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Liao Q, Ren H, Xu J, Wang P, Yuan B, Zhang H. Combined experiments and molecular simulations for understanding the thermo-responsive behavior and gelation of methylated glucans with different glycosidic linkages. J Colloid Interface Sci 2024; 674:315-325. [PMID: 38936088 DOI: 10.1016/j.jcis.2024.06.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/13/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
HYPOTHESIS Elucidation of the micro-mechanisms of sol-gel transition of gelling glucans with different glycosidic linkages is crucial for understanding their structure-property relationship and for various applications. Glucans with distinct molecular chain structures exhibit unique gelation behaviors. The disparate gelation phenomena observed in two methylated glucans, methylated (1,3)-β-d-glucan of curdlan (MECD) and methylated (1,4)-β-d-glucan of cellulose (MC), notwithstanding their equivalent degrees of substitution, are intricately linked to their unique molecular architectures and interactions between glucan and water. EXPERIMENTS Density functional theory and molecular dynamics simulations focused on the electronic property distinctions between MECD and MC, alongside conformational variations during thermal gelation. Inline attenuated total reflection Fourier transform infrared spectroscopy tracked secondary structure alterations in MECD and MC. To corroborate the simulation results, additional analyses including circular dichroism, rheology, and micro-differential scanning calorimetry were performed. FINDINGS Despite having similar thermally induced gel networks, MECD and MC display distinct physical gelation patterns and molecular-level conformational changes during gelation. The network of MC gel was formed via a "coil-to-ring" transition, followed by ring stacking. In contrast, the MECD gel comprised compact irregular helices accompanied by notable volume shrinkage. These variations in gelation behavior are ascribed to heightened hydrophobic interactions and diminished hydrogen bonding in both systems upon heating, resulting in gelation. These findings provide valuable insights into the microstructural changes during gelation and the thermo-gelation mechanisms of structurally similar polysaccharides.
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Affiliation(s)
- Qingyu Liao
- Advanced Rheology Institute, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Huimin Ren
- Advanced Rheology Institute, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiatong Xu
- Advanced Rheology Institute, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Pengguang Wang
- Advanced Rheology Institute, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Baihua Yuan
- Institute of Marine Equipment, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Hongbin Zhang
- Advanced Rheology Institute, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China.
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Li P, Yang X, Chen F, Wang D, Hao D, Xu Z, Qiu M, He S, Xia F, Tian Y. Confined Water Dominates Ion/Molecule Transport in Hydrogel Nanochannels. NANO LETTERS 2024; 24:897-904. [PMID: 38193898 DOI: 10.1021/acs.nanolett.3c04107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Current artificial nanochannels rely more on charge interactions for intelligent mass transport. Nevertheless, popular charged nanochannels would lose their advantages in long-term applications. Confined water, an indispensable transport medium in biological nanochannels, dominating the transport process in the uncharged nanochannels perfectly provides a new perspective. Herein, we achieve confined-water-dominated mass transport in hydrogel nanochannels (HNCs) constructed by in situ photopolymerization of acrylic acid (PAA) hydrogel in anodic alumina (AAO) nanochannels. HNCs show selectivity to Na+ transport and a high transport rate of molecules after introducing Na+/Li+, compared with other alkali metal ions like Cs+/K+. The mechanism given by ATR-FTIR shows that the hydrogen-bonding structure of confined water in HNCs is destabilized by Na+/Li+, which facilitates mass transport, but is constrained by Cs+/K+, resulting in transport inhibition. This work elucidates the relationship between confined water and mass transport in uncharged nanochannels while also presenting a strategy for designing functional nanochannel devices.
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Affiliation(s)
- Peijia Li
- Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xiaotao Yang
- Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Fengxiang Chen
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Hubei Key Laboratory of Digital Textile Equipment, Wuhan Textile University, Wuhan 430200, People's Republic of China
| | - Dianyu Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Dezhao Hao
- Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Zhe Xu
- Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Ming Qiu
- Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Shaofan He
- Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Fan Xia
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430078, People's Republic of China
| | - Ye Tian
- Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, People's Republic of China
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3
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Fan Z, Xu T, Jiang C, Wang L, Sun S, Zhou Q. Study on the hydrophobicity of [Bmim] 2[CuCl 4] by two-dimensional correlation spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 282:121637. [PMID: 35907313 DOI: 10.1016/j.saa.2022.121637] [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: 04/18/2022] [Revised: 06/17/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
By dissolving copper chloride in [Bmim]Cl (1-butyl-3-methylimidazolium chloride), chloride ions can coordinate with copper ions and form [CuCl4]2-, thereby inducing the solution being hydrophobic. In the present work, hydrogen bonds between [Bmim]+ and anions are analyzed and discussed by two-dimensional correlation spectroscopy. Time-dependent attenuated total reflection spectroscopy (ATR-FTIR) is introduced to monitor the hygroscopic process of [Bmim]2[CuCl4] and [Bmim]Cl in situ. Hygroscopic capacity and rate of [Bmim]2[CuCl4] shrink compared with [Bmim]Cl. The change of water molecular clusters has been studied by second-derivative spectra in the hygroscopic process. The behaviors of water molecular in the two ionic liquids are also distinctive.
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Affiliation(s)
- Zhaosheng Fan
- Technology Center, Shanghai Tobacco Group Beijing Cigarette Factory Co., Ltd., Tongzhou Dis., Beijing 101121, China; Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Tongguang Xu
- Technology Center, Shanghai Tobacco Group Beijing Cigarette Factory Co., Ltd., Tongzhou Dis., Beijing 101121, China
| | - Chengyong Jiang
- Technology Center, Shanghai Tobacco Group Beijing Cigarette Factory Co., Ltd., Tongzhou Dis., Beijing 101121, China
| | - Lida Wang
- Technology Center, Shanghai Tobacco Group Beijing Cigarette Factory Co., Ltd., Tongzhou Dis., Beijing 101121, China
| | - Suqin Sun
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Qun Zhou
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China.
