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Maciejewska M, Zaleski R, Gorgol M. Investigation of porous structure polymeric materials based on 1-vinyl-2-pyrrolidone. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Malgorzata Maciejewska
- Faculty of Chemistry, Department of Polymer Chemistry; Maria Curie-Skłodowska University; Gliniana 33 Lublin 20-614 Poland
| | - Radoslaw Zaleski
- Institute of Physics, Department of Nuclear Methods; Maria Curie-Sklodowska University; pl. M. Curie-Sklodowskej 1 Lublin 20-031 Poland
| | - Marek Gorgol
- Institute of Physics, Department of Nuclear Methods; Maria Curie-Sklodowska University; pl. M. Curie-Sklodowskej 1 Lublin 20-031 Poland
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2
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Kierys A, Krasucka P, Grochowicz M. Vapour-phase method in the synthesis of polymer-ibuprofen sodium-silica gel composites. Saudi Pharm J 2017; 25:972-980. [PMID: 29158703 PMCID: PMC5681307 DOI: 10.1016/j.jsps.2017.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/16/2017] [Indexed: 12/03/2022] Open
Abstract
The study discusses the synthesis of polymer-silica composites comprising water soluble drug (ibuprofen sodium, IBS). The polymers selected for this study were poly(TRIM) and poly(HEMA-co-TRIM) produced in the form of permanently porous beads via the suspension-emulsion polymerization method. The acid and base set ternary composites were prepared by the saturation of the solid dispersions of drug (poly(TRIM)-IBS and/or poly(HEMA-co-TRIM)-IBS) with TEOS, and followed by their exposition to the vapour mixture of water and ammonia, or water and hydrochloric acid, at autogenous pressure. The conducted analyses reveal that the internal structure and total porosity of the resulting composites strongly depend on the catalyst which was used for silica precursor gelation. The parameters characterizing the porosity of both of the acid set composites are much lower than the parameters of the base set composites. Moreover, the basic catalyst supplied in the vapour phase does not affect the ibuprofen sodium molecules, whereas the acid one causes transformation of the ibuprofen sodium into the sodium chloride and a derivative of propanoic acid, which is poorly water soluble. The release profiles of ibuprofen sodium from composites demonstrate that there are differences in the rate and efficiency of drug desorption from them. They are mainly affected by the chemical character of the polymeric carrier but are also associated with the restricted swelling of the composites in the buffer solution after precipitation of silica gel.
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Affiliation(s)
- Agnieszka Kierys
- Maria Curie-Sklodowska University, Faculty of Chemistry, Department of Adsorption, 3 M. Curie-Sklodowska Sq., 20-031 Lublin, Poland
| | - Patrycja Krasucka
- Maria Curie-Sklodowska University, Faculty of Chemistry, Department of Adsorption, 3 M. Curie-Sklodowska Sq., 20-031 Lublin, Poland
| | - Marta Grochowicz
- Maria Curie-Sklodowska University, Faculty of Chemistry, Department of Polymer Chemistry, 33 Gliniana Str, 20-614 Lublin, Poland
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3
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TG/DSC/FTIR studies on the oxidative decomposition of polymer-silica composites loaded with sodium ibuprofen. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.03.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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4
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Mondal SS, Dey S, Attallah AG, Krause-Rehberg R, Janiak C, Holdt HJ. Insights into the pores of microwave-assisted metal–imidazolate frameworks showing enhanced gas sorption. Dalton Trans 2017; 46:4824-4833. [DOI: 10.1039/c7dt00350a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Microwave assisted synthesized materials have an inherent ability to trap extra linkers, thereby reducing the pore sizes of CE- heating materials to ultra/micropores. These ultramicropores are responsible for high gas sorption.
