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Mai J, Chan CM, Laycock B, Pratt S. Understanding the Reaction of Hydroxy-Terminated Poly(3-hydroxybutyrate- co-3-hydroxyvalerate) (PHBV) Random Copolymers with a Monoisocyanate. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Affiliation(s)
- Jingjing Mai
- School of Chemical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Clement Matthew Chan
- School of Chemical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Bronwyn Laycock
- School of Chemical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Steven Pratt
- School of Chemical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia
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2
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Blaj DA, Diaconu AD, Harabagiu V, Peptu C. Polyethylene Glycol-Isophorone Diisocyanate Polyurethane Prepolymers Tailored Using MALDI MS. MATERIALS (BASEL, SWITZERLAND) 2023; 16:821. [PMID: 36676558 PMCID: PMC9862538 DOI: 10.3390/ma16020821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
The reaction of diols with isocyanates, leading to mono-functional and di-functional prepolymers may be investigated using various characterization methods which show the overall conversion of isocyanate monomers. On the other hand, matrix-assisted laser desorption ionization mass spectrometry (MALDI MS) polymer characterization can be employed to identify the monomer units, the end-group functionalities, molecular weight averages, and to determine the copolymer sequence. Herein, we focus on prepolymer synthesis using isophorone diisocyanate (IPDI), a widely used diisocyanate for prepolymers preparation, especially in waterborne polyurethane materials. Thus, the reaction between polyethylene glycol diol and IPDI was in-depth investigated by mass spectrometry to determine the influence of the reaction parameters on the prepolymer's structure. The relative content of the different functional oligomer species at given reaction times was determined in the reaction mixture. More specifically, the offline analysis revealed the influence of reaction parameters such as reaction temperature, the concentration of reactants, and the amount of dibutyltin dilaurate catalyst. The established MALDI MS analysis involved measurements of samples, first, directly collected from the reaction mixture and secondly, following derivatization with methanol. The obtained results revealed the effects of reaction parameters on the functionalization reaction with isocyanates, allowing to achieve a better reaction control.
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Chen JB, Lin SY, Ahmad N, Kuo CFJ. Design of Acrylate-Terminated Polyurethane for Nylon Seamless Bonding Fabric Part I: Design of the End-Capping Thermoplastic Polyurethane Adhesive with Acrylate Copolymer. Polymers (Basel) 2022; 14:polym14194079. [PMID: 36236027 PMCID: PMC9571859 DOI: 10.3390/polym14194079] [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: 09/02/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
This series of studies aims to design acrylate-terminated polyurethanes for use in nylon seamless bonded fabrics. The first part used N,N-dimethylacrylamide (DMAA) and methyl methacrylate (MMA) to replace the chain extender in polyurethane synthesis as end-capping agent to synthesize thermoplastic polyurethane (TPU) adhesive. The molecular weight of the TPU is controlled to further influence the mechanical and processing properties of the polyurethane. Here, polytetramethylene ether glycol (PTMG) and 4,4-methylene diphenyl diisocyanate (MDI) were polymerized, and then a blocking agent was added thereto. The results show that the characteristic peaks of benzene ring and carbamate of TPU adhesive are at 1596 cm−1 and 1413 cm−1, respectively, while the characteristic peaks of DMAA are at 1644 cm−1 and 1642 cm−1 in the FT-IR spectrum. There is an absorption peak –N=C=O– which is not shown near 2268 cm−1, which proves that the structure of TPU contains the molecular structure of capping agent, PTMG and MDI. When the DMAA concentration in the capping agent was increased from 3.0 wt% to 10 wt%, the –C=O (H-bond) area percentage of hydrogen bonds formed at 1711 cm−1 increased from 41.7% to 57.6%, while the –NH (H bond) produced at 3330 cm−1 increased from 70% to 81%. These phenomena suggest that increasing the concentration of DMAA capping agent can effectively promote the formation of complex supramolecular network structures by hydrogen bonding in TPU. The content and concentration of the capping agent affects the molecular weight of the TPU. Chain growth is terminated when molecular weight growth can be effectively controlled and reduced. It was observed in thermal analysis that with increasing DMAA concentration in the molecular structure, the concentration of capping agent in TPU, hydrogen bonding force between hard segments, melting point (Tmh) and melting enthalpy (ΔH) all increased the capping agent. The pyrolysis temperature of TPU is increased by 10–20 °C.
