1
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Malik P, Naskar S, Sengupta D, Mandal D. Controlled Molecular Orientation through Intercalation in PVDF Thin Films: Exhibiting Ultralong Retention and Improved Leakage Current. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8400-8408. [PMID: 38598711 DOI: 10.1021/acs.langmuir.3c03868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Ferroelectric switching and retention performance of poly(vinylidene fluoride) (PVDF) thin films improve by the incorporation of unmodified smectite montmorillonite (MMT) clay nanodielectric. In the present study, an intercalated PVDF (clay/PVDF) thin film with edge-on β-crystallite is fabricated via a heat-controlled spin coating (HCSC) technique. This provides an efficient and simple way to fabricate the edge-on oriented crystallite lamellae with an electroactive β-phase, facilitating nanoscale ferroelectric switching at a lower voltage compared to the face-on orientation. Here, we demonstrate the polarization retention for periods longer than 20 days (∼480 h, i.e., 1.8 × 106 s), with no degradation in switched nanoscale domains. In addition, by maintaining the relatively high dielectric constant, the incorporation of nanoclay effectively lowers the leakage current by 102 factors. The obtained memory window in the edge-on orientation is 7 V, approximately twice the memory window obtained in the face-on orientation. In short, our findings provide a simple and promising route to fabricate edge-on oriented PVDF thin films, with ultralong retention, high dielectric constant, and improved leakage current.
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Affiliation(s)
- Pinki Malik
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
| | - Sudip Naskar
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
| | - Dipanjan Sengupta
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
| | - Dipankar Mandal
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
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2
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Juhász ÁG, Nanys M, Pinke B, Fadel A, Godzierz M, Juriga-Tóth K, Molnár K, Juriga D, Jedlovszky-Hajdú A. Formation of Three-Dimensional Polysuccinimide Electrospun Fiber Meshes Induced by the Combination of CaCl 2 and Humidity. Macromol Rapid Commun 2024; 45:e2300625. [PMID: 38206977 DOI: 10.1002/marc.202300625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/03/2024] [Indexed: 01/13/2024]
Abstract
Even though electrospinning is getting more and more attention, the preparation of 3D nanofibrous meshes is still a big challenge that limits the application of electrospun materials, especially in tissue engineering. To overcome this problem, several solutions are introduced but most of them focus on the postprocessing of the electrospun meshes. This paper presents a straightforward novel method that utilizes the joint effect of the addition of CaCl2 and the relative environmental humidity (RH), which can induce the random 3D formation of polysuccinimide (PSI) electrospun fibers with different such as wrinkled or ribbon-like structures. Although the effect of humidity and inorganic salt additives on the micro and macrostructure of electrospun fibers is known, the connection between the two in this manner has never been presented. To investigate the effect, fibers with different PSI and CaCl2 concentrations at different humidity RH levels are prepared, and their microstructure is visualized with high-resolution scanning electron microscopy (SEM). To reveal the nature of the interaction between the polymer and the CaCl2, Fourier-transformed infrared (FTIR), X-ray diffraction (XRD), and thermogravimetry (TGA) measurements are carried out and 3D nanofibrous structures are obtained.
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Affiliation(s)
- Ákos György Juhász
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4., Budapest, H-1089, Hungary
| | - Monika Nanys
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4., Budapest, H-1089, Hungary
| | - Balázs Pinke
- Department of Polymer Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111, Hungary
| | - Alexandre Fadel
- UMR 8207, UMET-Unité Matériaux et Transformations, University Lille, CNRS, INRAE, Centrale Lille, Lille, F-59000, France
| | - Marcin Godzierz
- Centre of Polymer and Carbon Materials Polish Academy of Sciences M. Curie-Skłodowskiej 34 Str, Zabrze, 41-819, Poland
| | - Krisztina Juriga-Tóth
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4., Budapest, H-1089, Hungary
| | - Kolos Molnár
- Department of Polymer Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111, Hungary
- HUN-REN-BME Research Group for Composite Science and Technology, Műegyetem rkp. 3, Budapest, H-1111, Hungary
- MTA-BME Lendület Sustainable Polymers Research Group, Műegyetem rkp. 3, Budapest, H-1111, Hungary
| | - Dávid Juriga
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4., Budapest, H-1089, Hungary
| | - Angéla Jedlovszky-Hajdú
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4., Budapest, H-1089, Hungary
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Kumar V, Alam MN, Yewale MA, Park SS. Modulating the Configurations of "Gel-Type" Soft Silicone Rubber for Electro-Mechanical Energy Generation Behavior in Wearable Electronics. Gels 2023; 9:686. [PMID: 37754367 PMCID: PMC10529220 DOI: 10.3390/gels9090686] [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: 07/18/2023] [Revised: 08/12/2023] [Accepted: 08/21/2023] [Indexed: 09/28/2023] Open
Abstract
Electro-mechanical configurations can be piezo-electric transducers, triboelectric generators, electromagnetic induction, or hybrid systems. Our present study aims at developing energy generation through the piezoelectric principle. Gel-type soft SR with Shore A hardness below 30 was used as a versatile material for an elastomeric substrate. Also, multi-wall carbon nanotube (MWCNT), and diatomaceous earth (DE) were used as reinforcing fillers. This "gel-type" soft SR has crosslinking polymer networks with silicone encapsulated within its structure. Mechanical properties such as modulus or stretchability are of utmost importance for such devices based on "gel-type" soft. From the experiments, some of the mechanical aspect's values are summarized. For example, the stretchability was 99% (control) and changes to 127% (3 phr, MWCNT), 76% (20 phr DE), and 103% (20 phr hybrid). From electro-mechanical tests, the output voltage was 0.21 mV (control) and changed to 0.26 mV (3 phr, MWCNT), 0.19 mV (20 phr DE), and 0.29 mV (20 phr hybrid). Moreover, from real-time biomechanical human motion tests in "gel-type" soft-based composites, a relationship among output voltage from machine to human motions was established. Overall, these configurations make them promising against traditional portable devices such as batteries for small power applications such as mobile phones.
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Affiliation(s)
| | | | | | - Sang-Shin Park
- School of Mechanical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongbuk, Gyeongsan 38541, Republic of Korea; (V.K.); (M.N.A.); (M.A.Y.)
