1
|
Jiang X, Gallager S, Pàmies RP, Ruff SE, Liu Z. Laboratory-Simulated Photoirradiation Reveals Strong Resistance of Primary Macroplastics to Weathering. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:14775-14785. [PMID: 39106281 PMCID: PMC11339922 DOI: 10.1021/acs.est.3c09891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 07/03/2024] [Accepted: 07/05/2024] [Indexed: 08/09/2024]
Abstract
The photodegradation of macroplastics in the marine environment remains poorly understood. Here, we investigated the weathering of commercially available plastics (tabs 1.3 × 4.4 × 0.16 cm), including high-density polyethylene, low-density polyethylene, polypropylene, polystyrene, and polycarbonate, in seawater under laboratory-simulated ultraviolet A radiation for 3-9 months, equivalent to 25-75 years of natural sunlight exposure without considering other confounding factors. After the exposure, the physical integrity and thermal stability of the tabs remained relatively intact, suggesting that the bulk polymer chains were not severely altered despite strong irradiation, likely due to their low specific surface area. In contrast, the surface layer (∼1 μm) of the tabs was highly oxidized and eroded after 9 months of accelerated weathering. Several antioxidant additives were identified in the plastics through low temperature pyrolysis coupled with gas chromatography/mass spectrometry (Pyr-GC/MS) analysis. The Pyr-GC/MS results also revealed many new oxygen-containing compounds formed during photodegradation, and these compounds indicated the dominance of chain scission reactions during weathering. These findings highlight the strong resistance of industrial macroplastics to weathering, emphasizing the need for a broader range of plastics with varying properties and sizes to accurately estimate plastic degradation in the marine environment.
Collapse
Affiliation(s)
- Xiangtao Jiang
- The
University of Texas at Austin—Marine Science Institute, Port Aransas, Texas 78373, United States
| | - Scott Gallager
- Coastal
Ocean Vision, North Falmouth, Massachusetts 02556, United States
| | - Rut Pedrosa Pàmies
- The
Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts 02543, United States
| | - S. Emil Ruff
- The
Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts 02543, United States
| | - Zhanfei Liu
- The
University of Texas at Austin—Marine Science Institute, Port Aransas, Texas 78373, United States
| |
Collapse
|
2
|
Ratheesh A, Shibli SMA. Biochar supported Pseudomonas putida based globules for effective removal of Bisphenol A with a practical approach. CHEMOSPHERE 2024; 361:142496. [PMID: 38825245 DOI: 10.1016/j.chemosphere.2024.142496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 05/21/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
The widespread and inevitable use of plastic has led to prospective ecological problems through Bisphenol A (BPA), a synthetic chemical in plastic manufacturing. The present study addresses a unique methodology for eliminating BPA using the assistance of Pseudomonas putida. In the present work, biomass was torrefied to generate biochar with highly porous networks that could accommodate the bacterial species for effective colonization and multiplication. The designed biochar-bacterial globules demonstrated the ability to effectively remove BPA (96.88%) at a concentration of up to 2 g/L. The biochar-bacterial globules could effectively adsorb BPA at a low concentration of 20 mg/L. The alteration in pH did not impact the globule's performance, providing additional support for the practical utilization of these globules in polluted water bodies. In addition, the biochar-bacterial globules exhibited superior effectiveness in degradation compared to the standard levels, particularly in saline conditions. The simplicity and effectiveness of the approach make it promising for real-world implementation in addressing ecological problems associated with BPA contamination.
Collapse
Affiliation(s)
- Anjana Ratheesh
- Department of Biotechnology, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695 581, India
| | - S M A Shibli
- Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695 581, India; Centre for Renewable Energy and Materials, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695 581, India.
| |
Collapse
|
3
|
Yang Z, Liu H, Zhao J, Wang C, Li H, Wang X, Yang Y, Wu H, Gu Z, Li Y. UV absorption enhanced polydopamine coating. MATERIALS HORIZONS 2024; 11:2438-2448. [PMID: 38441227 DOI: 10.1039/d4mh00109e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
Mussel-inspired polydopamine (PDA) coatings have gained significant attention in various fields, including biomedicine, energy, detection, and UV protection, owing to their versatile and promising properties. Among these properties, UV shielding stands out as a key feature of PDA coatings. Nevertheless, the current methods for tuning the UV-shielding properties of PDA coatings are quite limited, and only rely on thickness adjustment, which might involve additional issues like color and visible light transmittance to the coating layer. In this study, we propose a facile and modular approach to enhance the UV absorption of PDA coatings by incorporating thiol-heterocycle (TH) derivatives. Both pre- and post-modification strategies can effectively impede the formation of conjugated structures within PDA, leading to enhanced UV absorption within the PDA layers. More importantly, these strategies can improve the UV absorption of PDA coatings while reducing the visible light absorption. Furthermore, this method enabled efficient regulation of the UV absorption of PDA coatings by altering the ring type (benzene ring or pyridine ring) and substituent on the ring (methoxyl group or hydrogen atom). These PDA coatings with enhanced UV absorption demonstrate great promise for applications in UV protection, antibacterial activity, wound healing and dye degradation.
Collapse
Affiliation(s)
- Zhen Yang
- Department of Radiology, Huaxi MR Research Center, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Huijie Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Junyi Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Chao Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Haotian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Xianheng Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Ye Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Haoxing Wu
- Department of Radiology, Huaxi MR Research Center, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Zhipeng Gu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Yiwen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| |
Collapse
|
4
|
Wesdemiotis C, Williams-Pavlantos KN, Keating AR, McGee AS, Bochenek C. Mass spectrometry of polymers: A tutorial review. MASS SPECTROMETRY REVIEWS 2024; 43:427-476. [PMID: 37070280 DOI: 10.1002/mas.21844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 03/03/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
Ever since the inception of synthetic polymeric materials in the late 19th century, the number of studies on polymers as well as the complexity of their structures have only increased. The development and commercialization of new polymers with properties fine-tuned for specific technological, environmental, consumer, or biomedical applications requires powerful analytical techniques that permit the in-depth characterization of these materials. One such method with the ability to provide chemical composition and structure information with high sensitivity, selectivity, specificity, and speed is mass spectrometry (MS). This tutorial review presents and exemplifies the various MS techniques available for the elucidation of specific structural features in a synthetic polymer, including compositional complexity, primary structure, architecture, topology, and surface properties. Key to every MS analysis is sample conversion to gas-phase ions. This review describes the fundamentals of the most suitable ionization methods for synthetic materials and provides relevant sample preparation protocols. Most importantly, structural characterizations via one-step as well as hyphenated or multidimensional approaches are introduced and demonstrated with specific applications, including surface sensitive and imaging techniques. The aim of this tutorial review is to illustrate the capabilities of MS for the characterization of large, complex polymers and emphasize its potential as a powerful compositional and structural elucidation tool in polymer chemistry.
Collapse
Affiliation(s)
| | | | - Addie R Keating
- Department of Chemistry, The University of Akron, Akron, Ohio, USA
| | - Andrew S McGee
- Department of Chemistry, The University of Akron, Akron, Ohio, USA
| | - Calum Bochenek
- Department of Chemistry, The University of Akron, Akron, Ohio, USA
| |
Collapse
|
5
|
Chen C, Du R, Tang J, Wang B, Li F, Zhang Z, Yu G. Characterization of microplastic-derived dissolved organic matter in freshwater: Effects of light irradiation and polymer types. ENVIRONMENT INTERNATIONAL 2024; 185:108536. [PMID: 38471263 DOI: 10.1016/j.envint.2024.108536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/05/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024]
Abstract
This study investigated the impacts of light irradiation and polymer types on the leaching behavior of dissolved organic matter (DOM) from microplastics (MPs) in freshwater. Polypropylene had the highest leaching capacity of DOM after photoaging, followed by polystyrene (PS), polyamide (PA) and polyethylene terephthalate (PET). While similarly low levels of DOM were observed in the remaining 5 MP suspensions under UV irradiation and in almost all MP suspensions (except PA) under darkness. These suggest that the photooxidation of some buoyant plastics may influence the carbon cycling of nature waters. Among 9 MP-derived leachates, PET leachates had the highest chromophoric DOM concentration and aromaticity, probably owing to the special benzene rings and carbonyl groups in PET structures and its fast degradation rate. Protein-like substances were the primary fluorescent DOM in MP suspensions (except PS), especially in darkness no other fluorescent substances were found. Considering the bio-labile properties of proteins together, MPs regardless of floating or suspended in an aquatic environment may have prevalent long-term effects on microbial activities. Besides, from monomers to hexamers with newly formed chemical bonds were identified in UV-irradiated MP suspensions. These results will contribute to a deep insight into the potential ecological effects related to MP degradation.