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4
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Scherillo G, Mensitieri G, Baldanza A, Loianno V, Musto P, Pannico M, Correa A, De Nicola A, Milano G. Weak Interactions between Poly(ether imide) and Carbon Dioxide: A Multiscale Investigation Combining Experiments, Theory, and Simulations. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Giuseppe Scherillo
- Department of Materials and Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125, Naples, Italy
| | - Giuseppe Mensitieri
- Department of Materials and Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125, Naples, Italy
| | - Antonio Baldanza
- Department of Materials and Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125, Naples, Italy
| | - Valerio Loianno
- Department of Materials and Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125, Naples, Italy
| | - Pellegrino Musto
- Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078Pozzuoli (NA), Italy
| | - Marianna Pannico
- Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078Pozzuoli (NA), Italy
| | - Andrea Correa
- Department of Chemical Science, University of Naples Federico II, Via Cintia 21, 80126Napoli, Italy
| | - Antonio De Nicola
- Scuola Superiore Meridionale, Via largo San Marcellino 10, 80138Napoli, Italy
| | - Giuseppe Milano
- Department of Materials and Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125, Naples, Italy
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5
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Hydrolytic Degradation of Closed Cell Polyethylene Terephthalate Foams. The Role of the Mobile Amorphous Phase in the Ductile-Brittle Transition. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Biliškov N. Infrared spectroscopic monitoring of solid-state processes. Phys Chem Chem Phys 2022; 24:19073-19120. [DOI: 10.1039/d2cp01458k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We put a spotlight on IR spectroscopic investigations in materials science by providing a critical insight into the state of the art, covering both fundamental aspects, examples of its utilisation, and current challenges and perspectives focusing on the solid state.
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Affiliation(s)
- Nikola Biliškov
- Rudjer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3A 0B8, Canada
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8
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Xu Z, Yang W, Si W, Chen J, Peng Y, Li J. A novel γ-like MnO 2 catalyst for ozone decomposition in high humidity conditions. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126641. [PMID: 34329114 DOI: 10.1016/j.jhazmat.2021.126641] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/29/2021] [Accepted: 07/11/2021] [Indexed: 06/13/2023]
Abstract
MnO2 catalysts have been widely studied for catalytic gaseous ozone decomposition. However, their poor moisture resistance often leads to undesirable catalytic effects in the presence of high humidity. In this study, a novel catalyst with γ-like MnO2 was synthesized using the selective dissolution method on LaMnO3 perovskites. The as-prepared catalyst exhibited quite stable ozone conversion of ~90% within 12 h under 75% relative humidity (400-800 ppm of ozone, 30 °C, 150 000 mL·g-1·h-1 of WHSV). In contrast, traditional γ-MnO2 catalyst showed deficient resistance to H2O and sensitivity to space velocity. Detailed characterizations showed that the larger number of oxygen vacancies induced by structure reconstruction of the γ-like MnO2 and residual La3+ cations facilitated ozone decomposition in humid atmosphere. Finally, the reaction rate of ozone decomposition was proposed by a kinetic study, which further proved that the amount and hydrophilicity of oxygen vacancies are the determinants of the first-order reaction rate constant.
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Affiliation(s)
- Zhenghao Xu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Wenhao Yang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Wenzhe Si
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Jianjun Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China.
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
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Qin Y, Kang G, Cao Y. Finely tuned polyamide structure with green plasticizers to construct ultrafast water channels for effective desalination. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:147089. [PMID: 33901955 DOI: 10.1016/j.scitotenv.2021.147089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 04/05/2021] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
Highly permeable reverse osmosis (RO) membranes are desirable for alleviating the energy burden and ensuring future water sustainability. Herein, the effectiveness of green plasticizer-assisted interfacial polymerization (GPAIP) for preparing polyamide thin-film composite (TFC) RO membranes with significantly enhanced water permeability was demonstrated. The presence of green citrate plasticizers, namely tributyl citrate (TBC) or acetyl tributyl citrate (ATBC), led to the formation of new hydrogen bonds and inhibited the formation of the initial interchain amide-amide bonding, thus markedly reducing chain rigidity as demonstrated by the decreased elasticity modulus. More flexible polyamide chains resulted in the creation of more ultrafast water channels during filtration. Furthermore, TBC-modified membranes exhibited more elastic polyamide layers and higher water flux than that of ATBC-modified membranes on account of the presence of both hydrogen bond acceptors (OH) and hydrogen bond donors (C=O) in TBC molecules. Specifically, water flux of 0.6 wt% TBC-modified and 0.6 wt% ATBC-modified membranes was 83.6 L m-2 h-1 and 49.7 L m-2 h-1 respectively, more than 5 times and 3 times that of the pristine membrane. The excellent performance of TFC RO membranes fabricated via GPAIP together with the facile membrane manufacturing process offered the possibility of breaking the predicament in desalination field, which could eventually help ease the current freshwater crisis.
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Affiliation(s)
- Yitian Qin
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guodong Kang
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Yiming Cao
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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10
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Song Y, Zhang S, Kang J, Chen J, Cao Y. Water absorption dependence of the formation of poly(vinyl alcohol)-iodine complexes for poly(vinyl alcohol) films. RSC Adv 2021; 11:28785-28796. [PMID: 35478575 PMCID: PMC9038136 DOI: 10.1039/d1ra04867h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/16/2021] [Indexed: 11/21/2022] Open
Abstract
Poly(vinyl alcohol) (PVA) films annealed at different temperatures are used to explore the effects of the water absorption on the formation of PVA–iodine complexes. It's found that the higher the annealing temperature, the stronger the interaction force between PVA segments, and the smaller the free volume of the PVA films. These mainly lead to the reduction of the amount of PVA segments with a moderate degree of hydration (i.e., PVA segments with moderate mobility), which are the major segments participating in the formation of PVA–iodine complexes. Therefore, PVA films with higher water absorption not only possess faster complexation speed and form more PVA–iodine complexes, but also increase the proportion of polyiodide ions with a longer length. Moreover, the complexation restricts the PVA segments with high mobility, resulting in the formation of the intermolecular ordered structure. The water absorption dependence may guide the dyeing process to obtain PVA polarizers with excellent optical performance. Swelling process improves the mobility of PVA segments, while dyeing process restricts that. And there is a large water absorption dependence on the formation of PVA–iodine complexes.![]()
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Affiliation(s)
- Yingxu Song
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Sichuan University Chengdu 610065 China +86-28-8540-6333
| | - Sumei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Sichuan University Chengdu 610065 China +86-28-8540-6333
| | - Jian Kang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Sichuan University Chengdu 610065 China +86-28-8540-6333
| | - Jinyao Chen
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Sichuan University Chengdu 610065 China +86-28-8540-6333
| | - Ya Cao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Sichuan University Chengdu 610065 China +86-28-8540-6333
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11
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Sullivan MV, Dennison SR, Hayes JM, Reddy SM. Evaluation of acrylamide-based molecularly imprinted polymer thin-sheets for specific protein capture-a myoglobin model. Biomed Phys Eng Express 2021; 7. [PMID: 34107465 PMCID: PMC8212870 DOI: 10.1088/2057-1976/ac0991] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/09/2021] [Indexed: 11/25/2022]
Abstract
We evaluate a series of thin-sheet hydrogel molecularly imprinted polymers (MIPs), using a family of acrylamide-based monomers, selective for the target protein myoglobin (Mb). The simple production of the thin-sheet MIP offers an alternative biorecognition surface that is robust, stable and uniform, and has the potential to be adapted for biosensor applications. The MIP containing the functional monomer N-hydroxymethylacrylamide (NHMAm), produced optimal specific rebinding of the target protein (Mb) with 84.9% (± 0.7) rebinding and imprinting and selectivity factors of 1.41 and 1.55, respectively. The least optimal performing MIP contained the functional monomer N,N-dimethylacrylamide (DMAm) with 67.5% (± 0.7) rebinding and imprinting and selectivity factors of 1.11 and 1.32, respectively. Hydrogen bonding effects, within a protein-MIP complex, were investigated using computational methods and Fourier transform infrared (FTIR) spectroscopy. The quantum mechanical calculations predictions of a red shift of the monomer carbonyl peak is borne-out within FTIR spectra, with three of the MIPs, acrylamide, N-(hydroxymethyl) acrylamide, and N-(hydroxyethyl) acrylamide, showing peak downshifts of 4, 11, and 8 cm−1, respectively.