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4
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Liu P, Ji Y, Wu H, Guo S. Selectively multilayered distribution of stereocomplex crystallite and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) ribbons to achieve highly ductile and strong poly(l-lactide) composites. Int J Biol Macromol 2023; 246:125543. [PMID: 37355068 DOI: 10.1016/j.ijbiomac.2023.125543] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/11/2023] [Accepted: 06/21/2023] [Indexed: 06/26/2023]
Abstract
Blending poly(l-lactide) (PLLA) with elastic polymers is an efficient way to obtain highly ductile materials (> 300 %), but it is accompanied by a significant reduction in strength. In this work, a special alternating multilayered composites with alternating stereocomplex crystallite (SC) (PLLA/poly(d-lactide) (PDLA) layer) and highly oriented Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) ribbons (PLLA/PHBV layer) is in situ constructed during laminated structuring process. Experimental results show that in situ formed PHBV ribbons are limitedly distributed in the thickness direction and align parallel to the layer interfaces. More interestingly, not only highly oriented shish crystals but also sparse lamellae of PLLA, which are arrested by SC, shish crystals, and PHBV ribbons, are in situ formed. Compared with sea-island structured composites prepared by traditional compression molding, the alternating multilayered composites show an increase in elongation at break from 8.7 % to 345.1 % and an increase in yield strength from 61.4 MPa to 73.2 MPa. During the tensile testing, the PLLA/PHBV layers firstly form micro-fibrils and micro-voids, driving the molecular chains of the PLLA/PDLA layer to respond in time to external forces through stress transfer of rich continuous layer interfaces. Since shear yielding and plastic deformation can easily penetrate the entire matrix, the alternating multilayered composites go a brittle-ductile transformation and the ductility is improved significantly. The increased strength of the alternating multilayered material is ascribed to the stiff shish crystals and SC. This work provides important guidance for the durable application of strong and ductile PLLA-based materials.
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Affiliation(s)
- Pengfei Liu
- The State Key Laboratory of Polymer Materials Engineering, Sichuan Provincial Engineering Laboratory of Plastic/Rubber Complex Processing Technology, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Yuan Ji
- The State Key Laboratory of Polymer Materials Engineering, Sichuan Provincial Engineering Laboratory of Plastic/Rubber Complex Processing Technology, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Hong Wu
- The State Key Laboratory of Polymer Materials Engineering, Sichuan Provincial Engineering Laboratory of Plastic/Rubber Complex Processing Technology, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
| | - Shaoyun Guo
- The State Key Laboratory of Polymer Materials Engineering, Sichuan Provincial Engineering Laboratory of Plastic/Rubber Complex Processing Technology, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
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5
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Zhao Z, Zhang J, Bi R, Chen C, Yao J, Liu G. Study on the Overmolding Process of Carbon-Fiber-Reinforced Poly (Aryl Ether Ketone) (PAEK)/Poly (Ether Ether Ketone) (PEEK) Thermoplastic Composites. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4456. [PMID: 37374639 DOI: 10.3390/ma16124456] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/31/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023]
Abstract
This paper used poly (aryl ether ketone) (PAEK) resin with a low melting temperature to prepare laminate via the compression-molding process for continuous-carbon-fiber-reinforced composites (CCF-PAEK). Then, poly (ether ether ketone) (PEEK), or a short-carbon-fiber-reinforced poly (ether ether ketone) (SCF-PEEK) with a high melting temperature, was injected to prepare the overmolding composites. The shear strength of short beams was used to characterize the interface bonding strength of composites. The results showed that the interface properties of the composite were affected by the interface temperature, which was adjusted by mold temperature. PAEK and PEEK formed a better interfacial bonding at higher interface temperatures. The shear strength of the SCF-PEEK/CCF-PAEK short beam was 77 MPa when the mold temperature was 220 °C and 85 MPa when the mold temperature was raised to 260 °C. The melting temperature did not significantly affect the shear strength of SCF-PEEK/CCF-PAEK short beams. For the melting temperature increasing from 380 °C to 420 °C, the shear strength of the SCF-PEEK/CCF-PAEK short beam ranged from 83 MPa to 87 MPa. The microstructure and failure morphology of the composite was observed using an optical microscope. A molecular dynamics model was established to simulate the adhesion of PAEK and PEEK at different mold temperatures. The interfacial bonding energy and diffusion coefficient agreed with the experimental results.
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Affiliation(s)
- Ziyue Zhao
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Jindong Zhang
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Ran Bi
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Chunhai Chen
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Jianan Yao
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Gang Liu
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
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6
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Ming Y, Zhou Z, Hao T. Molecular simulation of crystal nucleation and growth of structurally restricted polymer nanocomposites. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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7
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Effect of coconut fibers chemically modified with alkoxysilanes on the crystallization, thermal, and dynamic mechanical properties of poly(lactic acid) composites. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04740-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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8
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Yang C, Zhang D, Nie M, Wang Q, Guo Y. Biaxial reinforcements for polyethylene medical-tubes via helical convergent flow. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03294-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/07/2022]
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9
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Tunable β-crystals formation from transcrystallinity to cylindrites at PP/PE interface via using melt penetration engineering. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Sansone ND, Razzaz Z, Salari M, Tuccitto AV, Aguiar R, Leroux M, Lee PC. Tailoring Multifunctional and Lightweight Hierarchical Hybrid Graphene Nanoplatelet and Glass Fiber Composites. ACS APPLIED MATERIALS & INTERFACES 2022; 14:40232-40246. [PMID: 36000496 DOI: 10.1021/acsami.2c11231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this work, hybrid polypropylene (PP)-based composites reinforced with graphene nanoplatelets (GnPs) and glass fiber (GF) were fabricated by injection molding to elucidate how the hybrid approach can produce synergistic effects capable of achieving properties and functionalities not possible in biphasic composites. Synergism between the reinforcements translated to improved mechanical performance, which was attributed to the chemically and/or electrostatically assembled hierarchical structure that facilitates load transfer at the interface while simultaneously tailoring the crystalline microstructure of the matrix by inducing transcrystallization and β-crystal formation. It was demonstrated that there exists an optimal concentration of 0.5 wt % GnP, producing the greatest mechanical properties and synergistic effect, corresponding to the highest degree of crystallinity (∼6% greater than Neat PP) and peak formation of β-crystals within the PP matrix. The greatest synergistic effect was found to be ∼52 and ∼39% for the specific tensile strength and flexural strength, respectively. The same optimal concentration of GnPs was found to produce the highest synergistic effect for thermal conductivity of ∼68% due to the volume exclusion effect induced by the GFs combined with the higher crystallinity of the microstructure, promoting the formation of thermally conductive pathways. Ultimately, the mechanisms contributing to the synergistic effect presented in this work can be used to maximize the performance of hybrid composite systems, giving them the potential to be tailored for a variety of high-performance industrial applications to meet the rising demands for ultra-strong, thermally conductive, and lightweight materials.
