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Li Y, Lu Y, Tian C, Wang Z, Yan J. Intrinsically Microporous Polyimides Derived from 2,2'-Dibromo-4,4',5,5'-bipohenyltetracarboxylic Dianhydride for Gas Separation Membranes. Polymers (Basel) 2024; 16:1198. [PMID: 38732667 PMCID: PMC11085140 DOI: 10.3390/polym16091198] [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: 03/22/2024] [Revised: 04/17/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
This work aims to expand the structure-property relationships of bromo-containing polyimides and the influence of bromine atoms on the gas separation properties of such materials. A series of intrinsically microporous polyimides were synthesized from 2,2'-dibromo-4,4',5,5'-bipohenyltetracarboxylic dianhydride (Br-BPDA) and five bulky diamines, (7,7'-(mesitylmethylene)bis(8-methyldibenzo[b,e][1,4]dioxin-2-amine) (MMBMA), 7,7'-(Mesitylmethylene)bis(1,8-dimethyldibenzo[b,e][1,4] dioxin-2-amine) (MMBDA), 4,10-dimethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine-2,8-diamine (TBDA1), 4,10-dimethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine-3,9-diamine (TBDA2), and (9R,10R)-9,10-dihydro-9,10-[1,2]benzenoanthracene-2,6-diamine (DAT). The Br-BPDA-derived polyimides exhibited excellent solubility, high thermal stability, and good mechanical properties, with their tensile strength and modulus being 59.2-109.3 MPa and 1.8-2.2 GPa, respectively. The fractional free volumes (FFVs) and surface areas (SBET) of the Br-BPDA-derived polyimides were in the range of 0.169-0.216 and 211-342 m2 g-1, following the order of MMBDA > MMBMA > TBDA2 > DAT > TBDA1, wherein the Br-BPDA-MMBDA exhibited the highest SBET and FFV and thus highest CO2 permeability of 724.5 Barrer. Moreover, Br-BPDA-DAT displayed the best gas separation performance, with CO2, H2, O2, N2, and CH4 permeabilities of 349.8, 384.4, 69.8, 16.3, and 19.7 Barrer, and H2/N2 selectivity of 21.4. This can be ascribed to the ultra-micropores (<0.7 nm) caused by the high rigidity of Br-BPDA-DAT. In addition, all the bromo-containing polymers of intrinsic microporosity membranes exhibited excellent resistance to physical ageing.
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Affiliation(s)
- Yongle Li
- Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (Y.L.); (Z.W.); (J.Y.)
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yao Lu
- School of Fine Arts, Zhengzhou University, Zhengzhou 450001, China;
| | - Chun Tian
- Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (Y.L.); (Z.W.); (J.Y.)
| | - Zhen Wang
- Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (Y.L.); (Z.W.); (J.Y.)
| | - Jingling Yan
- Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China; (Y.L.); (Z.W.); (J.Y.)
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Bao F, Lei H, Zou B, Peng W, Qiu L, Ye F, Song Y, Qi F, Qiu X, Huang M. Colorless polyimides derived from rigid trifluoromethyl-substituted triphenylenediamines. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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3
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Kolesnikov TI, Orlova AM, Drozdov FV, Buzin AI, Cherkaev GV, Kechekyan AS, Dmitryakov PV, Belousov SI, Kuznetsov AA. New imide-based thermosets with propargyl ether groups for high temperature composite application. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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4
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Fluorine Substitution Effect on the Material Properties in Transparent Aromatic Polyimides. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2702-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Lu Y, Hu X, Lee WH, Bae JY, Zhao J, Nie W, Wang Z, Yan J, Lee YM. Effects of bulky 2,2′-substituents in dianhydrides on the microstructures and gas transport properties of thermally rearranged polybenzoxazoles. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hong W, Yuan L, Ma Y, Cui C, Zhang H, Yang S, Sun WH. Resin Transfer Moldable Fluorinated Phenylethynyl-Terminated Imide Oligomers with High T g: Structure-Melt Stability Relationship. Polymers (Basel) 2021; 13:polym13060903. [PMID: 33804261 PMCID: PMC7999610 DOI: 10.3390/polym13060903] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 11/16/2022] Open
Abstract
Phenylethynyl-terminated aromatic polyimides meet requirements of resin transfer molding (RTM) and exhibits high glass transition temperature (Tg) were prepared. Moreover, the relationship between the polyimide backbones structure and their melting stability was investigated. The phenylethynyl-terminated polyimides were based on 4,4′-(hexafluorosiopropylidene)-diphthalic anhydride (6FDA) and different diamines of 3,4′-oxydianiline (3,4′-ODA), m-phenylenediamine (m-PDA) and 2,2′-bis(trifluoromethyl)benzidine (TFDB) were prepared. These oligoimides exhibit excellent melting flowability with wide processing temperature window and low minimum melt viscosities (<1 Pa·s). Two of the oligoimides display good melting stability at 280–290 °C, which meet the requirements of resin transfer molding (RTM) process. After thermally cured, all resins show high glass transition temperatures (Tgs, 363–391 °C) and good tensile strength (51–66 MPa). The cure kinetics studied by the differential scanning calorimetry (DSC), 13C nuclear magnetic resonance (13C NMR) characterization and density functional theory (DFT) definitely confirmed that the electron-withdrawing ability of oligoimide backbone can tremendously affect the curing reactivity of terminated phenylethynyl groups. The replacement of 3,4′-ODA units by m-PDA or TFDB units increase the electron-withdrawing ability of the backbone, which increase the curing rate of terminated phenylethynyl groups at processing temperatures, hence results in the worse melting stability.
