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Xie J, Zhou G, Sun Y, Zhang F, Kang F, Li B, Zhao Y, Zhang Y, Feng W, Zheng Q. Multifunctional Liquid Metal-Bridged Graphite Nanoplatelets/Aramid Nanofiber Film for Thermal Management. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305163. [PMID: 38048535 DOI: 10.1002/smll.202305163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 11/02/2023] [Indexed: 12/06/2023]
Abstract
Miniaturization of modern micro-electronic devices urges the development of multi-functional thermal management materials. Traditional polymer composite-based thermal management materials are promising candidates, but they suffer from single functionality, high cost, and low fire-resistance. Herein, a multifunctional liquid metal (LM)-bridged graphite nanoplatelets (GNPs)/ aramid nanofibers (ANFs) film is fabricated via a facile vacuum-assisted self-assembly approach followed by compression. ANFs serve as interfacial binders to link LM and GNPs together via hydrogen bondings and π-π interactions, while LM bridges the adjacent layer of GNPs to endow a fast thermal transport by phonons and electrons. The resultant composite films exhibit a high bidirectional thermal conductivity (In-plane: 29.5 W m-1K-1 and through-plane: 5.3 W m-1K-1), offering a reliable and effective cooling. Moreover, the as-fabricated composite films exhibit superior flame-retardance (peak of heat release rate of 4000J g-1), outstanding Joule heating performance (200 °C at supplied voltage of 3.5 V), and excellent electromagnetic interference shielding effectiveness (EMI SE of 62 dB). This work provides an efficient avenue to fabricate multifuntional thermal management materials for micro-electronic devices, battery thermal management, and artificial intelligence.
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Affiliation(s)
- Junwen Xie
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172, P. R. China
| | - Gang Zhou
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Yuxuan Sun
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172, P. R. China
| | - Fei Zhang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172, P. R. China
| | - Feiyu Kang
- Testing Technology Center for Materials and Devices, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, P. R. China
| | - Baohua Li
- Testing Technology Center for Materials and Devices, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, P. R. China
| | - Yun Zhao
- Testing Technology Center for Materials and Devices, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, P. R. China
| | - Yinhang Zhang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
- Rui'an Graduate College of Wenzhou University, Wenzhou, Zhejiang, 325206, P. R. China
| | - Wei Feng
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, P. R. China
| | - Qingbin Zheng
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172, P. R. China
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Alhazime AA. Effect of interchangeable proportions of ZnS and NiO nanoparticles on the optoelectronic and laser CUT-OFF filters properties of CMC/PVP blend. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2023. [DOI: 10.1080/16583655.2023.2192848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Affiliation(s)
- Ali A. Alhazime
- Physics Department, Faculty of Science, Taibah University, Al Madinah Al Munawarah, Saudi Arabia
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El-Kalyoubi S, Khalifa MM, Abo-Elfadl MT, El-Sayed AA, Elkamhawy A, Lee K, Al-Karmalawy AA. Design and synthesis of new spirooxindole candidates and their selenium nanoparticles as potential dual Topo I/II inhibitors, DNA intercalators, and apoptotic inducers. J Enzyme Inhib Med Chem 2023; 38:2242714. [PMID: 37592917 PMCID: PMC10444021 DOI: 10.1080/14756366.2023.2242714] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/15/2023] [Accepted: 07/26/2023] [Indexed: 08/19/2023] Open
Abstract
A new wave of dual Topo I/II inhibitors was designed and synthesised via the hybridisation of spirooxindoles and pyrimidines. In situ selenium nanoparticles (SeNPs) for some derivatives were synthesised. The targets and the SeNP derivatives were examined for their cytotoxicity towards five cancer cell lines. The inhibitory potencies of the best members against Topo I and Topo II were also assayed besides their DNA intercalation abilities. Compound 7d NPs exhibited the best inhibition against Topo I and Topo II enzymes with IC50 of 0.042 and 1.172 μM, respectively. The ability of compound 7d NPs to arrest the cell cycle and induce apoptosis was investigated. It arrested the cell cycle in the A549 cell at the S phase and prompted apoptosis by 41.02% vs. 23.81% in the control. In silico studies were then performed to study the possible binding interactions between the designed members and the target proteins.
