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Samyn P, Cosemans P. Nanocellulose Grades with Different Morphologies and Surface Modification as Additives for Waterborne Epoxy Coatings. Polymers (Basel) 2024; 16:1095. [PMID: 38675014 PMCID: PMC11054773 DOI: 10.3390/polym16081095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/05/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
While adding different micro- and nanocellulose types into epoxy coating formulations with waterborne phenalkamine crosslinker, effects on processing conditions and coating performance were systematically investigated. The variations in viscosity, thermal and thermomechanical properties, mechanical behavior, abrasive wear, water contact angles, and coating morphologies were evaluated. The selected additives include microcrystalline cellulose (MCC) at 1 to 10 wt.% and cellulose nanocrystals (CNC), cellulose nanofibers (CNF), cellulose microfibers (CMF), and hydrophobically modified cellulose microfibers (mCMF) at 0.1 to 1.5 wt.%. The viscosity profiles are determined by the inherent additive characteristics with strong shear thinning effects for epoxy/CNF, while the epoxy/mCMF provides lower viscosity and better matrix compatibility owing to the lubrication of encapsulated wax. The crosslinking of epoxy/CNF is favored and postponed for epoxy/(CNC, CMF, mCMF), as the stronger interactions between epoxy and CNF are confirmed by an increase in the glass transition temperature and reduction in the dampening factor. The mechanical properties indicate the highest hardness and impact strength for epoxy/CNF resulting in the lowest abrasion wear rates, but ductility enhances and wear rates mostly reduce for epoxy/mCMF together with hydrophobic protection. In addition, the mechanical reinforcement owing to the specific organization of a nanocellulose network at percolation threshold concentrations of 0.75 wt.% is confirmed by microscopic analysis: the latter results in a 2.6 °C (CNF) or 1.6 °C (CNC) increase in the glass transition temperature, 50% (CNF) or 20% (CNC) increase in the E modulus, 37% (CNF) or 32% (CNC) increase in hardness, and 58% (CNF) or 33% (CNC) lower abrasive wear compared to neat epoxy, while higher concentrations up to 1.5 wt.% mCMF can be added. This research significantly demonstrates that nanocellulose is directly compatible with a waterborne phenalkamine crosslinker and actively contributes to the crosslinking of waterborne epoxy coatings, changing the intrinsic glass transition temperatures and hardness properties, to which mechanical coating performance directly relates.
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Affiliation(s)
- Pieter Samyn
- Department of Innovations in Circular Economy and Renewable Materials, SIRRIS, 3001 Leuven, Belgium;
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2
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Sanaka R, Sahu SK. Experimental investigation into mechanical, thermal, and shape memory behavior of thermoresponsive PU/MXene shape memory polymer nanocomposite. Heliyon 2024; 10:e24014. [PMID: 38293526 PMCID: PMC10825426 DOI: 10.1016/j.heliyon.2024.e24014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/20/2023] [Accepted: 01/02/2024] [Indexed: 02/01/2024] Open
Abstract
This research presents an experimental investigation into the mechanical, thermal, and shape memory behavior of a thermos-responsive polyurethane (PU) reinforced with 0-1.0 wt % of MXene (Ti3C2Tx) nanofiller. The PU/MXene nanocomposites were fabricated using sonication and injection molding route. The 0.5 wt % PU/MXene nanocomposite showed the optimum mechanical properties i.e. tensile modulus, tensile strength, and hardness value, which are improved by 22, 281, and 19 %, respectively, compared to pure PU. The improvement is observed in melting temperature (Tm), the heat of melting (hm), crystallization temperature (Tc), and the heat of crystallization (hc) results. The percentage of crystallinity revealed enhancements of 6 %, 18 %, 24 %, and 34 % for 0.1, 0.2, 0.3, and 0.5 wt % PU/MXene samples respectively compared to pure PU. The findings from the shape recovery experiments demonstrated that the inclusion of MXene has no impact on both the shape fixity and shape recovery performance. The PU/MXene nanocomposite with improved mechanical and thermal properties can find potential applications in robotics actuators, medical devices, sensors, etc.
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Affiliation(s)
- Rajita Sanaka
- School of Mechanical Engineering, VIT-AP University, Besides A.P. Secretariat, Amaravati 522237, Andhra Pradesh, India
| | - Santosh Kumar Sahu
- School of Mechanical Engineering, VIT-AP University, Besides A.P. Secretariat, Amaravati 522237, Andhra Pradesh, India
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3
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Mohammad ZH, Ahmad F. Nanocoating and its application as antimicrobials in the food industry: A review. Int J Biol Macromol 2024; 254:127906. [PMID: 37935295 DOI: 10.1016/j.ijbiomac.2023.127906] [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: 07/08/2023] [Revised: 10/20/2023] [Accepted: 11/03/2023] [Indexed: 11/09/2023]
Abstract
Nanocoatings are ultra-thin layers on the nanoscale (<100 nm) that are deposited on the substrate to improve their properties and functionality. These nanocoatings provide significant advantages compared to traditional coating, including stain resistance, antimicrobial and antioxidant activities, odor control and delivery of active agents, and liquid repellence properties. In the food industry, nanocoating is widely used in the food packaging sector. In this regard, nanocoating offers antimicrobials and antioxidant properties to active food packaging by incorporating active bioactive compounds into materials used in already existing packaging. The application of nanocoating is applied to these kinds of food packaging with nano coating to improve shelf life, safety, and quality of food packaging. In smart/intelligent packaging, the active packaging coating is promising food packaging, which is designed by releasing preservatives and nanocoating as an antimicrobial, antifungal, antioxidant, barrier coating, and self-cleaning food contact surfaces. In addition, nanocoating can be used for food contact surfaces, kitchen utensils, and food processing equipment to create antimicrobial, antireflective, and dirt-repellent properties. These are critical properties for food processing, especially for meat and dairy processing facilities, which can reduce biofilm formation and prevent cross-contamination. Recently, appreciable growth in the development of the application of nanocoating as edible films for coating food products has emerged to improve food safety issues. In this regard, much scientific research in the area of nanocoating fruits and vegetables, and other food products was performed to address food safety issues. Hence, this promising technology can be a great addition to the agricultural and food industries. Thus, this review addresses the most relevant information about this technology and the applications of nanocoating in the food industry.
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Affiliation(s)
- Zahra H Mohammad
- Conrad N. Hilton College of Hotel and Restaurant Management, University of Houston, Houston, TX 77204-3028, USA
| | - Faizan Ahmad
- Post Harvest Engineering and Technology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, UP, India.
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4
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Sarma S, Rao VR. Emerging synthesis and characterization techniques for hybrid polymer nanocomposites. NANOTECHNOLOGY 2023; 35:012002. [PMID: 37783203 DOI: 10.1088/1361-6528/acfef8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/02/2023] [Indexed: 10/04/2023]
Abstract
Metallic nanoparticles and carbon nanotubes are two of the most promising nanomaterials, due to their distinctive properties occurring from spatial confinement of electron-hole pairs. The unique combination of metallic nanoparticles and carbon nanotubes (CNTs) in a polymer matrix offers unparalleled advantages, making them highly desirable in various fields. Advanced methods and techniques for synthesizing and characterizing hybrid metal-CNT-polymer nanocomposites have undergone significant progress in recent years, paving their integration into various fields, including aerospace, electronics, energy, water treatment and environmental remediation. These advances have allowed better understanding of nanocomposite properties and imparted ability to tune specific properties through size, shape, and distribution control of the nanofillers within the matrix material or by altering filler properties through functionalization. This study aims to critically judge the emerging tools, techniques and methods used in polymer nanocomposites with specific focus on metal-CNT based hybrid polymer nanocomposites, and suggest new avenues for research in the field. Furthermore, by examining the mechanisms affecting the performance of these composites, we can understand how the inclusion of fillers alters the microstructure and overall behavior of the material. Ultimately, this knowledge could lay the foundation for the development of novel nanocomposites with tailored properties and enhanced performance in a plethora of applications.
