared to the bulk state due to the segregation effect, which increases the local monomer concentration and enhances the termination rate. Additionally, the polymerization rate is faster in the studied reverse hexagonal systems compared to the lamellar ones due to their lower degree of confinement. A higher degree of confinement also induces a lower monomer conversion. Differential scanning calorimetry confirms the obtained results from chemorheology.
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Affiliation(s)
- Sahar Qavi
- Department of Chemical and Materials Engineering, New Mexico State University, Las Cruces, NM 88003, USA.
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9
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Malakian A, Zhou M, Zowada RT, Foudazi R. Synthesis and
in situ
functionalization of microfiltration membranes via high internal phase emulsion templating. POLYM INT 2019. [DOI: 10.1002/pi.5828] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anna Malakian
- Department of Chemical and Materials EngineeringNew Mexico State University Las Cruces NM USA
| | - Muchu Zhou
- Department of Chemical and Materials EngineeringNew Mexico State University Las Cruces NM USA
| | - Ryan T Zowada
- Department of Chemical and Materials EngineeringNew Mexico State University Las Cruces NM USA
| | - Reza Foudazi
- Department of Chemical and Materials EngineeringNew Mexico State University Las Cruces NM USA
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10
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Whitely ME, Robinson JL, Stuebben MC, Pearce HA, McEnery MAP, Cosgriff-Hernandez E. Prevention of Oxygen Inhibition of PolyHIPE Radical Polymerization using a Thiol-based Crosslinker. ACS Biomater Sci Eng 2017; 3:409-419. [PMID: 29104917 DOI: 10.1021/acsbiomaterials.6b00663] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Polymerized high internal phase emulsions (polyHIPEs) are highly porous constructs currently under investigation as tissue engineered scaffolds. We previously reported on the potential of redox-initiated polyHIPEs as injectable bone grafts that space fill irregular defects with improved integration and rapid cure. Upon subsequent investigation, the radical-initiated cure of these systems rendered them susceptible to oxygen inhibition with an associated increase in uncured macromer in the clinical setting. In the current study, polyHIPEs with increased resistance to oxygen inhibition were fabricated utilizing a tetrafunctional thiol, pentaerythritol tetrakis(3-mercaptoproprionate), and the biodegradable macromer, propylene fumarate dimethacrylate. Increased concentrations of the tetrathiol additive provided improved oxygen resistance as confirmed by polyHIPE gel fraction while retaining the requisite rapid cure rate, compressive properties, and pore architecture for use as an injectable bone graft. Additionally, thiol-methacrylate polyHIPEs exhibited increased degradation under accelerated conditions and supported critical markers of human mesenchymal stem cell activity. In summary, we have improved upon current methods of fabricating injectable polyHIPE grafts to meet translational design goals of improved polymerization kinetics under clinically relevant conditions without sacrificing key scaffold properties.
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Affiliation(s)
- Michael E Whitely
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, 77843-3120, U.S.A
| | - Jennifer L Robinson
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, 77843-3120, U.S.A
| | - Melissa C Stuebben
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, 77843-3120, U.S.A
| | - Hannah A Pearce
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, 77843-3120, U.S.A
| | - Madison A P McEnery
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, 77843-3120, U.S.A
| | - Elizabeth Cosgriff-Hernandez
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, 77843-3120, U.S.A.,Center for Infectious and Inflammatory Diseases, Texas A&M Health Science Center, Houston, Texas, 77030, U.S.A
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11
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Domenech T, Yang J, Heidlebaugh S, Velankar SS. Three distinct open-pore morphologies from a single particle-filled polymer blend. Phys Chem Chem Phys 2016; 18:4310-5. [PMID: 26808071 DOI: 10.1039/c5cp07576a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ternary mixtures composed of polyisobutylene (PIB), polyethylene oxide (PEO), and silica particles yield three distinct open-pore morphologies depending on the mixture composition: (1) pendular network (particles bonded together by menisci of PEO); (2) capillary aggregate network (particles and PEO form a combined phase with strongly solid-like properties which forms a percolating network); (3) cocontinuous morphology (silica and the PEO form a highly viscous combined phase which retards interfacial tension-driven coarsening). Remarkably, interfacial tension plays altogether different roles in stabilizing these three morphologies: stabilizing the first, not affecting the second, and destabilizing the last. The first two of these morphologies appear to be generalizable to other systems, e.g. to oil/water/particle mixtures. In all three cases, the pores do not collapse even after flow, i.e. all three porous morphologies are amenable to processing.
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Affiliation(s)
- Trystan Domenech
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Junyi Yang
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Samantha Heidlebaugh
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Sachin S Velankar
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA.
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12
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A. C, K. S, J. F. A. SM, Q. W, J. A. P, J. D. MM. On the stability and chemorheology of a urea choline chloride deep-eutectic solvent as an internal phase in acrylic high internal phase emulsions. RSC Adv 2016. [DOI: 10.1039/c6ra18931h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study presents the first detailed investigation on the DES-non ionic surfactant HIPE systems.
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Affiliation(s)
- Carranza A.
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | - Song K.
- School of Renewable Natural Resources
- Louisiana State University Agricultural Center
- Baton Rouge
- USA
| | | | - Wu Q.
- School of Renewable Natural Resources
- Louisiana State University Agricultural Center
- Baton Rouge
- USA
| | - Pojman J. A.
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | - Mota-Morales J. D.
- CONACYT – Centro de Nanociencias y Nanotecnología (CNyN)
- Universidad Nacional Autónoma de México (UNAM)
- Ensenada
- Mexico
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13
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Moglia RS, Whitely M, Dhavalikar P, Robinson J, Pearce H, Brooks M, Stuebben M, Cordner N, Cosgriff-Hernandez E. Injectable polymerized high internal phase emulsions with rapid in situ curing. Biomacromolecules 2014; 15:2870-8. [PMID: 25006990 PMCID: PMC4130241 DOI: 10.1021/bm500754r] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
![]()
Polymerized high internal phase emulsions
(polyHIPEs) have been
utilized in the creation of injectable scaffolds that cure in situ to fill irregular bone defects and potentially improve
tissue healing. Previously, thermally initiated scaffolds required
hours to cure, which diminished the potential for clinical translation.
Here, a double-barrel syringe system for fabricating redox-initiated
polyHIPEs with dramatically shortened cure times upon injection was
demonstrated with three methacrylated macromers. The polyHIPE cure
time, compressive properties, and pore architecture were investigated
with respect to redox initiator chemistry and concentration. Increased
concentrations of redox initiators reduced cure times from hours to
minutes and increased the compressive modulus and strength without
compromising the pore architecture. Additionally, storage of the uncured
emulsion at reduced temperatures for 6 months was shown to have minimal
effects on the resulting graft properties. These studies indicate
that the uncured emulsions can be stored in the clinic until they
are needed and then rapidly cured after injection to rigid, high-porosity
scaffolds. In summary, we have improved upon current methods of generating
injectable polyHIPE grafts to meet translational design goals of long
storage times and rapid curing (<15 min) without sacrificing porosity
or mechanical properties.
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Affiliation(s)
- Robert S Moglia
- Department of Biomedical Engineering, Texas A&M University , College Station, Texas 77843-3120, United States
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