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Affiliation(s)
- Samar El-Kalyoubi
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Port Said University, Port Said, Egypt
| | - Mohamed M. Khalifa
- Pharmaceutical Medicinal Chemistry & Drug Design Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
| | - Mahmoud T. Abo-Elfadl
- Biochemistry Department, Biotechnology Research Institute, National Research Centre, Cairo, Egypt
- Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Cairo, Egypt
| | - Ahmed A. El-Sayed
- Photochemistry Department, Chemical Industries Research Institute, National Research Centre, Giza, Egypt
| | - Ahmed Elkamhawy
- College of Pharmacy, BK21 FOUR Team and Integrated Research Institute for Drug Development, Dongguk University—Seoul, Goyang, Republic of Korea
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Kyeong Lee
- College of Pharmacy, BK21 FOUR Team and Integrated Research Institute for Drug Development, Dongguk University—Seoul, Goyang, Republic of Korea
| | - Ahmed A. Al-Karmalawy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 6th of October City, Giza, Egypt
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Huang WJ, Wang J. Development of 3D-Printed, Biodegradable, Conductive PGSA Composites for Nerve Tissue Regeneration. Macromol Biosci 2023; 23:e2200470. [PMID: 36525352 DOI: 10.1002/mabi.202200470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/07/2022] [Indexed: 12/23/2022]
Abstract
Nerve conduits are used to reconnect broken nerve bundles and provide protection to facilitate nerve regeneration. However, the low degradation rate and regeneration rate, as well as the requirement for secondary surgery are some of the most criticized drawbacks of existing nerve conduits. With high processing flexibility from the photo-curability, poly (glycerol sebacate) acrylate (PGSA) is a promising material with tunable mechanical properties and biocompatibility for the development of medical devices. Here, polyvinylpyrrolidone (PVP), silver nanoparticles (AgNPs), and graphene are embedded in biodegradable PGSA matrix. The polymer composites are then assessed for their electrical conductivity, biodegradability, three-dimensional-printability (3D-printability), and promotion of cell proliferation. Through the four-probe technique, it is shown that the PGSA composites are identified as highly conductive in swollen state. Furthermore, biodegradability is evaluated through enzymatic degradation and facilitated hydrolysis. Cell proliferation and guidance are significantly promoted by three-dimensional-printed microstructures and electrical stimulation on PGSA composites, especially on PGSA-PVP. Hence, microstructured nerve conduits are 3D-printed with PGSA-PVP. Guided cell growth and promoted proliferation are subsequently demonstrated by Schwann cell culture combined with electrical stimulation. Consequently, 3D-printed nerve conduits fabricated with PGSA composites hold great potential in nerve tissue regeneration through electrical stimulation.
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Affiliation(s)
- Wei-Jia Huang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, ROC 30013, Taiwan
| | - Jane Wang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, ROC 30013, Taiwan
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Shen X, Li J, Xi S. High Strength Die-Attach Joint Formation by Pressureless Sintering of Organic Amine Modified Ag Nanoparticle Paste. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3351. [PMID: 36234479 PMCID: PMC9565494 DOI: 10.3390/nano12193351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/22/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Sintered silver (Ag) die-attach has attracted much attention in power systems with high power density and high operating temperature. In this paper, we proposed a novel surface modification method for Ag nanoparticles with organic amines as a coating agent for enhancing the pressureless sintering performance. This work systematically introduced the Ag nanoparticle modification process, Ag paste preparation, and sintering process and compared the changes in the sintering performance of Ag nanoparticles after modification with four different alkyl chain lengths of amines. The study showed that the sintered films of Ag nanoparticle pastes modified with n-octylamine (NOA) can achieve the lowest resistivity of the sintered film and the highest shear strength of the bonded joints. The resistivity of the sintered Ag film is affected by the grain size and microscopic morphology, and the strength of the bonded joints is also related to the sintering density and the amount of organic residues. The thermal behavior of the Ag particles coated with different amines is measured by thermal analysis. Finally, the mechanism of NOA-modified Ag nanoparticles to improve the sintering performance is proposed. This study can provide effective data and theoretical support for the further promotion and application of nano-Ag pressureless sintering.
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Affiliation(s)
- Xingwang Shen
- College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518100, China
| | - Junjie Li
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518100, China
| | - Shuang Xi
- College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China
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El-Houssiny AS, Kamel NA, Soliman AAF, El-Messieh SLA, Abd-EL-Nour KN. Preparation and characterisation of gallic acid loaded carboxymethyl chitosan nanoparticles as drug delivery system for cancer treatment. ADVANCES IN NATURAL SCIENCES: NANOSCIENCE AND NANOTECHNOLOGY 2022; 13:025002. [DOI: 10.1088/2043-6262/ac6c22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Gallic acid (GA) is a natural phenolic compound with antioxidant, anti-proliferative, and anticancer effects. However, the potential of GA as an anticancer agent is restricted by its poor absorption, rapid elimination, and low bioavailability. Nanostructure-drug carriers have opened up a new field in cancer therapy by improving the efficacy of drugs. In this work, we developed a nanoformulation of GA in carboxymethyl chitosan (CMC). The particle size, surface charge and molecular structure of the CMC NPs loaded and unloaded with GA were measured using TEM, DLS and FTIR spectroscopy, respectively. The dielectric parameters (permittivity ε′ and dielectric loss ε″) were measured in the frequency range (0.1 Hz–5 MHz) at room temperature. Additionally, the in-vitro anti-cancer effects of the GA, CMC NPs, and GA-CMC NPs were tested against human colon carcinoma (HCT-116), human breast carcinoma (MCF-7), and normal skin fibroblast cells (BJ1) using MTT assay. TEM confirmed that the NPs have a spherical morphology within the size range of 15 nm. DLS studies revealed NPs with a mean diameter of 31.06 nm. The zeta potential results indicated the high suspension stability of the prepared nanoformulation. The FTIR results indicated the interaction between GA and CMC NPs. The dielectric study showed a decrease within the ε″ and conductivity values of GA-CMC NPs which confirmed the successful encapsulation of GA within the CMC NPs. Cytotoxicity studies indicated that the GA-CMC NPs showed specific toxicity towards cancer cells and non-toxicity to normal cells. Overall, these results indicate that the GA-CMC NPs will be an efficient nanocarrier for delivering gallic acid to cancer cells.