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Affiliation(s)
- Weijie Hong
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, China; (W.H.); (H.Z.)
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lili Yuan
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, China; (W.H.); (H.Z.)
- Correspondence: (L.Y.); (S.Y.)
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.M.); (W.-H.S.)
| | - Chao Cui
- Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China;
| | - Haoyang Zhang
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, China; (W.H.); (H.Z.)
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shiyong Yang
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, China; (W.H.); (H.Z.)
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (L.Y.); (S.Y.)
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.M.); (W.-H.S.)
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Yang H, Li D, Yang J, Wang J, Gan S, Liu Y, Cao K. Study on the Influence of Different Ether Bonds on PAI Materials Properties. Aust J Chem 2021. [DOI: 10.1071/ch21106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this paper, diamine monomers with ether bonds in the main chain are selected for molecular structure design, and four polyamide-imide (PAI) materials are prepared by the acyl chloride method. A diamine monomer containing an ether group can reduce the friction coefficient and improve the wear performance of PAI material. The wear mechanism of PAI material can also change due to ether linkages. PAI synthesized using m-phenylenediamine without an ether bond has the highest friction coefficient and abrasion loss, and the wear mechanism is mainly adhesive wear. With the increase of the number of ether bonds in the diamine monomer structure, the friction coefficient of the material decreases from 0.5445 to 0.4216 (22.57 %). The abrasion loss of the PAI material synthesized using 4,4′-diaminodiphenyl ether is the smallest, which is 84.4 % lower than m-phenylenediamine. The wear mechanism is abrasive wear and slight adhesion wear. With the increase of the number of ether bonds, the heat r
esistance of PAI decreases slightly, while the hydrophobic property increases and the water absorption decreases. To summarise, PAI material synthesized using 4,4′-diaminodiphenyl ether has a low friction coefficient, the best wear resistance, the highest tensile strength and elongation at break, and the best comprehensive properties of the materials reported here.
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Jiang M, Yuan D, Han E, Zhang M, Jing S, Niu H, Wu D. Structure and properties of BPDA/PDA polyimide fibers. HIGH PERFORM POLYM 2020. [DOI: 10.1177/0954008320980514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Polyimide/graphene (PI/G) composite fibers containing p-phenylenediamine ( p-PDA), 3,3′,4,4′-Biphenyl tetracarboxylic diandhydride (BPDA) and graphene (G) were prepared by wet spinning and thermal imidization. The mechanical properties, thermal stability, orientation factor and morphology of PI/G composite fibers were characterized and studied. Within the scope of the study, the tensile strength and tensile modulus of the fibers increased first and then decreased with the increase of the graphene content. Moreover, the glass transition temperature and thermal decomposition temperature of the PI/G composite fibers increased with the increased of the graphene content. X-ray diffraction (XRD) showed that the degree of orientation of the of prepared fibers increase firstly and then decrease with the content of graphene increasing. SEM indicated that graphene was dispersed evenly in the PI/G composite fibers and graphene had satisfactory compatibility with PI matrix.