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4
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Characterization of polyurethane and a silk fibroin-polyurethane composite fiber studied with NMR spectroscopies. Polym J 2022. [DOI: 10.1038/s41428-022-00629-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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5
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Lucio B, Fuente JL. Rheological kinetics of ferrocenylsilane functionalized polyurethanes based on 4,4'‐methylenediphenyl diisocyanate for advanced energetic materials. J Appl Polym Sci 2022. [DOI: 10.1002/app.51765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Beatriz Lucio
- Department of Chemical and Environmental Engineering University of the Basque Country EHU/UPV Bilbao Spain
| | - José Luis Fuente
- Dpto. de Propulsión Instituto Nacional de Técnica Aeroespacial “Esteban Terradas”, INTA Torrejón de Ardoz Madrid Spain
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Di Bisceglie F, Quartinello F, Vielnascher R, Guebitz GM, Pellis A. Cutinase-Catalyzed Polyester-Polyurethane Degradation: Elucidation of the Hydrolysis Mechanism. Polymers (Basel) 2022; 14:polym14030411. [PMID: 35160402 PMCID: PMC8838978 DOI: 10.3390/polym14030411] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/10/2022] [Accepted: 01/17/2022] [Indexed: 02/01/2023] Open
Abstract
Polyurethanes (PU) are one of the most-used classes of synthetic polymers in Europe, having a considerable impact on the plastic waste management in the European Union. Therefore, they represent a major challenge for the recycling industry, which requires environmentally friendly strategies to be able to re-utilize their monomers without applying hazardous and polluting substances in the process. In this work, enzymatic hydrolysis of a polyurethane-polyester (PU-PE) copolymer using Humicola insolens cutinase (HiC) has been investigated in order to achieve decomposition at milder conditions and avoiding harsh chemicals. PU-PE films have been incubated with the enzyme at 50 °C for 168 h, and hydrolysis has been followed throughout the incubation. HiC effectively hydrolysed the polymer, reducing the number average molecular weight (Mn) and the weight average molecular weight (Mw) by 84% and 42%, respectively, as shown by gel permeation chromatography (GPC), while scanning electron microscopy showed cracks at the surface of the PU-PE films as a result of enzymatic surface erosion. Furthermore, Fourier Transform Infrared (FTIR) analysis showed a reduction in the peaks at 1725 cm−1, 1164 cm−1 and 1139 cm−1, indicating that the enzyme preferentially hydrolysed ester bonds, as also supported by the nuclear magnetic resonance spectroscopy (NMR) results. Liquid chromatography time-of-flight/mass spectrometry (LC-MS-Tof) analysis revealed the presence in the incubation supernatant of all of the monomeric constituents of the polymer, thus suggesting that the enzyme was able to hydrolyse both the ester and the urethane bonds of the polymer.
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Affiliation(s)
- Federico Di Bisceglie
- Department of Agrobiotechnology, University of Natural Resources and Life Sciences Vienna, 3430 Tulln an der Donau, Austria; (F.D.B.); (R.V.); (G.M.G.)
| | - Felice Quartinello
- Department of Agrobiotechnology, University of Natural Resources and Life Sciences Vienna, 3430 Tulln an der Donau, Austria; (F.D.B.); (R.V.); (G.M.G.)
- Austrian Centre of Industrial Biotechnology, 3430 Tulln an der Donau, Austria
- Correspondence: (F.Q.); (A.P.)
| | - Robert Vielnascher
- Department of Agrobiotechnology, University of Natural Resources and Life Sciences Vienna, 3430 Tulln an der Donau, Austria; (F.D.B.); (R.V.); (G.M.G.)
| | - Georg M. Guebitz
- Department of Agrobiotechnology, University of Natural Resources and Life Sciences Vienna, 3430 Tulln an der Donau, Austria; (F.D.B.); (R.V.); (G.M.G.)
- Austrian Centre of Industrial Biotechnology, 3430 Tulln an der Donau, Austria
| | - Alessandro Pellis
- Department of Agrobiotechnology, University of Natural Resources and Life Sciences Vienna, 3430 Tulln an der Donau, Austria; (F.D.B.); (R.V.); (G.M.G.)