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Comparative study of nitrogen doped multi walled carbon nanotubes grafted with carboxy methyl cellulose hybrid composite by inverse gas chromatography and its UV photo detectors application. J Chromatogr A 2022; 1670:462997. [DOI: 10.1016/j.chroma.2022.462997] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 11/16/2022]
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Abdelhamid AE, Ward AA, Khalil AM. Electrical conductivity and thermal stability of surface-modified multiwalled carbon nanotubes/polysulfone/poly( p-phenylenediamine) composites. JOURNAL OF POLYMER ENGINEERING 2022. [DOI: 10.1515/polyeng-2021-0190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Multiwalled carbon nanotubes (MWCNTs) were functionalized with acid then coated with poly(p-phenylenediamine) (PpPD). Various concentrations of modified multiwalled carbon nanotubes (MWCNTs@PpPD) were introduced to a polysulfone (PSU) and poly(p-phenylenediamine) (PpPD) blend providing nanocomposites in form of sheets. Chemical oxidative polymerization was used to polymerize p-phenylenediamine. PpPD is then applied as a compatibilizer in such heterogeneous system to facilitate a successful percolation for MWCNTs in the polymeric matrix as an enhanced conductive filler. The morphological investigations showed homogeneous distribution for MWCNTs in the polymeric matrix. The prepared composites were investigated demonstrating favorable thermal and electrical properties. Thermogravimetric analysis (TGA) emphasized that MWCNTs@PpPD contributed in enhancing the thermal stability of the prepared sheets. The electrical conductivity of PSU/PpPD/MWCNTs@PpPD nanocomposites boosted upon raising the magnitude of loaded MWCNTs. The existence of MWCNTs@PpPD in the polymeric matrix extended the interfacial polarization effects with elevating the conductance. The loaded composite with (7.5 wt%) MWCNTs@PpPD showed the optimum electrical conductivity values. It was then treated with HCl to protonate the amine groups in PpPD showing higher conductivity value than its corresponding untreated one. PpPD and MWCNTs contributed synergistically in modifying the insulation feature of PSU to a favorable electrical conductivity one.
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Affiliation(s)
- Ahmed E. Abdelhamid
- Polymers and Pigments Department , National Research Centre , Dokki 12622 , Giza , Egypt
| | - Azza A. Ward
- Microwave Physics and Dielectrics Department , National Research Centre , Dokki 12622 , Giza , Egypt
| | - Ahmed M. Khalil
- Photochemistry Department , National Research Centre , Dokki 12622 , Giza , Egypt
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Wasim M, Shi F, Liu J, Farooq A, Khan SU, Salam A, Hassan T, Zhao X. An overview of Zn/ZnO modified cellulosic nanocomposites and their potential applications. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02689-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Alsharif NB, Muráth S, Katana B, Szilagyi I. Composite materials based on heteroaggregated particles: Fundamentals and applications. Adv Colloid Interface Sci 2021; 294:102456. [PMID: 34107320 DOI: 10.1016/j.cis.2021.102456] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 01/08/2023]
Abstract
Homoaggregation of dispersed particles, i.e., aggregation of particles of the same shape, charge, size, and composition, is a well-studied field and various theoretical and experimental approaches exist to understand the major phenomena involved in such processes. Besides, heteroaggregation of particles, i.e., aggregation of particles of different shape, charge, size, or composition, has attracted widespread interest due to its relevance in various biomedical, industrial, and environmental systems. For instance, heteroaggregation of plastic contaminant particles with naturally occurring solid materials in waters (e.g., clays, silica and organic polymers) plays an important role in the decontamination technologies. Moreover, nanofabrication processes involving heteroaggregation of particles to prepare novel composite materials are widely implemented in fundamental science and in more applied disciplines. In such procedures, stable particle dispersions are mixed and the desired structure forms owing to the presence of interparticle forces of various origins, which can be tuned by performing appropriate surface functionalization as well as altering the experimental conditions. These composites are widely used in different fields from sensing through catalysis to biomedical delivery. The present review summarizes the recent progresses in the field including new findings regarding the basic principles in particle heteroaggregation, preparation strategies of heteroaggregated structures of different morphology, and the application of the obtained hybrid composites. Such information will be very helpful to those involved in the design of novel composites consisting of different nano or colloidal particles.