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Affiliation(s)
- Mark V Sullivan
- Dr. M. V. Sullivan and Prof. S. M. Reddy, Department of Chemistry, School of Natural Sciences, University of Central Lancashire, Preston, PR1 2HE, United Kingdom
| | - Sarah R Dennison
- Dr. S. R. Dennison and Dr. J. M. Hayes, School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, PR1 2HE, United Kingdom
| | - Joseph M Hayes
- Dr. S. R. Dennison and Dr. J. M. Hayes, School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, PR1 2HE, United Kingdom
| | - Subrayal M Reddy
- Dr. M. V. Sullivan and Prof. S. M. Reddy, Department of Chemistry, School of Natural Sciences, University of Central Lancashire, Preston, PR1 2HE, United Kingdom
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Sena S, Sumeyra KN, Ulkugul G, Sema A, Betul K, Muge SB, Sayip EM, Muhammet U, Cevriye K, Mahir M, Titu MA, Ficai D, Ficai A, Gunduz O. Controlled Release of Metformin Hydrochloride from Core-Shell Nanofibers with Fish Sarcoplasmic Protein. MEDICINA (KAUNAS, LITHUANIA) 2019; 55:E682. [PMID: 31658758 PMCID: PMC6843546 DOI: 10.3390/medicina55100682] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 09/26/2019] [Accepted: 10/04/2019] [Indexed: 01/13/2023]
Abstract
Background and Objectives: A coaxial electrospinning technique was used to produce core/shell nanofibers of a polylactic acid (PLA) as a shell and a polyvinyl alcohol (PVA) containing metformin hydrochloride (MH) as a core. Materials and Methods: Fish sarcoplasmic protein (FSP) was extracted from fresh bonito and incorporated into nanofiber at various concentrations to investigate the influence on properties of the coaxial nanofibers. The morphology, chemical structure and thermal properties of the nanofibers were studied. Results: The results show that uniform and bead-free structured nanofibers with diameters ranging from 621 nm to 681 nm were obtained. A differential scanning calorimetry (DSC) analysis shows that FSP had a reducing effect on the crystallinity of the nanofibers. Furthermore, the drug release profile of electrospun fibers was analyzed using the spectrophotometric method. Conclusions: The nanofibers showed prolonged and sustained release and the first order kinetic seems to be more suitable to describe the release. MTT assay suggests that the produced drug and protein loaded coaxial nanofibers are non-toxic and enhance cell attachment. Thus, these results demonstrate that the produced nanofibers had the potential to be used for diabetic wound healing applications.
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Affiliation(s)
- Su Sena
- Center for Nanotechnology & Biomaterials Application and Research, Marmara University, 34722 Istanbul, Turkey.
- Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, 34722 Istanbul, Turkey.
| | - Korkmaz Nalan Sumeyra
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, 34755 Istanbul, Turkey.
| | - Guven Ulkugul
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, 34755 Istanbul, Turkey.
| | - Arslan Sema
- Department of Biochemistry, Marmara University, 34854 Istanbul, Turkey.
| | - Karademir Betul
- Department of Biochemistry, Marmara University, 34854 Istanbul, Turkey.
| | - Sennaroglu Bostan Muge
- Department of Chemical Engineering, Faculty of Engineering, Marmara University, 34722 Istanbul, Turkey.
| | - Eroglu Mehmet Sayip
- Department of Chemical Engineering, Faculty of Engineering, Marmara University, 34722 Istanbul, Turkey.
| | - Uzun Muhammet
- Department of Textile Engineering, Faculty of Technology, Marmara University 34722 Istanbul, Turkey.
| | - Kalkandelen Cevriye
- Department of Biomedical Devices Technology, Vocational School of Technical Sciences, Istanbul University-Cerrahpasa, 34500 Istanbul, Turkey.
| | - Mahirogullari Mahir
- Nanortopedi Industry and Trade Inc., Sanayi Mahallesi Teknopark Bulvari, Teknopark Istanbul, 34906 Istanbul, Turkey.
| | - Mihail Aurel Titu
- Department of Industrial Engineering and Management, "Lucian Blaga" University of Sibiu, Faculty of Engineering, RO-550025 Sibiu, Romania.
- Academy of Romanian Scientists, 54 Splaiul Independentei, Sector 5, 50085 Bucharest, Romania.
| | - Denisa Ficai
- Department of Science and Engineering of Oxidic Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 011061 Bucharest, Romania.
| | - Anton Ficai
- Academy of Romanian Scientists, 54 Splaiul Independentei, Sector 5, 50085 Bucharest, Romania.
- Department of Science and Engineering of Oxidic Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 011061 Bucharest, Romania.
| | - Oguzhan Gunduz
- Center for Nanotechnology & Biomaterials Application and Research, Marmara University, 34722 Istanbul, Turkey.
- Department of Metallurgical and Materials Engineering, Faculty of Technology, Marmara University, 34722 Istanbul, Turkey.
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13
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Mensitieri G, Scherillo G, La Manna P, Musto P. Sorption Thermodynamics of CO₂, H₂O, and CH₃OH in a Glassy Polyetherimide: A Molecular Perspective. MEMBRANES 2019; 9:E23. [PMID: 30717234 PMCID: PMC6409864 DOI: 10.3390/membranes9020023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/18/2019] [Accepted: 01/18/2019] [Indexed: 11/17/2022]
Abstract
In this paper, the sorption thermodynamics of low-molecular-weight penetrants in a glassy polyetherimide, endowed with specific interactions, is addressed by combining an experimental approach based on vibrational spectroscopy with thermodynamics modeling. This modeling approach is based on the extension of equilibrium theories to the out-of-equilibrium glassy state. Specific interactions are accounted for in the framework of a compressible lattice fluid theory. In particular, the sorption of carbon dioxide, water, and methanol is illustrated, exploiting the wealth of information gathered at a molecular level from Fourier-transform infrared (FTIR) spectroscopy to tailor thermodynamics modeling. The investigated penetrants display a different interacting characteristic with respect to the polymer substrate, which reflects itself in the sorption thermodynamics. For the specific case of water, the outcomes from molecular dynamics simulations are compared with the results of the present analysis.
