1
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El-Taweel SH, Hassan SS, Ismail KM. Eco-friendly zinc-metal-organic framework as a nucleating agent for poly (lactic acid). Int J Biol Macromol 2024; 271:132691. [PMID: 38810857 DOI: 10.1016/j.ijbiomac.2024.132691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 05/13/2024] [Accepted: 05/25/2024] [Indexed: 05/31/2024]
Abstract
Eco-friendly poly(L-lactic acid) (PLA) can be made more versatile, and its crystallization rate is accelerated by adding Zinc-based metal-organic framework (Zn-MOF) particles. Using differential scanning calorimetry (DSC), the non-isothermal melt crystallization behavior of biodegradable PLA nucleated by 0.3 to 3 wt% of Zn-MOF was examined. The non-isothermal melt crystallization kinetics parameters were determined using a modified Avrami model and Mo approach. Zn-MOF dramatically accelerated the crystallization process, as evidenced by several non-isothermal crystallization metrics, including the crystallization half-time and crystallization rate constant. The melt crystallization temperatures of the PLA-Zn-MOF composites, with contents of 0.7 and 1 wt%, were increased by 21 °C compared to the neat PLA. Using the Friedman isoconversional kinetic method, the neat PLA and PLA-Zn-MOF composites' effective activation energy values, ∆E, were determined. The ∆E values of PLA-Zn-MOF from 0.3 to 1 wt% Zn-MOF composites were lower than that of neat PLA. Moreover, polarized optical microscopy revealed the formation of numerous small-sized PLA spherulites upon Zn-MOF addition. The results indicate that the Zn-MOF (at concentrations of 0.7 to 1.0 wt%) can be used as an efficient nucleating agent for PLA, where it increases the melt crystallization temperature, nucleation density, and crystallinity without changing the crystalline structure, while also significantly reduces the effective activation energy and the size of spherulites. Additionally, scanning electron microscopy confirms good dispersion of Zn-MOF (0.3 to 1 wt%) within the PLA matrix.
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Affiliation(s)
- Safaa H El-Taweel
- Chemistry Department, Faculty of Science, Cairo University, Orman, Giza 12613, Egypt; Engineering and Materials Science Department, German University in Cairo, New Cairo City, Egypt.
| | - Safaa S Hassan
- Chemistry Department, Faculty of Science, Cairo University, Orman, Giza 12613, Egypt
| | - Khaled M Ismail
- Chemistry Department, Faculty of Science, Cairo University, Orman, Giza 12613, Egypt
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2
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Gisbert Roca F, Martínez-Ramos C, Ivashchenko S, García-Bernabé A, Compañ V, Monleón Pradas M. Polylactic Acid Nanofiber Membranes Grafted with Carbon Nanotubes with Enhanced Mechanical and Electrical Properties. ACS APPLIED POLYMER MATERIALS 2023; 5:6081-6094. [PMID: 38344007 PMCID: PMC10852358 DOI: 10.1021/acsapm.3c00776] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/04/2023] [Indexed: 03/21/2024]
Abstract
Electroconductive materials based on poly(lactic acid) (PLA) electrospinning membranes grafted with carbon nanotubes (CNTs) functionalized with the carboxylic group R-COOH have been obtained. PLA electrospun membranes were modified with sulfuric acid (H2SO4) to oxidize its surface to subsequently graft the CNTs, the treatment time and drying of the membranes before grafting with CNTs being critical, influencing the final properties of the materials. SEM images showed that CNTs presented a uniform distribution on the surface of the PLA nanofibers, while FTIR spectra of PLA-CNTs materials revealed characteristic hydroxyl groups, as evidenced by absorption peaks of CNTs. Thanks to the grafting with CNTs, the resulting PLA-CNTs membranes present an improvement of the mechanical and conductive properties when compared with PLA membranes. On the one hand, grafting with CNTs causes the nanofibers to have greater rigidity, so they are more manipulable and can more easily preserve their conformation when stress is exerted. On the other hand, grafting with CNTs allows elimination of the insulating barrier of the PLA, reducing the resistivity and providing high electrical conductivity to the PLA-CNTs membranes. The incorporation of CNTs into PLA electrospun membranes is expected to offer greater functionalities to electrospun composite nanofibers for medical and industrial applications.
