1
|
Shen Y, Son J, Yu XY. ToF-SIMS evaluation of PEG-related mass peaks and applications in PEG detection in cosmetic products. Sci Rep 2024; 14:14980. [PMID: 38951137 PMCID: PMC11217440 DOI: 10.1038/s41598-024-65504-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 06/20/2024] [Indexed: 07/03/2024] Open
Abstract
Polyethylene glycols (PEGs) are used in industrial, medical, health care, and personal care applications. The cycling and disposal of synthetic polymers like PEGs pose significant environmental concerns. Detecting and monitoring PEGs in the real world calls for immediate attention. This study unveils the efficacy of time-of-flight secondary ion mass spectrometry (ToF-SIMS) as a reliable approach for precise analysis and identification of reference PEGs and PEGs used in cosmetic products. By comparing SIMS spectra, we show remarkable sensitivity in pinpointing distinctive ion peaks inherent to various PEG compounds. Moreover, the employment of principal component analysis effectively discriminates compositions among different samples. Notably, the application of SIMS two-dimensional image analysis visually portrays the spatial distribution of various PEGs as reference materials. The same is observed in authentic cosmetic products. The application of ToF-SIMS underscores its potential in distinguishing PEGs within intricate environmental context. ToF-SIMS provides an effective solution to studying emerging environmental challenges, offering straightforward sample preparation and superior detection of synthetic organics in mass spectral analysis. These features show that SIMS can serve as a promising alternative for evaluation and assessment of PEGs in terms of the source, emission, and transport of anthropogenic organics.
Collapse
Affiliation(s)
- Yanjie Shen
- College of Biology and Oceanography, Weifang University, 5147 Dongfeng East Street, Weifang, 261061, Shandong, China
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - Jiyoung Son
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Xiao-Ying Yu
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA.
| |
Collapse
|
2
|
Zhang J, Jin F, Peng R, Ge J, Guo Y, Qiu Y, Zhou R, Ge Z. High Efficiency over 18.6% of Organic Solar Cells Enabled by PEDOT:PSS/Br-2PACz Dual-Anode Interface. ACS APPLIED MATERIALS & INTERFACES 2024; 16:9117-9125. [PMID: 38330209 DOI: 10.1021/acsami.3c17981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
Organic solar cells (OSCs) with high performance were prepared using poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and [2-(3,6-dibromo-9H-carbazol-9-yl)ethyl]phosphonic acid (Br-2PACz) double-layer films as the anode interface. By spin-coating a layer of Br-2PACz on PEDOT:PSS to form a PEDOT:PSS/Br-2PACz dual-anode interface, both the Jsc and FF of the device can be increased simultaneously, resulting in a high Jsc of 27.84 mA cm-2 and a high FF of 78.18%. The promising result indicates that the PEDOT:PSS/Br-2PACz dual-anode interface is an effective way to improve the performance of OSCs. The improvement of device performance is mainly attributed to (1) improved interface conductivity; (2) increased hole mobility and more balanced carrier transport efficiency; and (3) optimized morphology, which well explains the increase of Jsc and FF of the device. In addition, the OSC based on the PEDOT:PSS/Br-2PACz dual-anode interface exhibits exceptional stability, as it can maintain 94.7% of its initial efficiency even after 500 h of storage in a nitrogen environment. This work provides a promising strategy for improving the efficiency and stability of OSCs by dual-anode interface modulation.