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Affiliation(s)
- Nello D Sansone
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
| | - Zahir Razzaz
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
- Axiom Group Inc., 115 Mary Street, Aurora L4G 1G3, Canada
| | - Meysam Salari
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
| | - Anthony V Tuccitto
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
| | - Rafaela Aguiar
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
| | - Matthew Leroux
- Axiom Group Inc., 115 Mary Street, Aurora L4G 1G3, Canada
| | - Patrick C Lee
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada
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11
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Novel Rubber Composites Based on Copper Particles, Multi-Wall Carbon Nanotubes and Their Hybrid for Stretchable Devices. Polymers (Basel) 2022; 14:polym14183744. [PMID: 36145889 PMCID: PMC9505250 DOI: 10.3390/polym14183744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/31/2022] [Accepted: 09/04/2022] [Indexed: 02/07/2023] Open
Abstract
New technologies are constantly addressed in the scientific community for updating novel stretchable devices, such as flexible electronics, electronic packaging, and piezo-electric energy-harvesting devices. The device promoted in the present work was found to generate promising ~6V and durability of >0.4 million cycles. This stretchable device was based on rubber composites. These rubber composites were developed by solution mixing of room temperature silicone rubber (RTV-SR) and nanofiller, such as multi-wall carbon nanotube (MWCNT) and micron-sized copper particles and their hybrid. The hybrid composite consists of 50:50 of both fillers. The mechanical stretchability and compressive modulus of the composites were studied in detail. For example, the compressive modulus was 1.82 MPa (virgin) and increased at 3 per hundred parts of rubber (phr) to 3.75 MPa (MWCNT), 2.2 MPa (copper particles) and 2.75 MPa (hybrid). Similarly, the stretching ability for the composites used in fabricating devices was 148% (virgin) and changes at 3 phr to 144% (MWCNT), 230% (copper particles) and 199% (hybrid). Hence, the hybrid composite was found suitable with optimum stiffness and robust stretching ability to be useful for stretching electronic devices explored in this work. These improved properties were tested for a real-time stretchable device, such as a piezoelectric energy-harvesting device and their improved voltage output and durability were reported. In the end, a series of experiments conducted were summarized and a discussion on the best candidate with higher properties useful for prospective applications was reported.
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12
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Ye C, Yu F, Huang Y, Hua M, Zhang S, Feng J. Hydrochar as an environment-friendly additive to improve the performance of biodegradable plastics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 832:155124. [PMID: 35405227 DOI: 10.1016/j.scitotenv.2022.155124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/03/2022] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
Plastic additives affect the properties of plastics, which further determine the application range of plastics. However, most plastic additives have environmental friendliness or performance issues limiting their application. Hydrochar (HC) from waste biomass by hydrothermal carbonization has been proved to contain organic matter as function substances, like a binder, and is environment-friendly material. Currently, hydrochar as a plastic additive has not been previously reported. In this study, the HC/PBAT composites were produced by hydrochar blending with poly (butylene adipate-co-terephthalate) (PBAT) which is a biodegradable polymer. The hydrochar produced at different hydrothermal carbonization temperatures (180 °C, 210 °C, 240 °C, 270 °C, and 300 °C) and the addition of hydrochar (10 wt%, 20 wt%) were investigated. The results showed that the elastic modulus of the composites was increased by 27.4 MPa and 32.5 MPa compared with virgin PBAT while adding 10 wt% and 20 wt% hydrochar, respectively. Moreover, the stiffness of the composite was improved, and the balance of stiffness and toughness of the composites was effectively maintained when adding 10 wt% hydrochar treated at 300 °C. The elongation at break, tensile strength, and the elastic modulus of its composites were 630.8 ± 13.7%, 23.0 ± 0.4 MPa, and 100.5 ± 2.7 MPa, respectively. Furthermore, the crystallization temperature of the composites was increased after hydrochar was added into PBAT, and the maximum was 87.9 °C. It also means that hydrochar has a great nucleation effect during plastic processing. Therefore, hydrochar can be used as an environment-friendly additive to promote the performance of biodegradable plastic and promise to be applied in the field of biodegradable plastics.
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Affiliation(s)
- Cheng Ye
- Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Fengbo Yu
- Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Yanqin Huang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Mingda Hua
- Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Shicheng Zhang
- Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Jiachun Feng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
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13
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Gao K, Huang Y, Han Y, Gao Y, Dong C, Liu J, Li F, Zhang L. Designing Heterogeneous Surfaces of Two-Dimensional Nanosheets to Maximize Mechanical Reinforcing of Polymer Nanocomposites via Molecular Dynamics Simulation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ke Gao
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
| | - Yongdi Huang
- Department of Mathematics and Computer Science, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
| | - Yue Han
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
| | - Yangyang Gao
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
| | - Caibo Dong
- Institute of Automation, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
| | - Jun Liu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
| | - Fanzhu Li
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
| | - Liqun Zhang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
- Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100013, People’s Republic of China
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14
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Structure and Morphology of Poly(ε-caprolactone) Heterogeneous Shish-Kebab Structure Induced by Poly(lactic acid) Nanofibers. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2747-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Zhang Y, Su K, Zhang M, Li Z. Polydopamine-modified HKUST-1 as nanofiller of PPS@PA membrane with well improved desalination performance. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Zhao M, Wu HM, Zhu Z, Wu JL, Kang WH, Sue HJ. Preparation of Polyethylene Nanocomposites Based on Polyethylene Grafted Exfoliated α-Zirconium Phosphate. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mingzhen Zhao
- Department of Material Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Hong-Mao Wu
- Department of Material Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
- Polyolefin Department, Formosa Plastics Corporation, Mailiao, Yunlin County 63801, Taiwan
| | - Zewen Zhu
- Department of Material Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Jen-Long Wu
- Polyolefin Department, Formosa Plastics Corporation, Mailiao, Yunlin County 63801, Taiwan
| | - Wen-Hao Kang
- Polyolefin Department, Formosa Plastics Corporation, Mailiao, Yunlin County 63801, Taiwan
| | - Hung-Jue Sue
- Department of Material Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
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Altorbaq AS, Krauskopf AA, Wen X, Pérez-Camargo RA, Su Y, Wang D, Müller AJ, Kumar SK. Crystallization Kinetics and Nanoparticle Ordering in Semicrystalline Polymer Nanocomposites. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101527] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Watanabe R, Sugahara A, Hagihara H, Mizukado J, Shinzawa H. Molecular-scale deformation of glass-fiber-reinforced polypropylene probed by rheo-optical Fourier transform infrared imaging combined with a two-trace two-dimensional correlation technique. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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High Performance of PVA Nanocomposite Reinforced by Janus-like Asymmetrically Oxidized Graphene: Synergetic Effect of H-bonding Interaction and Interfacial Crystallization. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2664-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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21
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Yang J, Liu Z, Zhou Z, Ming Y, Li S, Hao T, Nie Y. Molecular dynamics simulations of the effects of carbon nanotube content on stretch-induced crystallization of polyethylene/carbon nanotube nanocomposites. Phys Chem Chem Phys 2022; 24:16021-16030. [DOI: 10.1039/d2cp01522f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work, we used molecular dynamics simulations to study the effects of carbon nanotube (CNT) content on stretch-induced crystallization behaviors in CNT filled polyethylene systems. During high-temperature stretching,...