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Affiliation(s)
- Giuseppe Mensitieri
- Department of Chemical, Materials and PrNoduction Engineering, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples, Italy.
- Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Viale Campi Flegrei 34, 80078 Pozzuoli (Na), Italy.
| | - Giuseppe Scherillo
- Department of Chemical, Materials and PrNoduction Engineering, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples, Italy.
| | - Pietro La Manna
- Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Viale Campi Flegrei 34, 80078 Pozzuoli (Na), Italy.
| | - Pellegrino Musto
- Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, Viale Campi Flegrei 34, 80078 Pozzuoli (Na), Italy.
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14
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Guo W, Chen J, Sun S, Zhou Q. Investigation of water diffusion in hydrogel pore-filled membrane via 2D correlation time-dependent ATR-FTIR spectroscopy. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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15
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Levina E, Penkov NV, Rodionova NN, Tarasov SA, Barykina DV, Vener MV. Hydration of the Carboxylate Group in Anti-Inflammatory Drugs: ATR-IR and Computational Studies of Aqueous Solution of Sodium Diclofenac. ACS OMEGA 2018; 3:302-313. [PMID: 30023777 PMCID: PMC6044930 DOI: 10.1021/acsomega.7b01034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 12/27/2017] [Indexed: 05/12/2023]
Abstract
Diclofenac (active ingredient of Voltaren) has a significant, multifaceted role in medicine, pharmacy, and biochemistry. Its physical properties and impact on biomolecular structures still attract essential scientific interest. However, its interaction with water has not been described yet at the molecular level. In the present study, we shed light on the interaction between the steric hindrance (the intramolecular N-H···O bond, etc.) carboxylate group (-CO2-) with water. Aqueous solution of sodium declofenac is investigated using attenuated total reflection-infrared (ATR-IR) and computational approaches, i.e., classical molecular dynamics (MD) simulations and density functional theory (DFT). Our coupled classical MD simulations, DFT calculations, and ATR-IR spectroscopy results indicated that the -CO2- group of the diclofenac anion undergoes strong specific interactions with the water molecules. The combined experimental and theoretical techniques provide significant insights into the spectroscopic manifestation of these interactions and the structure of the hydration shell of the -CO2- group. Moreover, the developed methodology for the theoretical analysis of the ATR-IR spectrum could serve as a template for the future IR/Raman studies of the strong interaction between the steric hindrance -CO2- group of bioactive molecules with the water molecules in dilute aqueous solutions.
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Affiliation(s)
- Elena
O. Levina
- Department
of Molecular and Chemical Physics, Moscow
Institute of Physics and Technology, 7 Institutskiy per., 141700 Dolgoprudny, Russia
| | - Nikita V. Penkov
- Department
of Methods of Optical and Spectral Analysis, Institute of Cell Biophysics, Russian Academy of Sciences, 3 Institutskaya Street, 142292 Pushchino, Russia
| | - Natalia N. Rodionova
- OOO
“NPF” Materia Medica Holding, 47-1 Trifonovskaya Street, 129272 Moscow, Russia
| | - Sergey A. Tarasov
- OOO
“NPF” Materia Medica Holding, 47-1 Trifonovskaya Street, 129272 Moscow, Russia
| | - Daria V. Barykina
- OOO
“NPF” Materia Medica Holding, 47-1 Trifonovskaya Street, 129272 Moscow, Russia
| | - Mikhail V. Vener
- Department
of Quantum Chemistry, Mendeleev University
of Chemical Technology, 9 Miusskaya Square, 125047 Moscow, Russia
- E-mail:
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16
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Jia L, Su G, Yuan Q, Zhang X, Zhou T. Difference in the micro-dynamics mechanism between aromatic nylon and aliphatic nylon during water absorption: spectroscopic evidence. Phys Chem Chem Phys 2018; 20:26764-26776. [DOI: 10.1039/c8cp05432k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The difference in the micro-dynamics mechanism between aromatic nylon and aliphatic nylon during water absorption was studied to explore the reason for the significantly smaller decline of barrier performance of poly(m-xylene adipamide) (MXD6) film than that of polyamide 6 (PA6) film under high humidity.
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Affiliation(s)
- Liyang Jia
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Gehong Su
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Qiang Yuan
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Xueqian Zhang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Tao Zhou
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
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17
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Nguyen Huynh NM, Boeva ZA, Smått JH, Pesonen M, Lindfors T. Reduced graphene oxide as a water, carbon dioxide and oxygen barrier in plasticized poly(vinyl chloride) films. RSC Adv 2018; 8:17645-17655. [PMID: 35542063 PMCID: PMC9080506 DOI: 10.1039/c8ra03080d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 04/30/2018] [Indexed: 12/28/2022] Open
Abstract
Herein, we report the incorporation of a 10 μm thick reduced graphene oxide (RGO) barrier layer in a plasticized poly(vinyl chloride) (PVC) film as the main constituent in ion-selective membranes used in potentiometric solid-contact ion-selective electrodes (SCISE). Fourier transform infrared attenuated total reflection (FTIR-ATR) and oxygen transmission rate (OTR) measurements showed that the embedded RGO barrier efficiently impedes the diffusion of liquid water, carbon dioxide and oxygen (O2) through the 400 μm thick PVC film, which causes potential instability and irreproducibility of the SCISEs. The measurements revealed that the RGO layer completely blocks the carbon dioxide diffusion, while it fully blocks the water diffusion for 16 h and reduced the OTR by 85% on average. The μm-thick RGO films used in this study were easier to handle and incorporate into host polymers, and form more efficient and robust barriers compared to the mono-, few- and multilayer graphene commonly applied as barrier layers for liquids and gases. We also demonstrated that the FTIR-ATR technique employed in the permeability measurements is a versatile and very sensitive technique for studying the diffusion of small amounts of water and carbon dioxide through graphene-based thin films. A 10 μm-thick reduced graphene oxide barrier layer efficiently blocks water, carbon dioxide and oxygen diffusion through plasticized PVC.![]()
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Affiliation(s)
- Ngoc Minh Nguyen Huynh
- Åbo Akademi University
- Faculty of Science and Engineering
- Laboratory of Analytical Chemistry
- (Johan Gadolin Process Chemistry Centre, PCC)
- 20500 Åbo
| | - Zhanna A. Boeva
- Åbo Akademi University
- Faculty of Science and Engineering
- Laboratory of Analytical Chemistry
- (Johan Gadolin Process Chemistry Centre, PCC)
- 20500 Åbo
| | - Jan-Henrik Smått
- Åbo Akademi University
- Faculty of Science and Engineering
- Laboratory of Physical Chemistry (Center for Functional Materials, FUNMAT)
- 20500 Åbo
- Finland
| | - Markus Pesonen
- Åbo Akademi University
- Faculty of Science and Engineering
- Physics (Center for Functional Materials, FUNMAT)
- 20500 Åbo
- Finland
| | - Tom Lindfors
- Åbo Akademi University
- Faculty of Science and Engineering
- Laboratory of Analytical Chemistry
- (Johan Gadolin Process Chemistry Centre, PCC)
- 20500 Åbo
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18
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Chamerski K, Korzekwa W, Filipecki J, Shpotyuk O, Stopa M, Jeleń P, Sitarz M. Nanoscale Observation of Dehydration Process in PHEMA Hydrogel Structure. NANOSCALE RESEARCH LETTERS 2017; 12:303. [PMID: 28449541 PMCID: PMC5406318 DOI: 10.1186/s11671-017-2055-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 04/08/2017] [Indexed: 06/07/2023]
Abstract
One of the most important field of interest in respect to hydrogel materials is their capability to water storage. The problem mentioned above plays an important role regarding to diffusion of fluid media containing nanoparticles, what is very useful in biomedical applications, such as artificial polymeric implants, drug delivery systems or tissue engineering.In presented work, dehydration process in hydrogels used in ophthalmology as intraocular lenses was observed. Before measurements studied materials were immersed in deionized water and saline solution to obtain equilibrium swelling state. Studies of the dehydration process were carried out by use of gravimetric analysis, Fourier-Transform Infrared and Positron Annihilation Lifetime Spectroscopy. Obtained results revealed changes in hydrogen bonding structure and free volume holes induced by saline solution ingredients.
