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Sultan M, Hafez OM, Saleh MA. Quality assessment of lemon (Citrus aurantifolia, swingle) coated with self-healed multilayer films based on chitosan/carboxymethyl cellulose under cold storage conditions. Int J Biol Macromol 2022; 200:12-24. [PMID: 34973265 DOI: 10.1016/j.ijbiomac.2021.12.118] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 12/12/2021] [Accepted: 12/18/2021] [Indexed: 12/30/2022]
Abstract
The polyelectrolyte multilayer self-healing coating film of chitosan and carboxymethyl cellulose (PEM-SH) tended to maintain high sensory quality and control physiological and pathological decay of lemon fruits under cold storage. The PEM-SH film was characterized by ATR-IR, XRD, X-ray photoelectron spectroscopy, SEM analysis, swelling ratio, self-healing, and mechanical characteristics. The 3-layered film (3L) exhibited the optimum barrier properties; WVP: 3.32 ± 0.06 g. mm. k Pa-1.h-1.m-2 and GTR: 0.256 ± 0.032 cc.M-2.day-1. The moisture sorption isotherm data were fitted with BET, GAB, and Peleg models and three models showed applicability. The coated fruits exhibit superior features of fruit quality such as reduced weight loss %, respiration rate, and decay symptoms appearance. The 3L-coated fruit showed the lower pectinase enzyme activity (0.689 Ug-1 FW) up to 60 days. As well as, increased total soluble solids, keeping vitamin C of loss and decreasing percentage acidity of juice up to 60 days.
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Affiliation(s)
- Maha Sultan
- Packaging Materials, National Research Centre, 33 El Bohouth St. (former El Tahrir st.), Dokki, Giza P.O. 12622, Egypt
| | - Omaima M Hafez
- Pomology Departments, National Research Centre, 33 El Bohouth St. (former El Tahrir st.), Dokki, Giza P.O. 12622, Egypt
| | - Malaka A Saleh
- Pomology Departments, National Research Centre, 33 El Bohouth St. (former El Tahrir st.), Dokki, Giza P.O. 12622, Egypt
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2
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Meleshko TK, Razina AB, Bogorad NN, Kurlykin MP, Kashina AV, Gofman IV, Ten’kovtsev AV, Yakimansky AV. Synthesis of Poly(ester-graft-methyl methacrylate) on a Macroinitiator with Lateral Sulfonyl Chloride Groups by Atom Transfer Radical Polymerization. POLYMER SCIENCE SERIES B 2021. [DOI: 10.1134/s1560090421040072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract
New polymer brushes with an ester backbone and poly(methyl methacrylate) side chains are synthesized by polycondensation and polymerization methods. The initiating groups are sulfonyl chloride groups laterally attached to the polyester chain. PMMA side chains are grafted by the ATRP method according to the “grafting from” multicenter macroinitiator strategy. The conditions for the polymerization processes in a controlled mode are selected, and the ways of targeted regulation of the degree of polymerization of methacrylate side chains are determined. Using the synthesized copolymers self-supporting films are obtained, and their physical and mechanical properties are studied.
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Chen L, Yu H, Dirican M, Fang D, Tian Y, Yan C, Xie J, Jia D, Liu H, Wang J, Tang F, Zhang X, Tao J. Highly Thermally Stable, Green Solvent Disintegrable, and Recyclable Polymer Substrates for Flexible Electronics. Macromol Rapid Commun 2020; 41:e2000292. [PMID: 32833274 DOI: 10.1002/marc.202000292] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/09/2020] [Indexed: 11/11/2022]
Abstract
Flexible electronics require its substrate to have adequate thermal stability, but current thermally stable polymer substrates are difficult to be disintegrated and recycled; hence, generate enormous electronic solid waste. Here, a thermally stable and green solvent-disintegrable polymer substrate is developed for flexible electronics to promote their recyclability and reduce solid waste generation. Thanks to the proper design of rigid backbones and rational adjustments of polar and bulky side groups, the polymer substrate exhibits excellent thermal and mechanical properties with thermal decomposition temperature (Td,5% ) of 430 °C, upper operating temperature of over 300 °C, coefficient of thermal expansion of 48 ppm K-1 , tensile strength of 103 MPa, and elastic modulus of 2.49 GPa. Furthermore, the substrate illustrates outstanding optical and dielectric properties with high transmittance of 91% and a low dielectric constant of 2.30. Additionally, it demonstrates remarkable chemical and flame resistance. A proof-of-concept flexible printed circuit device is fabricated with this substrate, which demonstrates outstanding mechanical-electrical stability. Most importantly, the substrate can be quickly disintegrated and recycled with alcohol. With outstanding thermally stable properties, accompanied by excellent recyclability, the substrate is particularly attractive for a wide range of electronics to reduce solid waste generation, and head toward flexible and "green" electronics.