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Affiliation(s)
- Fernando Gisbert Roca
- Center
for Biomaterials and Tissue Engineering. Universitat Politècnica de València. Camino de Vera s/n, Valencia 46022, Spain
| | - Cristina Martínez-Ramos
- Center
for Biomaterials and Tissue Engineering. Universitat Politècnica de València. Camino de Vera s/n, Valencia 46022, Spain
- Unitat
Predepartamental de Medicina, Universitat
Jaume I, 12071 Castellón de la Plana, Spain
| | - Sergiy Ivashchenko
- Center
for Biomaterials and Tissue Engineering. Universitat Politècnica de València. Camino de Vera s/n, Valencia 46022, Spain
| | - Abel García-Bernabé
- Departamento
de Termodinámica Aplicada. Universitat
Politècnica de València. Camino de Vera s/n, Valencia 46022, Spain
| | - Vicente Compañ
- Departamento
de Termodinámica Aplicada. Universitat
Politècnica de València. Camino de Vera s/n, Valencia 46022, Spain
| | - Manuel Monleón Pradas
- Center
for Biomaterials and Tissue Engineering. Universitat Politècnica de València. Camino de Vera s/n, Valencia 46022, Spain
- CIBER-BBN.
Biomedical Research Networking Center in Bioengineering Biomaterials
and Nanomedicine. Madrid 28029, Spain
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3
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Wang G, Zhang L, Chi X. Ductile poly(lactic acid)-based blends derived from poly(butylene succinate-co-butylene 2,5-thiophenedicarboxylate): Structures and properties. Int J Biol Macromol 2023; 234:123702. [PMID: 36801293 DOI: 10.1016/j.ijbiomac.2023.123702] [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: 12/11/2022] [Revised: 02/04/2023] [Accepted: 02/11/2023] [Indexed: 02/18/2023]
Abstract
Because of superior tensile strength, biodegradability, and biocompatibility, poly(lactic acid) (PLA) has emerged as one among the growth-oriented biodegradable materials. But it has been limited to some extent in practical applications due to poor ductility. Consequently, in order to improve the drawback of poor ductility of PLA, ductile blends were obtained by melt-blending of poly(butylene succinate-co-butylene 2,5-thiophenedicarboxylate) (PBSTF25) with PLA. PBSTF25 has a good improvement on the ductility of PLA due to its excellent toughness. Differential scanning calorimetry (DSC) showed that PBSTF25 promoted the cold crystallization of PLA. Wide-angle X-ray diffraction (XRD) results revealed that PBSTF25 experienced stretch-induced crystallization throughout the stretching procedure. Scanning electron microscopy (SEM) showed neat PLA had a smooth fracture surface, but the blends had rough fracture surface. PBSTF25 can improve the ductility and processing properties of PLA. When the addition of PBSTF25 reached 20 wt%, tensile strength was 42.5 MPa and elongation at break increased to 156.6 %, approximately 19 times as much as PLA. The toughening effect of PBSTF25 was better than that of poly(butylene succinate).
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Affiliation(s)
- Guoqiang Wang
- College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, China.