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Affiliation(s)
| | - Subarna Dey
- Institut für Anorganische Chemie und Strukturchemie
- Heinrich-Heine-Universität Düsseldorf
- Germany
| | - Ahmed G. Attallah
- Institut für Physik
- Martin-Luther-Universität Halle-Wittenberg
- 06120 Halle
- Germany
- Physics Department
| | | | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie
- Heinrich-Heine-Universität Düsseldorf
- Germany
| | - Hans-Jürgen Holdt
- Institut für Chemie
- Anorganische Chemie
- Universität Potsdam
- 14476 Potsdam
- Germany
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5
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Shpotyuk O, Ingram A, Bujňáková Z, Baláž P, Shpotyuk Y. Probing Sub-atomistic Free-Volume Imperfections in Dry-Milled Nanoarsenicals with PAL Spectroscopy. NANOSCALE RESEARCH LETTERS 2016; 11:10. [PMID: 26754936 PMCID: PMC4709335 DOI: 10.1186/s11671-016-1228-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Accepted: 01/05/2016] [Indexed: 05/04/2023]
Abstract
Structural transformations caused by coarse-grained powdering and fine-grained mechanochemical milling in a dry mode were probed in high-temperature modification of tetra-arsenic tetra-sulfide known as β-As4S4. In respect to X-ray diffraction analysis, the characteristic sizes of β-As4S4 crystallites in these coarse- and fine-grained powdered pellets were 90 and 40 nm, respectively. Positron annihilation lifetime spectroscopy was employed to characterize transformations occurred in free-volume structure of these nanoarsenicals. Experimentally measured positron lifetime spectra were parameterized in respect to three- or two-term fitting procedures and respectively compared with those accumulated for single crystalline realgar α-As4S4 polymorph. The effect of coarse-grained powdering was found to result in generation of large amount of positron and positronium Ps trapping sites inside arsenicals in addition to existing ones. In fine-grained powdered β-As4S4 pellets, the positron trapping sites with characteristic free volumes close to bi- and tri-atomic vacancies were evidently dominated. These defects were supposed to originate from grain boundary regions and interfacial free volumes near aggregated β-As4S4 crystallites. Thus, the cumulative production of different positron traps with lifetimes close to defect-related lifetimes in realgar α-As4S4 polymorph was detected in fine-grained milled samples.
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Affiliation(s)
- Oleh Shpotyuk
- Vlokh Institute of Physical Optics, 23, Dragomanov str., 79005, Lviv, Ukraine.
- Jan Dlugosz University, al. Armii Krajowej, 13/15, 42201, Czestochowa, Poland.
| | - Adam Ingram
- Opole University of Technology, 75, Ozimska str., 45370, Opole, Poland
| | - Zdenka Bujňáková
- Institute of Geotechnics of the Slovak Academy of Sciences, 45, Watsonova str., 04001, Košice, Slovakia
| | - Peter Baláž
- Institute of Geotechnics of the Slovak Academy of Sciences, 45, Watsonova str., 04001, Košice, Slovakia
| | - Yaroslav Shpotyuk
- Ivan Franko National University of Lviv, 107, Tarnavskogo str., 79017, Lviv, Ukraine
- Centre for Innovation and Transfer of Natural Sciences and Engineering Knowledge, University of Rzeszow, 1, Pigonia str., 35-959, Rzeszow, Poland
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6
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Deore AV, Hareesh K, Ramya P, Ianni E, Guagliardo P, Samarin S, Williams JF, Sanjeev G, Dahiwale SS, Kanjilal D, Dhole NA, Kodam KM, Bhoraskar VN, Dhole SD. Structural and antibacterial properties of a γ‐radiation‐assisted,
in situ
prepared silver–polycarbonate matrix. J Appl Polym Sci 2016. [DOI: 10.1002/app.43729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- A. V. Deore
- Microtron Accelerator LaboratoryDepartment of PhysicsSavitribai Phule Pune UniversityPune411007 India
| | - K. Hareesh
- Microtron Accelerator LaboratoryDepartment of PhysicsSavitribai Phule Pune UniversityPune411007 India
| | - P. Ramya
- ARC Centre for Antimatter–Matter StudiesSchool of PhysicsUniversity of Western AustraliaCrawley Western Australia6009 Australia
| | - E. Ianni
- ARC Centre for Antimatter–Matter StudiesSchool of PhysicsUniversity of Western AustraliaCrawley Western Australia6009 Australia
| | - P. Guagliardo
- Centre for Microscopy, Characterisation, and AnalysisUniversity of Western AustraliaCrawley Western Australia6009 Australia
| | - S. Samarin
- ARC Centre for Antimatter–Matter StudiesSchool of PhysicsUniversity of Western AustraliaCrawley Western Australia6009 Australia
| | - J. F. Williams
- ARC Centre for Antimatter–Matter StudiesSchool of PhysicsUniversity of Western AustraliaCrawley Western Australia6009 Australia
| | - G. Sanjeev
- Microtron CentreDepartment of Studies in PhysicsMangalore UniversityMangalore574199 India
| | - S. S. Dahiwale
- Microtron Accelerator LaboratoryDepartment of PhysicsSavitribai Phule Pune UniversityPune411007 India
| | - D. Kanjilal
- Inter‐University Accelerator CentreNew Delhi110067 India
| | - N. A. Dhole
- Department of ChemistrySavitribai Phule Pune UniversityPune411007 India
| | - K. M. Kodam
- Department of ChemistrySavitribai Phule Pune UniversityPune411007 India
| | - V. N. Bhoraskar
- Microtron Accelerator LaboratoryDepartment of PhysicsSavitribai Phule Pune UniversityPune411007 India
| | - S. D. Dhole
- Microtron Accelerator LaboratoryDepartment of PhysicsSavitribai Phule Pune UniversityPune411007 India