- Austrian Centre of Industrial Biotechnology, 3430 Tulln an der Donau, Austria
- Dipartimento di Chimica e Chimica Industriale, Universitá degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
- Correspondence: (F.Q.); (A.P.)
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7
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Dall Agnol L, Ornaghi HL, Monticeli F, Dias FTG, Bianchi O. Polyurethanes synthetized with polyols of distinct molar masses: Use of the artificial neural network for prediction of degree of polymerization. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25702] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lucas Dall Agnol
- Postgraduate Program in Materials Science and Engineering (PGMAT) University of Caxias do Sul (UCS) Caxias do Sul Rio Grande do Sul Brazil
| | - Heitor Luiz Ornaghi
- Federal University for Latin American Integration (UNILA) Foz do Iguaçu Parana Brazil
| | - Francisco Monticeli
- Department of Materials and Technology School of Engineering, São Paulo State University (Unesp) Guaratinguetá Brazil
| | - Fernanda Trindade Gonzalez Dias
- Postgraduate Program in Technology and Materials Engineering (PPG‐TEM) Federal Institute of Education, Science and Technology of Rio Grande do Sul (IFRS) Campus Feliz Rio Grande do Sul Brazil
| | - Otávio Bianchi
- Postgraduate Program in Materials Science and Engineering (PGMAT) University of Caxias do Sul (UCS) Caxias do Sul Rio Grande do Sul Brazil
- Department of Materials Engineering (DEMAT) Federal University of Rio Grande do Sul (UFRGS) Porto Alegre Rio Grande do Sul Brazil
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8
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Kim HN, Lee DW, Ryu H, Song GS, Lee DS. Preparation and Characterization of Isosorbide-Based Self-Healable Polyurethane Elastomers with Thermally Reversible Bonds. Molecules 2019; 24:E1061. [PMID: 30889870 PMCID: PMC6471067 DOI: 10.3390/molecules24061061] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/14/2019] [Accepted: 03/14/2019] [Indexed: 11/17/2022] Open
Abstract
Polyurethane (PU) is a versatile polymer used in a wide range of applications. Recently, imparting PU with self-healing properties has attracted much interest to improve the product durability. The self-healing mechanism conceivably occurs through the existence of dynamic reversible bonds over a specific temperature range. The present study investigates the self-healing properties of 1,4:3,6-dianhydrohexitol-based PUs prepared from a prepolymer of poly(tetra-methylene ether glycol) and 4,4'-methylenebis(phenyl isocyanate) with different chain extenders (isosorbide or isomannide). PU with the conventional chain extender 1,4-butanediol was prepared for comparison. The urethane bonds in 1,4:3,6-dianhydrohexitol-based PUs were thermally reversible (as confirmed by the generation of isocyanate peaks observed by Fourier transform infrared spectroscopy) at mildly elevated temperatures and the PUs showed good mechanical properties. Especially the isosorbide-based polyurethane showed potential self-healing ability under mild heat treatment, as observed in reprocessing tests. It is inferred that isosorbide, bio-based bicyclic diol, can be employed as an efficient chain extender of polyurethane prepolymers to improve self-healing properties of polyurethane elastomers via reversible features of the urethane bonds.
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Affiliation(s)
- Han-Na Kim
- Division of Semiconductor and Chemical Engineering, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju 54896, Korea.
| | - Dae-Woo Lee
- Division of Semiconductor and Chemical Engineering, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju 54896, Korea.
| | - Hoon Ryu
- Industrial Biotechnology Program, Chemical R&D Center, Samyang Corporation, Daedeok-daero 730, Yuseong-gu, Daejeon 34055, Korea.
| | - Gwang-Seok Song
- Industrial Biotechnology Program, Chemical R&D Center, Samyang Corporation, Daedeok-daero 730, Yuseong-gu, Daejeon 34055, Korea.
| | - Dai-Soo Lee
- Division of Semiconductor and Chemical Engineering, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju 54896, Korea.