| | - Li Zhang
- College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
| | - Xiang Chi
- College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
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4
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Multilayered Composites with Carbon Nanotubes for Electromagnetic Shielding Application. Polymers (Basel) 2023; 15:polym15041053. [PMID: 36850335 PMCID: PMC9963311 DOI: 10.3390/polym15041053] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/20/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023] Open
Abstract
Bulk polylactic acid (PLA)/multiwall carbon nanotube (MWCNT) composites were prepared and investigated in wide frequency ranges (20 Hz-1 MHz and 24-40 GHz). It was determined that the percolation threshold in bulk PLA/MWCNT composites is close to 0.2 vol.% MWCNT. However, the best microwave dielectric properties and absorption were observed in composites with 3.0-5.0 vol.% MWCNT. Therefore, for future investigations, we selected layered (laminate) polymeric structures with gradual changes in MWCNT concentration from 0.2 to 8.0 vol.% MWCNT. Two approaches to laminate structure designs were examined and compared: a five-layer composite and a nine-layer composite that included four pure PLA middle layers. The addition of MWCNT enhanced the elastic modulus by up to 1.4-fold and tensile strength by up to 1.2-fold, with the best performance achieved at 5.0 vol.% loading. High microwave shielding was observed for these layered PLA/MWCNT structures with a gradient change in MWCNT concentration (up to 26 dB in both transmission and absorption coefficients) in the broad frequency range (from 24 to 40 GHz). Obtained structures are highly anisotropic, and the absorption coefficient is 2-5 dB higher in the direction of MWCNT concentration increase; however, the transmission coefficient is the same in both directions. The properties of microwave absorption are mainly unaffected by the additional polymeric layers. The absorption of the layered structure is greater than the absorption of single-layer composites with an optimal MWCNT concentration of the same thickness. The proposed laminate structure design is promising in the field of efficient electromagnetic shielding.
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5
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Czechowski L, Kedziora S, Museyibov E, Schlienz M, Szatkowski P, Szatkowska M, Gralewski J. Influence of UV Ageing on Properties of Printed PLA Containing Graphene Nanopowder. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15228135. [PMID: 36431621 PMCID: PMC9699029 DOI: 10.3390/ma15228135] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/07/2022] [Accepted: 11/14/2022] [Indexed: 05/27/2023]
Abstract
The present paper analyses the properties of printed polylactic acid (PLA) samples with admixtures of graphene nanopowder (GNP) at wt. 1%, 2% and 4%. The pure polylactide and admixed polylactide printed samples were examined to determine their chemical-physical properties, stiffness, and strength parameters. The tests of tensile, dynamic mechanical analysis (DMA), difference thermogravimetric (TG), and differential scanning calorimetry (DSC) were executed before and after UV (ultraviolet) treatment. The first part of the paper shows the process of manufacturing granulates and filaments mixed with graphene. The second part of the paper concerns the results of the tests made on printed samples. The analysed samples were printed using a Prusa i3 MK3 printer. It transpired that the content of graphene at 1% improved the mechanical parameters of the printed composite by organising its structure. Increasing the amount of graphene caused the values of the measured parameters to drop. This research indicates how important it is to determine the optimal values of nanoadditives in biopolymers.
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Affiliation(s)
- Leszek Czechowski
- Department of Strength of Materials, Lodz University of Technology, 90-537 Lodz, Poland
- Faculty of Science, Technology and Medicine, Luxembourg University, L-1359 Luxembourg, Luxembourg
| | - Slawomir Kedziora
- Faculty of Science, Technology and Medicine, Luxembourg University, L-1359 Luxembourg, Luxembourg
| | - Elvin Museyibov
- Faculty of Science, Technology and Medicine, Luxembourg University, L-1359 Luxembourg, Luxembourg
| | - Markus Schlienz
- Faculty of Science, Technology and Medicine, Luxembourg University, L-1359 Luxembourg, Luxembourg
| | - Piotr Szatkowski
- Faculty of Materials Science and Ceramics, University of Science and Technology, 30-059 Krakow, Poland
| | - Martyna Szatkowska
- Faculty of Materials Science and Ceramics, University of Science and Technology, 30-059 Krakow, Poland
| | - Jacek Gralewski
- Institute of Marketing and Sustainable Development, Lodz University of Technology, 93-590 Lodz, Poland
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6
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Recent advances in surface modification of plasma electrolytic oxidation coatings treated by non-biodegradable polymers. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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7