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Affiliation(s)
- Shrutidhara Sarma
- Department of Mechanical Engineering, Indian Institute of Technology Jodhpur, Rajasthan 342037, India
| | - V Ramgopal Rao
- Department of Electrical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
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5
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Experimental data and development of Weibull distribution model for relative dynamic modulus profile of PMMA/TiO2 polymer nanocomposites. INTERNATIONAL NANO LETTERS 2023. [DOI: 10.1007/s40089-023-00400-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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6
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Naguib HM. Recycled polyester filled with eggshells waste-based nano CaCO 3: thermo-mechanical and flame-retardant features. NEW J CHEM 2023. [DOI: 10.1039/d3nj00538k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Improved environmental-friendly fire-retardant nanocomposite.
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Affiliation(s)
- Hamdy M. Naguib
- Department of Petroleum Applications, Egyptian Petroleum Research Institute (EPRI), Nasr City 11727, Cairo, Egypt
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, Jiangsu Province, China
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7
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Kavlak S. Preparation and Properties of Nanoclay Reinforced High‐Performance Functional Poly(Itaconic Anhydride‐
co
‐Acrylamide) Nanomaterials. ChemistrySelect 2022. [DOI: 10.1002/slct.202202463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Serap Kavlak
- Division of Polymer Chemistry Department of Chemistry Hacettepe University 06800 Ankara Turkey
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Rezvova MA, Nikishau PA, Makarevich MI, Glushkova TV, Klyshnikov KY, Akentieva TN, Efimova OS, Nikitin AP, Malysheva VY, Matveeva VG, Senokosova EA, Khanova MY, Danilov VV, Russakov DM, Ismagilov ZR, Kostjuk SV, Ovcharenko EA. Biomaterials Based on Carbon Nanotube Nanocomposites of Poly(styrene- b-isobutylene- b-styrene): The Effect of Nanotube Content on the Mechanical Properties, Biocompatibility and Hemocompatibility. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:733. [PMID: 35269222 PMCID: PMC8911977 DOI: 10.3390/nano12050733] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/18/2022] [Accepted: 02/19/2022] [Indexed: 01/27/2023]
Abstract
Nanocomposites based on poly(styrene-block-isobutylene-block-styrene) (SIBS) and single-walled carbon nanotubes (CNTs) were prepared and characterized in terms of tensile strength as well as bio- and hemocompatibility. It was shown that modification of CNTs using dodecylamine (DDA), featured by a long non-polar alkane chain, provided much better dispersion of nanotubes in SIBS as compared to unmodified CNTs. As a result of such modification, the tensile strength of the nanocomposite based on SIBS with low molecular weight (Mn = 40,000 g mol-1) containing 4% of functionalized CNTs was increased up to 5.51 ± 0.50 MPa in comparison with composites with unmodified CNTs (3.81 ± 0.11 MPa). However, the addition of CNTs had no significant effect on SIBS with high molecular weight (Mn~70,000 g mol-1) with ultimate tensile stress of pure polymer of 11.62 MPa and 14.45 MPa in case of its modification with 1 wt% of CNT-DDA. Enhanced biocompatibility of nanocomposites as compared to neat SIBS has been demonstrated in experiment with EA.hy 926 cells. However, the platelet aggregation observed at high CNT concentrations can cause thrombosis. Therefore, SIBS with higher molecular weight (Mn~70,000 g mol-1) reinforced by 1-2 wt% of CNTs is the most promising material for the development of cardiovascular implants such as heart valve prostheses.
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Affiliation(s)
- Maria A. Rezvova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia; (T.V.G.); (K.Y.K.); (T.N.A.); (V.G.M.); (E.A.S.); (M.Y.K.); (E.A.O.)
| | - Pavel A. Nikishau
- Research Institute for Physical Chemical Problems, Belarusian State University, 220006 Minsk, Belarus; (P.A.N.); (M.I.M.); (S.V.K.)
| | - Miraslau I. Makarevich
- Research Institute for Physical Chemical Problems, Belarusian State University, 220006 Minsk, Belarus; (P.A.N.); (M.I.M.); (S.V.K.)
- Department of Chemistry, Belarusian State University, 220006 Minsk, Belarus
| | - Tatiana V. Glushkova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia; (T.V.G.); (K.Y.K.); (T.N.A.); (V.G.M.); (E.A.S.); (M.Y.K.); (E.A.O.)
| | - Kirill Yu. Klyshnikov
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia; (T.V.G.); (K.Y.K.); (T.N.A.); (V.G.M.); (E.A.S.); (M.Y.K.); (E.A.O.)
| | - Tatiana N. Akentieva
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia; (T.V.G.); (K.Y.K.); (T.N.A.); (V.G.M.); (E.A.S.); (M.Y.K.); (E.A.O.)
| | - Olga S. Efimova
- Institute of Coal Chemistry and Material Science, Federal Research Center of Coal and Coal Chemistry SB RAS, 650000 Kemerovo, Russia; (O.S.E.); (A.P.N.); (V.Y.M.); (Z.R.I.)
| | - Andrey P. Nikitin
- Institute of Coal Chemistry and Material Science, Federal Research Center of Coal and Coal Chemistry SB RAS, 650000 Kemerovo, Russia; (O.S.E.); (A.P.N.); (V.Y.M.); (Z.R.I.)
| | - Valentina Yu. Malysheva
- Institute of Coal Chemistry and Material Science, Federal Research Center of Coal and Coal Chemistry SB RAS, 650000 Kemerovo, Russia; (O.S.E.); (A.P.N.); (V.Y.M.); (Z.R.I.)
| | - Vera G. Matveeva
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia; (T.V.G.); (K.Y.K.); (T.N.A.); (V.G.M.); (E.A.S.); (M.Y.K.); (E.A.O.)
| | - Evgeniia A. Senokosova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia; (T.V.G.); (K.Y.K.); (T.N.A.); (V.G.M.); (E.A.S.); (M.Y.K.); (E.A.O.)
| | - Mariam Yu. Khanova
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia; (T.V.G.); (K.Y.K.); (T.N.A.); (V.G.M.); (E.A.S.); (M.Y.K.); (E.A.O.)
| | - Viacheslav V. Danilov
- Research Laboratory for Processing and Analysis of Big Data, Tomsk Polytechnic University, 634050 Tomsk, Russia;
| | - Dmitry M. Russakov
- Institute of Fundamental Sciences, Kemerovo State University, 650000 Kemerovo, Russia;
| | - Zinfer R. Ismagilov
- Institute of Coal Chemistry and Material Science, Federal Research Center of Coal and Coal Chemistry SB RAS, 650000 Kemerovo, Russia; (O.S.E.); (A.P.N.); (V.Y.M.); (Z.R.I.)
| | - Sergei V. Kostjuk
- Research Institute for Physical Chemical Problems, Belarusian State University, 220006 Minsk, Belarus; (P.A.N.); (M.I.M.); (S.V.K.)