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Affiliation(s)
- Linlin Chen
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Huang Yu
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Mahmut Dirican
- Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, NC, 27695-8301, USA
| | - Dongjun Fang
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Yan Tian
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Chaoyi Yan
- Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, NC, 27695-8301, USA
| | - Jingyi Xie
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Dongmei Jia
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Hao Liu
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jiasheng Wang
- Guangzhou Lushan New Materials Co., Ltd, Guangzhou, 510530, China
| | - Fangcheng Tang
- Guangzhou Lushan New Materials Co., Ltd, Guangzhou, 510530, China
| | - Xiangwu Zhang
- Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, NC, 27695-8301, USA
| | - Jinsong Tao
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
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Nekrasova TN, Pautov VD, Anan’eva TD, Meleshko TK, Ivanov IV, Yakimanskii AV. Complexes of Amphiphilic Molecular Brushes with a Polyimide Backbone with Poly-N-Vinylamides in Selective Solvents. POLYMER SCIENCE SERIES A 2019. [DOI: 10.1134/s0965545x19060075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Magnetic polymer microcapsules: One-step template/surfactant-free preparation and Pt decoration for catalytic reduction of aromatic nitro compounds. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Odrobińska J, Gumieniczek-Chłopek E, Szuwarzyński M, Radziszewska A, Fiejdasz S, Strączek T, Kapusta C, Zapotoczny S. Magnetically Navigated Core-Shell Polymer Capsules as Nanoreactors Loadable at the Oil/Water Interface. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10905-10913. [PMID: 30810298 DOI: 10.1021/acsami.8b22690] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Polymer core-shell nanocapsules with magnetic nanoparticles embedded in their oil cores were fabricated and applied as nano(photo)reactors. Superparamagnetic iron oxide nanoparticles (SPIONs) coated with oleic acid were first synthesized and characterized structurally, and their magnetic properties were determined. The capsules with chitosan-based shells were then formed in a one-step process by sonication-assisted mixing of (1) an aqueous solution of the hydrophobically derived chitosan and (2) oleic acid containing the dispersed SPIONs. In this way, magnetic capsules with a diameter of approximately 500-600 nm containing encapsulated SPIONs with an average diameter of approximately 20-30 nm were formed as revealed by dynamic light scattering and scanning transmission electron microscopy measurements. The composition and magnetic properties of the formed capsules were also followed using dynamic light scattering, electron microscopies, and magnetic force microscopy. The water-dispersible capsules, thanks to their magnetic properties, were then navigated in a static magnetic field gradient and transferred between the water and oil phases, as evidenced by fluorescence microscopy. In this way, the capsules could be loaded in a controlled way with a hydrophobic reactant, perylene, which was later photooxidized upon transferring the capsules to the aqueous phase. The capsules were shown to serve as robust reloadable nanoreactors/nanocontainers that via magnetic navigation can be transferred between immiscible phases without disruption. These features make them promising reusable systems not only for loading and carrying lipophilic actives, conducting useful reactions in the confined environment of the capsules, but also for magnetically separating and guiding the encapsulated active molecules to the site of action.
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Affiliation(s)
- Joanna Odrobińska
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Krakow , Poland
| | | | | | | | | | | | | | - Szczepan Zapotoczny
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Krakow , Poland
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Ibragimova AR, Mirgorodskaya AB, Vasilieva EA, Khairutdinova EI, Meleshko TK, Ivanov IV, Yakimansky AV, Nizameev IR, Kadirov MK, Zakharova LY. Polyelectrolyte nanocapsules with controlled properties fabricated by layer-by-layer deposition of polyethyleneimine and graft-copolyimide with polymethacrylic acid side chains. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.11.065] [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]
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Lepik KV, Muslimov AR, Timin AS, Sergeev VS, Romanyuk DS, Moiseev IS, Popova EV, Radchenko IL, Vilesov AD, Galibin OV, Sukhorukov GB, Afanasyev BV. Mesenchymal Stem Cell Magnetization: Magnetic Multilayer Microcapsule Uptake, Toxicity, Impact on Functional Properties, and Perspectives for Magnetic Delivery. Adv Healthc Mater 2016; 5:3182-3190. [PMID: 27860430 DOI: 10.1002/adhm.201600843] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 09/26/2016] [Indexed: 01/14/2023]
Abstract
Mesenchymal stem cells (MSCs) are widely used in cell therapy due to their convenience, multiline differentiation potential, reproducible protocols, and biological properties. The potential of MSCs to impregnate magnetic microcapsules and their possible influence on cell function and ability to response to magnetic field have been explored. Interestingly, the cells suspended in media show much higher ability in internalization of microcapsules, then MSCs adhere into the surface. There is no significant effect of microcapsules on cell toxicity compared with other cell line-capsule internalization reported in literature. Due to internalization of magnetic capsules by the cells, such cell engineering platform is responsive to external magnetic field, which allows to manipulate MSC migration. Magnetically sorted MSCs are capable to differentiation as confirmed by their conversion to adipogenic and osteogenic cells using standard protocols. There is a minor effect of capsule internalization on cell adhesion, though MSCs are still able to form spheroid made by dozen of thousand MSCs. This work demonstrates the potential of use of microcapsule impregnated MSCs to carry internalized micron-sized vesicles and being navigated with external magnetic signaling.