Collapse
Affiliation(s)
- Chunzhao Chen
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai, China
| | - Roujia Du
- School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, Beijing Laboratory of Environmental Frontier Technologies, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, China
| | - Jian Tang
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai, China
| | - Bin Wang
- School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, Beijing Laboratory of Environmental Frontier Technologies, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, China
| | - Fei Li
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ, USA
| | - Zhiguo Zhang
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai, China
| | - Gang Yu
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai, China; School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, Beijing Laboratory of Environmental Frontier Technologies, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, China.
| |
Collapse
|
6
|
Song Y, Dunleavy M, Li L. How to Make Plastic Surfaces Simultaneously Hydrophilic/Oleophobic? ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37326374 DOI: 10.1021/acsami.3c06787] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Hydrophilic/oleophobic surfaces are desirable in many applications including self-cleaning, antifogging, oil-water separation, etc. However, making plastic surfaces hydrophilic/oleophobic is challenging due to the intrinsic hydrophobicity/oleophilicity of plastics. Here, we report a simple and effective method of making plastics hydrophilic/oleophobic. Plastics, including poly (methyl methacrylate) (PMMA), polystyrene (PS), and polycarbonate (PC), have been coated with a perfluoropolyether (PFPE) (i.e., commercially known as Zdol) via dip coating and then irradiated with UV/Ozone. The contact angle measurements indicate that the treated plastics have a lower water contact angle (WCA) and higher hexadecane contact angle (HCA), i.e., they are simultaneously hydrophilic/oleophobic. The Fourier transform infrared (FTIR) results suggest that UV/Ozone treatment introduces oxygen-containing polar groups on the plastic surfaces, which renders the plastic surfaces hydrophilic. Meanwhile, more orderly packed PFPE Zdol molecules, which is due to the UV-induced bonding between PFPE Zdol and the plastic surface, result in the oleophobicity. Moreover, the simultaneous hydrophilicity/oleophobicity of functionalized plastics does not degrade in aging tests, and they have superior antifogging performance and detergent-free cleaning capability. This simple method developed here potentially can be applied to other plastics and has important implications in the functionalization of plastic surfaces.
Collapse
Affiliation(s)
- Yihan Song
- Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Michaela Dunleavy
- Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Lei Li
- Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| |
Collapse
|
7
|
Synthesis of High-T Fluorinated Polyesters Based on 2,5-Furandicarboxylic Acid. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
8
|
Takimoto K, Takeuchi K, Ton NNT, Taniike T. Exploring stabilizer formulations for light-induced yellowing of polystyrene by high-throughput experimentation and machine learning. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.109967] [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]
|
9
|
Katoh T, Saso M, Ohta Y, Yokozawa T. Synthesis of polycarbonates and polycarbonate/polyester copolymers through an ester-carbonate exchange reaction. Polym J 2022. [DOI: 10.1038/s41428-022-00663-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
10
|
The Evaluation of Simulated Environmental Degradation of Polycarbonate Filled with Inorganic and Organic Reinforcements. Polymers (Basel) 2021; 13:polym13203572. [PMID: 34685330 PMCID: PMC8540693 DOI: 10.3390/polym13203572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/08/2021] [Accepted: 10/13/2021] [Indexed: 12/03/2022] Open
Abstract
This research aimed to examine the mechanical properties of polycarbonate-based composites filled with both organic and inorganic reinforcements before and after simulated environmental degradation. Series of polycarbonate-based samples were prepared in the form of thin tapes. Their rheological properties were examined. Then, the samples were exposed to artificial environmental conditions. Finally, their rheological properties were examined once more, and the results were compared with those obtained for untreated samples. This paper presents basic research on the application of inorganic fillers to polycarbonate in order to determine the influence of the filler on the behavior of the obtained material. The aim of the work was to determine the usefulness and purpose of using this type of filler in polycarbonates for applications in contact with ultraviolet radiation, especially medical applications.
Collapse
|
11
|
Mathematical Modeling of Outdoor Natural Weathering of Polycarbonate: Regional Characteristics of Degradation Behaviors. Polymers (Basel) 2021; 13:polym13050820. [PMID: 33800081 PMCID: PMC7962193 DOI: 10.3390/polym13050820] [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: 02/20/2021] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 11/17/2022] Open
Abstract
Many natural exposure sites have been developed to ensure the reliability of materials intended for outdoor use. However, the effects of local climate on aging have not been completely understood. This study aimed to elucidate the regional characteristics of natural aging. Non-stabilized and stabilized polycarbonates were monitored in terms of their appearance (yellowing and loss of gloss) during natural weathering at five exposure sites (Tokyo, Kagoshima, Okinawa, Florida, and Arizona) in conjunction with climate fluctuation for up to 24 months. Three approaches were employed to characterize the natural aging behaviors: (i) modeling the rate function of degradation, (ii) evaluating the contribution ratio of individual degradational factors, and (iii) estimating the "synchronicity" by cross-correlation analysis with the climate dataset. The aging rates were the highest in Arizona and lowest in Kagoshima among the five exposure sites. First, prediction curves were constructed from the degradation rate function (variables: UV irradiation, temperature, and humidity), and these curves were found to agree well with the measured aging behaviors. Second, the exposure data in Arizona demonstrated strong temperature dependence, while those in Okinawa and Florida had stronger dependence on UV irradiation compared to other sites. Lastly, the synchronicity between UV irradiation and temperature was the highest in Arizona and lowest in Kagoshima, which can explain the significantly faster deterioration in Arizona and the slow deterioration in Kagoshima.
Collapse
|
12
|
Yu L, Cheng J, Yang H, Lv J, Wang P, Li JR, Su X. Simultaneous adsorption and determination of bisphenol compounds in water medium with a Zr(IV)-based metal-organic framework. Mikrochim Acta 2021; 188:83. [PMID: 33585953 DOI: 10.1007/s00604-021-04742-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/30/2021] [Indexed: 12/21/2022]
Abstract
A chemically stable Zr(IV)-based metal-organic framework (BUT-17) has been explored for simultaneous adsorption and determination of bisphenol compounds (BPs) in aqueous medium. The prepared BUT-17 possesses a large surface area (2936 m2 g-1) and excellent fluorescent performance. An adsorption capacity of 111 mg g-1 for bisphenol A (BPA) with a rapid adsorption rate (1.76 g mg-1 min-1) is achieved by BUT-17. The excellent adsorption performance could be attributed to the hydrogen bond interaction between BPs and BUT-17. Furthermore, the fluorescent intensity of BUT-17 was quenched up to 92% due to the formation of complexes between BPs and BUT-17. Thus, a BUT-17-based fluorescent sensing method for the rapid determination of BPs has been established with the limit of detection of 10.0 ng mL-1 for BPA and a linear range from 2.0 to 23.0 μg mL-1. These results indicate that as an outstanding multifunctional platform, BUT-17 is promising for the simultaneous removal and determination of BPs in water medium. Simultaneous removal and detection of BPs with BUT-17.
