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Liu J, Yang D, Li S, Bai C, Tu C, Zhu F, Xin W, Li G, Luo Y. Synthesis and characterization of hydroxyl-terminated polybutadiene modified low temperature adaptive self-matting waterborne polyurethane. RSC Adv 2023; 13:7020-7029. [PMID: 36874934 PMCID: PMC9977405 DOI: 10.1039/d3ra00412k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 02/22/2023] [Indexed: 03/05/2023] Open
Abstract
Hydroxyl-terminated polybutadiene (HTPB) is a flexible telechelic compound with a main chain containing a slightly cross-linked activated carbon-carbon double bond and a hydroxyl group at the end. Therefore, in this paper, HTPB was used as a terminal diol prepolymer, and sulfonate AAS and carboxylic acid DMPA were used as hydrophilic chain extenders to prepare low-temperature adaptive self-matting waterborne polyurethane (WPU). Due to the fact that the non-polar butene chain in the HTPB prepolymer cannot form a hydrogen bond with the urethane group, and the solubility parameter difference between the hard segment formed by the urethane group is large, the gap of T g between the soft and hard segments of the WPU increases by nearly 10 °C, with more obvious microphase separation. At the same time, by adjusting the HTPB content, WPU emulsions with different particle sizes can be obtained, thereby obtaining WPU emulsions with good extinction properties and mechanical properties. The results show that HTPB-based WPU with a certain degree of microphase separation and roughness obtained by introducing a large number of non-polar carbon chains has good extinction ability, and the 60° glossiness can be as low as 0.4 GU. Meanwhile, the introduction of HTPB can improve the mechanical properties and low temperature flexibility of WPU. The T g,s (the glass transition temperature of soft segment) of WPU modified by the HTPB block decreased by 5.82 °C, and the ΔT g increased by 21.04 °C, indicating that the degree of microphase separation increased. At -50 °C, the elongation at break and tensile strength of WPU modified by HTPB can still maintain 785.2% and 76.7 MPa, which are 1.82 times and 2.91 times those of WPU with only PTMG as soft segment, respectively. The self-matting WPU coating prepared in this paper can meet the requirements of severe cold weather and has potential application prospects in the field of finishing.
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Affiliation(s)
| | | | | | | | | | | | - Wei Xin
- Beijing Institute of Technology China
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2
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Zarei MA, Bayat Y, Oskueyan G. Thermal, mechanical and morphological properties of plasticized polyurethane binders based on PEG and HTPB blends. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2022. [DOI: 10.1080/10601325.2022.2108442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Mohammad Ali Zarei
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran
| | - Yadollah Bayat
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran
| | - Ghasem Oskueyan
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran
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3
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Anderson BR, Gese N, Eilers H. Monitoring sub-surface chemical reactions in heterogeneous materials using wavefront-shaping-assisted bidirectional focusing. OPTICS LETTERS 2022; 47:2036-2039. [PMID: 35427330 DOI: 10.1364/ol.456361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
We have developed a bidirectional focusing microscope that utilizes feedback-assisted wavefront shaping to focus light inside a heterogenous material in order to monitor sub-surface chemical reactions. The bidirectional geometry is found to provide superior intensity enhancement relative to single-sided focusing, owing to increased mode control and long-range mesoscopic correlations. Also, we demonstrate the microscope's capability to measure sub-surface chemical reactions by optically monitoring the photodegradation of a Eu-doped organic molecular crystal embedded in a heterogeneous material using both fluorescence and Raman spectroscopy as probe techniques.