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22
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Precursor formation and crystal nucleation in stretched polyethylene/carbon nanotube nanocomposites. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Polymer Nanocomposites: Role of modified filler content and interfacial interaction on crystallization. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110894] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Liu R, Nie Y, Ming Y, Hao T, Zhou Z. Simulations on polymer nanocomposite crystallization. POLYMER CRYSTALLIZATION 2021. [DOI: 10.1002/pcr2.10214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Rongjuan Liu
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Yijing Nie
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Yongqiang Ming
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Tongfan Hao
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Zhiping Zhou
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
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Lei C, Xie Z, Wu K, Fu Q. Controlled Vertically Aligned Structures in Polymer Composites: Natural Inspiration, Structural Processing, and Functional Application. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2103495. [PMID: 34590751 DOI: 10.1002/adma.202103495] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 07/08/2021] [Indexed: 05/23/2023]
Abstract
Vertically aligned structures, which are a series of characteristic conformations with thickness-direction alignment, interconnection, or assembly of filler in polymeric composite materials that can provide remarkable structural performance and advanced anisotropic functions, have attracted considerable attention in recent years. The past two decades have witnessed extensive development with regard to universal fabrication methods, subtle control of morphological features, improvement of functional properties, and superior applications of vertically aligned structures in various fields. However, a systematic review remains to be attempted. The various configurations of vertical structures inspired from biological samples in nature, such as vertically aligned structures with honeycomb, reed, annual ring, radial, and lamellar configurations are summarized here. Additionally, relevant processing methods, which include the transformation of oriented direction, external-field inducement, template method, and 3D printing method, are discussed in detail. The diverse applications in mechanical, thermal, electric, dielectric, electromagnetic, water treatment, and energy fields are also highlighted by providing representative examples. Finally, future opportunities and prospects are listed to identify current issues and potential research directions. It is expected that perspectives on the vertically aligned structures presented here will contribute to the research on advanced multifunctional composites.
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Affiliation(s)
- Chuxin Lei
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Zilong Xie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Kai Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Qiang Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
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Shin H, Kim S, Kim J, Kong S, Lee Y, Lee J. Preparation of 3‐pentadecylphenol‐modified cellulose nanocrystal and its application as a filler to polypropylene nanocomposites having improved antibacterial and mechanical properties. J Appl Polym Sci 2021. [DOI: 10.1002/app.51848] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Huiseob Shin
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Sangwan Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Jinseok Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Saerom Kong
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Yonghoon Lee
- Chemical Pilot Bldg. S‐OIL TS&D Center Seoul Republic of Korea
| | - Jong‐Chan Lee
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
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Rasana N, Jayanarayanan K, Mohan HT, Keller T. Static and dynamic mechanical properties of nanosilica and multiwalled carbon nanotube reinforced acrylonitrile butadiene styrene composites: theoretical mechanism of nanofiller reinforcement. IRANIAN POLYMER JOURNAL 2021. [DOI: 10.1007/s13726-021-00962-5] [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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Bormashenko E, Valtsifer V. Interfacial crystallization at the intersection of thermodynamic and geometry. Adv Colloid Interface Sci 2021; 296:102510. [PMID: 34478938 DOI: 10.1016/j.cis.2021.102510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/18/2021] [Accepted: 08/21/2021] [Indexed: 10/20/2022]
Abstract
Interfacial crystallization appears as a crucial stage in the numeral natural phenomena and technological applications, such as industry of semi-conductors and manufacturing of nano-whiskers. Interfacial aspects of heterogeneous crystallization are surveyed. The review is focused on the interplay of thermodynamic and geometric aspects of the interfacial crystallization. Thermodynamic considerations leading to the Wulff construction are discussed. Equilibrium shape of the crystallized particle in the contact with a foreign substrate giving rise to the Winterbottom construction is treated. The concept of equivalent equilibrium contact angle θeq is introduced. The equivalent contact angle θeq applicable for isotropic crystals does not depend neither on the volume of the crystallized particles nor on the external fields. Bulk contributions to the free energy of the particle such as the bulk heat release in the case of reactive contact or latent heat of crystallization do not influence the equivalent contact angle θeq. Application of the Winterbottom constructions for prediction of the shape of nanoparticles grown on solid substrates is treated. Thermodynamics of interfacial crystallization is discussed. The thermodynamic condition predicting when surface crystallization is thermodynamically favored over homogeneous (bulk) crystallization is supplied. This thermodynamic relation coincides with the condition prescribing the partial wetting of a solid by its melt. Interfacial crystallization in its relation to the "coffee-stain" effect, salt creeping and development of anti-icing surfaces is addressed. Interfacial aspects of epitaxial growth of crystals are considered. The current state-of-art in the field is reviewed.
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Dubrovskii VV, Aderikha VN, Pesetskii SS, Shapovalov VA. Hybrid Filling of Polyethylene Terephthalate with Multi-Walled Carbon Nanotubes and Short Glass Fibers. RUSS J APPL CHEM+ 2021. [DOI: 10.1134/s1070427221060100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ganesan V, Shanmugam V, Kaliyamoorthy B, Sanjeevi S, Shanmugam SK, Alagumalai V, Krishnamoorthy Y, Försth M, Sas G, Javad Razavi SM, Das O. Optimisation of Mechanical Properties in Saw-Dust/Woven-Jute Fibre/Polyester Structural Composites under Liquid Nitrogen Environment Using Response Surface Methodology. Polymers (Basel) 2021; 13:polym13152471. [PMID: 34372073 PMCID: PMC8348592 DOI: 10.3390/polym13152471] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 07/22/2021] [Accepted: 07/22/2021] [Indexed: 11/16/2022] Open
Abstract
Natural fibre-based composites are replacing traditional materials in a wide range of structural applications that are used in different environments. Natural fibres suffer from thermal shocks, which affects the use of these composites in cold environment. Considering these, a goal was set in the present research to investigate the impact of cryogenic conditions on natural fibre composites. Composites were developed using polyester as matrix and jute-fibre and waste Teak saw-dust as reinforcement and filler, respectively. The effects of six parameters, viz., density of saw-dust, weight ratio of saw-dust, grade of woven-jute, number of jute layers, duration of cryogenic treatment of composite and duration of alkaline treatment of fibres on the mechanical properties of the composite was evaluated with an objective to maximise hardness, tensile, impact and flexural strengths. Taguchi method was used to design the experiments and response-surface methodology was used to model, predict and plot interactive surface plots. Results indicated that the duration of cryogenic treatment had a significant effect on mechanical properties, which was better only up to 60 min. The models were found to be statistically significant. The study concluded that saw-dust of density 300 kg/m3 used as a filler with a weight ratio of 13 wt.% and a reinforcement of a single layer of woven-jute-fibre mat of grade 250 gsm subjected to alkaline treatment for 4 h in a composite that has undergone 45 min of cryogenic treatment presented an improvement of 64% in impact strength, ca. 21% in flexural strength, ca. 158% in tensile strength and ca. 28% in hardness.