- Department of Chemistry, Belarusian State University, 220006 Minsk, Belarus
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
| | - Evgeny A. Ovcharenko
- Department of Experimental Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia; (T.V.G.); (K.Y.K.); (T.N.A.); (V.G.M.); (E.A.S.); (M.Y.K.); (E.A.O.)
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Chitosan/Alginate Nanoparticles for the Enhanced Oral Antithrombotic Activity of Clam Heparinoid from the Clam Coelomactra antiquata. Mar Drugs 2022; 20:md20020136. [PMID: 35200665 PMCID: PMC8879524 DOI: 10.3390/md20020136] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/06/2022] [Accepted: 02/10/2022] [Indexed: 02/01/2023] Open
Abstract
Chitosan/alginate nanoparticles (DG1-NPs and DG1/Cur-NPs) aiming to enhance the oral antithrombotic activity of clam heparinoid DG1 were prepared by ionotropic pre-gelation. The influence of parameters, such as the concentration of sodium alginate (SA), chitosan (CTS), CaCl2, clam heparinoid DG1, and curcumin (Cur), on the characteristics of the nanoparticles, were investigated. Results indicate that chitosan and alginate can be used as polymer matrices to encapsulate DG1, and nanoparticle characteristics depend on the preparation parameters. Nano-particles should be prepared using 0.6 mg/mL SA, 0.33 mg/mL CaCl2, 0.6 mg/mL CTS, 7.2 mg/mL DG1, and 0.24 mg/mL Cur under vigorous stirring to produce DG1-NPS and DG1/Cur-NPS with small size, high encapsulation efficiency, high loading capacity, and negative zeta potential from approximately −20 to 30 mV. Data from scanning electron microscopy, Fourier-transform infrared spectrometry, and differential scanning calorimetry analyses showed no chemical reaction between DG1, Cur, and the polymers; only physical mixing. Moreover, the drug was loaded in the amorphous phase within the nanoparticle matrix. In the acute pulmonary embolism murine model, DG1-NPs enhanced the oral antithrombotic activity of DG1, but DG1/Cur-NPs did not exhibit higher antithrombotic activity than DG1-NPs. Therefore, the chitosan/alginate nanoparticles enhanced the oral antithrombotic activity of DG1, but curcumin did not further enhance this effect.
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10
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Kavlak S. In situ interlamellar production of amide-based functional copolymer/clay nanocomposites. NEW J CHEM 2022. [DOI: 10.1039/d1nj05718a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Novel functional copolymer/clay nanocomposites with active sites such as amide and anhydride groups were successfully produced by in situ interlamellar copolymerization.
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Affiliation(s)
- Serap Kavlak
- Hacettepe University, Faculty of Science, Department of Chemistry, Division of Polymer Chemistry, 06800 Beytepe, Ankara, Turkey
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11
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Salim A, Ghoshal S, Bakhtiar H. Prominent absorption and luminescence characteristics of novel silver-cinnamon core-shell nanoparticles prepared in ethanol using PLAL method. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2021.109794] [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]
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12
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Balasubramaniam B, Arun Kumar S, Singh KA, Bhunia S, Verma K, Tian L, Gupta RK, Gaharwar AK. Electrically Conductive MoS
2
Reinforced Polyacrylonitrile Nanofibers for Biomedical Applications. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
| | - Shreedevi Arun Kumar
- Biomedical Engineering Dwight Look College of Engineering Texas A&M University College Station TX 77843 USA
| | - Kanwar Abhay Singh
- Biomedical Engineering Dwight Look College of Engineering Texas A&M University College Station TX 77843 USA
| | - Sukanya Bhunia
- Biomedical Engineering Dwight Look College of Engineering Texas A&M University College Station TX 77843 USA
| | - Kartikey Verma
- Department of Chemical Engineering Indian Institute of Technology Kanpur Uttar Pradesh 208016 India
| | - Limei Tian
- Biomedical Engineering Dwight Look College of Engineering Texas A&M University College Station TX 77843 USA
- Center for Remote Health Technologies and Systems Texas A&M University College Station TX 77843 USA
| | - Raju Kumar Gupta
- Department of Chemical Engineering Indian Institute of Technology Kanpur Uttar Pradesh 208016 India
- Center for Environmental Science and Engineering Indian Institute of Technology Kanpur Kanpur Uttar Pradesh 208016 India
| | - Akhilesh K. Gaharwar
- Biomedical Engineering Dwight Look College of Engineering Texas A&M University College Station TX 77843 USA
- Genetics and Genomics Texas A&M University College Station TX 77843 USA
- Center for Remote Health Technologies and Systems Texas A&M University College Station TX 77843 USA
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13
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Effect of carbon nanotubes loading and pressure on the performance of a polyethersulfone (PES)/carbon nanotubes (CNT) membrane. Sci Rep 2021; 11:23805. [PMID: 34893653 PMCID: PMC8664952 DOI: 10.1038/s41598-021-03042-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 11/18/2021] [Indexed: 11/09/2022] Open
Abstract
This paper focuses on modifying a PES membrane with acid-functionalised carbon nanotubes (CNT) for industrial wastewater treatment. Embedding acid functionalised carbon nanotubes (CNTs) within the membrane matrix would increase the membrane flux by increasing the membrane pore size and surface area, rejection and thermal stability. Pure PES membranes were prepared by phase inversion method and infused with CNTs at 2.5, 5, 7.5 and 10 wt% loading to fabricate PES/2.5 wt% CNT, PES/5 wt% CNT, PES/7.5 wt% CNT and PES/10 wt% CNT membranes respectively. Characterisation was performed using Transmission Electron Microscopy (TEM) to determine CNT morphology, X-ray Diffraction (XRD) to determine the functional groups attached to CNTs, Thermogravimetric Analysis (TGA) to determine the thermal stability of the membranes, Scanning Electron Microscope (SEM) to determine membrane morphology, Bunauer-Emmett-Teller (BET) method to obtain pore size information and Contact Angle (CA) to determine the membrane hydrophilicity. Membrane performance was then evaluated with a dead-end stirred cell using industrial wastewater containing traces of Cu, Fe, Ni, Zn and Cl. Permeate flux results showed a direct proportion relationship with increasing CNT loading and increasing pressure (100 kPa, 300 kPa, 500 kPa, 700 kPa, 900 kPa and 1100 kPa). PES/5 wt% CNT membrane showed the most enhanced performance compared to the other membranes, achieving reasonably high flux of 43.7 L/m2h and rejection of 89.6% Cu, 100% Fe, 90.5% Ni, 68.8% Zn and 99.99% Cl at 300 kPa. The results obtained showed that the PES membrane embedded with functionalised CNTs could be used for the treatment of industrial wastewater.