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4
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Akram N, Saeed M, Usman M. Role of Macrodiols in the Synthesis and Thermo-Mechanical Behavior of Anti-Tack Water Borne Polyurethane Dispersions. Polymers (Basel) 2022; 14:polym14030572. [PMID: 35160561 PMCID: PMC8839335 DOI: 10.3390/polym14030572] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/17/2022] [Accepted: 01/24/2022] [Indexed: 02/06/2023] Open
Abstract
The texture and molecular weight of polymer drastically affect the adhesion or tack strength. Waterborne polyurethane dispersions (WBPU) have been prepared using two different macrodiols of hydroxyl terminated polybutadiene (HTPB; Mn = 2912 g/mol−1) and four compositions of Polypropylene glycol (PPG Mn = 425, 1000, 2000, 2700 g/mol−1). The contents of the macrodiols have been varied using HTPB as 5, 10 and 15 mol%. The prepolymer of HTPB and Poly propylene glycol (PPG) have been developed using 4,4-Methylene bis(cyclohexyl isocyanate) (H12MDI) which is extended using 1, 4 butanediol (BD) followed by the dispersion of polymers in deionized water. Fourier Transform Infra-red spectroscopy (FTIR) is used to confirm the desired PU linkage. The probe tack graphs for tack analysis have not shown any plateau indicating absence of fibrillation. Two different values of glass transition temperature (Tg) have been observed for each dispersion using Differential Scanning Calorimetry(DSC). Storage modulus (E′) up to 3.97 MPa and (tanδ/E′) from 0.01–0.30 MPa−1 has been observed via Dynamic Mechanical Analysis (DMA). Introducing the HTPB has resulted in a decrease in the values of (tanδ/E′). No adhesion favorable parameters have been retrieved, indicating the molar variation a key factor in the development of anti-tack dispersions.
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Pournaghshband Isfahani A, Shahrooz M, Yamamoto T, Muchtar A, Ito MM, Yamaguchi D, Takenaka M, Sivaniah E, Ghalei B. Influence of microstructural variations on morphology and separation properties of polybutadiene-based polyurethanes. RSC Adv 2021; 11:15449-15456. [PMID: 35424034 PMCID: PMC8698806 DOI: 10.1039/d1ra00764e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/19/2021] [Indexed: 12/01/2022] Open
Abstract
Polybutadiene-based polyurethanes with different cis/trans/1,2-vinyl microstructure contents are synthesized. The phase morphology and physical properties of the polymers are investigated using spectroscopic analysis (FTIR and Raman), differential scanning calorimetry (DSC), X-ray scattering (WAXD and SAXS) and atomic force microscopy (AFM). In addition, their gas transport properties are determined for different gases at 4 bar and 25 °C. Thermodynamic incompatibility and steric hindrance of pendant groups are the dominant factors affecting the morphology and properties of the PUs. FTIR spectra, DSC, and SAXS analysis reveal a higher extent of phase mixing in high vinyl-content PUs. Moreover, the SAXS analysis and AFM phase images indicate smaller microdomains by increasing the vinyl content. Smaller permeable soft domains as well as the lower phase separation of the PUs with higher vinyl content create more tortuous pathways for gas molecules and deteriorate the gas permeability of the membranes.
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Affiliation(s)
- Ali Pournaghshband Isfahani
- Institute for Integrated Cell-Materials Sciences (iCeMS), Kyoto University Yoshida-Honmachi, Sakyo-ku 606-8501 Kyoto Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku 615-8510 Kyoto Japan
| | - Mahdi Shahrooz
- Institute for Sustainable Industries and Liveable Cities, Victoria University 14428 Melbourne VIC Australia
| | - Takuma Yamamoto
- Institute for Integrated Cell-Materials Sciences (iCeMS), Kyoto University Yoshida-Honmachi, Sakyo-ku 606-8501 Kyoto Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku 615-8510 Kyoto Japan
| | - Ansori Muchtar
- Institute for Integrated Cell-Materials Sciences (iCeMS), Kyoto University Yoshida-Honmachi, Sakyo-ku 606-8501 Kyoto Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku 615-8510 Kyoto Japan
| | - Masateru M Ito