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Motloung MP, Mofokeng TG, Ojijo V, Ray SS. A review on the processing–morphology–property relationship in biodegradable polymer composites containing carbon nanotubes and nanofibers. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25798] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mpho Phillip Motloung
- Centre for Nanostructures and Advanced Materials, DSI‐CSIR Nanotechnology Innovation Centre Council for Scientific and Industrial Research Pretoria South Africa
- Department of Chemical Sciences University of Johannesburg Johannesburg South Africa
| | - Tladi Gideon Mofokeng
- Centre for Nanostructures and Advanced Materials, DSI‐CSIR Nanotechnology Innovation Centre Council for Scientific and Industrial Research Pretoria South Africa
| | - Vincent Ojijo
- Centre for Nanostructures and Advanced Materials, DSI‐CSIR Nanotechnology Innovation Centre Council for Scientific and Industrial Research Pretoria South Africa
| | - Suprakas Sinha Ray
- Centre for Nanostructures and Advanced Materials, DSI‐CSIR Nanotechnology Innovation Centre Council for Scientific and Industrial Research Pretoria South Africa
- Department of Chemical Sciences University of Johannesburg Johannesburg South Africa
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8
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Szatkowski P, Czechowski L, Gralewski J, Szatkowska M. Mechanical Properties of Polylactide Admixed with Carbon Nanotubes or Graphene Nanopowder. MATERIALS 2021; 14:ma14205955. [PMID: 34683547 PMCID: PMC8539563 DOI: 10.3390/ma14205955] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 01/15/2023]
Abstract
The aim of this work was to verify the material properties of polylactic acid (PLA) with an addition of carbon nanotubes (CNTs) or graphene nanopowder (GNP). The pure polylactide and admixed polylactide samples were subjected to chemical-physical tests to determine their stiffness and strength parameters. The tensile and impact tests were performed on samples without UV (ultraviolet) treatment and after UV treatment, in a physiological saline solution. The investigations were composed of two stages. The first one was related to the examination of the properties of pure polylactide, denoted as the following: 3001D, 4032D, and 4043D. The second stage was based on an analysis of the properties of PLA 4032D with an admixture of GNP or CNTs, at 0.1 wt.% and 0.5 wt.%. By comparing the strength and the stiffness of pure samples with samples with the considered admixtures, an essential increase was not observed. However, it is stated that the presence of GNP and CNTs in the samples positively influenced the resistance of the materials to the ageing process.
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Affiliation(s)
- Piotr Szatkowski
- Faculty of Materials Science and Ceramics, University of Science and Technology, 30-059 Krakow, Poland; (P.S.); (M.S.)
| | - Leszek Czechowski
- Department of Strength of Materials, Lodz University of Technology, 90-924 Lodz, Poland
- Correspondence: ; Tel.: +48-42-631-22-15
| | - Jacek Gralewski
- Institute of Social Sciences and Management of Technologies, Lodz University of Technology, 90-924 Lodz, Poland;
| | - Martyna Szatkowska
- Faculty of Materials Science and Ceramics, University of Science and Technology, 30-059 Krakow, Poland; (P.S.); (M.S.)
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9
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He J, Yu T, Chen S, Li Y. Soil degradation behavior of ramie/thermoset poly(lactic acid) composites. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02715-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Kaseem M, Ur Rehman Z, Hossain S, Singh AK, Dikici B. A Review on Synthesis, Properties, and Applications of Polylactic Acid/Silica Composites. Polymers (Basel) 2021; 13:polym13183036. [PMID: 34577936 PMCID: PMC8467350 DOI: 10.3390/polym13183036] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/06/2021] [Accepted: 09/07/2021] [Indexed: 11/23/2022] Open
Abstract
Polylactic acid (PLA)/silica composites as multifunctional high-performance materials have been extensively examined in the past few years by virtue of their outstanding properties relative to neat PLA. The fabrication methods, such as melt-mixing, sol–gel, and in situ polymerization, as well as the surface functionalization of silica, used to improve the dispersion of silica in the polymer matrix are outlined. The rheological, thermal, mechanical, and biodegradation properties of PLA/silica nanocomposites are highlighted. The potential applications arising from the addition of silica nanoparticles into the PLA matrix are also described. Finally, we believe that a better understanding of the role of silica additive with current improvement strategies in the dispersion of this additive in the polymer matrix is the key for successful utilization of PLA/silica nanocomposites and to maximize their fit with industrial applications needs.