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Affiliation(s)
- Velmurugan Ganesan
- Department of Agricultural Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, India
- Correspondence: (V.G.); (S.M.J.R.); or (O.D.)
| | - Vigneshwaran Shanmugam
- Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, India; (V.S.); (V.A.)
| | - Babu Kaliyamoorthy
- Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai 603110, India;
| | - Sekar Sanjeevi
- Department of Mechanical Engineering, Hindusthan Institute of Technology, Coimbatore 641028, India;
| | - Suresh Kumar Shanmugam
- Faculty of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil 626128, India;
| | - Vasudevan Alagumalai
- Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, India; (V.S.); (V.A.)
| | - Yoganandam Krishnamoorthy
- Department of Mechanical Engineering, ARM College of Engineering and Technology, Chennai 602105, India;
| | - Michael Försth
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 97187 Luleå, Sweden; (M.F.); (G.S.)
| | - Gabriel Sas
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 97187 Luleå, Sweden; (M.F.); (G.S.)
| | - Seyed Mohammad Javad Razavi
- Department of Mechanical Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
- Correspondence: (V.G.); (S.M.J.R.); or (O.D.)
| | - Oisik Das
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 97187 Luleå, Sweden; (M.F.); (G.S.)
- Correspondence: (V.G.); (S.M.J.R.); or (O.D.)
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Shin H, Lim MY, Kong S, Kim S, Lee SW, Lee Y, Lee JC. Improving Physical Properties of Polypropylene Nanocomposites by a Natural Resource-Based Bottom-up Graphene Oxide Filler. Macromol Res 2021. [DOI: 10.1007/s13233-021-9062-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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32
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Hong R, Hu M, Chen J, Fu Q, Zhang J. Structure Evolution and Hoop-Reinforcing Mechanism of Bionic-Inspired Off-Axial Glass Fiber-Reinforced High-Density Polyethylene Pipes Fabricated via Rotating Co-extrusion. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Rui Hong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Menglong Hu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jin Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Qiang Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jie Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Naffakh M, Rica P, Moya-Lopez C, Castro-Osma JA, Alonso-Moreno C, Moreno DA. The Effect of WS 2 Nanosheets on the Non-Isothermal Cold- and Melt-Crystallization Kinetics of Poly(l-lactic acid) Nanocomposites. Polymers (Basel) 2021; 13:2214. [PMID: 34279357 PMCID: PMC8271659 DOI: 10.3390/polym13132214] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/29/2021] [Accepted: 07/01/2021] [Indexed: 11/28/2022] Open
Abstract
In the present work, hybrid nanocomposite materials were obtained by a solution blending of poly(l-lactic acid) (PLLA) and layered transition-metal dichalcogenides (TMDCs) based on tungsten disulfide nanosheets (2D-WS2) as a filler, varying its content between 0 and 1 wt%. The non-isothermal cold- and melt-crystallization and melting behavior of PLLA/2D-WS2 were investigated. The overall crystallization rate, final crystallinity, and subsequent melting behavior of PLLA were controlled by both the incorporation of 2D-WS2 and variation of the cooling/heating rates. In particular, the analysis of the cold-crystallization behavior of the PLLA matrix showed that the crystallization rate of PLLA was reduced after nanosheet incorporation. Unexpectedly for polymer nanocomposites, a drastic change from retardation to promotion of crystallization was observed with increasing the nanosheet content, while the melt-crystallization mechanism of PLLA remained unchanged. On the other hand, the double-melting peaks, mainly derived from melting-recrystallization-melting processes upon heating, and their dynamic behavior were coherent with the effect of 2D-WS2 involved in the crystallization of PLLA. Therefore, the results of the present study offer a new perspective for the potential of PLLA/hybrid nanocomposites in targeted applications.
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Affiliation(s)
- Mohammed Naffakh
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Pablo Rica
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Carmen Moya-Lopez
- Facultad de Farmacia, Universidad de Castilla-La Mancha (FF-UCLM), Avda. Dr. José María Sánchez Ibáñez s/n, 02008 Albacete, Spain
- LMOPS, CentraleSupelec, University of Lorraine, 2 Rue E. Belin, 57070 Metz, France
| | - José Antonio Castro-Osma
- Facultad de Farmacia, Universidad de Castilla-La Mancha (FF-UCLM), Avda. Dr. José María Sánchez Ibáñez s/n, 02008 Albacete, Spain
- Centro Regional de Investigaciones Biomédicas, Unidad NanoCRIB, 02008 Albacete, Spain
| | - Carlos Alonso-Moreno
- Facultad de Farmacia, Universidad de Castilla-La Mancha (FF-UCLM), Avda. Dr. José María Sánchez Ibáñez s/n, 02008 Albacete, Spain
- Centro Regional de Investigaciones Biomédicas, Unidad NanoCRIB, 02008 Albacete, Spain
| | - Diego A Moreno
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain
- Facultad de Farmacia, Universidad de Castilla-La Mancha (FF-UCLM), Avda. Dr. José María Sánchez Ibáñez s/n, 02008 Albacete, Spain
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Li C, Gao Y, Wang L, Li J, Guo S. Fabrication, structure, and properties of Poly-(Lactide) multilayers with ultrahigh content, ordered, and continuous transcrystallinity. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Interaction of Poly L-Lactide and Tungsten Disulfide Nanotubes Studied by in Situ X-ray Scattering during Expansion of PLLA/WS 2NT Nanocomposite Tubes. Polymers (Basel) 2021; 13:polym13111764. [PMID: 34072208 PMCID: PMC8198810 DOI: 10.3390/polym13111764] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 11/27/2022] Open
Abstract
In situ synchrotron X-ray scattering was used to reveal the transient microstructure of poly(L-lactide) (PLLA)/tungsten disulfide inorganic nanotubes (WS2NTs) nanocomposites. This microstructure is formed during the blow molding process (“tube expansion”) of an extruded polymer tube, an important step in the manufacturing of PLLA-based bioresorbable vascular scaffolds (BVS). A fundamental understanding of how such a microstructure develops during processing is relevant to two unmet needs in PLLA-based BVS: increasing strength to enable thinner devices and improving radiopacity to enable imaging during implantation. Here, we focus on how the flow generated during tube expansion affects the orientation of the WS2NTs and the formation of polymer crystals by comparing neat PLLA and nanocomposite tubes under different expansion conditions. Surprisingly, the WS2NTs remain oriented along the extrusion direction despite significant strain in the transverse direction while the PLLA crystals (c-axis) form along the circumferential direction of the tube. Although WS2NTs promote the nucleation of PLLA crystals in nanocomposite tubes, crystallization proceeds with largely the same orientation as in neat PLLA tubes. We suggest that the reason for the unusual independence of the orientations of the nanotubes and polymer crystals stems from the favorable interaction between PLLA and WS2NTs. This favorable interaction leads WS2NTs to disperse well in PLLA and strongly orient along the axis of the PLLA tube during extrusion. As a consequence, the nanotubes are aligned orthogonally to the circumferential stretching direction, which appears to decouple the orientations of PLLA crystals and WS2NTs.