Collapse
Affiliation(s)
- Liming Yu
- Institute of Quality Standards and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Jie Cheng
- Institute of Quality Standards and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Haosen Yang
- Institute of Quality Standards and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Jie Lv
- Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Peilong Wang
- Institute of Quality Standards and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China.
| | - Jian-Rong Li
- Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Xiaoou Su
- Institute of Quality Standards and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| |
Collapse
|
13
|
Edible Films from Carrageenan/Orange Essential Oil/Trehalose-Structure, Optical Properties, and Antimicrobial Activity. Polymers (Basel) 2021; 13:polym13030332. [PMID: 33494246 PMCID: PMC7864528 DOI: 10.3390/polym13030332] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/17/2021] [Accepted: 01/19/2021] [Indexed: 01/11/2023] Open
Abstract
The research aim was to use orange essential oil and trehalose in a carrageenan matrix to form edible packaging. The edible packaging experimentally produced by casting from an aqueous solution were evaluated by the following analysis: UV-Vis spectrum, transparency value, transmittance, attenuated total reflectance Fourier-Transform spectroscopy (FTIR), scanning electron microscopy (SEM) and antimicrobial activity. The obtained results showed that the combination of orange essential oil with trehalose decreases the transmittance value in the UV and Vis regions (up to 0.14% ± 0.02% at 356 nm), meaning that produced films can act as a UV protector. Most produced films in the research were resistant to Gram-positive bacteria (Staphylococcus aureus subsp. aureus), though most films did not show antibacterial properties against Gram-negative bacteria and yeasts. FTIR and SEM confirmed that both the amount of carrageenan used and the combination with orange essential oil influenced the compatibility of trehalose with the film matrix. The research showed how different combinations of trehalose, orange essential oils and carrageenan can affect edible film properties. These changes represent important information for further research and the possible practical application of these edible matrices.
Collapse
|
14
|
Frenzilli G, Martorell-Ribera J, Bernardeschi M, Scarcelli V, Jönsson E, Diano N, Moggio M, Guidi P, Sturve J, Asker N. Bisphenol A and Bisphenol S Induce Endocrine and Chromosomal Alterations in Brown Trout. Front Endocrinol (Lausanne) 2021; 12:645519. [PMID: 33776939 PMCID: PMC7992001 DOI: 10.3389/fendo.2021.645519] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/05/2021] [Indexed: 12/29/2022] Open
Abstract
Bisphenol A is a widely used compound found in large amount of consumer products. As concerns have been raised about its toxicological and public health effect, the use of alternatives to bisphenol A are now increasing. Bisphenol S is one of the analogues being used as a replacement for bisphenol A despite the fact that little is known about the effects of bisphenol S on living organisms. In this study, we investigated the potential endocrine and genotoxic effects of bisphenol A and bisphenol S in juvenile brown trout (Salmo trutta). The fish were exposed to the compounds for either 2 weeks or 8 weeks via sustained-release cholesterol implants containing doses of 2 mg/kg fish or 20 mg/kg fish of the substances. The effects on the thyroid hormone levels and the estrogenic disrupting marker vitellogenin were evaluated, along with the genotoxic markers micronucleated cells and erythrocyte nuclear abnormalities. An increase in plasma vitellogenin was observed in fish exposed to the high dose of bisphenol A for 2 weeks. At this experimental time the level of the thyroid hormone triiodothyronine (T3) in plasma was elevated after bisphenol S exposure at the high concentration, and paralleled by an increase of micronucleated cells. Moreover, bisphenol A induced an increase of micronuclei frequency in fish erythrocytes after the exposure at the lowest dose tested. Taken together the results indicate that both bisphenol A and its alternative bisphenol S cause endocrine disrupting and genotoxic effects in brown trout, although suggesting two different mechanisms of damage underlying bisphenol A and bisphenol S activity.
Collapse
Affiliation(s)
- Giada Frenzilli
- Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, University of Pisa, Pisa, Italy
- *Correspondence: Giada Frenzilli,
| | - Joan Martorell-Ribera
- Institute for Genome Biology, Fish Genetics Unit, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Margherita Bernardeschi
- Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, University of Pisa, Pisa, Italy
| | - Vittoria Scarcelli
- Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, University of Pisa, Pisa, Italy
| | - Elisabeth Jönsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Nadia Diano
- Department of Experimental Medicine, University of Campania “L. Vanvitelli”, Naples, Italy
| | - Martina Moggio
- Department of Experimental Medicine, University of Campania “L. Vanvitelli”, Naples, Italy
| | - Patrizia Guidi
- Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, University of Pisa, Pisa, Italy
| | - Joachim Sturve
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Noomi Asker
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| |
Collapse
|
15
|
Zhang Newby B, Malekzadeh E, Alghunaim A. Retention of poly(
N
‐isopropylacrylamide) thin films on polycarbonate via polymer interdiffusion. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bi‐min Zhang Newby
- Department of Chemical, Biomolecular, and Corrosion Engineering The University of Akron Akron Ohio USA
| | - Elham Malekzadeh
- Department of Chemical, Biomolecular, and Corrosion Engineering The University of Akron Akron Ohio USA
| | - Abdullah Alghunaim
- Department of Chemical, Biomolecular, and Corrosion Engineering The University of Akron Akron Ohio USA
| |
Collapse
|
16
|
Jiang H, Zhang Y, Wang H. Surface Reactions in Selective Modification: The Prerequisite for Plastic Flotation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:9742-9756. [PMID: 32659077 DOI: 10.1021/acs.est.9b07861] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Improper disposal of waste plastic has caused much environmental pollution, but plastic recycling can reduce the amount of new and residual waste plastic in the environment through source control. Plastic flotation can separate waste plastics with similar physical and chemical properties, which suggests its promising application in plastic recycling. With the help of the different hydrophilicities waste plastic can be separated by flotation, and hydrophilization can be accomplished by surface modifications. However, no systematic studies addressing these surface reactions have been published yet, and such modifications are a prerequisite for plastic flotation. In this critical review, we not only summarize the various modification mechanisms, including physical regulation, surface oxidation, surface degradation, dechlorination, and coating, but also have reasonably added additional information for some reactions covering surface reconstruction, plastic degradation, polymer stability, wastewater treatment, soil remediation, and chemical recycling of plastic. An entirely novel concept, the "plastic gene", is also proposed to elaborate on some contradictory results. Plastic flotation with clear surface reactions may promote plastic recycling and thereby control waste plastic at the source, save energy, and reduce microplastics. We also predict challenges for clean, efficient, and practical surface modifications and plastic flotation.
Collapse
Affiliation(s)
- Hongru Jiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan P.R. China
| | - Yingshuang Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan P.R. China
| | - Hui Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan P.R. China
| |
Collapse
|
17
|
Saint Martin G, Portu A, Ibarra M, Alurralde M. UV-C radiation effect on nuclear tracks of different ions in polycarbonate. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
18
|
Mezera M, Alamri S, Hendriks WA, Hertwig A, Elert AM, Bonse J, Kunze T, Lasagni AF, Römer GWR. Hierarchical Micro-/Nano-Structures on Polycarbonate via UV Pulsed Laser Processing. NANOMATERIALS 2020; 10:nano10061184. [PMID: 32560579 PMCID: PMC7353188 DOI: 10.3390/nano10061184] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 05/29/2020] [Accepted: 06/02/2020] [Indexed: 01/07/2023]
Abstract
Hierarchical micro/-nanostructures were produced on polycarbonate polymer surfaces by employing a two-step UV-laser processing strategy based on the combination of Direct Laser Interference Patterning (DLIP) of gratings and pillars on the microscale (3 ns, 266 nm, 2 kHz) and subsequently superimposing Laser-induced Periodic Surface Structures (LIPSS; 7-10 ps, 350 nm, 100 kHz) which adds nanoscale surface features. Particular emphasis was laid on the influence of the direction of the laser beam polarization on the morphology of resulting hierarchical surfaces. Scanning electron and atomic force microscopy methods were used for the characterization of the hybrid surface structures. Finite-difference time-domain (FDTD) calculations of the laser intensity distribution on the DLIP structures allowed to address the specific polarization dependence of the LIPSS formation observed in the second processing step. Complementary chemical analyzes by micro-Raman spectroscopy and attenuated total reflection Fourier-transform infrared spectroscopy provided in-depth information on the chemical and structural material modifications and material degradation imposed by the laser processing. It was found that when the linear laser polarization was set perpendicular to the DLIP ridges, LIPSS could be formed on top of various DLIP structures. FDTD calculations showed enhanced optical intensity at the topographic maxima, which can explain the dependency of the morphology of LIPSS on the polarization with respect to the orientation of the DLIP structures. It was also found that the degradation of the polymer was enhanced for increasing accumulated fluence levels.