- Institute for Integrated Cell-Materials Sciences (iCeMS), Kyoto University Yoshida-Honmachi, Sakyo-ku 606-8501 Kyoto Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku 615-8510 Kyoto Japan
| | - Daisuke Yamaguchi
- Institute for Integrated Cell-Materials Sciences (iCeMS), Kyoto University Yoshida-Honmachi, Sakyo-ku 606-8501 Kyoto Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku 615-8510 Kyoto Japan
| | - Mikihito Takenaka
- Institute for Integrated Cell-Materials Sciences (iCeMS), Kyoto University Yoshida-Honmachi, Sakyo-ku 606-8501 Kyoto Japan
- Institute for Chemical Research, Kyoto University Gokasho, Uji Kyoto 611-0011 Japan
| | - Easan Sivaniah
- Institute for Integrated Cell-Materials Sciences (iCeMS), Kyoto University Yoshida-Honmachi, Sakyo-ku 606-8501 Kyoto Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku 615-8510 Kyoto Japan
| | - Behnam Ghalei
- Institute for Integrated Cell-Materials Sciences (iCeMS), Kyoto University Yoshida-Honmachi, Sakyo-ku 606-8501 Kyoto Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku 615-8510 Kyoto Japan
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6
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Li S, Deng Y, Fu Z, Zhang H, Zhou C, Jiao Y. Hydroxyl‐terminated polybutadiene based waterborne polyurethane acrylate emulsions: Synthesis, characterization, and damping property. J Appl Polym Sci 2020. [DOI: 10.1002/app.50300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Songsong Li
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Yunjiao Deng
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Zhongyu Fu
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Huixuan Zhang
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Chao Zhou
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Yuhang Jiao
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
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7
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Guo X, Luo Y, Chen Y, Chen L, Jia D. Novel Hybrid Biomass Anti-Aging Filler for Styrene-Butadiene Rubber Composites with Antioxidative and Reinforcing Properties. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4045. [PMID: 32933081 PMCID: PMC7559003 DOI: 10.3390/ma13184045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/27/2020] [Accepted: 09/03/2020] [Indexed: 11/16/2022]
Abstract
Antioxidants are normally utilized to extend the service life of polymers due to the strong reducibility of the phenolic hydroxyl group of the hindered phenol structure. Inspired by this characteristic, we have introduced green tea polyphenol (TP) supported on a silica surface containing considerable phenolic hydroxyl groups to obtain a novel biomass anti-aging filler (BAF, denoted as silica-s-TP) to reinforce and improve the anti-aging property of rubber composites. The applying of silica-s-TP to enhance the thermal-oxidative stability and ultraviolet light (UV) aging resistance of styrene-butadiene rubber (SBR) was evaluated. The hybrid biomass anti-aging filler could not only uniformly disperse in the rubber matrix, giving rise to the excellent mechanical properties, but also enhance the properties of thermal-oxidative stability and UV aging resistance with the increasing silica-s-TP content of SBR distinctly. This study provides a mild and environmentally friendly strategy to prepare the functional biomass filler, which could be applied as not only a reinforcement filler but also an anti-aging additive in "green rubber".
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Affiliation(s)
- Xiaohui Guo
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China; (X.G.); (Y.C.); (D.J.)
| | - Yuanfang Luo
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China; (X.G.); (Y.C.); (D.J.)
| | - Yongjun Chen
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China; (X.G.); (Y.C.); (D.J.)
| | - Lijuan Chen
- Center for Advanced Analytical Science, c/o School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
- School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Demin Jia
- Key Lab of Guangdong High Property and Functional Macromolecular Materials, Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou 510640, China; (X.G.); (Y.C.); (D.J.)