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7
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Kierys A, Kasperek R, Krasucka P, Goworek J. Encapsulation of diclofenac sodium within polymer beads by silica species via vapour-phase synthesis. Colloids Surf B Biointerfaces 2016; 142:30-37. [DOI: 10.1016/j.colsurfb.2016.02.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/25/2016] [Accepted: 02/18/2016] [Indexed: 01/17/2023]
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8
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Sharma SK, Prakash J, Sudarshan K, Sen D, Mazumder S, Pujari PK. Structure at Interphase of Poly(vinyl alcohol)–SiC Nanofiber Composite and Its Impact on Mechanical Properties: Positron Annihilation and Small-Angle X-ray Scattering Studies. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01095] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- S. K. Sharma
- Radiochemistry
Division, ‡Powder Metallurgy Division, and §Solid State Physics Division Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - J. Prakash
- Radiochemistry
Division, ‡Powder Metallurgy Division, and §Solid State Physics Division Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - K. Sudarshan
- Radiochemistry
Division, ‡Powder Metallurgy Division, and §Solid State Physics Division Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - D. Sen
- Radiochemistry
Division, ‡Powder Metallurgy Division, and §Solid State Physics Division Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - S. Mazumder
- Radiochemistry
Division, ‡Powder Metallurgy Division, and §Solid State Physics Division Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - P. K. Pujari
- Radiochemistry
Division, ‡Powder Metallurgy Division, and §Solid State Physics Division Bhabha Atomic Research Centre, Mumbai 400 085, India
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9
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Sharma SK, Prakash J, Pujari PK. Effects of the molecular level dispersion of graphene oxide on the free volume characteristics of poly(vinyl alcohol) and its impact on the thermal and mechanical properties of their nanocomposites. Phys Chem Chem Phys 2015; 17:29201-9. [DOI: 10.1039/c5cp05278e] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The effects of the molecular dispersion of graphene oxide on (A) the crystallinity of PVA–GO nanocomposite films and (B) nanohole size distribution in the amorphous region of PVA–GO nanocomposite films.
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Affiliation(s)
- S. K. Sharma
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - J. Prakash
- Powder Metallurgy Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - P. K. Pujari
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
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10
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Maciejewska M. Influence of the filler on thermal properties of porous VP-TRIM copolymers. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 2014; 119:507-513. [PMID: 26028990 PMCID: PMC4447285 DOI: 10.1007/s10973-014-4118-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 08/19/2014] [Indexed: 06/04/2023]
Abstract
In this paper, the synthesis and characterization of thermal properties of porous copolymers 1-vinyl-2-pyrrolidone with trimethylolpropane trimethacrylate are presented. They were obtained by suspension polymerization as a pure polymers or composite materials with different inorganic fillers. The influence of the type of filler on the textural and thermal properties was investigated in details. It was found that the value of the porous surface area of composites is much lower than in the case of pure copolymers. Thermal properties of the obtained materials were investigated by the means of thermogravimetry and differential scanning calorimetry.
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Affiliation(s)
- M. Maciejewska
- Faculty of Chemistry, Maria Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 3, 20-031 Lublin, Poland
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11
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Kierys A. Synthesis of aspirin-loaded polymer-silica composites and their release characteristics. ACS APPLIED MATERIALS & INTERFACES 2014; 6:14369-14376. [PMID: 25046207 DOI: 10.1021/am5036384] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study describes a novel approach to the synthesis of polymer-drug-silica nanocomposites via encapsulation/isolation of drug molecules, introduced into the polymer matrix by the silica gel. For the first time, tetraethoxysilane (TEOS) gelation in the vapor phase of the acidic catalyst is presented as an efficient method to enter the silica gel nanoparticles into the polymer-aspirin conjugate. The conducted studies reveal that the internal structure of the polymer carrier is significantly reorganized after the embedding of aspirin molecules and the silica gel. The total porosity of the polymer-drug-silica nanocomposites and the molecular structure of the silica gel embedded in the system strongly depend on the conditions of the silica source transformation. Additionally, the release of the drug was fine-tuned by adapting the conditions of hydrolysis and condensation of the silica gel precursor. Finally, to prove the usefulness of the proposed synthesis, the controlled release of aspirin from the polymer-drug-silica nanocomposites is demonstrated.