Collapse
Affiliation(s)
- Marek Mezera
- Department of Mechanics of Solids, Surfaces and Systems (MS3), Faculty of Engineering Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands;
- Correspondence:
| | - Sabri Alamri
- Fraunhofer Institut für Werkstoff- und Strahltechnik (IWS), Winterbergstraße 28, 01277 Dresden, Germany; (S.A.); (T.K.); (A.F.L.)
| | - Ward A.P.M. Hendriks
- Optical Science Group, MESA + Institute for Nanotechnology, University of Twente, Drienerlolaan 5, 7500 AE Enschede, The Netherlands;
| | - Andreas Hertwig
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany; (A.H.); (A.M.E.); (J.B.)
| | - Anna Maria Elert
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany; (A.H.); (A.M.E.); (J.B.)
| | - Jörn Bonse
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany; (A.H.); (A.M.E.); (J.B.)
| | - Tim Kunze
- Fraunhofer Institut für Werkstoff- und Strahltechnik (IWS), Winterbergstraße 28, 01277 Dresden, Germany; (S.A.); (T.K.); (A.F.L.)
| | - Andrés Fabián Lasagni
- Fraunhofer Institut für Werkstoff- und Strahltechnik (IWS), Winterbergstraße 28, 01277 Dresden, Germany; (S.A.); (T.K.); (A.F.L.)
- Institut für Fertigungstechnik, Technische Universität Dresden, Georg-Bähr-Str. 3c, 01069 Dresden, Germany
| | - Gert-willem R.B.E. Römer
- Department of Mechanics of Solids, Surfaces and Systems (MS3), Faculty of Engineering Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands;
| |
Collapse
|
19
|
Bandow N, Aitken MD, Geburtig A, Kalbe U, Piechotta C, Schoknecht U, Simon FG, Stephan I. Using Environmental Simulations to Test the Release of Hazardous Substances from Polymer-Based Products: Are Realism and Pragmatism Mutually Exclusive Objectives? MATERIALS 2020; 13:ma13122709. [PMID: 32549187 PMCID: PMC7345583 DOI: 10.3390/ma13122709] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 01/11/2023]
Abstract
The potential release of hazardous substances from polymer-based products is currently in the focus of environmental policy. Environmental simulations are applied to expose such products to selected aging conditions and to investigate release processes. Commonly applied aging exposure types such as solar and UV radiation in combination with water contact, corrosive gases, and soil contact as well as expected general effects on polymers and additional ingredients of polymer-based products are described. The release of substances is based on mass-transfer processes to the material surfaces. Experimental approaches to investigate transport processes that are caused by water contact are presented. For tailoring the tests, relevant aging exposure types and release quantification methods must be combined appropriately. Several studies on the release of hazardous substances such as metals, polyaromatic hydrocarbons, flame retardants, antioxidants, and carbon nanotubes from polymers are summarized exemplarily. Differences between natural and artificial exposure tests are discussed and demonstrated for the release of flame retardants from several polymers and for biocides from paints. Requirements and limitations to apply results from short-term artificial environmental exposure tests to predict long-term environmental behavior of polymers are presented.
Collapse
Affiliation(s)
- Nicole Bandow
- German Environment Agency, Corrensplatz 1, 14195 Berlin, Germany;
| | - Michael D. Aitken
- Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, NC 27599-7431, USA;
| | - Anja Geburtig
- Bundesanstalt für Materialforschung und-prüfung (BAM), 12200 Berlin, Germany; (A.G.); (C.P.); (U.S.); (F.-G.S.); (I.S.)
| | - Ute Kalbe
- Bundesanstalt für Materialforschung und-prüfung (BAM), 12200 Berlin, Germany; (A.G.); (C.P.); (U.S.); (F.-G.S.); (I.S.)
- Correspondence:
| | - Christian Piechotta
- Bundesanstalt für Materialforschung und-prüfung (BAM), 12200 Berlin, Germany; (A.G.); (C.P.); (U.S.); (F.-G.S.); (I.S.)
| | - Ute Schoknecht
- Bundesanstalt für Materialforschung und-prüfung (BAM), 12200 Berlin, Germany; (A.G.); (C.P.); (U.S.); (F.-G.S.); (I.S.)
| | - Franz-Georg Simon
- Bundesanstalt für Materialforschung und-prüfung (BAM), 12200 Berlin, Germany; (A.G.); (C.P.); (U.S.); (F.-G.S.); (I.S.)
| | - Ina Stephan
- Bundesanstalt für Materialforschung und-prüfung (BAM), 12200 Berlin, Germany; (A.G.); (C.P.); (U.S.); (F.-G.S.); (I.S.)
| |
Collapse
|
20
|
Zhang Y, Li C, Wang L, Wang H. Application of froth flotation in the separation of polyvinyl chloride and polycarbonate for recycling of waste plastic based on a novel surface modification. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 110:43-52. [PMID: 32470902 DOI: 10.1016/j.wasman.2020.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 05/03/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
The complicated stream of waste plastic impedes the recycling of polyvinyl chloride (PVC) and polycarbonate (PC), which can be settled by flotation separation. We proposed a novel chlorine dioxide (ClO2) pretreatment to assist the separation of PVC and PC by froth flotation, and clarified possible surface reactions of hydrophilic PC by contact angles, scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The hydrolysis and further rearrangement of carbonic esters (O(CO)O) may be deemed as the main reason for hydrophilic PC, introducing oxygenated functional groups, such as hydroxyl groups (COH), carboxyl groups (COOH), and tiny acyl chloride (ClCO), on PC surfaces. The robustness of this process was proved by efficient flotation separation of PVC and PC under various conditions of size fractions, frother concentration, mass ratio, and flotation time. The optimal pretreatment conditions for flotation separation of PVC and PC are temperature of 70 °C, ClO2 concentration of 0.5 g/L, and treatment time of 70 min. The optimal recovery and purity of PC in sunken plastic can stably maintain 97% and 99%, respectively. Compared with waste plastic, raw PC embraces a high floatability after ClO2 pretreatment, revealing that ageing is conducive to surface modification.
Collapse
Affiliation(s)
- Yingshuang Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, China
| | - Cui Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, China; Dehong Teachers' College, Mangshi, 678400 Yunnan, China
| | - Ling Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, China
| | - Hui Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, China.
| |
Collapse
|
21
|
El-Mesady I, Rammah Y, Abdalla A, Ghanim E. Gamma irradiation effect towards photoluminescence and optical properties of Makrofol DE 6-2. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2019.108578] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
22
|
Alomar MS, Boyles DA. Synthesis of a Regioregular Series of Poly(aryl ether carbonates) and Their Glass Transition Temperatures. ACS OMEGA 2019; 4:22363-22372. [PMID: 31909319 PMCID: PMC6941183 DOI: 10.1021/acsomega.9b02648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Bisphenol A polycarbonate (BPA-PC) is a remarkable high-performance engineering polymer, although it is susceptible to photo-Fries and hydrolytic degradation. New poly(aryl ether carbonates) were synthesized to address these limitations by replacing the chain backbone carbonate ester functionality with aryl ether functionality. The monomers for these new polymers were synthesized by a variation of the Ullmann condensation accelerated by 2,2,6,6-tetramethylheptane-3,5-dione and promoted by Cs2CO3 and 1-methyl-2-pyrrolidinone under mild conditions. Four such bisphenol A-based diarylether monomers containing different mass ratios of carbonate ester groups were prepared and polymerized with phosgene gas to give novel poly(aryl ether carbonates). Polymers were named as di-o-BPA-PC 9', tri-o-BPA-PC 11', tetra-o-BPA-PC 13', and penta-o-BPA-PC 15' where di-, tri-, tetra-, and penta- reflect the number of diphenylisopropylidene units in each of the respective polymers. The molecular weights of the resulting four poly(aryl ether carbonates) were measured by gel permeation chromatography. Differential scanning calorimetry was used to measure glass transition temperature (T g). The polymers exhibited weight-average molecular weights up to 4.09 × 105 g/mol and T g in the range of 136 to 149 °C with no melting temperature peak, indicative of their amorphous character. The new polymers formed transparent and flexible films by solution casting from chloroform solution.