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Bicy K, Rouxel D, Poncot M, Royaud I, Bourson P, Chapron D, Kalarikkal N, Thomas S. Interfacial tuning and designer morphologies of microporous membranes based on polypropylene/natural rubber nanocomposites. J Appl Polym Sci 2021. [DOI: 10.1002/app.51208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kottathodi Bicy
- International and Inter University Center for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
- Institut Jean Lamour Université de Lorraine Nancy France
| | - Didier Rouxel
- Institut Jean Lamour Université de Lorraine Nancy France
| | - Marc Poncot
- Institut Jean Lamour Université de Lorraine Nancy France
| | | | - Patrice Bourson
- LMOPS/Centrale Supelec EA 4423 Université de Lorraine Nancy France
| | - David Chapron
- LMOPS/Centrale Supelec EA 4423 Université de Lorraine Nancy France
| | - Nandakumar Kalarikkal
- International and Inter University Center for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
- School of Pure and Applied Physics Mahatma Gandhi University Kottayam India
| | - Sabu Thomas
- International and Inter University Center for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
- Institut Jean Lamour Université de Lorraine Nancy France
- School of Energy Materials Mahatma Gandhi University Kottayam India
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15
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Gültekin K, Uğuz G, Topcu Y, Özel A. Structural, thermal, and mechanical properties of silanized boron carbide doped epoxy nanocomposites. J Appl Polym Sci 2021. [DOI: 10.1002/app.51244] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Kürşat Gültekin
- Department of Mechanical Engineering Ondokuz Mayıs University Samsun Turkey
| | - Gediz Uğuz
- Department of Chemical Engineering Ondokuz Mayıs University Samsun Turkey
| | - Yıldıray Topcu
- Department of Chemical Engineering Ondokuz Mayıs University Samsun Turkey
| | - Adnan Özel
- Department of Mechanical Engineering Erzincan Binali Yıldırım University Erzincan Turkey
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16
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Properties and Interfacial Bonding Enhancement of Oil Palm Bio-Ash Nanoparticles Biocomposites. Polymers (Basel) 2021; 13:polym13101615. [PMID: 34067604 PMCID: PMC8155993 DOI: 10.3390/polym13101615] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/07/2021] [Accepted: 05/08/2021] [Indexed: 11/29/2022] Open
Abstract
The effect of incorporating different loadings of oil palm bio-ash nanoparticles from agriculture waste on the properties of phenol-formaldehyde resin was investigated in this study. The bio-ash filler was used to enhance the performance of phenol-formaldehyde nanocomposites. Phenol-formaldehyde resin filled with oil palm bio-ash nanoparticles was prepared via the in-situ polymerization process to produce nanocomposites. The transmission electron microscope and particle size analyzer result revealed that oil palm bio-ash nanoparticles had a spherical geometry of 90 nm. Furthermore, X-ray diffraction results confirmed the formation of crystalline structure in oil palm bio-ash nanoparticles and phenol-formaldehyde nanocomposites. The thermogravimetric analysis indicated that the presence of oil palm bio-ash nanoparticles enhanced the thermal stability of the nanocomposites. The presence of oil palm bio-ash nanoparticles with 1% loading in phenol-formaldehyde resin enhanced the internal bonding strength of plywood composites. The scanning electron microscope image revealed that phenol-formaldehyde nanocomposites morphology had better uniform distribution and dispersion with 1% oil palm bio-ash nanoparticle loading than other phenol-formaldehyde nanocomposites produced. The nanocomposite has potential use in the development of particle and panel board for industrial applications.
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17
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Pathak AK, Dhakate SR. Validation of experimental results for graphene
oxide‐epoxy
polymer nanocomposite through computational analysis. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200442] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Abhishek K. Pathak
- Advanced Carbon Products and Metrology Section, Advanced Materials and Device Metrology Division CSIR‐National Physical Laboratory, Dr. K.S. Krishnan Marg New Delhi India
- Academy of Scientific Innovation and Research (AcSIR) Ghaziabad Uttar Pradesh India
| | - Sanjay R. Dhakate
- Advanced Carbon Products and Metrology Section, Advanced Materials and Device Metrology Division CSIR‐National Physical Laboratory, Dr. K.S. Krishnan Marg New Delhi India
- Academy of Scientific Innovation and Research (AcSIR) Ghaziabad Uttar Pradesh India
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Garavand F, Cacciotti I, Vahedikia N, Rehman A, Tarhan Ö, Akbari-Alavijeh S, Shaddel R, Rashidinejad A, Nejatian M, Jafarzadeh S, Azizi-Lalabadi M, Khoshnoudi-Nia S, Jafari SM. A comprehensive review on the nanocomposites loaded with chitosan nanoparticles for food packaging. Crit Rev Food Sci Nutr 2020; 62:1383-1416. [DOI: 10.1080/10408398.2020.1843133] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Farhad Garavand
- Department of Food Chemistry and Technology, Teagasc Food Research Centre, Cork, Ireland
| | - Ilaria Cacciotti
- Department of Engineering, INSTM RU, University of Rome “Niccolò Cusano”, Roma, Italy
| | - Nooshin Vahedikia
- Department of Food Technology, Institute of Chemical Technologies, Iranian Research Organization for Science & Technology (IROST), Tehran, Iran
| | - Abdur Rehman
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Özgür Tarhan
- Department of Food Engineering, Engineering Faculty, Uşak University, Uşak, Turkey
| | - Safoura Akbari-Alavijeh
- Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Rezvan Shaddel
- Department of Food Science and Technology, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Ali Rashidinejad
- Riddet Institute Centre of Research Excellence, Massey University, Palmerston North, New Zealand
| | - Mohammad Nejatian
- Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Research Center for Environmental Determinants of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shima Jafarzadeh
- School of Industrial Technology, Universiti Sains Malaysia, Penang, Malaysia
| | - Maryam Azizi-Lalabadi
- Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Research Center for Environmental Determinants of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sara Khoshnoudi-Nia
- Seafood Processing Research Group, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Seid Mahdi Jafari
- Department of Food Materials and Process Design Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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Machado I, Hsieh I, Calado V, Chapin T, Ishida H. Nacre-Mimetic Green Flame Retardant: Ultra-High Nanofiller Content, Thin Nanocomposite as an Effective Flame Retardant. Polymers (Basel) 2020; 12:E2351. [PMID: 33066458 PMCID: PMC7602158 DOI: 10.3390/polym12102351] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/06/2020] [Accepted: 10/09/2020] [Indexed: 02/04/2023] Open
Abstract
A nacre-mimetic brick-and-mortar structure was used to develop a new flame-retardant technology. A second biomimetic approach was utilized to develop a non-flammable elastomeric benzoxazine for use as a polymer matrix that effectively adheres to the hydrophilic laponite nanofiller. A combination of laponite and benzoxazine is used to apply an ultra-high nanofiller content, thin nanocomposite coating on a polyurethane foam. The technology used is made environmentally friendly by eliminating the need to add any undesirable flame retardants, such as phosphorus additives or halogenated compounds. The very-thin coating on the polyurethane foam (PUF) is obtained through a single dip-coating. The structure of the polymer has been confirmed by proton nuclear magnetic resonance spectroscopy (1H NMR) and Fourier transform infrared spectroscopy (FTIR). The flammability of the polymer and nanocomposite was evaluated by heat release capacity using microscale combustion calorimetry (MCC). A material with heat release capacity (HRC) lower than 100 J/Kg is considered non-ignitable. The nanocomposite developed exhibits HRC of 22 J/Kg, which is well within the classification of a non-ignitable material. The cone calorimeter test was also used to investigate the flame retardancy of the nanocomposite's thin film on polyurethane foam. This test confirms that the second peak of the heat release rate (HRR) decreased 62% or completely disappeared for the coated PUF with different loadings. Compression tests show an increase in the modulus of the PUF by 88% for the 4 wt% coating concentration. Upon repeated modulus tests, the rigidity decreases, approaching the modulus of the uncoated PUF. However, the effect of this repeated mechanical loading does not significantly affect the flame retarding performance.
