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Badr MM, Keshawy M, El‐mesallamy SM, Ibrahim FA, El‐Shafie M, Hasan AMA. Physicochemical Studies on the Effect of Hexamine Addition and Ratio on the Properties of Acrylonitrile Butadiene Rubber Composites. ChemistrySelect 2022. [DOI: 10.1002/slct.202201129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Magd M. Badr
- Polymer Laboratory Petrochemical Department Egyptian Petroleum Research Institute Cairo, Postal Code 11727 Egypt
| | - Mohamed Keshawy
- Petroleum Applications Department Egyptian Petroleum Research Institute Cairo, Postal Code 11727 Egypt
| | - Salwa M. El‐mesallamy
- Polymer Laboratory Petrochemical Department Egyptian Petroleum Research Institute Cairo, Postal Code 11727 Egypt
| | - F. A. Ibrahim
- Department of Physics Faculty of Science Al-Arish University Al-Arish Egypt
| | - M. El‐Shafie
- Petroleum Applications Department Egyptian Petroleum Research Institute Cairo, Postal Code 11727 Egypt
| | - Abdulrahiem M. A. Hasan
- Petroleum Applications Department Egyptian Petroleum Research Institute Cairo, Postal Code 11727 Egypt
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Wang L, Lan X, Xu W, Du Q, Deng S, Jia D. Effects of Glyceryl Monostearate on the Retrogradation of Pea Starch. STARCH-STARKE 2022. [DOI: 10.1002/star.202100264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ling Wang
- College of Biomass Science & Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Xuyue Lan
- College of Biomass Science & Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Wen Xu
- College of Biomass Science & Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Qinling Du
- College of Biomass Science & Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Sha Deng
- College of Biomass Science & Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Dongying Jia
- College of Biomass Science & Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
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Pinto E, Aggrey WN, Boakye P, Amenuvor G, Sokama-Neuyam YA, Fokuo MK, Karimaie H, Sarkodie K, Adenutsi CD, Erzuah S, Rockson MAD. Cellulose processing from biomass and its derivatization into carboxymethylcellulose: A review. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2021.e01078] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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An Insight into Amorphous Shear Band in Magnetorheological Solid by Atomic Force Microscope. MATERIALS 2021; 14:ma14164384. [PMID: 34442907 PMCID: PMC8402054 DOI: 10.3390/ma14164384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/29/2021] [Accepted: 07/31/2021] [Indexed: 12/04/2022]
Abstract
Micro mechanism consideration is critical for gaining a thorough understanding of amorphous shear band behavior in magnetorheological (MR) solids, particularly those with viscoelastic matrices. Heretofore, the characteristics of shear bands in terms of formation, physical evolution, and response to stress distribution at the localized region have gone largely unnoticed and unexplored. Notwithstanding these limitations, atomic force microscopy (AFM) has been used to explore the nature of shear band deformation in MR materials during stress relaxation. Stress relaxation at a constant low strain of 0.01% and an oscillatory shear of defined test duration played a major role in the creation of the shear band. In this analysis, the localized area of the study defined shear bands as varying in size and dominantly deformed in the matrix with no evidence of inhibition by embedded carbonyl iron particles (CIPs). The association between the shear band and the adjacent zone was further studied using in-phase imaging of AFM tapping mode and demonstrated the presence of localized affected zone around the shear band. Taken together, the results provide important insights into the proposed shear band deformation zone (SBDZ). This study sheds a contemporary light on the contentious issue of amorphous shear band deformation behavior and makes several contributions to the current literature.
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Asnawi A, Hamsan M, Aziz S, Kadir M, Matmin J, Yusof Y. Impregnation of [Emim]Br ionic liquid as plasticizer in biopolymer electrolytes for EDLC application. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Alam MN, Kumar V, Potiyaraj P, Lee DJ, Choi J. Mutual dispersion of graphite–silica binary fillers and its effects on curing, mechanical, and aging properties of natural rubber composites. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03608-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Mariano G, Gomes de Sá L, Carmo da Silva E, Santos M, Cardozo Fh J, Lira B, Barbosa E, Araujo A, Leite J, Ramada M, Bloch Jr. C, Oliveira A, Chaker J, Brand G. Characterization of novel human intragenic antimicrobial peptides, incorporation and release studies from ureasil-polyether hybrid matrix. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 119:111581. [DOI: 10.1016/j.msec.2020.111581] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 11/25/2022]
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Brza MA, Aziz SB, Anuar H, Ali F, Dannoun EMA, Mohammed SJ, Abdulwahid RT, Al-Zangana S. Tea from the drinking to the synthesis of metal complexes and fabrication of PVA based polymer composites with controlled optical band gap. Sci Rep 2020; 10:18108. [PMID: 33093604 PMCID: PMC7581529 DOI: 10.1038/s41598-020-75138-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 10/12/2020] [Indexed: 02/07/2023] Open
Abstract
In the present study black tea extract (BTE) solution which is familiar for drinking was used to prepare cerium metal-complexes (Ce(III)-complex). The prepared Ce(III)-complex was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and UV–Vis spectroscopy. The results indicate that BTE solution is a novel green coordination chemistry approach for the synthesis of metal complexes. The outcomes signify that coordination occurs between cerium cations and polyphenols. The synthesis of metal-complexes with superior absorption performance in the visible region is a challenge for optoelectronic device applications. The suspended Ce(III)-complex in distilled water was mixed with poly (vinyl alcohol) (PVA) polymer to fabricate PVA/ Ce(III)-complex composites with controlled optical properties. The PVA/Ce(III)-complexes composite films were characterized by FTIR, XRD, and UV–Vis spectroscopy. The XRD findings confirms the amorphous structure for the synthesized Ce(III)-complexes. The addition of Ce(III)-complex into the PVA host polymer led to the growth of polymer composites with controllable small optical band gaps. It is shown by the FTIR spectra of the composite films that the functional groups of the host PVA have a vigorous interaction with the Ce(III)-complex. The XRD deconvolution on PVA composites reveals the amorphous phase enlargement with increasing Ce(III)-complex concentration. It is indicated in the atomic force microscopy (AFM) that the surface roughness in the doped PVA films increases with the increase of the Ce(III)-complex. There is a decrease in absorption edge from 5.7 to 1.7 eV. It becomes possible to recognize the type of electron transition by studying both the Tauc's model and optical dielectric loss (ɛi) parameter.