Collapse
Affiliation(s)
- Mohammad S. Alomar
- Department
of Chemical Engineering Technology, Jazan
University, Jazan 45142, Saudi Arabia
| | - David A. Boyles
- Jack
R. Gaines Emeritus Professor of Chemistry, Department of Chemistry
and Applied Biological Sciences, South Dakota
School of Mines and Technology, Rapid City, South Dakota 57701, United States
| |
Collapse
|
23
|
Ascione L, Mistretta MC, Pedeferri M, La Mantia FP. Effect of environmental conditions on the durability of polycarbonate for the protection of cultural heritage sites. J Appl Biomater Funct Mater 2019; 17:2280800019881626. [PMID: 31847671 DOI: 10.1177/2280800019881626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Polycarbonate is a good material for covering and protecting cultural heritage sites because of its durability, mechanical properties, and transparency. However, polycarbonate degrades under environmental weathering with a significant decrease of physical and mechanical properties and loss of transparency. In this work, the contemporary presence of ultraviolet irradiation and different temperature and moisture conditions have been taken into account to study the environmental degradation of this polymer with regard to its mechanical and optical properties. The photo-oxidation reactions cause a decrease in the molecular weight and the formation of many oxygenated species. The hydrolytic scission, instead, gives rise to a remarkable reduction in the molecular weight. These two different degradation mechanisms do not seem interconnected because at the lowest degradation temperature and high humidity levels, the reduction of the molecular weight is more pronounced than that observed at the highest temperature but at a lower humidity level. Transparency decreases with the degradative processes, but even after severe degradation the loss of transparency is only about 10%. The yellowness index increases during the first stages of degradation, which has been attributed to the fast formation of carbonyl groups due to photo-oxidation.
Collapse
Affiliation(s)
- Laura Ascione
- Department of Engineering, University of Palermo, Palermo, Italy.,INSTM, National Interuniversity Consortium of Materials Science and Technology, UdR Palermo, Palermo, Italy
| | - Maria Chiara Mistretta
- Department of Engineering, University of Palermo, Palermo, Italy.,INSTM, National Interuniversity Consortium of Materials Science and Technology, UdR Palermo, Palermo, Italy
| | - MariaPia Pedeferri
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy.,INSTM, National Interuniversity Consortium of Materials Science and Technology, UdR Politecnico di Milano, Italy
| | - Francesco Paolo La Mantia
- Department of Engineering, University of Palermo, Palermo, Italy.,INSTM, National Interuniversity Consortium of Materials Science and Technology, UdR Palermo, Palermo, Italy
| |
Collapse
|
24
|
Influence of Bulk Temperature on Laser-Induced Periodic Surface Structures on Polycarbonate. Polymers (Basel) 2019; 11:polym11121947. [PMID: 31783566 PMCID: PMC6960584 DOI: 10.3390/polym11121947] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/15/2019] [Accepted: 11/23/2019] [Indexed: 01/12/2023] Open
Abstract
In this paper, the influence of the bulk temperature (BT) of Polycarbonate (PC) on the occurrence and growth of Laser-induced Periodic Surface Structures (LIPSS) is studied. Ultrashort UV laser pulses with various laser peak fluence levels F0 and various numbers of overscans (NOS) were applied on the surface of pre-heated Polycarbonate at different bulk temperatures. Increased BT leads to a stronger absorption of laser energy by the Polycarbonate. For NOS<1000 High Spatial Frequency LIPSS (HSFL), Low Spatial Frequency LIPSS perpendicular (LSFL-I) and parallel (LSFL-II) to the laser polarization were only observed on the rim of the ablated tracks on the surface but not in the center of the tracks. For NOS≥1000, it was found that when pre-heating the polymer to a BT close its glass transition temperature (Tg), the laser fluence to achieve similar LIPSS as when processed at room temperature decreases by a factor of two. LSFL types I and II were obtained on PC at a BT close to Tg and their periods and amplitudes were similar to typical values found in the literature. To the best of the author’s knowledge, it is the first time both LSFL types developed simultaneously and consistently on the same sample under equal laser processing parameters. The evolution of LIPSS from HSFL, over LSFL-II to LSFL I, is described, depending on laser peak fluence levels, number of pulses processing the spot and bulk temperature.
Collapse
|
25
|
Wang Y, Li Y, Wang W, Lv L, Li C, Zhang J. Recycled polycarbonate/acrylonitrile-butadiene-styrene reinforced and toughened through chemical compatibilization. J Appl Polym Sci 2019. [DOI: 10.1002/app.47537] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yafei Wang
- School of Materials Science and Engineering; North University of China; Taiyuan 030051 China
| | - Yingchun Li
- School of Materials Science and Engineering; North University of China; Taiyuan 030051 China
| | - Wensheng Wang
- School of Materials Science and Engineering; North University of China; Taiyuan 030051 China
| | - Lida Lv
- School of Materials Science and Engineering; North University of China; Taiyuan 030051 China
| | - Chenhong Li
- School of Materials Science and Engineering; North University of China; Taiyuan 030051 China
| | - Jianbin Zhang
- School of Materials Science and Engineering; North University of China; Taiyuan 030051 China
| |
Collapse
|
26
|
Xie F, Zhang T, Bryant P, Kurusingal V, Colwell JM, Laycock B. Degradation and stabilization of polyurethane elastomers. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2018.12.003] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
27
|
M'rabet C, Kéfi-Daly Yahia O, Couet D, Gueroun SKM, Pringault O. Consequences of a contaminant mixture of bisphenol A (BPA) and di-(2-ethylhexyl) phthalate (DEHP), two plastic-derived chemicals, on the diversity of coastal phytoplankton. MARINE POLLUTION BULLETIN 2019; 138:385-396. [PMID: 30660288 DOI: 10.1016/j.marpolbul.2018.11.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 11/13/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
To assess the impact of two plastic derived chemicals: bisphenol A (BPA) and the di-2-ethylhexyl phthalate (DEHP), on phytoplankton biomass and community structure, microcosm incubations were performed during spring and summer, with offshore and lagoon waters of a south-western Mediterranean ecosystem. Phytoplankton were exposed to an artificial mixture of BPA and DEHP and to marine water previously enriched with plastic-derivative compounds, originated from in situ water incubations of plastic debris for 30 days. After 96 h of incubation, changes were observed in phytoplankton biomass in the contaminated microcosms, with a net decrease (up to 50% of the control) in the concentration of Chlorophyll a in offshore waters. Concomitantly, plastic-derivative contamination provoked structural changes, especially for offshore waters. This suggests a relative tolerance of the lagoon communities to BPA and DEHP contamination, related to the dominance of Chaetoceros spp., which could potentially be used as a bioindicator in bioassessment studies.
Collapse
Affiliation(s)
- Charaf M'rabet
- Research Group on Oceanography and Plankton Ecology, Tunisian National Agronomic Institute (INAT), IRESA - Carthage University, R.U 13ES36 - Marine Biology (University of Tunis-El Manar I), 43 Avenue Charles Nicolle, 1082 Tunis, Tunisia; UMR 9190 MARBEC IRD-Ifremer-CNRS-Université de Montpellier, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex, France.