Collapse
Affiliation(s)
- Jinna Zhang
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Ningbo 315201, P. R. China
- Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215123, P. R. China
| | - Fei Jin
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Ningbo 315201, P. R. China
| | - Ruixiang Peng
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Ningbo 315201, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jinfeng Ge
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Ningbo 315201, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yuntong Guo
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Ningbo 315201, P. R. China
| | - Yi Qiu
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Ningbo 315201, P. R. China
| | - Rong Zhou
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Ningbo 315201, P. R. China
| | - Ziyi Ge
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, Ningbo 315201, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| |
Collapse
|
3
|
Wang M, Wang S, Zhang C, Ma M, Yan B, Hu X, Shao T, Piao Y, Jin L, Gao J. Microstructure Formation and Characterization of Long-Acting Injectable Microspheres: The Gateway to Fully Controlled Drug Release Pattern. Int J Nanomedicine 2024; 19:1571-1595. [PMID: 38406600 PMCID: PMC10888034 DOI: 10.2147/ijn.s445269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 01/24/2024] [Indexed: 02/27/2024] Open
Abstract
Long-acting injectable microspheres have been on the market for more than three decades, but if calculated on the brand name, only 12 products have been approved by the FDA due to numerous challenges in achieving a fully controllable drug release pattern. Recently, more and more researches on the critical factors that determine the release kinetics of microspheres shifted from evaluating the typical physicochemical properties to exploring the microstructure. The microstructure of microspheres mainly includes the spatial distribution and the dispersed state of drug, PLGA and pores, which has been considered as one of the most important characteristics of microspheres, especially when comparative characterization of the microstructure (Q3) has been recommended by the FDA for the bioequivalence assessment. This review extracted the main variables affecting the microstructure formation from microsphere formulation compositions and preparation processes and highlighted the latest advances in microstructure characterization techniques. The further understanding of the microsphere microstructure has significant reference value for the development of long-acting injectable microspheres, particularly for the development of the generic microspheres.
Collapse
Affiliation(s)
- Mengdi Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| | - Shan Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| | - Changhao Zhang
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Ming Ma
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| | - Bohua Yan
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| | - Xinming Hu
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Tianjiao Shao
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Yan Piao
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Lili Jin
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Jing Gao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| |
Collapse
|
4
|
Wu Y, Wang T, Fay JDB, Zhang L, Hirth S, Hankett J, Chen Z. Silane Effects on Adhesion Enhancement of 2K Polyurethane Adhesives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:19016-19026. [PMID: 38085956 DOI: 10.1021/acs.langmuir.3c03166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
With excellent properties such as great flexibility, outstanding chemical resistance, and superb mechanical strength, two-part polyurethane (2K PU) adhesives have been widely applied in many applications, including those in transportation and construction. Despite the extensive use, their adhesion to nonpolar polymer substrates still needs to be improved and has been widely studied. The incorporation of silane molecules and the use of plasma treatment on substrate surfaces are two popular methods to increase the adhesion of 2K PU adhesives, but their detailed adhesion enhancement mechanisms are still largely unknown. In this research, sum frequency generation (SFG) vibrational spectroscopy was used to probe the influence of added or coated silanes on the interfacial structure at the buried polypropylene (PP)/2K PU adhesive interface in situ. How plasma treatment on PP could improve adhesion was also investigated. To achieve maximum adhesion, two methods to involve silanes were studied. In the first method, silanes were directly mixed with the 2K PU adhesive before use. In the second method, silane molecules were spin-coated onto the PP substrate before the PU adhesive applied. It was found that the first method could not improve the 2K PU adhesion to PP, while the second method could substantially enhance such adhesion. SFG studies demonstrated that with the second method silane molecules chemically reacted at the interface to connect PP and 2K PU adhesive to improve the adhesion. With the first method, silane molecules could not effectively diffuse to the interface to enhance adhesion. In this research, plasma treatment was also found to be a useful method to improve the adhesion of the 2K PU adhesive to nonpolar polymer materials.