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Polo ML, Pesoa JI, Nicolau VV, Spontón ME, Estenoz DA, Meira GR. Linear segmented polyurethanes. II. A mathematical model for the prepolymerization stage. J Appl Polym Sci 2019. [DOI: 10.1002/app.46946] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M. L. Polo
- INTEC; Universidad Nacional del Litoral and CONICET; 3000 Santa Fe Argentina
| | - J. I. Pesoa
- INTEC; Universidad Nacional del Litoral and CONICET; 3000 Santa Fe Argentina
| | - V. V. Nicolau
- GPol; Universidad Tecnológica Nacional, Regional San Francisco; 2400 Córdoba Argentina
| | - M. E. Spontón
- INTEC; Universidad Nacional del Litoral and CONICET; 3000 Santa Fe Argentina
| | - D. A. Estenoz
- INTEC; Universidad Nacional del Litoral and CONICET; 3000 Santa Fe Argentina
| | - G. R. Meira
- INTEC; Universidad Nacional del Litoral and CONICET; 3000 Santa Fe Argentina
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10
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Lucio B, de la Fuente JL. Kinetic and chemorheological modelling of the polymerization of 2,4- Toluenediisocyanate and ferrocene-functionalized hydroxyl-terminated polybutadiene. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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11
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Polo ML, Spontón ME, Jaramillo F, Estenoz DA, Meira GR. Linear segmented polyurethanes: I. A kinetics study. J Appl Polym Sci 2018. [DOI: 10.1002/app.45747] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mara L. Polo
- INTEC; Universidad Nacional del Litoral-CONICET; Santa Fe Argentina
| | | | | | - Diana A. Estenoz
- INTEC; Universidad Nacional del Litoral-CONICET; Santa Fe Argentina
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12
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Kwiatkowski K, Nachman M. The Abrasive Wear Resistance of the Segmented Linear Polyurethane Elastomers Based on a Variety of Polyols as Soft Segments. Polymers (Basel) 2017; 9:polym9120705. [PMID: 30966001 PMCID: PMC6418577 DOI: 10.3390/polym9120705] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 12/05/2017] [Accepted: 12/06/2017] [Indexed: 12/02/2022] Open
Abstract
The presented results make an original contribution to the development of knowledge on the prediction and/or modeling of the abrasive wear properties of polyurethanes. A series of segmented linear polyurethane elastomers (PUR)—In which the hard segments consist of 4,4′-methylene bis(phenylisocyanate) and 1,4-butanodiol, whilst polyether, polycarbonate, or polyester polyols constitute the soft segments—Were synthesized and characterized. The hardness and wear performance as functions of the variable chemical composition of polyurethane elastomers were evaluated in order to define the relationship between studied factors. The microstructure was characterized in detail, including analysis of the hydrogen bonding by Fourier transformed infrared (FT-IR) spectroscopy and the phase structure by X-ray scattering (WAXS) and differential scanning calorimetry (DSC) methods. The presented studies provide the key features of the polymer composition affecting the abrasive resistance as well as attempts to explain the origin of the differences in the polyurethane elastomers’ performance.
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Affiliation(s)
- Konrad Kwiatkowski
- Department of Mechanics and Machine Design Fundamentals, West Pomeranian University of Technology Szczecin, Al. Piastów 19, 70-310 Szczecin, Poland.
| | - Małgorzata Nachman
- Institute of Materials Science and Engineering, West Pomeranian University of Technology Szczecin, Al. Piastów 19, 70-310 Szczecin, Poland.
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14
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Nagy T, Antal B, Dékány-Adamoczky A, Karger-Kocsis J, Zsuga M, Kéki S. Uncatalyzed reactions of 4,4′-diphenylmethane-diisocyanate with polymer polyols as revealed by matrix-assisted laser desorption/ionization mass spectrometry. RSC Adv 2016. [DOI: 10.1039/c6ra06671b] [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
The reactivities of various polymer polyols towards MDI were evaluated using MALDI-TOF mass spectrometry.