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Affiliation(s)
- Agnieszka Kierys
- Department of Adsorption, Faculty of Chemistry, Maria Curie-Sklodowska University , M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
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12
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Sharma SK, Prakash J, Bahadur J, Sudarshan K, Maheshwari P, Mazumder S, Pujari PK. Investigation of nanolevel molecular packing and its role in thermo-mechanical properties of PVA–fMWCNT composites: positron annihilation and small angle X-ray scattering studies. Phys Chem Chem Phys 2014; 16:1399-408. [DOI: 10.1039/c3cp54054e] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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13
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Sharma SK, Prakash J, Bahadur J, Sudarshan K, Maheshwari P, Mazumder S, Pujari PK. Investigation of nanolevel molecular packing and its role in thermo-mechanical properties of PVA–fMWCNT composites: positron annihilation and small angle X-ray scattering studies. Phys Chem Chem Phys 2014. [DOI: 10.7208/chicago/9780226185941.001.0001] [Citation(s) in RCA: 3167] [Impact Index Per Article: 316.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Sharma SK, Bahadur J, Patil PN, Maheshwari P, Mukherjee S, Sudarshan K, Mazumder S, Pujari PK. Revealing the Nano-Level Molecular Packing in Chitosan-NiO Nanocomposite by Using Positron Annihilation Spectroscopy and Small-Angle X-ray Scattering. Chemphyschem 2013; 14:1055-62. [DOI: 10.1002/cphc.201200902] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Indexed: 11/06/2022]
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16
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Kierys A, Zaleski R, Buda W, Pikus S, Dziadosz M, Goworek J. Nanostructured polymer-titanium composites and titanium oxide through polymer swelling in titania precursor. Colloid Polym Sci 2012; 291:1463-1470. [PMID: 23741082 PMCID: PMC3669504 DOI: 10.1007/s00396-012-2881-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 11/02/2012] [Accepted: 12/09/2012] [Indexed: 11/28/2022]
Abstract
Polymer (XAD7HP)/Ti4+ nanocomposites were prepared through the swelling of polymer in titanium (IV) ethoxide as a titanium dioxide precursor. The nanocomposite beads exhibit relatively high porosity different than the porosity of the initial polymer. Thermal treatment of composite particles up to 200 °C in vacuum causes the change of their internal structure. At higher temperature, the components of composite become more tightly packed. Calcination at 600 °C and total removal of polymer produce spherically shaped TiO2 condensed phase as determined by XRD. Thermally treated composites show the substantial change of pore dimensions within micro- and mesopores. The presence of micropores and their transformation during thermal processing was studied successfully by positron annihilation lifetime spectroscopy (PALS). The results derived from PALS experiment were compared with those obtaining from low-temperature nitrogen adsorption data.
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Affiliation(s)
- A Kierys
- Department of Adsorption, Faculty of Chemistry, M. Curie-Sklodowska University, M. Curie-Sklodowska sq. 3, 20-031 Lublin, Poland
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17
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Awad S, Chen HM, Grady BP, Paul A, Ford WT, Lee LJ, Jean YC. Positron Annihilation Spectroscopy of Polystyrene Filled with Carbon Nanomaterials. Macromolecules 2012. [DOI: 10.1021/ma202458c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Somia Awad
- Department of Chemistry, University of Missouri—Kansas City, 5009 Rockhill
Rd., Kansas City, Missouri
64110, United States
| | - H. M. Chen
- Department of Chemistry, University of Missouri—Kansas City, 5009 Rockhill
Rd., Kansas City, Missouri
64110, United States
| | - Brian P. Grady
- Carbon Nanotube
Technology Center
(CaNTeC) and School of Chemical, Biological, and Materials Engineering, University of Oklahoma, Norman, Oklahoma 73019, United
States
| | - Abhijit Paul
- Department
of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078,
United States
| | - Warren T. Ford
- Department
of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078,
United States
| | - L. James Lee
- Department of Chemical
and Biomolecular
Engineering, The Ohio State University,
Columbus, Ohio 43210, United States
| | - Y. C. Jean
- Department of Chemistry, University of Missouri—Kansas City, 5009 Rockhill
Rd., Kansas City, Missouri
64110, United States
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18
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Sharma SK, Prakash J, Sudarshan K, Maheshwari P, Sathiyamoorthy D, Pujari PK. Effect of interfacial interaction on free volumes in phenol-formaldehyde resin–carbon nanotube composites: positron annihilation lifetime and age momentum correlation studies. Phys Chem Chem Phys 2012; 14:10972-8. [DOI: 10.1039/c2cp41057e] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Zaleski R, Kierys A, Dziadosz M, Goworek J, Halasz I. Positron annihilation and N2 adsorption for nanopore determination in silica-polymer composites. RSC Adv 2012. [DOI: 10.1039/c2ra20147j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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