Collapse
Affiliation(s)
- Yuchen Wu
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
- Department of Macromolecular Science and Engineering, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Tianle Wang
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Jonathan D B Fay
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Lu Zhang
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Sabine Hirth
- Material Physics and Analytics - B007, BASF SE, Carl-Bosch-Strasse 38, 67056 Ludwigshafen am Rhein, Germany
| | - Jeanne Hankett
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Zhan Chen
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
- Department of Macromolecular Science and Engineering, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
5
|
Plath AMS, Huber S, Alfarano SR, Abbott DF, Hu M, Mougel V, Isa L, Ferguson SJ. Co-Electrospun Poly(ε-Caprolactone)/Zein Articular Cartilage Scaffolds. Bioengineering (Basel) 2023; 10:771. [PMID: 37508797 PMCID: PMC10376865 DOI: 10.3390/bioengineering10070771] [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: 06/03/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/30/2023] Open
Abstract
Osteoarthritis scaffold-based grafts fail because of poor integration with the surrounding soft tissue and inadequate tribological properties. To circumvent this, we propose electrospun poly(ε-caprolactone)/zein-based scaffolds owing to their biomimetic capabilities. The scaffold surfaces were characterized using Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, static water contact angles, and profilometry. Scaffold biocompatibility properties were assessed by measuring protein adsorption (Bicinchoninic Acid Assay), cell spreading (stained F-actin), and metabolic activity (PrestoBlue™ Cell Viability Reagent) of primary bovine chondrocytes. The data show that zein surface segregation in the membranes not only completely changed the hydrophobic behavior of the materials, but also increased the cell yield and metabolic activity on the scaffolds. The surface segregation is verified by the infrared peak at 1658 cm-1, along with the presence and increase in N1 content in the survey XPS. This observation could explain the decrease in the water contact angles from 125° to approximately 60° in zein-comprised materials and the decrease in the protein adsorption of both bovine serum albumin and synovial fluid by half. Surface nano roughness in the PCL/zein samples additionally benefited the radial spreading of bovine chondrocytes. This study showed that co-electrospun PCL/zein scaffolds have promising surface and biocompatibility properties for use in articular-tissue-engineering applications.
Collapse
Affiliation(s)
| | - Stephanie Huber
- Laboratory for Orthopaedic Technology, ETH Zurich, 8092 Zurich, Switzerland
| | - Serena R Alfarano
- Laboratory of Food and Soft Materials, ETH Zurich, 8092 Zurich, Switzerland
| | - Daniel F Abbott
- Laboratory of Inorganic Chemistry, ETH Zurich, 8093 Zurich, Switzerland
| | - Minghan Hu
- Laboratory for Soft Materials and Interfaces, ETH Zurich, 8093 Zurich, Switzerland
| | - Victor Mougel
- Laboratory of Inorganic Chemistry, ETH Zurich, 8093 Zurich, Switzerland
| | - Lucio Isa
- Laboratory for Soft Materials and Interfaces, ETH Zurich, 8093 Zurich, Switzerland
| | - Stephen J Ferguson
- Laboratory for Orthopaedic Technology, ETH Zurich, 8092 Zurich, Switzerland
| |
Collapse
|
6
|
Wu Y, Wang T, Gao J, Zhang L, Fay JDB, Hirth S, Hankett J, Chen Z. Molecular Behavior of 1K Polyurethane Adhesive at Buried Interfaces: Plasma Treatment, Annealing, and Adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:3273-3285. [PMID: 36808974 DOI: 10.1021/acs.langmuir.2c03084] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
One-part (1K) polyurethane (PU) adhesive has excellent bulk strength and environmental resistance. It is therefore widely used in many fields, such as construction, transportation, and flexible lamination. However, when contacting non-polar polymer materials, the poor adhesion of 1K PU adhesive may not be able to support its outdoor applications. To solve this problem, plasma treatment of the non-polar polymer surface has been utilized to improve adhesion between the polymer and 1K PU adhesive. The detailed mechanisms of adhesion enhancement of the 1K PU adhesive caused by plasma treatment on polymer substrates have not been studied extensively because adhesion is a property of buried interfaces which are difficult to probe. In this study, sum frequency generation (SFG) vibrational spectroscopy was used to investigate the buried PU/polypropylene (PP) interfaces in situ nondestructively. Fourier-transform infrared spectroscopy, the X-ray diffraction technique, and adhesion tests were used as supplemental methods to SFG in the study. The 1K PU adhesive is a moisture-curing adhesive and usually needs several days to be fully cured. Here, time-dependent SFG experiments were conducted to monitor the molecular behaviors at the buried 1K PU adhesive/PP interfaces during the curing process. It was found that the PU adhesives underwent rearrangement during the curing process with functional groups gradually becoming ordered at the interface. Stronger adhesion between the plasma-treated PP substrate and the 1K PU adhesive was observed, which was achieved by the interfacial chemical reactions and a more rigid interface. Annealing the samples increased the reaction speed and enhanced the bulk PU strength with higher crystallinity. In this research, molecular mechanisms of adhesion enhancement of the 1K PU adhesive caused by the plasma treatment on PP and by annealing the PU/PP samples were elucidated.