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Versatile nanocellulose-based nanohybrids: A promising-new class for active packaging applications. Int J Biol Macromol 2021; 182:1915-1930. [PMID: 34058213 DOI: 10.1016/j.ijbiomac.2021.05.169] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/25/2021] [Accepted: 05/25/2021] [Indexed: 12/20/2022]
Abstract
The food packaging industry is rapidly growing as a consequence of the development of nanotechnology and changing consumers' preferences for food quality and safety. In today's globalization of markets, active packaging has achieved many advantages with the capability to absorb or release substances for prolonging the food shelf life over the traditional one. Therefore, it is critical to developing multifunctional active packaging materials from biodegradable polymers with active agents to decrease environmental challenges. This review article addresses the recent advances in nanocelluloses (NCs)- baseds nanohybrids with new function features in packaging, focusing on the various synthesis methods of NCs-based nanohybrids, and their reinforcing effects as active agents on food packaging properties. The applications of NCs-based nanohybrids as antioxidants, antimicrobial agents, and UV blocker absorbers for prolonging food shelf-life are also reviewed. Overall, these advantages make the CNs-based nanohybrids with versatile properties promising in food and packaging industries, which will impact more readership with concern for future research.
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Im W, Park SY, Goo S, Yook S, Lee HL, Yang G, Youn HJ. Incorporation of CNF with Different Charge Property into PVP Hydrogel and Its Characteristics. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:426. [PMID: 33567602 PMCID: PMC7915088 DOI: 10.3390/nano11020426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/31/2021] [Accepted: 02/05/2021] [Indexed: 01/16/2023]
Abstract
Cellulose nanofibril (CNF)-added polyvinylpyrrolidone (PVP) hydrogels were prepared using different types of CNFs and their properties were investigated. CNFs with different morphology and surface charge properties were prepared through quaternization and carboxymethylation pretreatments. The quaternized CNF exhibited the narrow and uniform width, and higher viscoelastic property compared to untreated and carboxymethylated CNF. When CNF was incorporated to PVP hydrogel, gel contents of all hydrogels were similar, irrespective of CNF addition quantity or CNF type. However, the absorptivity of the hydrogels in a swelling medium increased by adding CNF. In particular, the quaternized CNF-added PVP hydrogel exhibited the highest swelling ability. Unlike that of hydrogels with untreated and carboxymethylated CNFs, the storage modulus of PVP hydrogels after swelling significantly increased with an increase in the content of the quaternized CNF. These indicate that a PVP hydrogel with a high absorptivity and storage modulus can be prepared by incorporating the proper type of CNF.
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Affiliation(s)
- Wanhee Im
- Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea; (W.I.); (H.L.L.)
- R&D Institute, Moorim P&P Co., 3-36 Ubonggangyang-ro, Onsan-eup, Ulju-gun, Ulsan 45011, Korea
| | - Shin Young Park
- Department of Forest Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea;
| | - Sooim Goo
- Department of Agriculture, Forestry and Bioresources, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea; (S.G.); (S.Y.)
| | - Simyub Yook
- Department of Agriculture, Forestry and Bioresources, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea; (S.G.); (S.Y.)
| | - Hak Lae Lee
- Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea; (W.I.); (H.L.L.)
- Department of Agriculture, Forestry and Bioresources, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea; (S.G.); (S.Y.)
- State Key Laboratory of Biobased Material and Green Papermaking (Shandong Academy of Sciences), Qilu University of Technology, 3501 Daxue Rd, Changqing District, Jinan 250353, China;
| | - Guihua Yang
- State Key Laboratory of Biobased Material and Green Papermaking (Shandong Academy of Sciences), Qilu University of Technology, 3501 Daxue Rd, Changqing District, Jinan 250353, China;
| | - Hye Jung Youn
- Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea; (W.I.); (H.L.L.)
- Department of Agriculture, Forestry and Bioresources, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea; (S.G.); (S.Y.)