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Affiliation(s)
- Mosab Kaseem
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Korea
- Correspondence: (M.K.); (B.D.)
| | - Zeeshan Ur Rehman
- School of Materials Science & Engineering, Changwon National University, Changwon 641-773, Korea;
| | - Shakhawat Hossain
- Department of Industrial and Production Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh;
| | - Ashish Kumar Singh
- Department of Applied Sciences, Bharati Vidyapeeth’s College of Engineering, New Delhi 110063, India;
| | - Burak Dikici
- Department of Metallurgical and Materials Engineering, Ataturk University, Erzurum 25240, Turkey
- Correspondence: (M.K.); (B.D.)
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11
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Nguyen VP, Yoo J, Lee JY, Chung JJ, Hwang JH, Jung Y, Lee SM. Enhanced Mechanical Stability and Biodegradability of Ti-Infiltrated Polylactide. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43501-43512. [PMID: 32893625 DOI: 10.1021/acsami.0c13246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Biodegradable polymers have been often used in place of conventional nondegradable polymers for industrial and medical applications. In particular, polylactide (PLA) has been regarded as a popular ecofriendly plastic and has many advantages like good biocompatibility and processability. Yet, it still has some drawbacks in mechanical properties. Here, we prepared Ti-infiltrated PLA by mimicking the gelatinous jaw of a seaworm whose mechanical properties are toggled up and down by the tiny amount of metal ions, expecting to prepare a new type of alternative. Ti induced significant chemical and microstructural changes in the PLA, which led to a notable improvement in the mechanical properties as compared to the neat PLA. The Ti-infiltrated PLA exhibited high resistance to rapid degradation. More importantly, the toxicity assessment demonstrated that the resulting PLA is still biocompatible and nontoxic. Consequently, we proved that the Ti-infiltrated PLA has high mechanical properties comparable to conventional nondegradable polymers and good biocompatibility as well as delayed biodegradability. We anticipate the current Ti-infiltrated PLA to be an ecofriendly replacement of some conventional plastics, which helps preserve a green environment.
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Affiliation(s)
- Viet Phuong Nguyen
- Nanomechatronics, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Department of Nanomechanics, Korea Institute of Machinery and Materials (KIMM), Daejeon 34103, Republic of Korea
| | - Jin Yoo
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Ju Young Lee
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology (KIT), Jeongeup 53212, Jeollabuk-do, Republic of Korea
- Division of Human and Environmental toxicology, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Justin J Chung
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Jeong Ho Hwang
- Animal Model Research Group, Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology (KIT), Jeongeup 53212, Jeollabuk-do, Republic of Korea
| | - Youngmee Jung
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Seung-Mo Lee
- Nanomechatronics, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Department of Nanomechanics, Korea Institute of Machinery and Materials (KIMM), Daejeon 34103, Republic of Korea
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12
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Gan L, Geng A, Wu Y, Wang L, Fang X, Xu L, Mei C. Antibacterial, Flexible, and Conductive Membrane Based on MWCNTs/Ag Coated Electro-Spun PLA Nanofibrous Scaffolds as Wearable Fabric for Body Motion Sensing. Polymers (Basel) 2020; 12:E120. [PMID: 31948041 PMCID: PMC7022570 DOI: 10.3390/polym12010120] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/12/2019] [Accepted: 12/16/2019] [Indexed: 11/17/2022] Open
Abstract
In the present study, flexible and conductive nanofiber membranes were prepared by coating PLA nanofibrous scaffolds with carbon nanotubes and silver nanoparticles. The morphology and structure of the prepared membrane was characterized, as well as its mechanical properties, electrical sensing behavior during consecutive stretching-releasing cycles and human motion detecting performance. Furthermore, the antibacterial properties of the membrane was also investigated. Due to the synergistic and interconnected three-dimensional (3D) conductive networks, formed by carbon nanotubes and silver nanoparticles, the membrane exhibited repeatable and durable strain-dependent sensitivity. Further, the prepared membrane could accurately detect the motions of different body parts. Accompanied with promising antibacterial properties and washing fastness, the prepared flexible and conductive membrane provides great application potential as a wearable fabric for real-time body motion sensing.