| | - Ons Kéfi-Daly Yahia
- Research Group on Oceanography and Plankton Ecology, Tunisian National Agronomic Institute (INAT), IRESA - Carthage University, R.U 13ES36 - Marine Biology (University of Tunis-El Manar I), 43 Avenue Charles Nicolle, 1082 Tunis, Tunisia
| | - Douglas Couet
- UMR 9190 MARBEC IRD-Ifremer-CNRS-Université de Montpellier, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex, France
| | - Sonia Khadija Maïté Gueroun
- Laboratory of Aquatic Systems Biodiversity and Functioning, Faculty of Sciences of Bizerte, 7021 Zarzouna Bizerte, University of Carthage, Tunisia
| | - Olivier Pringault
- UMR 9190 MARBEC IRD-Ifremer-CNRS-Université de Montpellier, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex, France; Faculty of Sciences of Bizerte, 7021 Zarzouna Bizerte, University of Carthage, Tunisia
| |
Collapse
|
28
|
Mehta MJ, Kumar A. Ionic Liquid Stabilized Gelatin-Lignin Films: A Potential UV-Shielding Material with Excellent Mechanical and Antimicrobial Properties. Chemistry 2018; 25:1269-1274. [PMID: 30398292 DOI: 10.1002/chem.201803763] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Indexed: 11/10/2022]
Abstract
Significant research is currently underway to develop environmentally friendly UV-shielding materials. Herein, we have constructed choline citrate (a biobased ionic liquid, IL) stabilized homogeneous gelatin-lignin UV-shielding films with excellent antimicrobial and mechanical properties. The synthesis procedure of the films is less energy demanding, one pot, and sustainable in nature. Prepared films were characterized by mechanical and thermal analysis using UTM and TGA, respectively. ATR-IR and PXRD was employed to explore the possible formation of H-bonding between biopolymers and the IL and the change in crystallinity in films after addition of IL to the gelatin-lignin matrix. Surface morphology of prepared films has been studied using optical microscope, AFM, and field emission SEM (FE-SEM). Optical properties of prepared films were measured using UV/Vis spectroscopy. Antimicrobial activity of the prepared films was tested against Bacillus subtilis. Prepared biofilms showed a sun-protection factor (SPF) of up to ≈45.0, large elongation ≈200 %, and tensile strength ≈70 MPa, which are as good as those values exhibited by organic polymeric films, indicating a promising renewable-resources-based material for UV light blocking.
Collapse
Affiliation(s)
- Mohit J Mehta
- Salt and Marine Chemicals Division, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar, 364002, India
| | - Arvind Kumar
- Salt and Marine Chemicals Division, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar, 364002, India
| |
Collapse
|
29
|
Abdalkarim SYH, Yu HY, Wang C, Yang L, Guan Y, Huang L, Yao J. Sheet-like Cellulose Nanocrystal-ZnO Nanohybrids as Multifunctional Reinforcing Agents in Biopolyester Composite Nanofibers with Ultrahigh UV-Shielding and Antibacterial Performances. ACS APPLIED BIO MATERIALS 2018; 1:714-727. [DOI: 10.1021/acsabm.8b00188] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Somia Yassin Hussain Abdalkarim
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education and National Engineering Lab for Textile Fiber Materials & Processing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park Avenue 2 No. 928, Hangzhou 310018, China
| | - Hou-Yong Yu
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education and National Engineering Lab for Textile Fiber Materials & Processing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park Avenue 2 No. 928, Hangzhou 310018, China
| | - Chuang Wang
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education and National Engineering Lab for Textile Fiber Materials & Processing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park Avenue 2 No. 928, Hangzhou 310018, China
| | - Lili Yang
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education and National Engineering Lab for Textile Fiber Materials & Processing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park Avenue 2 No. 928, Hangzhou 310018, China
| | - Ying Guan
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education and National Engineering Lab for Textile Fiber Materials & Processing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park Avenue 2 No. 928, Hangzhou 310018, China
| | - Linxi Huang
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education and National Engineering Lab for Textile Fiber Materials & Processing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park Avenue 2 No. 928, Hangzhou 310018, China
| | - Juming Yao
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education and National Engineering Lab for Textile Fiber Materials & Processing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park Avenue 2 No. 928, Hangzhou 310018, China
| |
Collapse
|
30
|
Wang Y, Wang X, Li T, Ma P, Zhang S, Du M, Dong W, Xie Y, Chen M. Effects of Melanin on Optical Behavior of Polymer: From Natural Pigment to Materials Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13100-13106. [PMID: 29577714 DOI: 10.1021/acsami.8b02658] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Melanin is a kind of ubiquitous natural pigment, which serves a variety of protective functions in many organisms. In the present study, natural melanin and synthetic melanin nanoparticles (NPs) were systematically investigated for its potential application in polymeric optical materials. A significant short-wavelength shielding and high visible light transparency polymer nanocomposite was easily obtained via tuning the melanin particle size. In particular, the nanocomposite film with melanin NPs (diameter ≈ 15 nm) loading even as low as 1 wt % blocks most ultraviolet light below 340 nm and still keeps high visible light transparency (83%) in the visible spectrum. More importantly, because of the excellent photoprotection and radical scavenging capabilities of melanin, the resulting polymer nanocomposite exhibits outstanding photostability. In effect, such fantastic melanin NPs is promising for applications in various optical materials.
Collapse
Affiliation(s)
- Yang Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| | - Xuefei Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| | - Ting Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| | - Piming Ma
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| | - Shengwen Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| | - Mingliang Du
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| | - Weifu Dong
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| | - Yi Xie
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| | - Mingqing Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , 1800 Lihu Road , Wuxi 214122 , China
| |
Collapse
|
31
|
Development and Validation of an HPLC-DAD Method for the Simultaneous Extraction and Quantification of Bisphenol-A, 4-Hydroxybenzoic Acid, 4-Hydroxyacetophenone and Hydroquinone in Bacterial Cultures of Lactococcus lactis. SEPARATIONS 2018. [DOI: 10.3390/separations5010012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
|
32
|
Jiang L, Zhou M, Ding Y, Zhou Y, Dan Y. Aging induced ductile-brittle-ductile transition in bisphenol A polycarbonate. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1443-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
33
|
Wang Y, Su J, Li T, Ma P, Bai H, Xie Y, Chen M, Dong W. A Novel UV-Shielding and Transparent Polymer Film: When Bioinspired Dopamine-Melanin Hollow Nanoparticles Join Polymers. ACS APPLIED MATERIALS & INTERFACES 2017; 9:36281-36289. [PMID: 28945967 DOI: 10.1021/acsami.7b08763] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Ultraviolet (UV) light is known to be harmful to human health and cause organic materials to undergo photodegradation. In this Research Article, bioinspired dopamine-melanin solid nanoparticles (Dpa-s NPs) and hollow nanoparticles (Dpa-h NPs) as UV-absorbers were introduced to enhance the UV-shielding performance of polymer. First, Dpa-s NPs were synthesized through autoxidation of dopamine in alkaline aqueous solution. Dpa-h NPs were prepared by the spontaneous oxidative polymerization of dopamine solution onto polystyrene (PS) nanospheres template, followed by removal of the template. Poly(vinyl alcohol) (PVA)/Dpa nanocomposite films were subsequently fabricated by a simple casting solvent. UV irradiation protocols were set up, allowing selective study of the extra-shielding effects of Dpa-s versus Dpa-h NPs. In contrast to PVA/Dpa-s films, PVA/Dpa-h films exhibit stronger UV-shielding capabilities and can almost block the complete UV region (200-400 nm). The excellent UV-shielding performance of the PVA/Dpa-h films mainly arises from multiple absorption because of the hollow structure and large specific area of Dpa-h NPs. Moreover, the wall thickness of Dpa-h NPs can be simply controlled from 28 to 8 nm, depending on the ratio between PS and dopamine. The resulting films with Dpa-h NPs (wall thickness = ∼8 nm) maintained relatively high transparency to visible light because of the thinner wall thickness. The results indicate that the prepared Dpa-h NPs can be used as a novel UV absorber for next-generation transparent UV-shielding materials.