- State Key Laboratory of Biobased Material and Green Papermaking (Shandong Academy of Sciences), Qilu University of Technology, 3501 Daxue Rd, Changqing District, Jinan 250353, China;
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Pinto RJB, Martins MA, Lucas JMF, Vilela C, Sales AJM, Costa LC, Marques PAAP, Freire CSR. Highly Electroconductive Nanopapers Based on Nanocellulose and Copper Nanowires: A New Generation of Flexible and Sustainable Electrical Materials. ACS APPLIED MATERIALS & INTERFACES 2020; 12:34208-34216. [PMID: 32588615 DOI: 10.1021/acsami.0c09257] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nowadays, the development of sustainable high-performance functional nanomaterials is in the spotlight. In this work, we report the preparation of a new generation of flexible and high electroconductive nanopapers based on nanofibrillated cellulose (NFC) and copper nanowires (CuNWs). Homogeneous red brick color nanopapers (thickness 30.2-36.4 μm) were obtained by mixing different amounts of NFC aqueous suspensions and CuNWs (1, 5, 10, 20, and 50 wt %), followed by vacuum filtration and drying. scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) analysis confirmed the incorporation of the different amounts of CuNWs, and their uniform and random distribution. All of the nanomaterials displayed good mechanical properties, viz., Young's modulus = 2.62-4.72 GPa, tensile strength = 30.2-70.6 MPa, and elongation at break = 2.3-4.1% for the nanopapers with 50 and 1 wt % of CuNWs mass fraction, respectively. The electrical conductivity of these materials strongly depends on the CuNW content, attaining a value of 5.43 × 104 S·m-1 for the nanopaper with a higher mass fraction. This is one of the highest values reported so far for nanocellulose-based conductive materials. Therefore, these nanopapers can be seen as an excellent inexpensive and green alternative to the current electroconductive materials for applications in electronic devices, energy storage, or sensors.
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Affiliation(s)
- Ricardo J B Pinto
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Manuel A Martins
- CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 Aveiro, Portugal
| | - José M F Lucas
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carla Vilela
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Antonio J M Sales
- I3N-Department of Physics, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Luís C Costa
- I3N-Department of Physics, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Paula A A P Marques
- TEMA-Mechanical Engineering Department, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carmen S R Freire
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
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Ewulonu CM, Chukwuneke JL, Nwuzor IC, Achebe CH. Fabrication of cellulose nanofiber/polypyrrole/polyvinylpyrrolidone aerogels with box-Behnken design for optimal electrical conductivity. Carbohydr Polym 2020; 235:116028. [DOI: 10.1016/j.carbpol.2020.116028] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/03/2020] [Accepted: 02/16/2020] [Indexed: 12/27/2022]
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15
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Cellulose from sources to nanocellulose and an overview of synthesis and properties of nanocellulose/zinc oxide nanocomposite materials. Int J Biol Macromol 2020; 154:1050-1073. [PMID: 32201207 DOI: 10.1016/j.ijbiomac.2020.03.163] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/16/2020] [Accepted: 03/16/2020] [Indexed: 01/16/2023]
Abstract
Recently, environmental and ecological concerns are increasing due to the usage of petroleum-based products so the synthesis of ultra-fine chemicals and functional materials from natural resources is drawing a tremendous level of attention. Nanocellulose, a unique and promising natural material extracted from native cellulose, may prove to be most ecofriendly materials that are technically and economically feasible in modern times, minimizing the pollution generation. Nanocellulose has gained tremendous attention for its use in various applications, due to its excellent special surface chemistry, physical properties, and remarkable biological properties (biodegradability, biocompatibility, and non-toxicity). Various types of nanocellulose, viz. cellulose nanofibrils (CNFs), cellulose nanocrystals (CNCs), and bacterial nanocellulose (BNC), are deeply introduced and compared in this work in terms of sources, production, structures and properties. The metal and metal oxides especially zinc oxide nanoparticles (ZnO-NPs) are broadly used in various fields due to the diversity of functional properties such as antimicrobial and ultraviolet (UV) properties. Thus, the advancement of nanocellulose and zinc oxide nanoparticles (ZnO-NPs)-based composites materials are summarized in this article in terms of the preparation methods and remarkable properties with the help of recent knowledge and significant findings (especially from the past six years reports). The nanocellulose materials complement zinc oxide nanoparticles, where they impart their functional properties to the nanoparticle composites. As a result hybrid nanocomposite containing nanocellulose/zinc oxide composite has shown excellent mechanical, UV barrier, and antibacterial properties. The nanocellulose based hybrid nanomaterials have huge potential applications in the area of food packaging, biopharmaceuticals, biomedical, and cosmetics. Thus the functional composite materials containing nanocellulose and zinc oxide will determine the potential biomedical application for nanocellulose.