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Affiliation(s)
- Kordian Chamerski
- Institute of Physics, Faculty of Mathematics and Natural Science, Jan Dlugosz University in Czestochowa, Al. Armii Krajowej 13/15, 42-200, Czestochowa, Poland
| | | | - Jacek Filipecki
- Institute of Physics, Faculty of Mathematics and Natural Science, Jan Dlugosz University in Czestochowa, Al. Armii Krajowej 13/15, 42-200, Czestochowa, Poland
| | - Olha Shpotyuk
- Danylo Halytsky Lviv National Medical University, 69, Pekarska str., Lviv, 79010, Ukraine.
| | - Marcin Stopa
- Department of Optometry and Biology of Visual System, Poznan University of Medical Sciences, ul. Rokietnicka 5D, 60-806, Poznan, Poland
- Clinical Eye Unit and Pediatric Ophthalmology Service, Heliodor Swiecicki University Hospital, Poznan University of Medical Sciences, Poznan, Poland
| | - Piotr Jeleń
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059, Krakow, Poland
| | - Maciej Sitarz
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059, Krakow, Poland
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19
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Zhou Y, Hou L, Chen H, Steenbakkers R, Sehanobish K, Wu P, Shi Q. FT-IR studies of factors affecting the diffusivity of oligo (oxyethylene) fatty acid ester in PE films: Effect of temperature, ethylene oxide chain length and base resin type. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Abbate M, D'Orazio L. Water Diffusion through a Titanium Dioxide/Poly(Carbonate Urethane) Nanocomposite for Protecting Cultural Heritage: Interactions and Viscoelastic Behavior. NANOMATERIALS 2017; 7:nano7090271. [PMID: 28902179 PMCID: PMC5618382 DOI: 10.3390/nano7090271] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/06/2017] [Accepted: 09/07/2017] [Indexed: 11/30/2022]
Abstract
Water diffusion through a TiO2/poly (carbonate urethane) nanocomposite designed for the eco-sustainable protection of outdoor cultural heritage stonework was investigated. Water is recognized as a threat to heritage, hence the aim was to gather information on the amount of water uptake, as well as of species of water molecules absorbed within the polymer matrix. Gravimetric and vibrational spectroscopy measurements demonstrated that diffusion behavior of the nanocomposite/water system is Fickian, i.e., diffusivity is independent of concentration. The addition of only 1% of TiO2 nanoparticles strongly betters PU barrier properties and water-repellency requirement is imparted. Defensive action against penetration of water free from, and bonded through, H-bonding association arises from balance among TiO2 hydrophilicity, tortuosity effects and quality of nanoparticle dispersion and interfacial interactions. Further beneficial to antisoiling/antigraffiti action is that water-free fraction was found to be desorbed at a constant rate. In environmental conditions, under which weathering processes are most likely to occur, nanocomposite Tg values remain suitable for heritage treatments.
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Affiliation(s)
- Mario Abbate
- Istituto per i Polimeri, Compositi e Biomateriali, Via Campi Flegrei, 34, Fabbricato 70, 80078 Pozzuoli (Naples), Italy.
| | - Loredana D'Orazio
- Istituto per i Polimeri, Compositi e Biomateriali, Via Campi Flegrei, 34, Fabbricato 70, 80078 Pozzuoli (Naples), Italy.
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21
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Elzhry Elyafi AK, Standen G, Meikle ST, Lewis AL, Salvage JP. Development of MPC-DPA polymeric nanoparticle systems for inhalation drug delivery applications. Eur J Pharm Sci 2017. [DOI: 10.1016/j.ejps.2017.06.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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22
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de Nicola A, Correa A, Milano G, La Manna P, Musto P, Mensitieri G, Scherillo G. Local Structure and Dynamics of Water Absorbed in Poly(ether imide): A Hydrogen Bonding Anatomy. J Phys Chem B 2017; 121:3162-3176. [PMID: 28335602 DOI: 10.1021/acs.jpcb.7b00992] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrogen bonding (HB) interactions play a major role in determining the behavior of macromolecular systems absorbing water. In fact, functional and structural properties of polymer-water mixtures are affected by the amount and type of these interactions. This contribution aims at a molecular level understanding of the interactional scenario for the technologically relevant case of the poly(ether imide)-water system. The problem has been tackled by combining different experimental and theoretical approaches which, taken together, provide a comprehensive physical picture. Relevant experimental data were gathered by in situ FTIR spectroscopy, while molecular dynamics (MD) and statistical thermodynamics approaches were used as modeling theoretical tools. It was found that, among the possible configurations, some are strongly prevailing. In particular, water molecules preferentially establish water bridges with two carbonyl groups of the same PEI repeating unit. Water self-interactions were also detected, giving rise to a "second shell" species in the prevalent form of dimers. The population of the different water species was evaluated spectroscopically, and a remarkable agreement with theoretical predictions was found.