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8
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Aldoori H, Bouberka Z, Nadim A, Agguine Y, Eddarir S, Supiot P, Foissac C, Maschke U. Photodegradation of Decabromo Diphenyl Ether Flame Retardant in Poly (Acrylonitrile Butadiene Styrene) (ABS). J MACROMOL SCI B 2020. [DOI: 10.1080/00222348.2020.1763607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Hussam Aldoori
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 – UMET – Unité Matériaux et Transformations, Lille, France
- Laboratoire Physico-Chimie des Matériaux-Catalyse et Environnement (LPCM-CE), Université des Sciences et de la Technologie d’Oran « USTO », Oran, Algeria
| | - Zohra Bouberka
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 – UMET – Unité Matériaux et Transformations, Lille, France
- Laboratoire Physico-Chimie des Matériaux-Catalyse et Environnement (LPCM-CE), Université des Sciences et de la Technologie d’Oran « USTO », Oran, Algeria
| | - Abdelouahab Nadim
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 – UMET – Unité Matériaux et Transformations, Lille, France
| | - Yassine Agguine
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 – UMET – Unité Matériaux et Transformations, Lille, France
| | - Said Eddarir
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 – UMET – Unité Matériaux et Transformations, Lille, France
| | - Philippe Supiot
- Faculté des Sciences et Technologies, Université de Lille, Villeneuve d’Ascq Cedex, France
| | - Corinne Foissac
- Faculté des Sciences et Technologies, Université de Lille, Villeneuve d’Ascq Cedex, France
| | - Ulrich Maschke
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 – UMET – Unité Matériaux et Transformations, Lille, France
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9
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Akram N, Zia KM, Saeed M, Khosa MK, Khan WG, Arain MA. Compositional effect on the deformation behavior of polyurethane pressure‐sensitive adhesive thin films. J Appl Polym Sci 2020. [DOI: 10.1002/app.48395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Nadia Akram
- Department of ChemistryGovernment College University Faisalabad 38030 Pakistan
| | - Khalid Mahmood Zia
- Department of ChemistryGovernment College University Faisalabad 38030 Pakistan
| | - Muhammad Saeed
- Department of ChemistryGovernment College University Faisalabad 38030 Pakistan
| | | | - Waheed Gul Khan
- Department of ChemistryQuaid‐i‐Azam University Islamabad 45320 Pakistan
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10
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Volkova ER. Rheological, Structural, and Strength Characteristics of Cold-Cured Polyurethane Synthesized in the Presence of the Complex of Tributyl Phosphate with Zinc Dichloride. RUSS J APPL CHEM+ 2020. [DOI: 10.1134/s1070427219120174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Rao BN, Sastry P, Jana T. Structure-property relationships of ferrocene functionalized segmented polyurethane. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Xie F, Zhang T, Bryant P, Kurusingal V, Colwell JM, Laycock B. Degradation and stabilization of polyurethane elastomers. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2018.12.003] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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13
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Marcano A, Fatyeyeva K, Koun M, Dubuis P, Grimme M, Marais S. Recent developments in the field of barrier and permeability properties of segmented polyurethane elastomers. REV CHEM ENG 2018. [DOI: 10.1515/revce-2017-0033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Abstract
Polyurethane (PU) elastomers represent an important class of segmented copolymers. Thanks to many available chemical compositions, a rather broad range of chemical, physical, and biocompatible properties of PU can be obtained. These polymers are often characterized by high tensile and tear strength, elongation, fatigue life, and wear resistance. However, their relatively high permeability towards gases and water as well as their biocompatibility still limits the PU’s practical application, especially for biomedical use, for example, in implants and medical devices. In this review, the barrier and permeability properties of segmented PUs related to their chemical structure and physical and chemical properties have been discussed, including the latest developments and different approaches to improve the PU barrier properties.
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Affiliation(s)
- Aracelys Marcano
- Normandie University, UNIROUEN, INSA ROUEN, CNRS, PBS , 76000 Rouen , France
- CARMAT SA, 36 Avenue de l’Europe, Immeuble l’Etendard , 78140 Vélizy Villacoublay , France
| | - Kateryna Fatyeyeva
- Normandie University, UNIROUEN, INSA ROUEN, CNRS, PBS , 76000 Rouen , France
| | - Malys Koun
- ALTEN, 221bis Bd. Jean Jaurès , 92100 Boulogne-Billancourt , France
| | - Pascal Dubuis
- INOPROD, 46 Rue de Sarlieve , 63800 Cournon D’Auvergne , France
| | - Marc Grimme
- CARMAT SA, 36 Avenue de l’Europe, Immeuble l’Etendard , 78140 Vélizy Villacoublay , France
| | - Stéphane Marais
- Normandie University, UNIROUEN, INSA ROUEN, CNRS, PBS , 76000 Rouen , France
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14
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Morphological studies of polyurethane based pressure sensitive adhesives by tapping mode atomic force microscopy. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1591-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Tong X, Huang J, Mei J, Ge J, Han L, Huang G. Characterization of Controlled Release Fertilizer by Infrared Microspectroscopy. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1419364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xin Tong