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Affiliation(s)
- Irlaine Machado
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-7202, USA;
| | - Isabel Hsieh
- Hathaway Brown School, Shaker Heights, OH 44122, USA;
| | - Veronica Calado
- School of Chemistry, Universidade Federal do Rio de Janeiro, Rua Horácio Macedo 2030, Cidade Universitária, Rio de Janeiro, RJ 21941-909, Brazil;
| | - Thomas Chapin
- Underwriters Laboratories Inc. (UL), 2500 Dundee Rd., Northbrook, IL 60062S, USA;
| | - Hatsuo Ishida
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-7202, USA;
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Ghazal S, Akbari A, Hosseini HA, Sabouri Z, Forouzanfar F, Khatami M, Darroudi M. Sol-gel biosynthesis of nickel oxide nanoparticles using Cydonia oblonga extract and evaluation of their cytotoxicity and photocatalytic activities. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128378] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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21
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Kaiser S, Jandl J, Novak P, Schlögl S. Design and characterisation of vitrimer-like elastomeric composites from HXNBR rubber. SOFT MATTER 2020; 16:8577-8590. [PMID: 32766610 DOI: 10.1039/d0sm00362j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The present study aims at the incorporation of vitrimer-like properties into elastomeric composites as a promising approach towards the sustainable production of rubber-based materials. In particular, hydrogenated carboxylated nitrile butadiene rubber (HXNBR), as a technically relevant high-performance rubber, is covalently cross-linked with epoxy group-functionalised calcium silicate (Esilicate) across its pending carboxylic acid moieties. Reaction with the reactive functions attached on the filler surface results in the formation of β-hydroxyl ester linkages at the HXNBR-Esilicate interface, which undergo thermo-activated transesterifications in the presence of a suitable catalyst. Topology rearrangements in the composites are confirmed by stress relaxation measurements at elevated temperatures. Comparison with an unfilled reference network reveals that the extent of stress relaxation can be mostly maintained upon the addition of the reactive filler even at large quantities. The Esilicate serves as both cross-linker and reinforcing filler, leading to a significant enhancement of the mechanical properties.
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Affiliation(s)
- Simon Kaiser
- Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, A-8700 Leoben, Austria.
| | - Julius Jandl
- Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, A-8700 Leoben, Austria.
| | - Patrick Novak
- Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, A-8700 Leoben, Austria.
| | - Sandra Schlögl
- Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, A-8700 Leoben, Austria.
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Palanisamy CP, Cui B, Zhang H, Jayaraman S, Kodiveri Muthukaliannan G. A Comprehensive Review on Corn Starch-Based Nanomaterials: Properties, Simulations, and Applications. Polymers (Basel) 2020; 12:polym12092161. [PMID: 32971849 PMCID: PMC7570270 DOI: 10.3390/polym12092161] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/08/2020] [Accepted: 09/11/2020] [Indexed: 12/13/2022] Open
Abstract
Corn (Zea mays L.) is one of the major food crops, and it is considered to be a very distinctive plant, since it is able to produce a large amount of the natural polymer of starch through its capacity to utilize large amounts of sunlight. Corn starch is used in a wide range of products and applications. In recent years, the use of nanotechnology for applications in the food industry has become more apparent; it has been used for protecting against biological and chemical deterioration, increasing bioavailability, and enhancing physical properties, among other functions. However, the high cost of nanotechnology can make it difficult for its application on a commercial scale. As a biodegradable natural polymer, corn starch is a great alternative for the production of nanomaterials. Therefore, the search for alternative materials to be used in nanotechnology has been studied. This review has discussed in detail the properties, simulations, and wide range of applications of corn starch-based nanomaterials.
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Affiliation(s)
- Chella Perumal Palanisamy
- State Key Laboratory of Biobased Material and Green Papermaking, College of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Science, Jinan 250353, China; (C.P.P.); (H.Z.)
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, College of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Science, Jinan 250353, China; (C.P.P.); (H.Z.)
- Correspondence: ; Tel.: +86-186-60811718
| | - Hongxia Zhang
- State Key Laboratory of Biobased Material and Green Papermaking, College of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Science, Jinan 250353, China; (C.P.P.); (H.Z.)
| | - Selvaraj Jayaraman
- Department of Biochemistry, Saveetha University, Chennai, Tamil Nadu 600077, India;
| | - Gothandam Kodiveri Muthukaliannan
- Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India;
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Bélaid ZH, Ben Mansour S, Boroguiaa D, Boubris A, Benhabib L, Benkhaled FZ, Mechernene L. Electro-Optical and Thermophysical Characterization of Poly (Tripropylene Glycol Di-Acrylate)/Liquid Crystal Composite Materials Prepared by Polymerization Induced Phase Separation. J MACROMOL SCI B 2020. [DOI: 10.1080/00222348.2020.1796013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Z. Hadjou Bélaid
- Laboratoire de Recherche sur les Macromolécules, Département de Physique, Faculté des Sciences, Université de Tlemcen, Tlemcen, Algérie
| | - S. Ben Mansour
- Laboratoire de Recherche sur les Macromolécules, Département de Physique, Faculté des Sciences, Université de Tlemcen, Tlemcen, Algérie
| | - D. Boroguiaa
- Laboratoire de Recherche sur les Macromolécules, Département de Physique, Faculté des Sciences, Université de Tlemcen, Tlemcen, Algérie
| | - A. Boubris
- Laboratoire de Recherche sur les Macromolécules, Département de Physique, Faculté des Sciences, Université de Tlemcen, Tlemcen, Algérie
| | - L. Benhabib
- Materials and Renewable Energy Research Unit, Abu Bakar Belkaid University of Tlemcen, Algeria
| | - F. Z. Benkhaled
- Laboratoire de Recherche sur les Macromolécules, Département de Physique, Faculté des Sciences, Université de Tlemcen, Tlemcen, Algérie
| | - L. Mechernene
- Laboratoire de Recherche sur les Macromolécules, Département de Physique, Faculté des Sciences, Université de Tlemcen, Tlemcen, Algérie
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Gurgenc T, Biryan F. Production, thermal and dielectrical properties of Ag-doped nano-strontium apatite and nano h-BN filled poly(4-(3-(2,3,4-trimethoxyphenyl) acryloyl) phenyl acrylate) composites. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02166-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Mechanical and Thermal Properties of Self-Assembled Kaolin-Doped Starch-Based Environment-Friendly Nanocomposite Films. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4020038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Environment-friendly advanced materials are promising candidates for the engineering of nanoscience and nanotechnology. Here, starch–kaolin self-assembled nanocomposite films were prepared using potato starch and an indigenous layered material, kaolin. The films consist of kaolin and the matrix, which were prepared by the disruption and plasticization of starch granules with water and glycerol. Self-assembled nanocomposite films with 0%, 5%, 10%, 15%, and 20% w/w of kaolin were fabricated by casting and evaporating the mixture from homogeneous aqueous suspension at 95 °C. The thickness of the film—about 200 μm—was controlled by a predesigned glass frame. The resulting films were conditioned before testing, and the effect of accelerated aging in a moist atmosphere was investigated. The films were characterized using attenuated total reflection infrared (ATR-IR) spectroscopy for the interaction of moieties via function groups, X-ray diffraction (XRD) for crystallinity change, universal testing machine (UTM) for tensile strength Young’s modulus and elongation at break investigation. The thermal stability of the films using thermogravimetric analysis (TGA) and the effect of temperature on contraction behaviors using thermal mechanical analysis (TMA) were carried out. The distribution of kaolin into the matrix and morphology of the self-assembled nanocomposite films were observed from scanning electron microscopy (SEM) images. Developed nanocomposite materials from an indigenous source would play a vital role in the field of food packaging industries in Bangladesh.