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Affiliation(s)
- Ming Jiang
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Dongming Yuan
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Enlin Han
- Jiangsu Shino New Materials & Technology Co., Ltd, Changzhou, China
| | - Mengying Zhang
- Jiangsu Shino New Materials & Technology Co., Ltd, Changzhou, China
| | - Sheng Jing
- Beijing Institute of Spacecraft System Engineering, Beijing, China
| | - Hongqing Niu
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Dezhen Wu
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China
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9
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Song G, Wang X, Chen C. Synthesis and properties of colorless polyamide films with high thermal resistance and dimensional stability. HIGH PERFORM POLYM 2020. [DOI: 10.1177/0954008320915504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Polyamides (PAs) based on terephthaloyl chloride and a series of aromatic diamines were synthesized; PA films were prepared by solution casting without mechanical stretching to produce high-performance films with good optical transparency and dimensional stability. The PA films displayed high heat resistance with glass transition temperatures ( Tg) of 342–399°C. Good mechanical properties were obtained with tensile modulus and strength up to 5.38 GPa and 195.4 MPa, respectively. Coefficient of thermal expansion of the as-cast PA films achieved to an ultralow value of 8.3 ppm °C−1 and could be tailored in a wide range as a function of the macromolecular composition. The series of PA films showed a transparent and colorless feature, with the cutoff wavelength in the range of 355–365 nm. The data were discussed from the perspective of structure–property relationship, may give helpful knowledge for the topic of PA chemistry, and this method could provide an alternative for the production of high-performance colorless polymer films.
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Affiliation(s)
- Guangliang Song
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, People’s Republic of China
| | - Xiaoyu Wang
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, People’s Republic of China
| | - Chao Chen
- Suzhou Polytri Material Technology Co. Ltd, Jiangsu, People’s Republic of China
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Vivod SL, Meador MAB, Pugh C, Wilkosz M, Calomino K, McCorkle L. Toward Improved Optical Transparency of Polyimide Aerogels. ACS APPLIED MATERIALS & INTERFACES 2020; 12:8622-8633. [PMID: 31984724 DOI: 10.1021/acsami.9b17796] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Highly translucent polyimide aerogels were prepared by combining equimolar amounts of pyromellitic dianhydride, 4,4'-hexafluoroisopropylidene di(phthalic anhydride) (6FDA), and 2,2'-dimethylbenzidine and cross-linking with 1,3,5-benzenetricarbonyl trichloride. A multivariable statistical design of experiments was used to perform a comparison study between three variables used to fabricate the aerogels: formulated repeat unit (n) of polyimide oligomers, 6FDA fraction of total dianhydride (0-50 mol %), and total polymer concentration in solution (7-10 wt %). Polymers with 25 mol % 6FDA in the backbone structure were found to produce polyimide aerogels with high optical transmission and low haze. These aerogels also possessed higher surface areas and very narrow nanoscale pore size distribution. Because of the decreased thermal conductivity with increasing amount of 6FDA in the backbone, these aerogels may find use where the combination of high optical transparency and thermal impedance is desired, such as insulated window panes. To this end, future efforts will focus on reducing the yellow color of the polyimide aerogels.
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Affiliation(s)
- Stephanie L Vivod
- NASA Glenn Research Center , 21000 Brookpark Road , Cleveland , Ohio 44135 , United States
| | - Mary Ann B Meador
- NASA Glenn Research Center , 21000 Brookpark Road , Cleveland , Ohio 44135 , United States
| | - Coleen Pugh
- Department of Polymer Science, Maurice Morton Institute of Polymer Science , The University of Akron , Akron , Ohio 44325-3909 , United States
| | - Melissa Wilkosz
- NASA Glenn Research Center , 21000 Brookpark Road , Cleveland , Ohio 44135 , United States
| | - Kerah Calomino
- NASA Glenn Research Center , 21000 Brookpark Road , Cleveland , Ohio 44135 , United States
| | - Linda McCorkle
- Ohio Aerospace Institute , Cleveland , Ohio 44135 , United States
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Synthesis and properties of polyimides derived from 2,2′-dichloro-4,4′,5,5′-biphenyltetracarboxylic dianhydride. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121862] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Tempelman K, Wood JA, Kremer F, Benes NE. Relaxation Dynamics of Thin Matrimid 5218 Films in Organic Solvents. J Phys Chem B 2019; 123:4017-4024. [PMID: 30933502 PMCID: PMC6511941 DOI: 10.1021/acs.jpcb.9b00688] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Polyimides
are interesting polymer materials for organic solvent
nanofiltration (OSN) applications because of their high excess free
volume and high chemical and temperature resistance. However, an open
challenge that remains for glassy polymer materials (i.e., polyimides)
is their tendency to swell in organic solvents which can lead to a
loss of performance. An understanding on how swelling influences the
polymer properties and performance is then of crucial importance for
assessing polyimide suitability in OSN applications. Here, the combination
of in situ spectroscopic ellipsometry (iSE), broadband dielectric
spectroscopy (BDS), and diffuse reflectance Fourier transform infrared
spectroscopy (DRIFT-FTIR) is applied to study the molecular interaction
of two organic penetrants, toluene and n-hexane,
with Matrimid 5218 in detail. iSE shows that slightly cross-linked
Matrimid 5218 swells approximately seven times more in toluene (swelling
degree ≈ 28%) compared to in n-hexane (swelling
degree ≈ 4%). Combined BDS and DRIFT-FTIR results indicate
that toluene interacts with the benzene ring present in the diamine
via π–π interactions, while n-hexane
likely fills up the excess free volume and interacts via local van
der Waals interactions. This work highlights the insights into the
exact nature of the molecular interactions between the penetrant and
polymer that can be gained from a combination of BDS and other techniques
and how these insights can be used to estimate or understand solvent-induced
swelling of polymers used in OSN applications.