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Mohan T, Dobaj Štiglic A, Beaumont M, Konnerth J, Gürer F, Makuc D, Maver U, Gradišnik L, Plavec J, Kargl R, Stana Kleinschek K. Generic Method for Designing Self-Standing and Dual Porous 3D Bioscaffolds from Cellulosic Nanomaterials for Tissue Engineering Applications. ACS APPLIED BIO MATERIALS 2020; 3:1197-1209. [DOI: 10.1021/acsabm.9b01099] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tamilselvan Mohan
- Laboratory for Characterisation and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova Ulica 17, 2000 Maribor, Slovenia
| | - Andreja Dobaj Štiglic
- Laboratory for Characterisation and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova Ulica 17, 2000 Maribor, Slovenia
| | - Marco Beaumont
- University of Natural Resources and Life Sciences (BOKU), Institute of Chemistry of Renewable Resources, Konrad-Lorenz-Strasse 24, 3430 Tulln, Austria
| | - Johannes Konnerth
- University of Natural Resources and Life Sciences (BOKU), Department of Material Sciences and Process Engineering, Institute of Wood Technology and Renewable Materials, Konrad-Lorenz-Strasse 24, 3430 Tulln, Austria
| | - Fazilet Gürer
- Laboratory for Characterisation and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova Ulica 17, 2000 Maribor, Slovenia
| | - Damjan Makuc
- National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia
| | - Uroš Maver
- University of Maribor, Faculty of Medicine, Institute of Biomedical Sciences, Taborska Ulica 8, SI-2000 Maribor, Slovenia
| | - Lidija Gradišnik
- University of Maribor, Faculty of Medicine, Institute of Biomedical Sciences, Taborska Ulica 8, SI-2000 Maribor, Slovenia
| | - Janez Plavec
- National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia
| | - Rupert Kargl
- Laboratory for Characterisation and Processing of Polymers, Faculty of Mechanical Engineering, University of Maribor, Smetanova Ulica 17, 2000 Maribor, Slovenia
- Institute of Paper, Pulp and Fibre Technology (IPZ), Graz University of Technology, Inffeldgasse 23, A-8010 Graz, Austria
- Institute of Automation, Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroska Cesta 46, 2000 Maribor, Slovenia
| | - Karin Stana Kleinschek
- Institute of Chemistry and Technology of Biobased System, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
- Institute of Automation, Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroska Cesta 46, 2000 Maribor, Slovenia
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17
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Travalini AP, Lamsal B, Magalhães WLE, Demiate IM. Cassava starch films reinforced with lignocellulose nanofibers from cassava bagasse. Int J Biol Macromol 2019; 139:1151-1161. [DOI: 10.1016/j.ijbiomac.2019.08.115] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 08/10/2019] [Accepted: 08/12/2019] [Indexed: 01/02/2023]
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18
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Hou J, Tang J, Chen J, Zhang Q. Quantitative Structure-Toxicity Relationship analysis of combined toxic effects of lignocellulose-derived inhibitors on bioethanol production. BIORESOURCE TECHNOLOGY 2019; 289:121724. [PMID: 31271911 DOI: 10.1016/j.biortech.2019.121724] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/26/2019] [Accepted: 06/28/2019] [Indexed: 06/09/2023]
Abstract
This study performed a Quantitative Structure-Toxicity Relationship (QSTR) model to evaluate the combined toxicity of lignocellulose-derived inhibitors on bioethanol production. Compared with all the control groups, the combined systems exhibited lower conductivity values, higher oxidation-reduction potential values, as well as maximum inhibition rates. These results indicated that the presence of combined inhibitors had a negative effect on the bioethanol fermentation process. Meanwhile, QSTR model was excellent for evaluating the combined toxic effects at lower ferulic acid concentration (([1:4] × IC50)) and (([1:1] × IC50)), due to higher R2 values (0.994 and 0.762), lower P values (0.000 and 0.023) and relative error values (less than 30%). The obtained results also showed that the combined toxic effects of ferulic acid and representative lignocellulose-derived inhibitors were relevant to different molecular descriptors. Meanwhile, the interactions of combined inhibitors were weaker when ferulic acid was at low concentration ([1:4] × IC50).
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Affiliation(s)
- Jinju Hou
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 200241 Shanghai, China
| | - Jiawen Tang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 200241 Shanghai, China; Institute of Eco-Chongming (IEC), 3663 N. Zhongshan Rd., Shanghai 200062, China
| | - Jinhuan Chen
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 200241 Shanghai, China; Institute of Eco-Chongming (IEC), 3663 N. Zhongshan Rd., Shanghai 200062, China
| | - Qiuzhuo Zhang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 200241 Shanghai, China; Institute of Eco-Chongming (IEC), 3663 N. Zhongshan Rd., Shanghai 200062, China.
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19
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Hydrophobic nano-bamboo fiber-reinforced acrylonitrile butadiene styrene electrospun membrane for the filtration of crude biodiesel. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01140-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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20
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Oun AA, Shankar S, Rhim JW. Multifunctional nanocellulose/metal and metal oxide nanoparticle hybrid nanomaterials. Crit Rev Food Sci Nutr 2019; 60:435-460. [PMID: 31131614 DOI: 10.1080/10408398.2018.1536966] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Nanocellulose materials are derived from cellulose, the most abundant biopolymer on the earth. Nanocellulose have been extensively used in the field of food packaging materials, wastewater treatment, drug delivery, tissue engineering, hydrogels, aerogels, sensors, pharmaceuticals, and electronic sectors due to their unique chemical structure and excellent mechanical properties. On the other hand, metal and metal oxide nanoparticles (NP) such as Ag NP, ZnO NP, CuO NP, and Fe3O4 NP have a variety of functional properties such as UV-barrier, antimicrobial, and magnetic properties. Recently, nanocelluloses materials have been used as a green template for producing metal or metal oxide nanoparticles. As a result, multifunctional nanocellulose/metal or metal oxide hybrid nanomaterials with high antibacterial properties, ultraviolet barrier properties, and mechanical properties were prepared. This review emphasized recent information on the synthesis, properties, and potential applications of multifunctional nanocellulose-based hybrid nanomaterials with metal or metal oxides such as Ag NP, ZnO NP, CuO NP, and Fe3O4 NP. The nanocellulose-based hybrid nanomaterials have huge potential applications in the area of food packaging, biopharmaceuticals, biomedical, and cosmetics.