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Moni G, Mayeen A, Abraham J, Jose T, M G M, Bhowmik R, George SC. Flexible FKM/mRGO nanocomposites with excellent thermal, mechanical and electrical properties. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.03.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Niaz T, Shabbir S, Noor T, Imran M. Antimicrobial and antibiofilm potential of bacteriocin loaded nano-vesicles functionalized with rhamnolipids against foodborne pathogens. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.108583] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Bio-based synthesized NiO nanoparticles and evaluation of their cellular toxicity and wastewater treatment effects. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.075] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Chouytan J, Kalkornsurapranee E, Fellows CM, Kaewsakul W. In Situ Modification of Polyisoprene by Organo-Nanoclay during Emulsion Polymerization for Reinforcing Natural Rubber Thin Films. Polymers (Basel) 2019; 11:polym11081338. [PMID: 31409053 PMCID: PMC6723953 DOI: 10.3390/polym11081338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/06/2019] [Accepted: 08/07/2019] [Indexed: 11/30/2022] Open
Abstract
Nanoclay-modified polyisoprene latexes were prepared and then used as a reinforcing component in natural rubber (NR) thin films. Starve-fed emulsion (SFE) polymerization gives a higher conversion than the batch emulsion (BE), while the gel and coagulation contents from both systems are comparable. This is attributed to the SFE that provides a smaller average polymer particle size which in turn results in a greater polymerization locus, promoting the reaction rate. The addition of organo-nanoclay during synthesizing polyisoprene significantly lessens the polymerization efficiency because the nanoclay has a potential to suppress nucleation process of the reaction. It also intervenes the stabilizing efficiency of the surfactant—SDS or sodium dodecyl sulfate, giving enlarged average sizes of the polymer particles suspended in the latexes. TEM images show that nanoclay particles are attached on and/or inserted in the polymer particles. XRD and thermal (differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)) analyses were employed to assess the d-spacing of nanoclay structure in NR nanocomposite films, respectively. Based on the overall results, 5 wt% of nanoclay relative to the monomer content utilized to alter the polyisoprene during emulsion polymerization is an optimum amount since the silicate plates of nanoclay in the composite exhibit the largest d-spacing which maximizes the extent of immobilized polymer constituent, giving the highest mechanical properties to the films. The excessive amounts of nanoclay used, i.e., 7 and 10 wt% relative to the monomer content, reduce the reinforcing power because of the re-agglomeration effect.
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Affiliation(s)
- Jadsadaporn Chouytan
- Department of Materials Science and Technology, Faculty of Science, Prince of Songkla University, Hat Yai Campus, Songkhla 90110, Thailand
| | - Ekwipoo Kalkornsurapranee
- Department of Materials Science and Technology, Faculty of Science, Prince of Songkla University, Hat Yai Campus, Songkhla 90110, Thailand
| | - Christopher M Fellows
- School of Science and Technology, University of New England, Armidale, NSW 2351, Australia.
| | - Wisut Kaewsakul
- Department of Materials Science and Technology, Faculty of Science, Prince of Songkla University, Hat Yai Campus, Songkhla 90110, Thailand.
- Elastomer Technology and Engineering, Department of Mechanics of Solids, Surfaces and Systems, Faculty of Engineering Technology, University of Twente, 7522 NB Enschede, The Netherlands.
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Miranda MA, Marcato PD, Carvalho IPS, Silva LB, Ribeiro DL, Amaral R, Swiech K, Bastos JK, Paschoal JAR, Dos Reis RB, Bentley MVLB. Assessing the cytotoxic potential of glycoalkaloidic extract in nanoparticles against bladder cancer cells. ACTA ACUST UNITED AC 2019; 71:1520-1531. [PMID: 31385306 DOI: 10.1111/jphp.13145] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 06/30/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE This study proposed to use the nanotechnology to deliver glycoalkaloidic extract (AE) to bladder cancer cells, evaluating their activity in 2D and 3D models and the biological mechanism of cell death. METHODS NPs were prepared by nanoprecipitation method using polylactic acid (PLA) and characterized considering their size, charge, particle concentration and stability. The cytotoxicity was evaluated in 2D and 3D model, and the apoptosis and cell cycle were investigated using flow cytometry. KEY FINDINGS NPs loading AE (NP-AE) had diameter around 125 ± 6 nm (PdI <0.1) and negative charge. The encapsulation efficiency of SM and SS was higher than 85% for both compounds. The obtained formulation showed a significant in-vitro cytotoxic effect against RT4 cells in a dose-dependent manner with IC50 two fold lower than the free AE. The cytotoxic effect of NP-AE was mediated by apoptosis and cell cycle arrested in the S phase. RT4 cells cultured under 3D conditions exhibited a higher resistance to the treatments (IC50 ~ three fold higher than in 2D cell culture). CONCLUSION The NP-AE might be a promising nanocarrier to load and deliver glycoalkaloids against bladder cancer.
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Affiliation(s)
- Mariza A Miranda
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Priscyla D Marcato
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Ivana P S Carvalho
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Letícia B Silva
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Diego L Ribeiro
- Division of Urology, Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Robson Amaral
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Kamilla Swiech
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Jairo K Bastos
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Jonas A R Paschoal
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Rodolfo B Dos Reis
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Maria V L B Bentley
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Mazumdar P, Rattan S, Singhal P, Sharma I, Gupta BK. A Green Route Strategy for the Synthesis of Multifunctional Polymer Nanocomposites for Environmental Sustainability. ChemistrySelect 2019. [DOI: 10.1002/slct.201803834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Payal Mazumdar
- Department of Chemistry; Amity Institute of Applied Sciences; Amity University, Uttar Pradesh; India
| | - Sunita Rattan
- Department of Chemistry; Amity Institute of Applied Sciences; Amity University, Uttar Pradesh; India
| | - Prachi Singhal
- Department of Chemistry; Amity Institute of Applied Sciences; Amity University, Uttar Pradesh; India
| | - Indu Sharma
- Photonic Materials and Metrology; Advanced Materials and Devices Metrology Division; CSIR - National Physical Laboratory, New Delhi; India
| | - Bipin K. Gupta
- Photonic Materials and Metrology; Advanced Materials and Devices Metrology Division; CSIR - National Physical Laboratory, New Delhi; India
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Pathak AK, Garg H, Singh M, Yokozeki T, Dhakate SR. Enhanced interfacial properties of graphene oxide incorporated carbon fiber reinforced epoxy nanocomposite: a systematic thermal properties investigation. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-018-1668-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ionic liquid functionalised reduced graphene oxide fluoroelastomer nanocomposites with enhanced mechanical, dielectric and viscoelastic properties. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.09.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Marín-Silva DA, Rivero S, Pinotti A. Chitosan-based nanocomposite matrices: Development and characterization. Int J Biol Macromol 2018; 123:189-200. [PMID: 30414906 DOI: 10.1016/j.ijbiomac.2018.11.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/11/2018] [Accepted: 11/07/2018] [Indexed: 11/16/2022]
Abstract
Chitosan-based nanocomposites have a significant industrial impact related to the possibility to design and create new materials and structures. Cellulose nanocrystals (CNC) can be extracted from microcrystalline cellulose (MCC) by controlled acid hydrolysis with H2SO4. This work was focused on: to study the microstructure of CNC isolated from MCC after different hydrolysis times; to develop nanocomposites chitosan-based films; to characterize their structural and thermo-mechanical properties; to analyze the spectral differences among samples by means of ATR-FTIR in combination with principal component analysis (PCA) and square partial minimums model (PLS). It is worth noting that the selected condition for isolate the CNC from MCC was the acid treatment for 2 h, evidenced by size measurements. This fact was supported by transmission electron microscope (TEM) and dynamic light scattering (DLS). In this regard, SEM studies of films showed an assembly process between the nanocelluloses and the CH matrix. The incorporation of CNC into the films resulted in strong interactions between the filler and the matrix demonstrating the affinity between the phases and modifying the mechanical profiles. In summary, CNC was found to be a satisfactory reinforcing agent in biodegradable nanocomposite chitosan-based packaging and are promising as a means to develop tailor-made materials.