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Affiliation(s)
- Tibor Nagy
- Department of Applied Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | - Borbála Antal
- Department of Applied Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | | | - József Karger-Kocsis
- Department of Polymer Engineering
- Budapest University of Technology and Economics
- H-1111 Budapest
- Hungary
| | - Miklós Zsuga
- Department of Applied Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | - Sándor Kéki
- Department of Applied Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
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15
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Qin XX, Cheng ZL. Application of ionic liquids as a catalyst in the synthesis of polyvinyl butyral (PVB) polymer. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2015.07.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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A novel PVB based polymer membrane and its application in gel polymer electrolytes for lithium-ion batteries. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.01.010] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Yang P, Li T, Li J. Catalytic Kinetics and Mechanism Transformation of Fe(acac)3
on the Urethane Reaction of 1,2-Propanediol with Phenyl Isocyanate. INT J CHEM KINET 2013. [DOI: 10.1002/kin.20798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pengfei Yang
- Shandong Provincial Key Laboratory of Fine Chemicals; Shandong Polytechnic University; Jinan 250353 People's Republic of China
| | - Tianduo Li
- Shandong Provincial Key Laboratory of Fine Chemicals; Shandong Polytechnic University; Jinan 250353 People's Republic of China
| | - Junying Li
- Shandong Provincial Key Laboratory of Fine Chemicals; Shandong Polytechnic University; Jinan 250353 People's Republic of China
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18
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Ren Y, Lian F, Wen Y, Guan HY. A novel PVFM based membranes prepared via phase inversion method and its application in GPE. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.07.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Yang PF, Yu YH, Li TD, Zhang M. Kinetic Studies on the Urethane Reaction of Propanediol with Isocyanate in Nitrogenous Solvents. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2013. [DOI: 10.1080/1023666x.2013.747126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Gaudin F, Sintes-Zydowicz N. Correlation between the polymerization kinetics and the chemical structure of poly(urethane–urea) nanocapsule membrane obtained by interfacial step polymerization in miniemulsion. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.09.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Yang PF, Yu YH, Wang SP, Li TD. The amount effect of catalyst on the urethane reaction of o-hydroxybenzyl alcohol. CHINESE CHEM LETT 2012. [DOI: 10.1016/j.cclet.2011.10.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Oprea S. Degradation of crosslinked poly(ester-urethanes) elastomers in distilled water: Influence of hard segment. J Appl Polym Sci 2011. [DOI: 10.1002/app.35196] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Yang PF, De Han Y, Li TD, Li JY. Effects of solvent polarity on the reaction of phenol with tolylene-2,4-diisocyanate. J Appl Polym Sci 2011. [DOI: 10.1002/app.34479] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Pei Y, Li H, Liu H, Zhang Y. Kinetic Study of Methoxycarbonylation of Methylene Dianiline with Dimethyl Carbonate Using Lead Acetate Catalyst. Ind Eng Chem Res 2011. [DOI: 10.1021/ie1017095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yixia Pei
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
- Graduate School of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Huiquan Li
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Haitao Liu
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Yi Zhang
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
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Corcuera M, Rueda L, Fernandez d’Arlas B, Arbelaiz A, Marieta C, Mondragon I, Eceiza A. Microstructure and properties of polyurethanes derived from castor oil. Polym Degrad Stab 2010. [DOI: 10.1016/j.polymdegradstab.2010.03.001] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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The reaction of o-hydroxybenzyl alcohol with phenyl isocyanate in polar solvents. REACTION KINETICS MECHANISMS AND CATALYSIS 2010. [DOI: 10.1007/s11144-010-0202-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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The synthesis and characterization of new thermoplastic poly(carbonate-urethane) elastomers derived from HDI and aliphatic–aromatic chain extenders. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.06.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Fernández d'Arlas B, Rueda L, de la Caba K, Mondragon I, Eceiza A. Microdomain composition and properties differences of biodegradable polyurethanes based on MDI and HDI. POLYM ENG SCI 2008. [DOI: 10.1002/pen.20983] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Eceiza A, Martin M, de la Caba K, Kortaberria G, Gabilondo N, Corcuera M, Mondragon I. Thermoplastic polyurethane elastomers based on polycarbonate diols with different soft segment molecular weight and chemical structure: Mechanical and thermal properties. POLYM ENG SCI 2008. [DOI: 10.1002/pen.20905] [Citation(s) in RCA: 211] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Eceiza A, Larrañaga M, de la Caba K, Kortaberria G, Marieta C, Corcuera MA, Mondragon I. Structure–property relationships of thermoplastic polyurethane elastomers based on polycarbonate diols. J Appl Polym Sci 2008. [DOI: 10.1002/app.26553] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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