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Affiliation(s)
- Lu Gan
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.G.); (A.G.); (Y.W.); (L.W.); (X.F.)
| | - Aobo Geng
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.G.); (A.G.); (Y.W.); (L.W.); (X.F.)
| | - Ying Wu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.G.); (A.G.); (Y.W.); (L.W.); (X.F.)
| | - Linjie Wang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.G.); (A.G.); (Y.W.); (L.W.); (X.F.)
| | - Xingyu Fang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.G.); (A.G.); (Y.W.); (L.W.); (X.F.)
| | - Lijie Xu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China;
| | - Changtong Mei
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (L.G.); (A.G.); (Y.W.); (L.W.); (X.F.)
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13
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Tabatabaeian A, Ghasemi AR. The impact of MWCNT modification on the structural performance of polymeric composite profiles. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-019-03088-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Kaseem M, Hamad K, Ur Rehman Z. Review of Recent Advances in Polylactic Acid/TiO 2 Composites. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E3659. [PMID: 31703262 PMCID: PMC6888381 DOI: 10.3390/ma12223659] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/05/2019] [Accepted: 11/06/2019] [Indexed: 01/28/2023]
Abstract
Polylactic acid/titanium oxide (PLA/TiO2) composites as multifunctional materials have been studied extensively by couple of research groups owing to their outstanding mechanical, thermal, photocatalytic, and antimicrobial properties. This review describes the experimental approaches used to improve the compatibility of PLA/TiO2 composites. The mechanical, thermal, photocatalytic, and antimicrobial properties of PLA/TiO2 composites are discussed. The potential applications arising from the structural and functional properties of PLA/TiO2 composites were also reviewed. Finally, it is concluded that a deep understanding of the impacts of TiO2 filler with available improvement approaches in the dispersibility of this filler in the PLA matrix would be the key for the effective usage of PLA/TiO2 composites and to expand their suitability with worldwide application requirements.
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Affiliation(s)
- Mosab Kaseem
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Korea
| | - Kotiba Hamad
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea;
| | - Zeeshan Ur Rehman
- Department of Materials Science and Engineering, Hongik University, Sejong, Jochiwon, Sejong-ro 2639, Korea;
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15
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Poly(Lactic Acid) Composites. MATERIALS 2019; 12:ma12213586. [PMID: 31683618 PMCID: PMC6862024 DOI: 10.3390/ma12213586] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 10/18/2019] [Accepted: 10/30/2019] [Indexed: 12/02/2022]
Abstract
Polylactic acid-based materials have gained great interest within the scientific community due to their biodegradability, good performance, and suitability for a number of applications. Therefore, this Special Issue “Poly(lactic acid) Composites” is proposed to cover the important advances in poly (lactic acid) composites, ranging from their design, fabrication, and material properties to the potential applications of these materials. Therefore, we believe that the present Issue can convey beneficial information to scientists and engineers in numerous fields, including polymer science and biomedical engineering.
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16
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Nikfar N, Izadi-Vasafi H, Goudarzi L. Assessment of the Microstructure and Mechanical Properties of Polycarbonate (PC)/Acrylonitrile Butadiene Rubber (NBR) Blends Reinforced with Multi-wall Carbon Nanotubes. J MACROMOL SCI B 2019. [DOI: 10.1080/00222348.2019.1593600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Nafiseh Nikfar
- Department of Chemistry, Shahreza Branch, Islamic Azad University, Shahreza, Iran
| | - Hossein Izadi-Vasafi
- Department of Polymer Engineering, Shahreza Branch, Islamic Azad University, Shahreza, Iran
| | - Leyla Goudarzi
- Department of Chemistry, Shahreza Branch, Islamic Azad University, Shahreza, Iran
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Mao H, Ye X, Chen W, Geng W, Chen G. Fabrication of carbon nanotube-polylactic acid composite electrode by melt compounding for capillary electrophoretic determination of tectoridin and irigenin in Belamcandae Rhizoma. J Pharm Biomed Anal 2019; 175:112769. [PMID: 31398628 DOI: 10.1016/j.jpba.2019.07.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/06/2019] [Accepted: 07/08/2019] [Indexed: 01/01/2023]
Abstract
A sensitive detection electrode based on the composite of carbon nanotubes (CNTs) and polylactic acid (PLA) was fabricated for measuring the bioactive constituents in Belamcandae Rhizoma by capillary electrophoresis (CE). The composite was facilely fabricated by packing a blend of CNTs and melted PLA into a fused silica capillary under heat. The prepared CNT-PLA composite was characterized by scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy and cyclic voltammetry. The results indicated that PLA bound electrically conductive CNTs to form a well-dispersed composite network for electrochemical sensing. The electrode was employed to the off-line detection of tectoridin and irigenin in Belamcandae Rhizoma to demonstrate its performance in capillary electrophoresis. At a separation voltage of 12 kV, the two isoflavones were well separated and detected within 8 min in a 40-cm fused silica capillary in a borate buffer at pH 9.8. The detection limits for tectoridin and irigenin were measured to be 0.24 and 0.21 μM, respectively.