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Affiliation(s)
- Diego Alejandro Marín-Silva
- CIDCA (Centro de Investigación y Desarrollo en Criotecnología de Alimentos), 47 y 116 S/N, La Plata B1900AJJ, Buenos Aires, Argentina; Centro Científico Tecnológico La Plata (CCT-La Plata) CONICET, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata 1900, Argentina
| | - Sandra Rivero
- CIDCA (Centro de Investigación y Desarrollo en Criotecnología de Alimentos), 47 y 116 S/N, La Plata B1900AJJ, Buenos Aires, Argentina; Centro Científico Tecnológico La Plata (CCT-La Plata) CONICET, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata 1900, Argentina; Facultad de Ciencias exactas, UNLP, La Plata 1900, Argentina.
| | - Adriana Pinotti
- CIDCA (Centro de Investigación y Desarrollo en Criotecnología de Alimentos), 47 y 116 S/N, La Plata B1900AJJ, Buenos Aires, Argentina; Centro Científico Tecnológico La Plata (CCT-La Plata) CONICET, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata 1900, Argentina; Facultad de Ingeniería, UNLP, La Plata 1900, Argentina
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A review on thermomechanical properties of polymers and fibers reinforced polymer composites. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.06.018] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Niaz T, Shabbir S, Noor T, Rahman A, Bokhari H, Imran M. Potential of polymer stabilized nano-liposomes to enhance antimicrobial activity of nisin Z against foodborne pathogens. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.05.029] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vasile C. Polymeric Nanocomposites and Nanocoatings for Food Packaging: A Review. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1834. [PMID: 30261658 PMCID: PMC6213312 DOI: 10.3390/ma11101834] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 09/10/2018] [Accepted: 09/22/2018] [Indexed: 01/20/2023]
Abstract
Special properties of the polymeric nanomaterials (nanoscale size, large surface area to mass ratio and high reactivity individualize them in food packaging materials. They can be processed in precisely engineered materials with multifunctional and bioactive activity. This review offers a general view on polymeric nanocomposites and nanocoatings including classification, preparation methods, properties and short methodology of characterization, applications, selected types of them used in food packaging field and their antimicrobial, antioxidant, biological, biocatalyst and so forth, functions.
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Affiliation(s)
- Cornelia Vasile
- Physical Chemistry of Polymers Department, Petru Poni Institute of Macromolecular Chemistry (PPIMC), Romanian Academy, 41A Gr. Ghica Alley, RO 700487 Iasi, Romania.
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Novel Attribute of Organic–Inorganic Hybrid Coatings for Protection and Preservation of Materials (Stone and Wood) Belonging to Cultural Heritage. COATINGS 2018. [DOI: 10.3390/coatings8090319] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In order to protect a material belonging to Cultural Heritage (i.e., stone, wood) from weathering, and in turn to preserve its beauty and historical value for the future generations, the contact with external harmful agents, particularly water, must be avoided, or at least limited. This task can be successfully obtained with the use of a protective organic coating. The use of nano-metric reinforcing agents in conventional polymeric coatings demonstrated to be a successful route in achieving better protective performance of the films and improved physical properties, even in extreme environments. The present paper would, therefore, review the more recent findings in this field. Generally speaking, when a hydrophobic product is applied on its surface, the stone material will absorb less water and consequently, less substances which may be harmful to it. An efficient organic coating should also supply wear and abrasion resistance, resistance to aggressive chemicals, excellent bond to the substrate; finally, it should be also able to guarantee vapor exchange between the environment and the material interior, i.e., the material should keep the same water vapor permeability as if it was un-protected. To regard to the conservation of wood artifacts, protective treatments for wood will preserve the material from environmental agents and biological attack. Hence, potential advantages of hybrid (organic–inorganic) nano-composite coatings for stone/wood have been found to be: Enhanced mechanical properties in comparison to the pure polymeric matrix, due to the reinforcing effect of the nano-filler; superior barrier properties (the presence of the nano-filler hinders the ingress of water and/or potentially harmful chemicals); optical clarity and transparency. It has been found that the efficacy of a nano-filled coating strongly depends on the effectiveness of the method used to uniformly disperse the nano-filler in the polymeric matrix. Furthermore, the presence of nano-particles should not impair the viscosity of the organic matrix, in order to employ the conventional techniques of application for coatings.
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Pathak AK, Kumar V, Sharma S, Yokozeki T, Dhakate SR. Improved thermomechanical and electrical properties of reduced graphene oxide reinforced polyaniline - dodecylbenzenesulfonic acid/divinylbenzene nanocomposites. J Colloid Interface Sci 2018; 533:548-560. [PMID: 30179833 DOI: 10.1016/j.jcis.2018.08.105] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/28/2018] [Accepted: 08/28/2018] [Indexed: 11/28/2022]
Abstract
HYPOTHESIS Various efforts are going on to improve the electrical properties of carbon fiber reinforced polymer (CFRP) composites. Conducting polymer is one the promising material to achieve the desired electrical properties of CFRP composites without compromising the mechanical properties as a lighting sticking material. EXPERIMENTS In present study, in addition to conducting polymer polyaniline (PANI), another conducting phase reduced graphene oxide (RGO) was incorporated in PANI based system. The RGO was synthesized and incorporated in different weight (0-0.5 wt%) fraction in dodecylbenzenesulfonic acid (DBSA) doped PANI-divinylbenzene (DVB) polymer to get PANI-DBSA/DVB nanocomposite. The mechanical and interfacial interaction was analyzed by universal testing machine (UTM) and transmitted electron microscopy (TEM). FINDINGS The addition of optimum 0.3 wt% RGO improved flexural strength and modulus of PANI-DSBA/RGO-DVB composite by 153% and 32% respectively over neat PANI-DBSA/DVB nanocomposite. The maximum electrical conductivity 0.301 S/cm, glass transition temperature (Tg) and thermal stability of nanocomposite realized at 0.3 wt% of RGO. Raman spectroscopy and HRTEM confirmed the improvement of interfacial bonding by H-bonding and π-π interaction. For the 1st time we are reporting RGO utilisation for the improvement of thermomechanical and electrical interfacial properties of PANI-DBSA/DVB nanocomposite for the structural applications.