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Affiliation(s)
- Ahmed A Oun
- Food Engineering and Packaging Department, Food Technology Research Institute, Agricultural Research Center, Giza, Egypt
| | - Shiv Shankar
- Center for Humanities and Sciences, BioNanocomposite Research Center, Department of Food and Nutrition, Kyung Hee University, Seoul, Republic of Korea
| | - Jong-Whan Rhim
- Center for Humanities and Sciences, BioNanocomposite Research Center, Department of Food and Nutrition, Kyung Hee University, Seoul, Republic of Korea
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21
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Mo L, Guo Z, Yang L, Zhang Q, Fang Y, Xin Z, Chen Z, Hu K, Han L, Li L. Silver Nanoparticles Based Ink with Moderate Sintering in Flexible and Printed Electronics. Int J Mol Sci 2019; 20:E2124. [PMID: 31036787 PMCID: PMC6539082 DOI: 10.3390/ijms20092124] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 03/27/2019] [Accepted: 04/07/2019] [Indexed: 12/28/2022] Open
Abstract
Printed electronics on flexible substrates has attracted tremendous research interest research thanks its low cost, large area production capability and environmentally friendly advantages. Optimal characteristics of silver nanoparticles (Ag NPs) based inks are crucial for ink rheology, printing, post-print treatment, and performance of the printed electronics devices. In this review, the methods and mechanisms for obtaining Ag NPs based inks that are highly conductive under moderate sintering conditions are summarized. These characteristics are particularly important when printed on temperature sensitive substrates that cannot withstand sintering of high temperature. Strategies to tailor the protective agents capping on the surface of Ag NPs, in order to optimize the sizes and shapes of Ag NPs as well as to modify the substrate surface, are presented. Different (emerging) sintering technologies are also discussed, including photonic sintering, electrical sintering, plasma sintering, microwave sintering, etc. Finally, applications of the Ag NPs based ink in transparent conductive film (TCF), thin film transistor (TFT), biosensor, radio frequency identification (RFID) antenna, stretchable electronics and their perspectives on flexible and printed electronics are presented.
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Affiliation(s)
- Lixin Mo
- Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
| | - Zhenxin Guo
- Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
| | - Li Yang
- Research Institutes of Sweden (RISE), RISE Bioeconomy, Drottning Kristinas väg 61, 11428 Stockholm, Sweden.
| | - Qingqing Zhang
- Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
| | - Yi Fang
- Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
| | - Zhiqing Xin
- Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
| | - Zheng Chen
- Shine Optoelectronics (Kunshan) Co., Ltd., Shenzhou Industrial Park, No. 33 Yuanfeng Rd, Kunshan 215300, China.
| | - Kun Hu
- Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
| | - Lu Han
- Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
| | - Luhai Li
- Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
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22
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Abomostafa HM, El komy GM. Enhancement of Structural, Dielectric and Mechanical Properties of Ps: Fe Doped ZnO Based Polymer Nanocomposites. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-018-01065-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Julinová M, Vaňharová L, Jurča M. Water-soluble polymeric xenobiotics - Polyvinyl alcohol and polyvinylpyrrolidon - And potential solutions to environmental issues: A brief review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 228:213-222. [PMID: 30223180 DOI: 10.1016/j.jenvman.2018.09.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 08/17/2018] [Accepted: 09/02/2018] [Indexed: 05/27/2023]
Abstract
This paper describes a potential environmental problem closely linked with the global production of water-soluble polymers such as polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP). Both polymers make up the components of a multitude of products commonly utilized by industries and households. Hence, such a widespread use of PVA and PVP in the industrial sector and among consumers (the concentration of PVP in urban wastewater is approximately 7 mg/L) could pose a considerable problem, particularly to the environment. To this end, many publications have recently highlighted the poor biodegradability of PVA, in principle influenced by numerous biotic and abiotic factors. Facts published on the environmental fate of PVP have been scant, basically reporting that it is a biologically resistant polymer. As a result, the commercially produced water-soluble polymers of PVA and PVP are essentially non-biodegradable and possess the capacity to accumulate in virtually all environmental media. Consequently, there is a chance of heightened risk to the very environmental constituents in which PVA and PVP accumulate, depending on the routes of entry and transformation processes underway in such constituents of the ecosystem. This assumption is confirmed by the findings of initial research, which is worrying. Herein, PVA was detected in a soil environment, while a relatively high concentration of PVP was found in river water. A review of the literature was conducted to summarize the current state of knowledge concerning the fate of PVA and PVP in various environments, thereby also discerning potential solutions to tackle such dangers. This paper proposes methods to enhance the biodegradability of materials containing such materials; for PVA this means utilizing a suitable polysaccharide, whereas for PVP this pertains to actuating applications that induce substances to degrade. Accordingly, while it is understandable that this work cannot fully address all the issues associated with polymeric xenobiotics, it can still serve as a guide to discerning an economically viable solution, and provide a foundation for further research.