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University (East Campus), Beijing, China
| | - Jing Huang
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
| | - Jiaqi Mei
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University (East Campus), Beijing, China
| | - Jinyi Ge
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University (East Campus), Beijing, China
| | - Lujia Han
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University (East Campus), Beijing, China
| | - Guangqun Huang
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University (East Campus), Beijing, China
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16
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Dossi E, Akhavan J, Gaulter SE, Williams RG, Doe WJ. Cross‐linking of Hydroxyl‐terminated Polyols with Triethyleneglycol Diglycidyl Ether: An Alternative to Toxic Isocyanates. PROPELLANTS EXPLOSIVES PYROTECHNICS 2018. [DOI: 10.1002/prep.201700220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Eleftheria Dossi
- Centre for Defence ChemistryCranfield University, Defence, Academy of United Kingdom Shrivenham SN6 8LA UK
| | - Jacqueline Akhavan
- Centre for Defence ChemistryCranfield University, Defence, Academy of United Kingdom Shrivenham SN6 8LA UK
| | - Sally E. Gaulter
- Centre for Defence ChemistryCranfield University, Defence, Academy of United Kingdom Shrivenham SN6 8LA UK
| | - Richard G. Williams
- Royal Australian Air Force, Department of Defence Penrith NSW 2750 Australia Richard Williams
| | - William J. Doe
- DE&SDESG Graduate Office, MoD Abbey Wood Bristol BS34 8JH UK
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17
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Preparation and Characterization of Fluorinated Hydrophobic UV-Crosslinkable Thiol-Ene Polyurethane Coatings. COATINGS 2017. [DOI: 10.3390/coatings7080117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Effect of Starch Loading on the Thermo-Mechanical and Morphological Properties of Polyurethane Composites. MATERIALS 2017; 10:ma10070777. [PMID: 28773134 PMCID: PMC5551820 DOI: 10.3390/ma10070777] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 06/10/2017] [Accepted: 06/13/2017] [Indexed: 11/16/2022]
Abstract
The advancements in material science and technology have made polyurethane (PU) one of the most important renewable polymers. Enhancing the physio-chemical and mechanical properties of PU has become the theme of this and many other studies. One of these enhancements was carried out by adding starch to PU to form new renewable materials called polyurethane-starch composites (PUS). In this study, PUS composites are prepared by adding starch at 0.5, 1.0, 1.5, and 2.0 wt.% to a PU matrix. The mechanical, thermal, and morphological properties of PU and PUS composites were investigated. Scanning electron microscope (SEM) images of PU and PUS fractured surfaces show cracks and agglomeration in PUS at 1.5 wt.% starch. The thermo-mechanical properties of the PUS composites were improved as starch content increased to 1.5 wt.% and declined by more starch loading. Despite this reduction, the mechanical properties were still better than that of neat PU. The mechanical strength increased as starch content increased to 1.5 wt.%. The tensile, flexural, and impact strengths of the PUS composites were found to be 9.62 MPa, 126.04 MPa, and 12.87 × 10-3 J/mm², respectively, at 1.5 wt.% starch. Thermal studies showed that the thermal stability and crystallization temperature of the PUS composites increased compared to that of PU. The loss modulus curves showed that neat PU crystallizes at 124 °C and at 127 °C for PUS-0.5 wt.% and rises with increasing loading from 0.5 to 2 wt.%.
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19
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Lucio B, de la Fuente JL. Structural and thermal degradation properties of novel metallocene-polyurethanes. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2016.12.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Cao Z, Zhou Q, Jie S, Li BG. High cis-1,4 Hydroxyl-Terminated Polybutadiene-Based Polyurethanes with Extremely Low Glass Transition Temperature and Excellent Mechanical Properties. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b04921] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhe Cao
- State Key Laboratory
of Chemical Engineering, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qinzhuo Zhou
- State Key Laboratory
of Chemical Engineering, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Suyun Jie
- State Key Laboratory
of Chemical Engineering, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Bo-Geng Li
- State Key Laboratory
of Chemical Engineering, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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21
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Zou R, Tan J, Liu K, Liang L, Cheng X, Zhang X, Zhang L, Yue D. A hydrogenated hydroxy-terminated butadiene–acrylonitrile copolymer-based polyurethane elastomer with improved mechanical properties and aging resistance. RSC Adv 2016. [DOI: 10.1039/c5ra25789a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A hydrogenated hydroxy-terminated butadiene–acrylonitrile copolymer (HHTBN)-based polyurethane elastomer (PUE) was prepared by using HHTBN as the soft segments in a casting method.