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Resistant Starch-Based Edible Coating Composites for Spray-Dried Microencapsulation of Lactobacillus acidophilus, Comparative Assessment of Thermal Protection, In Vitro Digestion and Physicochemical Characteristics. COATINGS 2021. [DOI: 10.3390/coatings11050587] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Polysaccharides have excellent potential as food-grade coating materials for microencapsulation in pro- and prebiotics-based functional food industry. In this study, potato, maize, and rice resistant starches composite coatings with D-mannose, maltodextrin, and whey protein concentrate were prepared for the spray-dried microencapsulation of Lactobacillus acidophilus KLDS 1.1003. Assessment of different polysaccharide coatings to enhance the longevity of probiotics at high temperatures of spray-drying process, storage, and targeted delivery in the gastrointestinal tract were the key objectives of the present study. The highest microencapsulation efficiencies were shown by maize (95.80%) and potato (94.30%) resistant starches. Similarly, maize resistant starch (MRS)-based composites provided the highest thermal resistance, with Tg 38.77 ± 1.10–93.13 ± 0.81 °C and showed the least 2.1 log cycles viability loss in simulated GI tract. Viability losses during storage were in the following order: control > RRS > PRS > MRS, and the inactivation rate of the microencapsulated cells followed the first-order kinetics (R2 = 0.9264–0.9918). The resistant starch-based spray-dried microcapsules possessed 27.00 ± 0.03 to 52.28 ± 1.02 µm size range and SEM micrographs showed a unified smooth surface without cracks and ruptures. These findings will expand the potential use of natural food-grade coatings in functional foods and allied industries involving spray-dried products.
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Su X, Jia S, Cao L, Yu D. High performance polylactic acid/thermoplastic polyurethane blends with in‐situ fibrillated morphology. J Appl Polym Sci 2021. [DOI: 10.1002/app.51014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaolong Su
- School of Chemistry, State Key Laboratory of Electrical Insulation and Power Equipments Xi'an Jiaotong University Xi'an Shaanxi China
| | - Shikui Jia
- School of Materials Science and Engineering Shaanxi University of Technology Hanzhong Shaanxi China
| | - Le Cao
- School of Materials Science and Engineering Shaanxi University of Technology Hanzhong Shaanxi China
| | - Demei Yu
- School of Chemistry, State Key Laboratory of Electrical Insulation and Power Equipments Xi'an Jiaotong University Xi'an Shaanxi China
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Chi E, Tang Y, Wang Z. In Situ SAXS and WAXD Investigations of Polyamide 66/Reduced Graphene Oxide Nanocomposites During Uniaxial Deformation. ACS OMEGA 2021; 6:11762-11771. [PMID: 34056330 PMCID: PMC8153992 DOI: 10.1021/acsomega.1c01365] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Epitaxial crystallization between Polyamide 66 (PA66) and reduced graphene oxide (RGO) can enhance the interfacial interaction and the mechanical properties of PA66/RGO nanocomposites. In situ two-dimensional synchrotron radiation wide angle X-ray diffraction and small angle X-ray scattering were used to track the structural evolution of the PA66/RGO nanocomposites with an epitaxial crystal during uniaxial deformation. In the PA66/RGO nanocomposites, the structural evolution of non-epitaxial and epitaxial crystals could be clearly analyzed. The non-epitaxial crystal, whose crystal plane can slip, shows the rearrangement and the Brill transition during uniaxial deformation. While the PA66 chains of an epitaxial crystal are held by RGO, the crystal plane could therefore not slip. The epitaxial crystal also constrains the deformation of the amorphous phase and the crystal form transition of non-epitaxial crystals around them. With the content increase of epitaxial crystals, the constraint effect becomes more obvious. Therefore, the rigid epitaxial crystals in the PA66/RGO nanocomposites promote mechanical properties. The present findings can deepen the understanding of structural evolution during the tensile deformation of PA66/RGO nanocomposites and the influence of the epitaxial crystals on the mechanical property in semicrystalline polymers with a H-bond.