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Affiliation(s)
- Kirill V. Lepik
- Department of Hematology, Transfusion, and Transplantation; First I. P. Pavlov State Medical University of St. Petersburg; Lev Tolstoy str., 6/8 197022 Saint Petersburg Russian Federation
| | - Albert R. Muslimov
- Department of Hematology, Transfusion, and Transplantation; First I. P. Pavlov State Medical University of St. Petersburg; Lev Tolstoy str., 6/8 197022 Saint Petersburg Russian Federation
| | - Alexander S. Timin
- RASA Center in Tomsk; Tomsk Polytechnic University; pros. Lenina, 30 634050 Tomsk Russian Federation
| | - Vladislav S. Sergeev
- Department of Hematology, Transfusion, and Transplantation; First I. P. Pavlov State Medical University of St. Petersburg; Lev Tolstoy str., 6/8 197022 Saint Petersburg Russian Federation
| | - Dmitry S. Romanyuk
- Department of Hematology, Transfusion, and Transplantation; First I. P. Pavlov State Medical University of St. Petersburg; Lev Tolstoy str., 6/8 197022 Saint Petersburg Russian Federation
| | - Ivan S. Moiseev
- Department of Hematology, Transfusion, and Transplantation; First I. P. Pavlov State Medical University of St. Petersburg; Lev Tolstoy str., 6/8 197022 Saint Petersburg Russian Federation
| | - Elena V. Popova
- RASA Center in St. Petersburg; Peter The Great St. Petersburg Polytechnic University; Polytechnicheskaya, 29 195251 Saint Petersburg Russian Federation
- Institute of Macromolecular Compounds; Russian Academy of Sciences; Birzhevoy proezd str. 6 199004 Saint Petersburg Russian Federation
| | - Igor L. Radchenko
- RASA Center in St. Petersburg; Peter The Great St. Petersburg Polytechnic University; Polytechnicheskaya, 29 195251 Saint Petersburg Russian Federation
| | - Alexander D. Vilesov
- RASA Center in St. Petersburg; Peter The Great St. Petersburg Polytechnic University; Polytechnicheskaya, 29 195251 Saint Petersburg Russian Federation
- Institute of Macromolecular Compounds; Russian Academy of Sciences; Birzhevoy proezd str. 6 199004 Saint Petersburg Russian Federation
| | - Oleg V. Galibin
- Department of Hematology, Transfusion, and Transplantation; First I. P. Pavlov State Medical University of St. Petersburg; Lev Tolstoy str., 6/8 197022 Saint Petersburg Russian Federation
| | - Gleb B. Sukhorukov
- RASA Center in St. Petersburg; Peter The Great St. Petersburg Polytechnic University; Polytechnicheskaya, 29 195251 Saint Petersburg Russian Federation
- School of Engineering and Materials Science; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Boris V. Afanasyev
- Department of Hematology, Transfusion, and Transplantation; First I. P. Pavlov State Medical University of St. Petersburg; Lev Tolstoy str., 6/8 197022 Saint Petersburg Russian Federation
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Liu CW, Qu CY, Han L, Wang DZ, Xiao WB, Hou X. Preparation of carbon fiber-reinforced polyimide composites via in situ induction heating. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008316667789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Induction heating, a direct and contactless heating method, is generally more rapid and energetically more efficient than other heating methods used. In this work, we report the high-temperature imidization of carbon fiber/polyimide (PI) composites using an in situ induction heating method. Furthermore, we compare the advantages of the method to a conventional thermal procedure. The formed composites feature almost identical imidization rates, glass transition temperatures, and thermal oxidative stabilities cured at the same heating temperatures using a different heating process. Upon doping with ferriferous oxide, the ability of the magnetic nanoparticles in an alternating current field was studied to further drive the heating process and increase the rising and cooling time. The in situ induction heating process proves to be a powerful method for the high-temperature polymerization of high-performance thermoplastic composites, particularly for a PI matrix.
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Affiliation(s)
- Chang Wei Liu
- Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin, China
| | - Chun Yan Qu
- Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin, China
- Institute of Advanced Technology, Heilongjiang Academy of Sciences, Harbin, China
| | - Lei Han
- Hongqi Hospital, Mudanjiang Medical University, Jiamusi, China
| | - De Zhi Wang
- Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin, China
- Institute of Advanced Technology, Heilongjiang Academy of Sciences, Harbin, China
| | - Wan Bao Xiao
- Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin, China
- Institute of Advanced Technology, Heilongjiang Academy of Sciences, Harbin, China
| | - Xiang Hou
- Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin, China
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