Collapse
Affiliation(s)
- Yuchen Wu
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Tianle Wang
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jinpeng Gao
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Lu Zhang
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Jonathan D B Fay
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Sabine Hirth
- BASF SE, RAA/OS-B007, Carl-Bosch-Strasse 38, 67056 Ludwigshafen am Rhein, Germany
| | - Jeanne Hankett
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Zhan Chen
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
7
|
Fakhri V, Jafari A, Zeraatkar A, Rahimi M, Hadian H, Nouranian S, Kruppke B, Khonakdar HA. Introducing photo-crosslinked bio-nanocomposites based on polyvinylidene fluoride/poly(glycerol azelaic acid)- g-glycidyl methacrylate for bone tissue engineering. J Mater Chem B 2023; 11:452-470. [PMID: 36530136 DOI: 10.1039/d2tb01628a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
As a glycerol-based polyester, poly(glycerol azelaic acid) (PGAz) has shown great potential for biomedical applications, such as tissue engineering. However, it tends to show low mechanical strength and a relatively fast biodegradation rate, limiting its capability of mimicking and supporting a broad range of hard tissues such as bone. Moreover, the typical thermal curing process of poly(glycerol-co-diacids) is one of their drawbacks. To overcome these limitations, glycidyl methacrylate (GMA) moieties were first grafted on the backbone of PGAz herein to achieve a UV-curable PGAz-g-GMA (PGAG) resin. Then polyvinylidene fluoride (PVDF), nano-hydroxyapatite, and Cloisite Na+ nanoclay were used to fabricate photo-crosslinked PGAG/PVDF nanocomposites with efficient properties to mimic various hard tissues. Our results demonstrated that all nanocomposites possessed a semi-crystalline structure with noticeable PVDF β-phase fraction. The scaffolds yielded Young's modulus, ultimate tensile strength, and elongation at break of 15-24 MPa, 13-15 MPa, and 50-65%, respectively that could meet the requirements for supporting cancellous bone tissue. The presence of nanofillers improved the hydrophilicity and slightly accelerated the biodegradation rate of the scaffolds. Additionally, it was illustrated that the scaffolds had no noticeable in vitro cytotoxicity, and mouse fibroblast L929 cells and osteoblast MG-63 cells attached to and proliferated on their surface desirably. Our findings indicate that the PGAG/PVDF blend and its nanocomposites could be high-potential candidates for a range of hard tissues, specifically cancellous bones.
Collapse
Affiliation(s)
- Vafa Fakhri
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Aliakbar Jafari
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Ali Zeraatkar
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Maryam Rahimi
- Department of Chemical Engineering, Faculty of Technical and Engineering, Islamic Azad University, Central Tehran Branch, Tehran, Iran
| | - Hooriyeh Hadian
- Department of Chemical Engineering, Faculty of Technical and Engineering, Islamic Azad University, Central Tehran Branch, Tehran, Iran
| | - Sasan Nouranian
- Department of Chemical Engineering, University of Mississippi, University, MS 38677, USA
| | - Benjamin Kruppke
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, 01069 Dresden, Germany
| | - Hossein Ali Khonakdar
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, 01069 Dresden, Germany.,Department of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran.