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Affiliation(s)
- M A Brza
- Department of Manufacturing and Materials Engineering, Faculty of Engineering, International Islamic University of Malaysia, Kuala Lumpur, Gombak, Malaysia
| | - Shujahadeen B Aziz
- Prof. Hameeds Advanced Polymeric Materials Research Lab, Department of Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani, Kurdistan Regional Government, Iraq. .,Department of Civil Engineering, College of Engineering, Komar University of Science and Technology, Sulaimani, 46001, Kurdistan Regional Government, Iraq.
| | - H Anuar
- Department of Manufacturing and Materials Engineering, Faculty of Engineering, International Islamic University of Malaysia, Kuala Lumpur, Gombak, Malaysia
| | - Fathilah Ali
- Department of Biotechnology Engineering, Faculty of Engineering, International Islamic University of Malaysia, 53100, Kuala Lumpur, Gombak, Malaysia
| | - Elham M A Dannoun
- General Science Department, Woman Campus, Prince Sultan University, P. O. Box 66833, Riyadh, 11586, Saudi Arabia
| | - Sewara J Mohammed
- Department of Chemistry, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani, Kurdistan Regional Government, Iraq
| | - Rebar T Abdulwahid
- Prof. Hameeds Advanced Polymeric Materials Research Lab, Department of Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani, Kurdistan Regional Government, Iraq.,Department of Physics, College of Education, University of Sulaimani, Old Campus, Sulaimani, 46001, Kurdistan Regional Government, Iraq
| | - Shakhawan Al-Zangana
- Department of Physics, College of Education, University of Garmian, Kalar, 46021, Kurdistan Regional Government, Iraq
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Ito RM, de Souza CC, Gandarilla AMD, de Oliveira LM, Brito WR, Sanches EA, Matos RS, da Fonseca Filho HD. Micromorphology and microtexture evaluation of poly(o-ethoxyaniline) films using atomic force microscopy and fractal analysis. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02262-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kumaresan S, Rokade DS, Marathe YN, Ingole PG, Pawar RR, Pol HV, Bajaj HC. Synthesis and characterization of nylon 6 polymer nanocomposite using organically modified Indian bentonite. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2579-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Carbon-Based Aeronautical Epoxy Nanocomposites: Effectiveness of Atomic Force Microscopy (AFM) in Investigating the Dispersion of Different Carbonaceous Nanoparticles. Polymers (Basel) 2019; 11:polym11050832. [PMID: 31072028 PMCID: PMC6572032 DOI: 10.3390/polym11050832] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 04/29/2019] [Accepted: 05/02/2019] [Indexed: 11/16/2022] Open
Abstract
The capability of Atomic Force Microscopy (AFM) to characterize composite material interfaces can help in the design of new carbon-based nanocomposites by providing useful information on the structure-property relationship. In this paper, the potentiality of AFM is explored to investigate the dispersion and the morphological features of aeronautical epoxy resins loaded with several carbon nanostructured fillers. Fourier Transform Infrared Spectroscopy (FTIR) and thermal investigations of the formulated samples have also been performed. The FTIR results show that, among the examined nanoparticles, exfoliated graphite (EG) with a predominantly two-dimensional (2D) shape favors the hardening process of the epoxy matrix, increasing its reaction rate. As evidenced by the FTIR signal related to the epoxy stretching frequency (907 cm-1), the accelerating effect of the EG sample increases as the filler concentration increases. This effect, already observable for curing treatment of 60 min conducted at the low temperature of 125 °C, suggests a very fast opening of epoxy groups at the beginning of the cross-linking process. For all the analyzed samples, the percentage of the curing degree (DC) goes beyond 90%, reaching up to 100% for the EG-based nanocomposites. Besides, the addition of the exfoliated graphite enhances the thermostability of the samples up to about 370 °C, even in the case of very low EG percentages (0.05% by weight).
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Rational design of aromatic surfactants for graphene/natural rubber latex nanocomposites with enhanced electrical conductivity. J Colloid Interface Sci 2018; 516:34-47. [DOI: 10.1016/j.jcis.2018.01.041] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 01/10/2018] [Accepted: 01/10/2018] [Indexed: 01/14/2023]
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Bisht G, Zaidi MGH, Rayamajhi S. Supercritical carbon dioxide–assisted synthesis of stimuli-responsive magnetic poly(N-isopropylacrylamide)–ferrite biocompatible nanocomposites for targeted and controlled drug delivery. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1263949] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Gunjan Bisht
- Department of Chemical Science and Engineering, School of Engineering, Kathmandu University, Dhulikhel, Nepal
| | - M. G. H. Zaidi
- Department of Chemistry, College of Basic Science, G. B. Pant University of Agriculture and Technology, Pantnagar, India
| | - Sagar Rayamajhi
- Department of Biotechnology, School of Science, Kathmandu University, Dhulikhel, Nepal
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