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Affiliation(s)
- Enyi Chi
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, PR China
| | - Yujing Tang
- Sinopec
Beijing Research Institute of Chemical Industry, Beijing 100013, People’s Republic of China
| | - Zongbao Wang
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, PR China
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Boyer SAE, Haudin J, Song V, Bourassier V, Navard P, Barron C. Transcrystallinity in maize tissues/polypropylene composites: First focus of the heterogeneous nucleation and growth stages versus tissue type. POLYMER CRYSTALLIZATION 2021. [DOI: 10.1002/pcr2.10155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Séverine A. E. Boyer
- Mines ParisTech, PSL‐Research University, CEMEF‐Centre de Mise en Forme des Matériaux (Member of the European Polysaccharide Network of Excellence (EPNOE), www.epnoe.eu), UMR CNRS 7635 CS 10207, Rue Claude Daunesse, 06904,Sophia Antipolis Cedex France
| | - Jean‐Marc Haudin
- Mines ParisTech, PSL‐Research University, CEMEF‐Centre de Mise en Forme des Matériaux (Member of the European Polysaccharide Network of Excellence (EPNOE), www.epnoe.eu), UMR CNRS 7635 CS 10207, Rue Claude Daunesse, 06904,Sophia Antipolis Cedex France
| | - Vivian Song
- Mines ParisTech, PSL‐Research University, CEMEF‐Centre de Mise en Forme des Matériaux (Member of the European Polysaccharide Network of Excellence (EPNOE), www.epnoe.eu), UMR CNRS 7635 CS 10207, Rue Claude Daunesse, 06904,Sophia Antipolis Cedex France
| | - Vincent Bourassier
- Mines ParisTech, PSL‐Research University, CEMEF‐Centre de Mise en Forme des Matériaux (Member of the European Polysaccharide Network of Excellence (EPNOE), www.epnoe.eu), UMR CNRS 7635 CS 10207, Rue Claude Daunesse, 06904,Sophia Antipolis Cedex France
| | - Patrick Navard
- Mines ParisTech, PSL‐Research University, CEMEF‐Centre de Mise en Forme des Matériaux (Member of the European Polysaccharide Network of Excellence (EPNOE), www.epnoe.eu), UMR CNRS 7635 CS 10207, Rue Claude Daunesse, 06904,Sophia Antipolis Cedex France
| | - Cécile Barron
- IATE, University Montpellier, Cirad, INRAE, Institut Agro Montpellier France
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Luo S, Sun J, Huang A, Li J, Gao C, Luo H, Wei L, Qin S. The crystallization and rheological behaviors of in situ microfibrillar isotactic polypropylene/polyamide 66 composites with a selective β‐nucleating agent distribution. J Appl Polym Sci 2020. [DOI: 10.1002/app.49580] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shanshan Luo
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guizhou Material Technology Innovation Base National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane Processes Guiyang China
| | - Jing Sun
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guizhou Material Technology Innovation Base National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane Processes Guiyang China
| | - Anrong Huang
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guizhou Material Technology Innovation Base National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane Processes Guiyang China
| | - Juan Li
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guizhou Material Technology Innovation Base National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane Processes Guiyang China
| | - Chengtao Gao
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guizhou Material Technology Innovation Base National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane Processes Guiyang China
| | - Heng Luo
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guizhou Material Technology Innovation Base National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane Processes Guiyang China
| | - Liangqiang Wei
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guizhou Material Technology Innovation Base National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane Processes Guiyang China
| | - Shuhao Qin
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guizhou Material Technology Innovation Base National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane Processes Guiyang China
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Miao W, Wu F, Zhou S, Yao G, Li Y, Wang Z. Epitaxial Crystallization of Poly(ε-caprolactone) on Reduced Graphene Oxide at a Low Shear Rate by In Situ SAXS/WAXD Methods. ACS OMEGA 2020; 5:31535-31542. [PMID: 33344805 PMCID: PMC7745218 DOI: 10.1021/acsomega.0c03410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/30/2020] [Indexed: 06/12/2023]
Abstract
The interfacial interaction between polymers and reinforcements has a positive effect on the properties of polymer nanocomposites, and a further study on the evolution of this interfacial interaction under a shear field is conducive to reasonable regulation of the properties of polymer nanocomposites. For this purpose, epitaxial crystallization of poly(ε-caprolactone) (PCL) on reduced graphene oxide (RGO) is investigated by shearing at the shear rate of 3 s-1 by in situ synchrotron radiation. In situ two-dimensional small-angle X-ray scattering (2D SAXS) results suggest that the imposed shear field promotes the orientation of the polymer chains, resulting in the formation of a large periodic structure of PCL on the RGO surface. In addition, higher shear temperatures facilitate the conformational adjustment of the PCL molecular chain on RGO at the shear rate of 3 s-1, resulting in the formation of thicker lamellae. In situ two-dimensional wide-angle X-ray diffraction (2D WAXD) results show that shear enhances the crystallinity of the PCL/RGO nanocomposite and promotes the oriented growth of epitaxial and bulk crystals. The current findings can improve the understanding of the structural evolution behavior of PCL/RGO nanocomposites after shear and especially enhance dramatically our understanding of the underlying mechanism of influence of shear on interfacial epitaxial crystallization in polymer/graphene nanocomposite systems.
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Affiliation(s)
- Weijun Miao
- Ningbo Key Laboratory of
Specialty Polymers, State Key Laboratory Base of Novel Functional
Materials and Preparation Science, Faculty of Materials Science and
Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Feng Wu
- Ningbo Key Laboratory of
Specialty Polymers, State Key Laboratory Base of Novel Functional
Materials and Preparation Science, Faculty of Materials Science and
Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Shiman Zhou
- Ningbo Key Laboratory of
Specialty Polymers, State Key Laboratory Base of Novel Functional
Materials and Preparation Science, Faculty of Materials Science and
Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Guibin Yao
- Ningbo Key Laboratory of
Specialty Polymers, State Key Laboratory Base of Novel Functional
Materials and Preparation Science, Faculty of Materials Science and
Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Yiguo Li
- Ningbo Key Laboratory of
Specialty Polymers, State Key Laboratory Base of Novel Functional
Materials and Preparation Science, Faculty of Materials Science and
Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Zongbao Wang
- Ningbo Key Laboratory of
Specialty Polymers, State Key Laboratory Base of Novel Functional
Materials and Preparation Science, Faculty of Materials Science and
Chemical Engineering, Ningbo University, Ningbo 315211, China
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Shahnooshi M, Javadi A, Nazockdast H, Ottermann K, Altstädt V. Rheological rationalization of in situ nanofibrillar structure development: Tailoring of nanohybrid shish-kebab superstructures of poly (lactic acid) crystalline phase. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Naffakh M, Fernández M, Shuttleworth PS, García AM, Moreno DA. Nanocomposite Materials with Poly(l-lactic Acid) and Transition-Metal Dichalcogenide Nanosheets 2D-TMDCs WS 2. Polymers (Basel) 2020; 12:E2699. [PMID: 33207692 PMCID: PMC7698076 DOI: 10.3390/polym12112699] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/11/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023] Open
Abstract
Layered transition-metal dichalcogenides (TMDCs) based on tungsten disulfide nanosheets (2D-WS2) were introduced via melt processing into poly(l-lactic acid) (PLLA) to generate PLLA/2D-WS2 nanocomposite materials. The effects of the 2D-WS2 on the morphology, crystallization, and biodegradation behavior of PLLA were investigated. In particular, the non-isothermal melt-crystallization of neat PLLA and PLLA/2D-WS2 nanocomposites were analyzed in detail by varying both the cooling rate and 2D-WS2 loading. The kinetic parameters of PLLA chain crystallization are successfully described using the Liu model. It was found that the PLLA crystallization rate was reduced with 2D-WS2 incorporation, while the crystallization mechanism and crystal structure of PLLA remained unchanged in spite of nanoparticle loading. This was due to the PLLA chains not being able to easily adsorb on the WS2 nanosheets, hindering crystal growth. In addition, from surface morphology analysis, it was observed that the addition of 2D-WS2 facilitated the enzymatic degradation of poorly biodegradable PLLA using a promising strain of actinobacteria, Lentzea waywayandensis. The identification of more suitable enzymes to break down PLLA nanocomposites will open up new avenues of investigation and development, and it will also lead to more environmentally friendly, safer, and economic routes for bioplastic waste management.