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Affiliation(s)
- Antonio de Nicola
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno , Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy
| | - Andrea Correa
- Department of Chemical Sciences, Federico II University of Naples Via Cintia , Complesso Monte S. Angelo, 80126 Napoli, Italy
| | - Giuseppe Milano
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno , Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.,Institute on Polymers, Composites and Biomaterials, National Research Council of Italy , Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Pietro La Manna
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy , Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Pellegrino Musto
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy , Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
| | - Giuseppe Mensitieri
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy , Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy.,Department of Chemical, Materials and Production Engineering, University of Naples Federico II , Piazzale Tecchio 80, 80125 Naples, Italy
| | - Giuseppe Scherillo
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II , Piazzale Tecchio 80, 80125 Naples, Italy
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23
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Santos MC, Bendiksen B, Elabd YA. Diffusion of Liquid Water in Free-Standing Polymer Films Using Pressure-Contact Time-Resolved Fourier Transform Infrared Attenuated Total Reflectance Spectroscopy. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Melissa C. Santos
- Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Beverly Bendiksen
- PPG Coatings Innovation Center, Allison
Park, Pennsylvania 15101, United States
| | - Yossef A. Elabd
- Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
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24
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He N, Papp S, Lindfors T, Höfler L, Latonen RM, Gyurcsányi RE. Pre-Polarized Hydrophobic Conducting Polymer Solid-Contact Ion-Selective Electrodes with Improved Potential Reproducibility. Anal Chem 2017; 89:2598-2605. [DOI: 10.1021/acs.analchem.6b04885] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ning He
- Åbo Akademi University, Johan Gadolin Process
Chemistry Centre, Faculty of Science and Engineering, Laboratory of
Analytical Chemistry, Biskopsgatan 8, FIN-20500 Turku/Åbo, Finland
| | - Soma Papp
- Department
of Inorganic and Analytical Chemistry, MTA-BME “Lendület”
Chemical Nanosensors Research Group, Budapest University of Technology and Economics, Szt. Gellért tér 4, 1111 Budapest, Hungary
| | - Tom Lindfors
- Åbo Akademi University, Johan Gadolin Process
Chemistry Centre, Faculty of Science and Engineering, Laboratory of
Analytical Chemistry, Biskopsgatan 8, FIN-20500 Turku/Åbo, Finland
| | - Lajos Höfler
- Department
of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, H-1111 Budapest, Hungary
| | - Rose-Marie Latonen
- Åbo Akademi University, Johan Gadolin Process
Chemistry Centre, Faculty of Science and Engineering, Laboratory of
Analytical Chemistry, Biskopsgatan 8, FIN-20500 Turku/Åbo, Finland
| | - Róbert E. Gyurcsányi
- Department
of Inorganic and Analytical Chemistry, MTA-BME “Lendület”
Chemical Nanosensors Research Group, Budapest University of Technology and Economics, Szt. Gellért tér 4, 1111 Budapest, Hungary
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25
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Antonio JL, Höfler L, Lindfors T, Córdoba de Torresi SI. Electrocontrolled Swelling and Water Uptake of a Three-Dimensional Conducting Polypyrrole Hydrogel. ChemElectroChem 2016. [DOI: 10.1002/celc.201600397] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Jadielson L. Antonio
- Instituto de Química; Universidade de São Paulo. C.P.; 26077.05513-970 São Paulo Brazil
| | - Lajos Höfler
- Department of Inorganic and Analytical Chemistry; Budapest University of Technology and Economics; Szt. Gellért tér 4 H-1111 Budapest Hungary
| | - Tom Lindfors
- Johan Gadolin Process Chemistry Centre; Åbo Akademi University, Faculty of Science and Engineering, Laboratory of Analytical Chemistry; Biskopsgatan 8 FIN-20500 Turku Finland
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26
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Nam C, Zimudzi TJ, Geise GM, Hickner MA. Increased Hydrogel Swelling Induced by Absorption of Small Molecules. ACS APPLIED MATERIALS & INTERFACES 2016; 8:14263-14270. [PMID: 27159118 DOI: 10.1021/acsami.6b02069] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The water and small molecule uptake behavior of amphiphilic diacrylate terminated poly(dimethylsiloxane) (PDMSDA)/poly(ethylene glycol diacrylate) (PEGDA) cross-linked hydrogels were studied using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy. These hydrogel networks absorbed more water as the PEGDA content of the network increased. In contrast to typical osmotic deswelling behavior that occurs when liquid water equilibrated hydrogels are immersed in small molecule solutions with water activities less than unity, water-swollen gels immersed in 2-acrylamido-2-methylpropanesulfonic acid (AMPS-H) solutions rapidly regained their water content within 4 min following an initial deswelling response. In situ ATR-FTIR analysis of the hydrogel film during the dynamic swelling experiment indicated that small molecule absorption into the gel played an important role in inducing gel reswelling in low water activity solutions. This aspect of polymer gel water uptake and interaction with small molecules is important for optimizing hydrogel coatings and hydrophilic polymer applications where there is an interaction between the internal chemical structure of the gel and electrolytes or other molecules in solution.