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Affiliation(s)
- Abhishek K Pathak
- Advanced Carbon Products and Metrology Section, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, Dr K.S. Krishnan Marg, New Delhi 110012, India; Academy of Scientific Innovation and Research (AcSIR), NPL, New Delhi, India
| | - V Kumar
- Department of Aeronautics and Astronautics, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Sushant Sharma
- Advanced Carbon Products and Metrology Section, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, Dr K.S. Krishnan Marg, New Delhi 110012, India; Academy of Scientific Innovation and Research (AcSIR), NPL, New Delhi, India
| | - T Yokozeki
- Department of Aeronautics and Astronautics, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - S R Dhakate
- Advanced Carbon Products and Metrology Section, Advanced Materials and Devices Metrology Division, CSIR-National Physical Laboratory, Dr K.S. Krishnan Marg, New Delhi 110012, India; Academy of Scientific Innovation and Research (AcSIR), NPL, New Delhi, India.
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Functionalized carbon nanotube reinforced polymer nanocomposite microcapsules with enhanced stiffness. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.04.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Patwa R, Kumar A, Katiyar V. Effect of silk nano-disc dispersion on mechanical, thermal, and barrier properties of poly(lactic acid) based bionanocomposites. J Appl Polym Sci 2018. [DOI: 10.1002/app.46671] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Rahul Patwa
- Department of Chemical Engineering; Indian Institute of technology Guwahati; Guwahati Assam 781039 India
| | - Amit Kumar
- Department of Chemical Engineering; Indian Institute of technology Guwahati; Guwahati Assam 781039 India
| | - Vimal Katiyar
- Department of Chemical Engineering; Indian Institute of technology Guwahati; Guwahati Assam 781039 India
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Wagner A, White AP, Tang MC, Agarwal S, Stueckle TA, Rojanasakul Y, Gupta RK, Dinu CZ. Incineration of Nanoclay Composites Leads to Byproducts with Reduced Cellular Reactivity. Sci Rep 2018; 8:10709. [PMID: 30013129 PMCID: PMC6048035 DOI: 10.1038/s41598-018-28884-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 06/28/2018] [Indexed: 12/13/2022] Open
Abstract
Addition of nanoclays into a polymer matrix leads to nanocomposites with enhanced properties to be used in plastics for food packaging applications. Because of the plastics' high stored energy value, such nanocomposites make good candidates for disposal via municipal solid waste plants. However, upon disposal, increased concerns related to nanocomposites' byproducts potential toxicity arise, especially considering that such byproducts could escape disposal filters to cause inhalation hazards. Herein, we investigated the effects that byproducts of a polymer polylactic acid-based nanocomposite containing a functionalized montmorillonite nanoclay (Cloisite 30B) could pose to human lung epithelial cells, used as a model for inhalation exposure. Analysis showed that the byproducts induced toxic responses, including reductions in cellular viability, changes in cellular morphology, and cytoskeletal alterations, however only at high doses of exposure. The degree of dispersion of nanoclays in the polymer matrix appeared to influence the material characteristics, degradation, and ultimately toxicity. With toxicity of the byproduct occurring at high doses, safety protocols should be considered, along with deleterious effects investigations to thus help aid in safer, yet still effective products and disposal strategies.
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Affiliation(s)
- Alixandra Wagner
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Andrew P White
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Man Chio Tang
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Sushant Agarwal
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Todd A Stueckle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, 26505, USA
| | - Yon Rojanasakul
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV, 26506, USA
| | - Rakesh K Gupta
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Cerasela Zoica Dinu
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV, 26506, USA.
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Pawar RR, Lalhmunsiama, Gupta P, Sawant SY, Shahmoradi B, Lee SM. Porous synthetic hectorite clay-alginate composite beads for effective adsorption of methylene blue dye from aqueous solution. Int J Biol Macromol 2018; 114:1315-1324. [DOI: 10.1016/j.ijbiomac.2018.04.008] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 03/23/2018] [Accepted: 04/03/2018] [Indexed: 11/29/2022]
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Preparation and properties evaluation of polyimide-matrix nanocomposites reinforced with glutamine functionalized multi-walled carbon nanotube. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2358-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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Tewo RK, Rutto HL, Focke W, Seodigeng T, Koech LK. Formulations, development and characterization techniques of investment casting patterns. REV CHEM ENG 2018. [DOI: 10.1515/revce-2017-0068] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Conventionally, unfilled wax has been used as a universal pattern material for the investment casting process. With increase in demand for accurate dimensions and complex shapes, various materials have been blended with wax to develop more suitable patterns for investment casting in order to overcome performance limitations exhibited by unfilled wax. The present article initially reviews various investigations on the development of investment casting patterns by exploring pattern materials, type of waxes and their limitations, the effect of filler materials and various additives on unfilled wax, wax blends for pattern materials, plastics and polymers for pattern materials and 3D-printed patterns. The superiority of filled and polymer patterns in terms of dimensional accuracy, pattern strength, surface and flow properties over unfilled wax is also discussed. The present use of 3D patterns following their versatility in the manufacturing sector to revolutionize the investment casting process is also emphasized. Various studies on wax characterization such as physical (surface and dimensions), thermal (thermogravimetric analysis and differential scanning calorimetry), mechanical (thermomechanical analysis, tensile stress testing, dynamic mechanical analysis) and rheological (viscosity and shearing properties) are also discussed.
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Affiliation(s)
- Robert K. Tewo
- Department of Chemical Engineering , Vaal University of Technology , Private Bag X021 , Vanderbijlpark 1911 , South Africa
| | - Hilary L. Rutto
- Department of Chemical Engineering , Vaal University of Technology , Private Bag X021 , Vanderbijlpark 1911 , South Africa
| | - Walter Focke
- Department of Chemical Engineering , Institute of Applied Materials , University of Pretoria, Private Bag X020 , Hatfield 0028 , South Africa
| | - Tumisang Seodigeng
- Department of Chemical Engineering , Vaal University of Technology , Private Bag X021 , Vanderbijlpark 1911 , South Africa
| | - Lawrence K. Koech
- Department of Chemical Engineering , Vaal University of Technology , Private Bag X021 , Vanderbijlpark 1911 , South Africa
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Soleimani J, Ghanbarzadeh B, Dehghannya J, Baheri Islami S, Sorouraddin S. Comparative Numerical Study of Titanium and Silver Nano-particles Migration from Nano-composite of Polystyrene into Simulants on Experimental Data Basis. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2017. [DOI: 10.1515/ijfe-2017-0091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractNano-titanium dioxide and nano-silver combined with polystyrene granules to form a nano-composite film. Migration assess were performed by using food simulants 3% acetic acid (indicative acidic food) and 95% ethanol (indicative fatty food) at 40°C on different times of 2, 4, 6, 8 and 10 days. It was found that nanoparticle migration rate in acidic food was higher than fatty food. Diffusion coefficients of nanoparticles into simulants were estimated by inverse simulation of the migration process using finite-element method and experimental data of varied concentration. Simulation revealed an acceptable consistency between experimental data and predicted values. The numerical results indicated that the greatest diffusion coefficient was obtained by nano-titanium (2.8E-10 to 4.1E-9 m2s−1) in the 3% acetic acid. Results of concentration distribution confirmed a higher release rate and more uniformed distribution of nanoparticles for nano-titanium in the 3% acetic acid. It also found that in the migration process the diffusion coefficient is more important than the amount of nanoparticles concentration.
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Plasticisation and compatibilisation of poly(propylene) with poly(lauryl acrylate) surface modified MWCNTs. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.11.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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50
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Barbara I, Dourges MA, Deleuze H. Preparation of porous polyurethanes by emulsion-templated step growth polymerization. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.11.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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