| |
Collapse
|
8
|
Prasad A, Salim NV, Mozetič M, Kailas L, Thomas S. Time‐of‐flight secondary ion mass spectrometric analysis of polymer surfaces: A review. J Appl Polym Sci 2022. [DOI: 10.1002/app.52286] [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)
- Ananthu Prasad
- Faculty of Science, Engineering and Technology Swinburne University of Technology Victoria Australia
- International and Inter University Centre for Nanoscience and Nanotechnology (IIUCNN), Mahatma Gandhi University Kottayam Kerala India
| | - Nisa V. Salim
- Faculty of Science, Engineering and Technology Swinburne University of Technology Victoria Australia
| | - Miran Mozetič
- Department of Surface Engineering Jožef Stefan Institute Ljubljana Slovenia
| | | | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology (IIUCNN), Mahatma Gandhi University Kottayam Kerala India
- School of Chemical Sciences, M G University Kottayam Kerala India
- Department of Chemical Sciences University of Johannesburg South Africa
| |
Collapse
|
9
|
Bottoms CM, Terlier T, Stein GE, Doxastakis M. Ion Diffusion in Chemically Amplified Resists. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher M. Bottoms
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Tanguy Terlier
- Shared Equipment Authority, Rice University, Houston, Texas 77005, United States
| | - Gila E. Stein
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
10
|
Kern S, Kern C, Pradja MM, Düring R, Rohnke M. Spatially resolved indiffusion behavior of Cu
2+
and Ni
2+
in polypropylene. J Appl Polym Sci 2020. [DOI: 10.1002/app.49655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Stefanie Kern
- Institute of Physical Chemistry Justus Liebig University Giessen Giessen Germany
| | - Christine Kern
- Institute of Physical Chemistry Justus Liebig University Giessen Giessen Germany
| | - Mark Melvin Pradja
- Institute of Physical Chemistry Justus Liebig University Giessen Giessen Germany
| | - Rolf‐Alexander Düring
- Institute of Soil Science and Soil Conservation, Research Center for Biosystems, Land Use and Nutrition Justus Liebig University Giessen Giessen Germany
- Center for Materials Research Justus Liebig University Giessen Giessen Germany
| | - Marcus Rohnke
- Institute of Physical Chemistry Justus Liebig University Giessen Giessen Germany
- Center for Materials Research Justus Liebig University Giessen Giessen Germany
| |
Collapse
|
11
|
Fultz BA, Terlier T, Dunoyer de Segonzac B, Verduzco R, Kennemur JG. Nanostructured Films of Oppositely Charged Domains from Self-Assembled Block Copolymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00707] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Brandon A. Fultz
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Tanguy Terlier
- SIMS Laboratory, Shared Equipment Authority, Rice University, MS 126, 6100 Main Street, Houston, Texas 77005, United States
| | - Beatriz Dunoyer de Segonzac
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Rafael Verduzco
- Department of Chemical and Biomolecular Engineering, Rice University, MS 362, 6100 Main Street, Houston, Texas 77005, United States
| | - Justin G. Kennemur
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| |
Collapse
|
12
|
Romano A, Angelini A, Rossegger E, Palmara G, Castellino M, Frascella F, Chiappone A, Chiadò A, Sangermano M, Schlögl S, Roppolo I. Laser‐Triggered Writing and Biofunctionalization of Thiol‐Ene Networks. Macromol Rapid Commun 2020; 41:e2000084. [DOI: 10.1002/marc.202000084] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Angelo Romano
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Angelo Angelini
- Advanced Materials Metrology and Life SciencesIstituto Nazionale di Ricerca Metrologica Strada delle Cacce 91 Torino 10135 Italy
| | - Elisabeth Rossegger
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
| | - Gianluca Palmara
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Micaela Castellino
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Francesca Frascella
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Annalisa Chiappone
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Alessandro Chiadò
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Marco Sangermano
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Sandra Schlögl
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
| | - Ignazio Roppolo
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| |
Collapse
|
13
|
Kallepalli DLN, Godfrey ATK, Walia J, Variola F, Staudte A, Zhang C, Jakubek ZJ, Corkum PB. Multiphoton laser-induced confined chemical changes in polymer films. OPTICS EXPRESS 2020; 28:11267-11279. [PMID: 32403641 DOI: 10.1364/oe.389215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
We report ultrafast-laser-induced photochemical, structural, and morphological changes in a polyimide film irradiated at the polymer-glass interface in back-incident geometry. Back-illumination creates locally hot material at the interface leading to a confined photochemical change at the interface and a morphological change through a blister formation. The laser-induced photochemical changes in polyimide resulted in new absorption and luminescence properties in the visible region. The laser-treated polyimide exhibited photoluminescence anisotropy resulting from formation of ordered polymer upon irradiation by linearly polarized ultrashort laser pulses. Confocal fluorescence microscopy resulted in similar observations to the bulk. Reflection-absorption infrared spectroscopy and X-ray photoelectron spectroscopy together indicated confinement of laser-induced chemical changes at the interface.