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Affiliation(s)
- Hua Mao
- Fudan University, Affiliated Pudong Medical Center & Pharmaceutical Analysis Department, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Xinming Ye
- School of Sports Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Weilong Chen
- Phenom Scientific Instrument (Shanghai) Co., Ltd., Shanghai, 201203, China
| | - Wenye Geng
- Fudan University, Affiliated Pudong Medical Center & Pharmaceutical Analysis Department, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Gang Chen
- Fudan University, Affiliated Pudong Medical Center & Pharmaceutical Analysis Department, School of Pharmacy, Fudan University, Shanghai, 201203, China.
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Multiple influences of hydrogen bonding interactions on PLLA crystallization behaviors in PLLA/TSOS hybrid blending systems. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Hamad K, Kaseem M, Ayyoob M, Joo J, Deri F. Polylactic acid blends: The future of green, light and tough. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.07.001] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Arrigo R, Teresi R, Gambarotti C, Parisi F, Lazzara G, Dintcheva NT. Sonication-Induced Modification of Carbon Nanotubes: Effect on the Rheological and Thermo-Oxidative Behaviour of Polymer-Based Nanocomposites. MATERIALS 2018; 11:ma11030383. [PMID: 29510595 PMCID: PMC5872962 DOI: 10.3390/ma11030383] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/28/2018] [Accepted: 03/01/2018] [Indexed: 11/24/2022]
Abstract
The aim of this work is the investigation of the effect of ultrasound treatment on the structural characteristics of carbon nanotubes (CNTs) and the consequent influence that the shortening induced by sonication exerts on the morphology, rheological behaviour and thermo-oxidative resistance of ultra-high molecular weight polyethylene (UHMWPE)-based nanocomposites. First, CNTs have been subjected to sonication for different time intervals and the performed spectroscopic and morphological analyses reveal that a dramatic decrease of the CNT’s original length occurs with increased sonication time. The reduction of the initial length of CNTs strongly affects the nanocomposite rheological behaviour, which progressively changes from solid-like to liquid-like as the CNT sonication time increases. The study of the thermo-oxidative behaviour of the investigated nanocomposites reveals that the CNT sonication has a detrimental effect on the thermo-oxidative stability of nanocomposites, especially for long exposure times. The worsening of the thermo-oxidative resistance of sonicated CNT-containing nanocomposites could be attributed to the lower thermal conductivity of low-aspect-ratio CNTs, which causes the increase of the local temperature at the polymer/nanofillers interphase, with the consequent acceleration of the degradative phenomena.
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Affiliation(s)
- Rossella Arrigo
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, Ed. 6, 90128 Palermo, Italy.
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Viale T. Michel, 5, 15121 Alessandria, Italy.
| | - Rosalia Teresi
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, Ed. 6, 90128 Palermo, Italy.
| | - Cristian Gambarotti
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy.
| | - Filippo Parisi
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Giuseppe Lazzara
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Nadka Tzankova Dintcheva
- Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università degli Studi di Palermo, Viale delle Scienze, Ed. 6, 90128 Palermo, Italy.
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