Collapse
Affiliation(s)
- Yang Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , 1800 Lihu Road, Wuxi 214122, China
| | - Jing Su
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , 1800 Lihu Road, Wuxi 214122, China
| | - Ting Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , 1800 Lihu Road, Wuxi 214122, China
| | - Piming Ma
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , 1800 Lihu Road, Wuxi 214122, China
| | - Huiyu Bai
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , 1800 Lihu Road, Wuxi 214122, China
| | - Yi Xie
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , 1800 Lihu Road, Wuxi 214122, China
| | - Mingqing Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , 1800 Lihu Road, Wuxi 214122, China
| | - Weifu Dong
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , 1800 Lihu Road, Wuxi 214122, China
| |
Collapse
|
34
|
Analysis of the inhibition of thermal degradation of molten polycarbonate at tool steel interfaces by thin TiAlN coatings. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.07.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
35
|
Mendonça da Rocha Oliveira L, Vedovello P, Paranhos CM. Polycarbonate/1-(2-hydroxyethyl)-2,3-dimethylimidazolium chloride composite membranes and short-range chain mobility analysis. J Appl Polym Sci 2017. [DOI: 10.1002/app.45117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Priscila Vedovello
- Department of Chemistry; Federal University of São Carlos; São Carlos São Paulo CEP 13565-905 Brazil
| | - Caio Marcio Paranhos
- Department of Chemistry; Federal University of São Carlos; São Carlos São Paulo CEP 13565-905 Brazil
| |
Collapse
|
36
|
Akbay İK, Özdemir T. Monomer migration and degradation of polycarbonate via UV-C irradiation within aquatic and atmospheric environments. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2016. [DOI: 10.1080/10601325.2016.1165999] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
37
|
Portu A, Rossini AE, Thorp SI, Curotto P, Pozzi ECC, Granell P, Golmar F, Cabrini RL, Martin GS. Simultaneous Observation of Cells and Nuclear Tracks from the Boron Neutron Capture Reaction by UV-C Sensitization of Polycarbonate. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2015; 21:796-804. [PMID: 26155721 DOI: 10.1017/s1431927615014348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The distribution of boron in tissue samples coming from boron neutron capture therapy protocols can be determined through the analysis of its autoradiography image on a nuclear track detector. A more precise knowledge of boron atom location on the microscopic scale can be attained by the observation of nuclear tracks superimposed on the sample image on the detector. A method to produce an "imprint" of cells cultivated on a polycarbonate detector was developed, based on the photodegradation properties of UV-C radiation on this material. Optimal conditions to generate an appropriate monolayer of Mel-J cells incubated with boronophenylalanine were found. The best images of both cells and nuclear tracks were obtained for a neutron fluence of 1013 cm-2, 6 h UV-C (254 nm) exposure, and 4 min etching time with a KOH solution. The imprint morphology was analyzed by both light and scanning electron microscopy. Similar samples, exposed to UV-A (360 nm) revealed no cellular imprinting. Etch pits were present only inside the cell imprints, indicating a preferential boron uptake (about threefold the incubation concentration). Comparative studies of boron absorption in different cell lines and in vitro evaluation of the effect of diverse boron compounds are feasible with this methodology.
Collapse
Affiliation(s)
- Agustina Portu
- 1Department of Radiobiology,National Atomic Energy Commission (CNEA),Av. General Paz 1499,B1650KNA,San Martín,Buenos Aires,Argentina
| | - Andrés Eugenio Rossini
- 3Nuclear Regulatory Authority (ARN),Libertador 8250,C1429BNP,Ciudad Autónoma de Buenos Aires,Argentina
| | - Silvia Inés Thorp
- 4Department of Instrumentation and Control,CNEA,Presbítero Juan González Aragón,B1802AYA,Ezeiza,Buenos Aires,Argentina
| | - Paula Curotto
- 5Department of Research and Production Reactors,CNEA,Presbítero Juan González Aragón,B1802AYA,Ezeiza,Buenos Aires,Argentina
| | - Emiliano César Cayetano Pozzi
- 5Department of Research and Production Reactors,CNEA,Presbítero Juan González Aragón,B1802AYA,Ezeiza,Buenos Aires,Argentina
| | - Pablo Granell
- 6Micro and Nanotechnology Centre of the Bicentennial (CNMB),National Institute of Industrial Technology (INTI),Av. Gral. Paz 5445,Ed. 42,B1650JKA,San Martín,Buenos Aires,Argentina
| | - Federico Golmar
- 2National Research Council (CONICET),Av. Rivadavia 1917,C1033AAJ,Ciudad Autónoma de Buenos Aires,Argentina
| | - Rómulo Luis Cabrini
- 1Department of Radiobiology,National Atomic Energy Commission (CNEA),Av. General Paz 1499,B1650KNA,San Martín,Buenos Aires,Argentina
| | - Gisela Saint Martin
- 1Department of Radiobiology,National Atomic Energy Commission (CNEA),Av. General Paz 1499,B1650KNA,San Martín,Buenos Aires,Argentina
| |
Collapse
|
38
|
Wen G, Wu S, Li B, Dai C, Su DS. Active Sites and Mechanisms for Direct Oxidation of Benzene to Phenol over Carbon Catalysts. Angew Chem Int Ed Engl 2015; 54:4105-9. [DOI: 10.1002/anie.201410093] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 12/02/2014] [Indexed: 11/06/2022]
|
39
|
Wen G, Wu S, Li B, Dai C, Su DS. Aktive Zentren und Mechanismen der direkten Oxidation von Benzol zu Phenol an Kohlenstoffkatalysatoren. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201410093] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
40
|
Le Bail N, Lionti K, Benayoun S, Pavan S, Thompson L, Gervais C, Dubois G, Toury B. Scratch-resistant sol–gel coatings on pristine polycarbonate. NEW J CHEM 2015. [DOI: 10.1039/c5nj00426h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel strategy to enhance scratch resistance via the incorporation of ZTP onto silica-based sol–gel coating is proposed.
Collapse
Affiliation(s)
- Nicolas Le Bail
- Laboratoire de Tribologie et Dynamique des Systèmes
- Ecole Centrale de Lyon
- Ecully
- France
- Laboratoire des Multimatériaux et Interfaces
| | | | - Stéphane Benayoun
- Laboratoire de Tribologie et Dynamique des Systèmes
- Ecole Centrale de Lyon
- Ecully
- France
| | - Sophie Pavan
- Laboratoire de Tribologie et Dynamique des Systèmes
- Ecole Centrale de Lyon
- Ecully
- France
| | | | - Christel Gervais
- Sorbonne Universités
- UPMC Univ. Paris 06
- CNRS
- Collège de France
- UMR 7574
| | | | - Bérangère Toury
- Laboratoire des Multimatériaux et Interfaces
- UMR 5615
- Université de Lyon
- Villeurbanne
- France
| |
Collapse
|
41
|
Batchu SR, Ramirez CE, Gardinali PR. Stability of dioctyl sulfosuccinate (DOSS) towards hydrolysis and photodegradation under simulated solar conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 481:260-265. [PMID: 24602910 DOI: 10.1016/j.scitotenv.2014.02.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 02/03/2014] [Accepted: 02/03/2014] [Indexed: 06/03/2023]
Abstract
Dioctyl sulfosuccinate (DOSS) is one of the main components of Corexit® EC9500A, a chemical dispersant formulation used at the surface and at depth during the response to the Deepwater Horizon incident. Despite being a high volume use chemical, data on its environmental stability are scarce. Hydrolysis and photodegradation of DOSS in both pure water and seawater were reported in the present study. DOSS photodegraded much faster under ultraviolet light source (254 nm, with half-life in hours) compared to relevant environmental light sources i.e., 350 nm and solar simulator (with half-lives in days). LC/MS-MS analysis of hydrolysis and photo-irradiated samples showed the presence of a common degradation product. MS/MS fragmentation of that product indicated a substitution of an octyl group by a hydroxyl group with a corresponding formula of C12H21O7S, which was confirmed by HRMS detection (Q-TOF, m/z 309.1017, +1.29 ppm).
Collapse
Affiliation(s)
- Sudha Rani Batchu
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA; Southeast Environmental Research Center, Florida International University, Miami, FL, USA.
| | - Cesar E Ramirez
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA; Southeast Environmental Research Center, Florida International University, Miami, FL, USA.
| | - Piero R Gardinali
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA; Southeast Environmental Research Center, Florida International University, Miami, FL, USA.
| |
Collapse
|
42
|
Ramesh V, Biswal M, Mohanty S, Nayak SK. Recycling of engineering plastics from waste electrical and electronic equipments: influence of virgin polycarbonate and impact modifier on the final performance of blends. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2014; 32:379-388. [PMID: 24695435 DOI: 10.1177/0734242x14528404] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study is focused on the recovery and recycling of plastics waste, primarily polycarbonate, poly(acrylonitrile-butadiene-styrene) and high impact polystyrene, from end-of-life waste electrical and electronic equipments. Recycling of used polycarbonate, acrylonitrile-butadiene-styrene, polycarbonate/acrylonitrile-butadiene-styrene and acrylonitrile-butadiene-styrene/high impact polystrene material was carried out using material recycling through a melt blending process. An optimized blend composition was formulated to achieve desired properties from different plastics present in the waste electrical and electronic equipments. The toughness of blended plastics was improved with the addition of 10 wt% of virgin polycarbonate and impact modifier (ethylene-acrylic ester-glycidyl methacrylate). The mechanical, thermal, dynamic-mechanical and morphological properties of recycled blend were investigated. Improved properties of blended plastics indicate better miscibility in the presence of a compatibilizer suitable for high-end application.