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Affiliation(s)
- Markéta Julinová
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic.
| | - Ludmila Vaňharová
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
| | - Martin Jurča
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
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24
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Recent advance in antibacterial activity of nanoparticles contained polyurethane. J Appl Polym Sci 2018. [DOI: 10.1002/app.46997] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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25
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Ianesko F, Alves de Lima C, Antoniazzi C, Santana ER, Piovesan JV, Spinelli A, Galli A, Guimarães de Castro E. Simultaneous Electrochemical Determination of Hydroquinone and Bisphenol A using a Carbon Paste Electrode Modified with Silver Nanoparticles. ELECTROANAL 2018. [DOI: 10.1002/elan.201800074] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Felipe Ianesko
- Universidade Estadual do Centro-Oeste; Campus CEDETEG, Departamento de Química; 85040-080 - Guarapuava, PR Brazil
| | - Camila Alves de Lima
- Universidade Estadual do Centro-Oeste; Campus CEDETEG, Departamento de Química; 85040-080 - Guarapuava, PR Brazil
| | - Cristiane Antoniazzi
- Universidade Estadual do Centro-Oeste; Campus CEDETEG, Departamento de Química; 85040-080 - Guarapuava, PR Brazil
| | - Edson Roberto Santana
- Universidade Federal de Santa Catarina; Campus Reitor João David Ferreira Lima, Departamento de Química - CFM; 88040-900 - Florianópolis, SC Brazil
| | - Jamille Valéria Piovesan
- Universidade Federal de Santa Catarina; Campus Reitor João David Ferreira Lima, Departamento de Química - CFM; 88040-900 - Florianópolis, SC Brazil
| | - Almir Spinelli
- Universidade Federal de Santa Catarina; Campus Reitor João David Ferreira Lima, Departamento de Química - CFM; 88040-900 - Florianópolis, SC Brazil
| | - Andressa Galli
- Universidade Estadual do Centro-Oeste; Campus CEDETEG, Departamento de Química; 85040-080 - Guarapuava, PR Brazil
| | - Eryza Guimarães de Castro
- Universidade Estadual do Centro-Oeste; Campus CEDETEG, Departamento de Química; 85040-080 - Guarapuava, PR Brazil
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Searching for Natural Conductive Fibrous Structures via a Green Sustainable Approach Based on Jute Fibers and Silver Nanoparticles. Polymers (Basel) 2018; 10:polym10010063. [PMID: 30966097 PMCID: PMC6414823 DOI: 10.3390/polym10010063] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/08/2018] [Accepted: 01/09/2018] [Indexed: 11/17/2022] Open
Abstract
This paper provides new insights regarding jute fibers functionalization with silver nanoparticles (Ag NPs) with improved conductivity values and highlights the sustainability of the processes involved. These NPs were applied onto jute fabrics by two different sustainable methods: ultraviolet (UV) photoreduction and by using polyethylene glycol (PEG) as a reducing agent and stabilizer. Field Emission Scanning Electron Microscopy (FESEM) images demonstrated that the Ag NPs were incorporated on the jute fibers surface by the two different approaches, with sizes ranging from 70 to 100 nm. Diffuse reflectance spectra revealed the plasmon absorption band, corresponding to the formation of metallic Ag NPs, in all samples under study. Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR) was used to characterize the obtained samples, demonstrating NPs adsorption to the surface of the fibers. The resistivity value obtained by the two-point probe method of the jute fabric without functionalization is about 1.5 × 107 Ω·m, whereas, after NPs functionalization, it decreased almost 15,000 times, reaching a value of 1.0 × 103 Ω·m. Further research work is being undertaken for improving these values, however, 1000 Ω·m of resistivity (conductivity = 0.001 S/m) is already a very reasonable value when compared with those obtained with other developed systems based on natural fibers. In summary, this work shows that the use of very simple methodologies enabled the functionalization of jute fibers with reasonable values of conductivity. This achievement has a huge potential for use in smart textile composites.
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27
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Ma Y, Liu C, Qu D, Chen Y, Huang M, Liu Y. Antibacterial evaluation of sliver nanoparticles synthesized by polysaccharides from Astragalus membranaceus roots. Biomed Pharmacother 2017; 89:351-357. [DOI: 10.1016/j.biopha.2017.02.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/12/2017] [Accepted: 02/07/2017] [Indexed: 01/03/2023] Open
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