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Affiliation(s)
- Changwoo Nam
- Department of Materials Science and Engineering, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Tawanda J Zimudzi
- Department of Chemistry, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Geoffrey M Geise
- Department of Chemical Engineering, The University of Virginia , Charlottesville, Virginia 22904, United States
| | - Michael A Hickner
- Department of Materials Science and Engineering, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
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27
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Iwamoto R, Kusanagi H. Hydration Structure and Mobility of the Water Contained in Poly(ethylene terephthalate). J Phys Chem A 2015; 119:2885-94. [DOI: 10.1021/acs.jpca.5b00385] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Reikichi Iwamoto
- NIRS Institute of Water, Yuyamadai 2-7-10, Kawanishi, Hyogo Pref. 666-0137, Japan
| | - Hiroshi Kusanagi
- NIRS Institute of Water, Yuyamadai 2-7-10, Kawanishi, Hyogo Pref. 666-0137, Japan
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28
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Vyner MC, Li A, Amsden BG. The effect of poly(trimethylene carbonate) molecular weight on macrophage behavior and enzyme adsorption and conformation. Biomaterials 2014; 35:9041-8. [DOI: 10.1016/j.biomaterials.2014.07.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 07/18/2014] [Indexed: 10/24/2022]
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29
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Musto P, Galizia M, Pannico M, Scherillo G, Mensitieri G. Time-Resolved Fourier Transform Infrared Spectroscopy, Gravimetry, and Thermodynamic Modeling for a Molecular Level Description of Water Sorption in Poly(ε-caprolactone). J Phys Chem B 2014; 118:7414-29. [DOI: 10.1021/jp502270h] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Pellegrino Musto
- Institute
of Chemistry and Technology of Polymers, National Research Council of Italy, via Campi Flegrei, 34, 80078 Pozzuoli, Italy
| | - Michele Galizia
- Department
of Chemical, Materials and Production Engineering, University of Naples Federico II, p.le Tecchio 80, 80125 Naples, Italy
| | - Marianna Pannico
- Institute
of Chemistry and Technology of Polymers, National Research Council of Italy, via Campi Flegrei, 34, 80078 Pozzuoli, Italy
| | - Giuseppe Scherillo
- Department
of Chemical, Materials and Production Engineering, University of Naples Federico II, p.le Tecchio 80, 80125 Naples, Italy
| | - Giuseppe Mensitieri
- Department
of Chemical, Materials and Production Engineering, University of Naples Federico II, p.le Tecchio 80, 80125 Naples, Italy
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30
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Vyavahare O, Ng D, Hsu SL. Analysis of Structural Rearrangements of Poly(lactic acid) in the Presence of Water. J Phys Chem B 2014; 118:4185-93. [DOI: 10.1021/jp500219j] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Omkar Vyavahare
- Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - David Ng
- Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Shaw Ling Hsu
- Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
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31
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Wang DK, Zhang X, Diniz da Costa JC. Claisen-type degradation mechanism of cellulose triacetate membranes in ethanol–water mixtures. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2013.12.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Woods DA, Bain CD. Total internal reflection spectroscopy for studying soft matter. SOFT MATTER 2014; 10:1071-1096. [PMID: 24651911 DOI: 10.1039/c3sm52817k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Total internal reflection (TIR) spectroscopy is a widely used technique to study soft matter at interfaces. This tutorial review aims to provide researchers with an overview of the principles, experimental design and applications of TIR spectroscopy to enable them to understand how this class of techniques might be used in their research. It also highlights limitations and pitfalls of TIR techniques, which will assist readers in critically analysing the literature. Techniques covered include attenuated total reflection infrared spectroscopy (ATR-IR), TIR fluorescence, TIR Raman scattering and cavity-enhanced techniques. Other related techniques are briefly described.
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Affiliation(s)
- David A Woods
- Department of Chemistry, Durham University, South Road, Durham, UKDH1 3LE.
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33
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Pirayavaraporn C, Rades T, Gordon KC, Tucker IG. Quantification of the types of water in Eudragit RLPO polymer and the kinetics of water loss using FTIR. Int J Pharm 2013; 458:90-8. [DOI: 10.1016/j.ijpharm.2013.10.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 09/29/2013] [Accepted: 10/04/2013] [Indexed: 10/26/2022]
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34
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Affiliation(s)
- Eric M. Davis
- Department
of Chemical and
Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Yossef A. Elabd
- Department
of Chemical and
Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
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35
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Zhang X, Wu H, Guo S, Wang Y. Effect of phase morphology on water diffusion in phosphorus-containing thermotropic liquid crystal copolyester film. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.07.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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36
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Breen AF, Breen C, Clegg F, Döppers LM, Khairuddin, Labet M, Sammon C, Yarwood J. FTIR-ATR studies of the sorption and diffusion of acetone:water mixtures in poly(vinyl alcohol)-clay nanocomposites. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.07.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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37
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Lai H, Wang Z, Wu P, Chaudhary BI, Sengupta SS, Cogen JM, Li B. Structure and Diffusion Behavior of Trioctyl Trimellitate (TOTM) in PVC Film Studied by ATR-IR Spectroscopy. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300007m] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hengjie Lai
- The State Key Laboratory
of
Molecular Engineering of Polymers and Department of Macromolecular
Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, P.R.China
| | - Zhangwei Wang
- The State Key Laboratory
of
Molecular Engineering of Polymers and Department of Macromolecular
Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, P.R.China
| | - Peiyi Wu
- The State Key Laboratory
of
Molecular Engineering of Polymers and Department of Macromolecular
Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, P.R.China
| | - Bharat Indu Chaudhary
- The Dow Chemical Company, 727 Norristown Road, Spring House, Pennsylvania
19477, United States
| | - Saurav S Sengupta
- The Dow Chemical Company, 727 Norristown Road, Spring House, Pennsylvania
19477, United States
| | - Jeffrey M Cogen
- The Dow Chemical Company, 727 Norristown Road, Spring House, Pennsylvania
19477, United States
| | - Bin Li
- Dow Chem (China) Co. Ltd., 3D217, Shanghai Dow Center, 936 Zhang Heng
Road, Shanghai 201203, P.R.China
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38
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Theoretical and experimental investigation of the interactions between [emim]Ac and water molecules. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.02.020] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Woiterski L, Britt DW, Käs JA, Selle C. Oriented confined water induced by cationic lipids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4712-4722. [PMID: 22339557 DOI: 10.1021/la205043x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report on attenuated total reflection Fourier-transform infrared (ATR FTIR) spectroscopic measurements on oriented lipid multilayers of N,N-dimethyl-N,N-dioctadecyl-ammonium halides (DODAX, X = F, Cl, Br, I). The main goal of this study is the investigation of the structure and spectroscopic properties of water absorbed to these model membranes. Intensities of the water stretch absorptions were used to determine the amount of bound water. At high water activity, DODAF membranes bind ~11 water molecules/lipid while DODAC and DODAB adsorb 1-2 water/lipid and DODAI was hydrophobic. By adjustment of DODAF hydration to ~2 water molecules, stretching absorptions from water of the first hydration shell were accessible for the fluoride, chloride, and bromide analogs. The polarized measurements demonstrate highly confined and oriented water with infrared (IR) order parameters ranging from 0.2 to -0.4. Resolved IR water band components are attributed to different hydrogen-bonded populations. Complementary molecular dynamics simulations of DODAB strongly support the existence of differently hydrogen-bonded and oriented water within DODAB multilayers. A combination of both techniques was used for an assignment of water stretch band components to structures. The described cationic lipid systems are a prototype for a bottom-up approach to understand the IR spectroscopy of structured water at biological interfaces since they permit a defined increase of hydrophilic water-anionic interactions leading to extended water networks at membranes.
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Affiliation(s)
- Lydia Woiterski
- Institut für Experimentelle Physik I, Abteilung Physik Weicher Materie, Universität Leipzig, Leipzig, Germany.