Collapse
|
14
|
Jabłońska M, Reißaus S, Henning S, Menzel M, Hähnel A, Klehm J, Hirsch U, Heilmann A. From the surface to the bulk: A comparison of methods for the microanalysis of an immiscible polymer blend. Micron 2019; 124:102685. [DOI: 10.1016/j.micron.2019.102685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 05/21/2019] [Accepted: 05/22/2019] [Indexed: 11/26/2022]
|
15
|
Lv Y, Batool A, Wei Y, Xin Q, Boddula R, Jan SU, Akram MZ, Tian L, Guo B, Gong JR. Homogeneously Distributed NiFe Alloy Nanoparticles on 3D Carbon Fiber Network as a Bifunctional Electrocatalyst for Overall Water Splitting. ChemElectroChem 2019. [DOI: 10.1002/celc.201900185] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yanlong Lv
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Aisha Batool
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
- University of CAS Beijing 100049 People's Republic of China
| | - Yuxuan Wei
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
- University of CAS Beijing 100049 People's Republic of China
| | - Qi Xin
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Rajender Boddula
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Saad Ullah Jan
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
- University of CAS Beijing 100049 People's Republic of China
| | - Muhammad Zain Akram
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
- University of CAS Beijing 100049 People's Republic of China
| | - Liangqiu Tian
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
- University of CAS Beijing 100049 People's Republic of China
| | - Beidou Guo
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
- University of CAS Beijing 100049 People's Republic of China
| | - Jian Ru Gong
- Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology Beijing 100190 P. R. China
| |
Collapse
|
16
|
Duque-Sanchez L, Brack N, Postma A, Meagher L, Pigram PJ. Engineering the Biointerface of Electrospun 3D Scaffolds with Functionalized Polymer Brushes for Enhanced Cell Binding. Biomacromolecules 2018; 20:813-825. [DOI: 10.1021/acs.biomac.8b01427] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lina Duque-Sanchez
- Centre for Materials and Surface Science and Department of Chemistry and Physics, La Trobe University, Melbourne, Victoria 3086, Australia
- CSIRO Manufacturing, Bayview Avenue, Clayton, Vic 3168, Australia
| | - Narelle Brack
- Centre for Materials and Surface Science and Department of Chemistry and Physics, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Almar Postma
- CSIRO Manufacturing, Bayview Avenue, Clayton, Vic 3168, Australia
| | - Laurence Meagher
- Monash Institute of Medical Engineering and Department of Materials Science and Engineering, Monash University, Clayton, Vic 3800, Australia
| | - Paul J. Pigram
- Centre for Materials and Surface Science and Department of Chemistry and Physics, La Trobe University, Melbourne, Victoria 3086, Australia
| |
Collapse
|
17
|
Trindade GF, Abel ML, Lowe C, Tshulu R, Watts JF. A Time-of-Flight Secondary Ion Mass Spectrometry/Multivariate Analysis (ToF-SIMS/MVA) Approach To Identify Phase Segregation in Blends of Incompatible but Extremely Similar Resins. Anal Chem 2018; 90:3936-3941. [PMID: 29488747 DOI: 10.1021/acs.analchem.7b04877] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work presents a data analysis extension to a well-established methodology for the assessment of organic coatings using imaging time-of-flight secondary ion mass spectrometry (ToF-SIMS). Such an approach produced results that can be analyzed using a multivariate analysis (MVA) procedure that performs the simultaneous processing of spatially and chemically related datasets. The coatings consist of two commercial resins that yield extremely similar spectra, and there are no peaks of sufficient intensity that are uniquely diagnostic of either material to provide an unambiguous identification of each. In order to resolve the problem, in addition to microtome-based sample preparation steps of tapers for the analysis through sample thickness, standard samples in cured and uncured conditions are introduced and measured in the same fashion as the specimens under investigation. The resulting ToF-SIMS imaging datasets have been processed using non-negative matrix factorization (NMF), which enabled identification of phase separation in the cured coatings.