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Affiliation(s)
- Rui Zou
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
| | - Jing Tan
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
| | - Kun Liu
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
| | - Lu Liang
- Beijing Institute of Aeronautical Materials AVIC
- Beijing 100095
- China
| | - Xingwang Cheng
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
| | - Xu Zhang
- Beijing Institute of Aeronautical Materials AVIC
- Beijing 100095
- China
| | - Liqun Zhang
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
| | - Dongmei Yue
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials
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Macocinschi D, Filip D, Zaltariov MF, Varganici CD. Thermal and hydrolytic stability of silver nanoparticle polyurethane biocomposites for medical applications. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2015.09.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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23
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Triazine functionalized hydroxyl terminated polybutadiene polyurethane: Influence of triazine structure. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.09.046] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Lee S, Choi CH, Hong IK, Lee JW. Polyurethane curing kinetics for polymer bonded explosives: HTPB/IPDI binder. KOREAN J CHEM ENG 2015. [DOI: 10.1007/s11814-014-0366-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Lee S, Choi JH, Hong IK, Lee JW. Curing behavior of polyurethane as a binder for polymer-bonded explosives. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.05.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Rath SK, Aswal VK, Sharma C, Joshi K, Patri M, Harikrishnan G, Khakhar DV. Mechanistic origins of multi-scale reinforcements in segmented polyurethane-clay nanocomposites. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.08.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Saviello D, Pouyet E, Toniolo L, Cotte M, Nevin A. Synchrotron-based FTIR microspectroscopy for the mapping of photo-oxidation and additives in acrylonitrile–butadiene–styrene model samples and historical objects. Anal Chim Acta 2014; 843:59-72. [DOI: 10.1016/j.aca.2014.07.021] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 07/10/2014] [Accepted: 07/13/2014] [Indexed: 01/18/2023]
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28
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Tang Q, Ai Q, Yang R, He J. Effect of thermal-oxidative aging on the microstructure of thermoplastic poly(ether-urethane). POLYMER SCIENCE SERIES A 2014. [DOI: 10.1134/s0965545x14040142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ge J, Huang G, Yang Z, Huang J, Han L. Characterization of the dynamic thickness of the aerobic layer during pig manure aerobic composting by Fourier transform infrared microspectroscopy. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:5043-5050. [PMID: 24697245 DOI: 10.1021/es500070z] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new method for characterizing the aerobic layer thickness in pig manure based on Fourier transform infrared microspectroscopy (FTIRM) is presented to improve the anaerobic/aerobic co-process mechanism, to ensure adequate oxygen supply and, thus, minimize methane emissions during aerobic composting. Freeze-dried manure particles were microtomed into 10 μm thick sections; the spectral range, spectral resolution, and pixel dimensions in the transmission spectra were 4000-650 cm(-1), 16 cm(-1), and 6.25 × 6.25 μm, respectively. A mean spectrum of 16 scans was used for the second-derivative analysis with nine smoothing points. This is the first attempt at determining the oxidation profile of composting particles according to the radial variations in second-derivative spectra at 2856 and 1568 cm(-1), which are attributed to the reactants and products of the oxidation, respectively. In addition, an intermediate area is detected between the aerobic layer and anaerobic core. The experimental values of the aerobic layer thickness are consistent with the estimates, and an exponential increase is observed, which is influenced by multiple dynamic factors. However, the contribution of each factor to dynamic variations in the aerobic layer thickness should be investigated using available methods.