Collapse
Affiliation(s)
- V Ramesh
- 1Central Institute of Plastics Engineering and Technology (CIPET), Chennai, India
| | | | | | | |
Collapse
|
43
|
Jackson JM, Witek MA, Hupert ML, Brady C, Pullagurla S, Kamande J, Aufforth RD, Tignanelli CJ, Torphy RJ, Yeh JJ, Soper SA. UV activation of polymeric high aspect ratio microstructures: ramifications in antibody surface loading for circulating tumor cell selection. LAB ON A CHIP 2014; 14:106-17. [PMID: 23900277 PMCID: PMC4182936 DOI: 10.1039/c3lc50618e] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The need to activate thermoplastic surfaces using robust and efficient methods has been driven by the fact that replication techniques can be used to produce microfluidic devices in a high production mode and at low cost, making polymer microfluidics invaluable for in vitro diagnostics, such as circulating tumor cell (CTC) analysis, where device disposability is critical to mitigate artifacts associated with sample carryover. Modifying the surface chemistry of thermoplastic devices through activation techniques can be used to increase the wettability of the surface or to produce functional scaffolds to allow for the covalent attachment of biologics, such as antibodies for CTC recognition. Extensive surface characterization tools were used to investigate UV activation of various surfaces to produce uniform and high surface coverage of functional groups, such as carboxylic acids in microchannels of different aspect ratios. We found that the efficiency of the UV activation process is highly dependent on the microchannel aspect ratio and the identity of the thermoplastic substrate. Colorimetric assays and fluorescence imaging of UV-activated microchannels following EDC/NHS coupling of Cy3-labeled oligonucleotides indicated that UV-activation of a PMMA microchannel with an aspect ratio of ~3 was significantly less efficient toward the bottom of the channel compared to the upper sections. This effect was a consequence of the bulk polymer's damping of the modifying UV radiation due to absorption artifacts. In contrast, this effect was less pronounced for COC. Moreover, we observed that after thermal fusion bonding of the device's cover plate to the substrate, many of the generated functional groups buried into the bulk rendering them inaccessible. The propensity of this surface reorganization was found to be higher for PMMA compared to COC. As an example of the effects of material and microchannel aspect ratios on device functionality, thermoplastic devices for the selection of CTCs from whole blood were evaluated, which required the immobilization of monoclonal antibodies to channel walls. From our results, we concluded the CTC yield and purity of isolated CTCs were dependent on the substrate material with COC producing the highest clinical yields for CTCs as well as better purities compared to PMMA.
Collapse
|
44
|
Rizzarelli P, Carroccio S. Modern mass spectrometry in the characterization and degradation of biodegradable polymers. Anal Chim Acta 2014; 808:18-43. [DOI: 10.1016/j.aca.2013.11.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 10/18/2013] [Accepted: 11/04/2013] [Indexed: 01/06/2023]
|
45
|
Baick IH, Ye Y, Luciani CV, Ahn YG, Song KH, Choi KY. UltraHigh Molecular Weight Nonlinear Polycarbonates Synthesized in Microlayers. Ind Eng Chem Res 2013. [DOI: 10.1021/ie4029544] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- In Hak Baick
- Department
of Chemical and Biomolecular Engineering, University of Maryland, College
Park, Maryland 20742, United States
| | - Yuesheng Ye
- Department
of Chemical and Biomolecular Engineering, University of Maryland, College
Park, Maryland 20742, United States
| | - Carla Vanesa Luciani
- Department
of Chemical and Biomolecular Engineering, University of Maryland, College
Park, Maryland 20742, United States
| | - Yun Gyong Ahn
- Seoul
Center, Korea Basic Science Institute, 126-16, 5th Street Anam-dong, Seongbuk-Gu, Seoul, Korea 136-701
| | - Kwang Ho Song
- Department
of Chemical and Biological Engineering, Korea University, Anam-dong, Seongbuk-Gu, Seoul, Korea 136-713
| | - Kyu Yong Choi
- Department
of Chemical and Biomolecular Engineering, University of Maryland, College
Park, Maryland 20742, United States
| |
Collapse
|
46
|
Gajowik A, Radzikowska J, Dobrzyńska MM. Genotoxic effects of bisphenol A on somatic cells of female mice, alone and in combination with X-rays. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2013; 757:120-4. [DOI: 10.1016/j.mrgentox.2013.07.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 07/15/2013] [Accepted: 07/23/2013] [Indexed: 01/21/2023]
|
47
|
Batchu SR, Quinete N, Panditi VR, Gardinali PR. Online solid phase extraction liquid chromatography tandem mass spectrometry (SPE-LC-MS/MS) method for the determination of sucralose in reclaimed and drinking waters and its photo degradation in natural waters from South Florida. Chem Cent J 2013; 7:141. [PMID: 23965251 PMCID: PMC3844442 DOI: 10.1186/1752-153x-7-141] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 08/15/2013] [Indexed: 11/29/2022] Open
Abstract
Background Sucralose has gained popularity as a low calorie artificial sweetener worldwide. Due to its high stability and persistence, sucralose has shown widespread occurrence in environmental waters, at concentrations that could reach up to several μg/L. Previous studies have used time consuming sample preparation methods (offline solid phase extraction/derivatization) or methods with rather high detection limits (direct injection) for sucralose analysis. This study described a faster and sensitive analytical method for the determination of sucralose in environmental samples. Results An online SPE-LC–MS/MS method was developed, being capable to quantify sucralose in 12 minutes using only 10 mL of sample, with method detection limits (MDLs) of 4.5 ng/L, 8.5 ng/L and 45 ng/L for deionized water, drinking and reclaimed waters (1:10 diluted with deionized water), respectively. Sucralose was detected in 82% of the reclaimed water samples at concentrations reaching up to 18 μg/L. The monthly average for a period of one year was 9.1 ± 2.9 μg/L. The calculated mass loads per capita of sucralose discharged through WWTP effluents based on the concentrations detected in wastewaters in the U. S. is 5.0 mg/day/person. As expected, the concentrations observed in drinking water were much lower but still relevant reaching as high as 465 ng/L. In order to evaluate the stability of sucralose, photodegradation experiments were performed in natural waters. Significant photodegradation of sucralose was observed only in freshwater at 254 nm. Minimal degradation (<20%) was observed for all matrices under more natural conditions (350 nm or solar simulator). The only photolysis product of sucralose identified by high resolution mass spectrometry was a de-chlorinated molecule at m/z 362.0535, with molecular formula C12H20Cl2O8. Conclusions Online SPE LC-APCI/MS/MS developed in the study was applied to more than 100 environmental samples. Sucralose was frequently detected (>80%) indicating that the conventional treatment process employed in the sewage treatment plants is not efficient for its removal. Detection of sucralose in drinking waters suggests potential contamination of surface and ground waters sources with anthropogenic wastewater streams. Its high resistance to photodegradation, minimal sorption and high solubility indicate that sucralose could be a good tracer of anthropogenic wastewater intrusion into the environment.
Collapse
Affiliation(s)
- Sudha Rani Batchu
- Department of Chemistry and Biochemistry, Florida International University, 3000 NE 151st ST, FIU Biscayne Bay Campus, MSB-356, North Miami, FL 33181, USA.
| | | | | | | |
Collapse
|
48
|
|
49
|
Yonghao P, Mingjiao Y, Shimin H, Weibin G, Yi D. Study on the changing regularity of structure and properties of PC aged outdoor in western areas of China. J Appl Polym Sci 2012. [DOI: 10.1002/app.36305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
50
|
Pickett JE. Influence of photo-Fries reaction products on the photodegradation of bisphenol-A polycarbonate. Polym Degrad Stab 2011. [DOI: 10.1016/j.polymdegradstab.2011.08.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|