Collapse
Affiliation(s)
- Gustavo F Trindade
- The Surface Analysis Laboratory, Department of Mechanical Engineering Sciences , University of Surrey , Guildford , Surrey , GU2 7XH , United Kingdom
| | - Marie-Laure Abel
- The Surface Analysis Laboratory, Department of Mechanical Engineering Sciences , University of Surrey , Guildford , Surrey , GU2 7XH , United Kingdom
| | - Chris Lowe
- Becker Industrial Coatings, Ltd. , Goodlass Road , Speke , Liverpool , L24 9HJ , United Kingdom
| | - Rene Tshulu
- The Surface Analysis Laboratory, Department of Mechanical Engineering Sciences , University of Surrey , Guildford , Surrey , GU2 7XH , United Kingdom
| | - John F Watts
- The Surface Analysis Laboratory, Department of Mechanical Engineering Sciences , University of Surrey , Guildford , Surrey , GU2 7XH , United Kingdom
| |
Collapse
|
18
|
An R, Fan P, Yan N, Ji Q, Sunkulp G, Wang Y. Nanofriction of Graphene/Ionic Liquid-Infused Block Copolymer Homoporous Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:11590-11602. [PMID: 28830141 DOI: 10.1021/acs.langmuir.7b01973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have infused graphene/ionic liquid into block copolymer homoporous membranes (HOMEs), which have highly ordered uniform cylindrical nanopores, to form compact, dense, and continuous graphene/ionic liquid (Gr/IL) lubricating layers at interfaces, enabling a reduction in the friction coefficient. Raman and XPS analyses, confirmed the parallel alignment of the cation of ILs on graphene by the π-π stacking interaction of the imidazolium ring with the graphene layer. This alignment loosens the lattice spacing of Gr in Gr/ILs, leading to a larger lattice spacing of 0.36 nm in Gr of Gr/ILs hybrids than the pristine Gr (0.33 nm). The loose graphene layers, which are caused by the coexistence of graphene and ILs, would make the sliding easier, and favor the lubrication. An increase in the friction coefficient was observed on ILs-infused block copolymer HOMEs, as compared to Gr/ILs-infused ones, due to the absence of Gr and the unstably formed ILs film. Gr/ILs-infused block copolymer HOMEs also exhibit much smaller residual indentation depth and peak indentation depth in comparison with ILs-infused ones. This indicates that the existence of stably supported Gr/ILs hybrid liquid films aids the reduction of the friction coefficient by preventing the thinning of the lubricant layer and exposure of the underlying block copolymer HOMEs.
Collapse
Affiliation(s)
- Rong An
- Herbert Gleiter Institute of Nanoscience, Nanjing University of Science & Technology , Nanjing 210094, People's Republic of China
| | - Pengpeng Fan
- Herbert Gleiter Institute of Nanoscience, Nanjing University of Science & Technology , Nanjing 210094, People's Republic of China
| | - Nina Yan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University , Nanjing 210009, People's Republic of China
| | - Qingmin Ji
- Herbert Gleiter Institute of Nanoscience, Nanjing University of Science & Technology , Nanjing 210094, People's Republic of China
| | - Goel Sunkulp
- Herbert Gleiter Institute of Nanoscience, Nanjing University of Science & Technology , Nanjing 210094, People's Republic of China
| | - Yong Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University , Nanjing 210009, People's Republic of China
| |
Collapse
|
19
|
Vysochinskaya YS, Gorodov VV, Anisimov AA, Boldyrev KL, Buzin MI, Naumkin AV, Maslakov KI, Peregudov AS, Shchegolikhina OI, Muzafarov AM. New star-like polydimethylsiloxanes: synthesis, properties, and application. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1859-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|