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Affiliation(s)
- Mohammed Naffakh
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain; (M.F.); (A.M.G.); (D.A.M.)
| | - Miriam Fernández
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain; (M.F.); (A.M.G.); (D.A.M.)
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain;
| | - Peter S. Shuttleworth
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain;
| | - Ana M. García
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain; (M.F.); (A.M.G.); (D.A.M.)
| | - Diego A. Moreno
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), José Gutiérrez Abascal 2, 28006 Madrid, Spain; (M.F.); (A.M.G.); (D.A.M.)
- Facultad de Farmacia, Universidad de Castilla-La Mancha (FF-UCLM), Avda. Dr. José María Sánchez Ibañez s/n, E-02071 Albacete, Spain
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Wang W, Wang B, Tercjak A, Müller AJ, Ma Z, Cavallo D. Origin of Transcrystallinity and Nucleation Kinetics in Polybutene-1/Fiber Composites. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02038] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Wang
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genova, Italy
| | - Bao Wang
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genova, Italy
| | - Agnieszka Tercjak
- Group ‘Materials + Technologies’ (GMT), Department of Chemical and Environmental Engineering, Faculty of Engineering Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia—San Sebastian, Spain
| | - Alejandro J. Müller
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal, 3, 20018 Donostia—San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Zhe Ma
- Tianjin Key Laboratory of Composite and Functional Materials and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Dario Cavallo
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genova, Italy
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Abstract
We report interfacial crystallization in the droplets of saline solutions placed on superhydrophobic surfaces and liquid marbles filled with the saline. Evaporation of saline droplets deposited on superhydrophobic surface resulted in the formation of cup-shaped millimeter-scaled residues. The formation of the cup-like deposit is reasonably explained within the framework of the theory of the coffee-stain effect, namely, the rate of heterogeneous crystallization along the contact line of the droplet is significantly higher than in the droplet bulk. Crystallization within evaporated saline marbles coated with lycopodium particles depends strongly on the evaporation rate. Rapidly evaporated saline marbles yielded dented shells built of a mixture of colloidal particles and NaCl crystals. We relate the formation of these shells to the interfacial crystallization promoted by hydrophobic particles coating the marbles, accompanied with the upward convection flows supplying the saline to the particles, serving as the centers of interfacial crystallization. Convective flows prevail over the diffusion mass transport for the saline marbles heated from below.
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46
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Mechanical behavior of unidirectional carbon fiber-reinforced polyamide 6 composites under transverse tension and the structure of polyamide 6 among carbon fibers. Polym J 2020. [DOI: 10.1038/s41428-020-0371-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Fang H, Li Z, Wang X, Gu J, Ruan S, Shen C. Effect of shear on nucleation of carbon fiber reinforced polymer composites: Experiments and modeling. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Haidong Fang
- School of Materials Science and EngineeringDalian University of Technology Dalian China
| | - Zheng Li
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering MechanicsDalian University of Technology Dalian China
| | - Xinyu Wang
- Zhengzhou Research Institute of Dalian University of Technology Zhengzhou China
| | - Junfeng Gu
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering MechanicsDalian University of Technology Dalian China
| | - Shilun Ruan
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering MechanicsDalian University of Technology Dalian China
- Zhengzhou College of Dalian University of Technology Zhengzhou China
| | - Changyu Shen
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering MechanicsDalian University of Technology Dalian China
- School of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of EducationZhengzhou University Zhengzhou China
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Ahmed T, Ya HH, Khan R, Hidayat Syah Lubis AM, Mahadzir S. Pseudo-Ductility, Morphology and Fractography Resulting from the Synergistic Effect of CaCO 3 and Bentonite in HDPE Polymer Nano Composite. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3333. [PMID: 32726965 PMCID: PMC7435876 DOI: 10.3390/ma13153333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 06/11/2023]
Abstract
Polymeric materials such as High density polyethylene(HDPE) are ductile in nature, having very low strength. In order to improve strength by non-treated rigid fillers, polymeric materials become extremely brittle. Therefore, this work focuses on achieving pseudo-ductility (high strength and ductility) by using a combination of rigid filler particles (CaCO3 and bentonite) instead of a single non-treated rigid filler particle. The results of all tensile-tested (D638 type i) samples signify that the microstructural features and surface properties of rigid nano fillers can render the required pseudo-ductility. The maximum value of tensile strength achieved is 120% of the virgin HDPE, and the value of elongation is retained by 100%. Furthermore, the morphological and fractographic analysis revealed that surfactants are not always going to obtain polymer-filler bonding, but the synergistic effect of filler particles can carry out sufficient bonding for stress transfer. Moreover, pseudo-ductility was achieved by a combination of rigid fillers (bentonite and CaCO3) when the content of bentonite dominated as compared to CaCO3. Thus, the achievement of pseudo-ductility by the synergistic effect of rigid particles is the significance of this study. Secondly, this combination of filler particles acted as an alternative for the application of surfactant and compatibilizer so that adverse effect on mechanical properties can be avoided.
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Affiliation(s)
- Tauseef Ahmed
- Mechanical Engineering Department, Universiti Teknologi Petronas, Seri Iskandar, Perak 32610, Malaysia;
| | - Hamdan H. Ya
- Mechanical Engineering Department, Universiti Teknologi Petronas, Seri Iskandar, Perak 32610, Malaysia;
| | - Rehan Khan
- Mechanical Engineering Department, Universiti Teknologi Petronas, Seri Iskandar, Perak 32610, Malaysia;
| | | | - Shuhaimi Mahadzir
- Chemical Engineering Department, Universiti Teknologi Petronas, Seri Iskandar, Perak 32610, Malaysia;
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49
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Zhang H, Zhao S, Xin Z, Ye C, Li Z, Xia J, Li J. Mechanism of size effects of a filler on the wear behavior of ultrahigh molecular weight polyethylene. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2020.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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50
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