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40
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Xiao Q, Lim LT, Tong Q. Properties of pullulan-based blend films as affected by alginate content and relative humidity. Carbohydr Polym 2012; 87:227-234. [DOI: 10.1016/j.carbpol.2011.07.040] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 07/12/2011] [Accepted: 07/25/2011] [Indexed: 11/28/2022]
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41
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Jin Y, Wang W, Su Z. Spectroscopic study on water diffusion in poly(lactic acid) film. Polym Chem 2012. [DOI: 10.1039/c2py20259j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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43
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Pejcic B, Crooke E, Doherty CM, Hill AJ, Myers M, Qi X, Ross A. The impact of water and hydrocarbon concentration on the sensitivity of a polymer-based quartz crystal microbalance sensor for organic compounds. Anal Chim Acta 2011; 703:70-9. [PMID: 21843677 DOI: 10.1016/j.aca.2011.07.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 07/06/2011] [Accepted: 07/10/2011] [Indexed: 10/18/2022]
Abstract
Long-term environmental monitoring of organic compounds in natural waters requires sensors that respond reproducibly and linearly over a wide concentration range, and do not degrade with time. Although polymer coated piezoelectric based sensors have been widely used to detect hydrocarbons in aqueous solution, very little information exists regarding their stability and suitability over extended periods in water. In this investigation, the influence of water aging on the response of various polymer membranes [polybutadiene (PB), polyisobutylene (PIB), polystyrene (PS), polystyrene-co-butadiene (PSB)] was studied using the quartz crystal microbalance (QCM). QCM measurements revealed a modest increase in sensitivity towards toluene for PB and PIB membranes at concentrations above 90 ppm after aging in water for 4 days. In contrast, the sensitivity of PS and PSB coated QCM sensors depended significantly on the toluene concentration and increased considerably at concentrations above 90 ppm after aging in water for 4 days. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) showed that there is a change in the sorption mechanism at higher toluene levels for PS and PSB. Positron annihilation lifetime spectroscopy (PALS) studies were performed to investigate the free volume properties of all polymers and to monitor any changes in the free volume size and distribution due to water and toluene exposure. The PALS did not detect any considerable variation in the free volume properties of the polymer films as a function of solution composition and soaking time, implying that viscoelastic and/or interfacial processes (i.e. surface area changes) are probably responsible for variations in the QCM sensitivity at high hydrocarbon concentrations. The results suggest that polymer membrane conditioning in water is an issue that needs to be considered when performing QCM measurements in the aqueous phase. In addition, the study shows that the hydrocarbon response is concentration dependant for polymers with a high glass transition temperature, and this feature is often neglected when comparing sensor sensitivity in the literature.
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Affiliation(s)
- Bobby Pejcic
- CSIRO, Earth Science and Resource Engineering, Bentley, WA, Australia.
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44
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Öhman M, Persson D. ATR-FTIR Kretschmann spectroscopy for interfacial studies of a hidden aluminum surface coated with a silane film and epoxy II. Analysis by integrated ATR-FTIR and EIS during exposure to electrolyte with complementary studies by in situ ATR-FTIR and in sit. SURF INTERFACE ANAL 2011. [DOI: 10.1002/sia.3780] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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45
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Max JJ, Chapados C. Isotope effects in liquid water by infrared spectroscopy. V. A sea of OH4ofC2vsymmetry. J Chem Phys 2011; 134:164502. [PMID: 21528968 DOI: 10.1063/1.3581035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jean-Joseph Max
- Département de chimie-biologie, Université du Québec à Trois-Rivières, Trois-Rivières, Québec G9A 5H7, Canada.
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46
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Wang M, Wu P, Sengupta SS, Chadhary BI, Cogen JM, Li B. Investigation of Water Diffusion in Low-Density Polyethylene by Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy and Two-Dimensional Correlation Analysis. Ind Eng Chem Res 2011. [DOI: 10.1021/ie102221a] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mengyin Wang
- The Key Laboratory of Molecular Engineering of Polymers(Ministry of Education) and Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Peiyi Wu
- The Key Laboratory of Molecular Engineering of Polymers(Ministry of Education) and Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Saurav S. Sengupta
- The Dow Chemical Company, 171 River Road, Piscataway, New Jersey 08854, United States
| | - Bharat Indu. Chadhary
- The Dow Chemical Company, 171 River Road, Piscataway, New Jersey 08854, United States
| | - Jeffrey M. Cogen
- The Dow Chemical Company, 171 River Road, Piscataway, New Jersey 08854, United States
| | - Bin Li
- Dow Chem (China) Co. Ltd., 3D217, Shanghai Dow Center, 936 Zhang Heng Road, Shanghai, 201203, P.R. China
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47
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Jin Y, Wang W, Su Z. Spectroscopic Study on Water Diffusion in Poly(l-lactide)−Poly(ethylene glycol) Diblock Copolymer Film. Macromolecules 2011. [DOI: 10.1021/ma200062t] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ying Jin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Wei Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Zhaohui Su
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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48
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Sun B, Lai H, Wu P. Integrated Microdynamics Mechanism of the Thermal-Induced Phase Separation Behavior of Poly(vinyl methyl ether) Aqueous Solution. J Phys Chem B 2011; 115:1335-46. [DOI: 10.1021/jp1066007] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bingjie Sun
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Hengjie Lai
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Peiyi Wu
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, People’s Republic of China
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49
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Shishlov NM, Akhmetzyanov SS, Khursan SL. IR spectroscopic manifestations of hydration of poly(diphenyl sulfophthalide) during its storage. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2010. [DOI: 10.1134/s1990793110050234] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Šturcová A, Schmidt P, Dybal J. Role of hydration and water coordination in micellization of Pluronic block copolymers. J Colloid Interface Sci 2010; 352:415-23. [PMID: 20850130 DOI: 10.1016/j.jcis.2010.07.077] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Revised: 07/29/2010] [Accepted: 07/30/2010] [Indexed: 11/17/2022]
Abstract
Raman, attenuated total reflectance FTIR, near-infrared spectroscopy, and DFT calculations have been used in a study of aqueous solutions of three tri-block copolymers poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) or PEO-PPO-PEO with commercial names Pluronic PE6200, PE6400 and F68. It is shown that the process of micellization as a response to increased temperature is reflected in the hydroxyl stretching region of infrared and Raman spectra, which contains information both about restructuring of water and changes of polymer chains in polymer/water aggregates. Raman spectra exhibit differences between individual Pluronics even at temperatures below the critical micellization temperature (CMT). According to the attenuated total reflection (ATR) FTIR spectra, the same five water coordination types defined by the number of donated/accepted hydrogen bonds are present in interacting water as in bulk water. It indicates that models considering mixed states of water with different hydrogen bonding environments provide appropriate descriptions of bound water both below and above the CMT. Above the CMT, aggregate hydration increases in the order PE6400 < PE6200 < F68, although that does not fully correspond to the EO/PO ratio, and points to the differences in microstructure of aggregates formed by each copolymer. This study relates nanoscale phenomena (hydrophobic and hydrophilic hydration) with the mesoscale phenomenon of micellization.
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Affiliation(s)
- Adriana Šturcová
- Institute of Macromolecular Chemistry AS CR, v.v.i., Heyrovského nám. 2, 162 06 Prague 6, Czech Republic.
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