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Affiliation(s)
- Jinyi Ge
- Biomass Resources and Utilization Laboratory, College of Engineering, China Agricultural University , Beijing 100083, People's Republic of China
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30
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Lucio B, de la Fuente JL. Rheokinetic analysis on the formation of metallo-polyurethanes based on hydroxyl-terminated polybutadiene. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2013.10.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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Malkappa K, Jana T. Simultaneous Improvement of Tensile Strength and Elongation: An Unprecedented Observation in the Case of Hydroxyl Terminated Polybutadiene Polyurethanes. Ind Eng Chem Res 2013. [DOI: 10.1021/ie401923e] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kuruma Malkappa
- School of Chemistry, University of Hyderabad, Hyderabad, Andhra Pradesh 500046, India
| | - Tushar Jana
- School of Chemistry, University of Hyderabad, Hyderabad, Andhra Pradesh 500046, India
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Akram N, Gurney RS, Zuber M, Ishaq M, Keddie JL. Influence of Polyol Molecular Weight and Type on the Tack and Peel Properties of Waterborne Polyurethane Pressure-Sensitive Adhesives. MACROMOL REACT ENG 2013. [DOI: 10.1002/mren.201300109] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nadia Akram
- Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Robert S. Gurney
- Department of Physics; University of Surrey; Guildford Surrey GU2 7XH United Kingdom
| | - Mohammad Zuber
- Department of Applied Chemistry; Government College University; Faisalabad 38030 Pakistan
| | - Muhammad Ishaq
- Department of Chemistry; Quaid-i-Azam University; Islamabad 45320 Pakistan
| | - Joseph L. Keddie
- Department of Physics; University of Surrey; Guildford Surrey GU2 7XH United Kingdom
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33
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Wang X, Fu Y, Guo P, Ren L, Wang H, Qiang T. Synthesis, characterization, and properties of PCDL aliphatic hyperbranched polyurethane coatings. J Appl Polym Sci 2013. [DOI: 10.1002/app.39482] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xuechuan Wang
- Key Laboratory of Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an; 710021; Shaanxi; People's Republic of China
| | - Yuqiao Fu
- Key Laboratory of Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an; 710021; Shaanxi; People's Republic of China
| | - Peiying Guo
- Key Laboratory of Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an; 710021; Shaanxi; People's Republic of China
| | - Longfang Ren
- Key Laboratory of Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an; 710021; Shaanxi; People's Republic of China
| | - Haijun Wang
- Key Laboratory of Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an; 710021; Shaanxi; People's Republic of China
| | - Taotao Qiang
- Key Laboratory of Chemistry and Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology; Xi'an; 710021; Shaanxi; People's Republic of China
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Lucas TC, Barbosa MP, de Oliveira AC. [Reprocessing validation of angiographic cardiac catheters: an evaluation of the functionality and integrity]. Rev Esc Enferm USP 2011; 44:947-55. [PMID: 21337776 DOI: 10.1590/s0080-62342010000400013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to validate the reprocessing of angiographic cardiac catheters regarding their characteristics of mechanical functionality and the molecular and micro-structural integrity of the polymeric chain.This is an experimental, applied, comparative and controlled study. A simulation set was built for a left coronary angiography in order to simulate mechanical and biological stress in the catheters. Traction tests were performed for the functionality and the integrity was tested through Infrared Spectrometry and Scanning Electronic Microscopy. The study evidenced a tendency to an increase in rigidity at every increment of the reprocessing number (p < 0.05). The changes in the mechanical properties and molecular structures of the polymers were more evident as of the fifth reprocessing. Micrographies revealed an increase in rugosity as of the forth reprocessing. The results of this study may contribute to the elaboration of reprocessing protocols and a systematic surveillance of the reutilization of single use materials, not only due to their economical relevance, but especially from the ethical, legal, biological, functional and care point of view.
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Affiliation(s)
- Thabata Coaglio Lucas
- Pós-Graduação em Engenharia Mecânica pela Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.
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Libardi J, Ravagnani SP, Morais AMF, Cardoso AR. Diffusion of plasticizer in a solid propellant based on hydroxyl-terminated polybutadiene. POLIMEROS 2010. [DOI: 10.1590/s0104-14282010005000048] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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