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Affiliation(s)
| | | | - Friedrich Kremer
- Faculty of Physics and Geosciences, Institute for Experimental Physics I , University of Leipzig , Linnéstr. 5 , 04103 Leipzig , Germany
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Shin HI, Kwark YJ, Chang JH. Colorless and Transparent Copolyimides and Their Nanocomposites: Thermo-Optical Properties, Morphologies, and Gas Permeabilities. Polymers (Basel) 2019; 11:polym11040585. [PMID: 30960570 PMCID: PMC6523893 DOI: 10.3390/polym11040585] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 03/25/2019] [Accepted: 03/26/2019] [Indexed: 11/26/2022] Open
Abstract
A series of linear aromatic copolyimides (Co-PIs) were synthesized by reacting 4,4′-biphthalic anhydride (BPA) with various molar contents of 2,2′-bis(trifluoromethyl)benzidine (TFB) and p-xylylenediamine (p-XDA) in N,N′-dimethylacetamide (DMAc). Co-PI films were fabricated by solution casting and thermal imidization with poly(amic acid) (PAA) on glass plates. The thermo-optical properties and gas permeabilities of Co-PI films composed of various molar ratios of p-XDA (0.2–1.0 relative to BPA) were investigated. Thermal properties were observed to deteriorate with increasing p-XDA concentration. However, oxygen-transmission rates (O2TRs) and optical transparencies improved with increasing p-XDA concentration. Co-PI hybrids with a 1:0.2:0.8 molar ratio of BPA:TFB:p-XDA and organically modified hectorite (STN) were prepared by the in situ intercalation method. The morphologies and the thermo-optical and gas permeation properties of the hybrids were examined as functions of STN loading (5–50 wt %). XRD and TEM revealed substantial increases in clay particle agglomeration in the Co-PI hybrid films as the clay loading was increased from 5 to 50 wt %. The coefficient of thermal expansion (CTE) and the O2TR of a Co-PI hybrid film were observed to improve with increasing STN concentration; however, its optical transparency decreased gradually with increasing STN concentration.
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Affiliation(s)
- Hyeon Il Shin
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, Korea.
| | - Young-Je Kwark
- Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 06978, Korea.
| | - Jin-Hae Chang
- Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, Korea.
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Kausar A. Interpenetrating polymer network and nanocomposite IPN of polyurethane/epoxy: a review on fundamentals and advancements. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/25740881.2018.1563114] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ayesha Kausar
- School of Natural Sciences, National University of Sciences and Technology (NUST), Islamabad, Pakistan
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16
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Masood MT, Zahid M, Goldoni L, Ceseracciu L, Athanassiou A, Bayer IS. Highly Transparent Polyethylcyanoacrylates from Approved Eco-Friendly Fragrance Materials Demonstrating Excellent Fog-Harvesting and Anti-Wear Properties. ACS APPLIED MATERIALS & INTERFACES 2018; 10:34573-34584. [PMID: 30199218 DOI: 10.1021/acsami.8b10717] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Superglue monomers belong to a family of cyanoacrylates that are known for their very rapid polymerization upon contact with moist surfaces. Their biodegradation and low toxicity make them attractive as medical and veterinary adhesives. Although the fast-acting polymerization characteristics have been successfully utilized to design nanoscale polymeric particles that can carry drugs or other inorganic nanoparticles, it constitutes a significant drawback if one desires to produce other forms of functional biodegradable acrylics, such as coatings, sheets, or nanocomposites. This is because rapid polymerization in air creates highly porous and brittle structures. Here, we address this drawback by reporting a simple and inexpensive method of fabricating highly transparent (>92%) polyethylcyanoacrylate (PECA) coatings by dispersing the monomer in a fragrance-classified green liquid, cyclopentanone. The resulting transparent coatings were hydrophilic but with slippery wetting characteristics, suitable as efficient fog-harvesting templates. Furthermore, another fragrance liquid, benzyl alcohol, is introduced as a plasticizer and co-solvent to overcome its brittleness while retaining its transparency. The same plasticized monomer solutions, dispersing low concentrations of graphene (<0.5 wt %), were allowed to self-assemble on stainless steel surfaces, forming low-friction and anti-wear dry lubricants by decreasing the steel friction coefficient and wear rate by 6- and 10-fold, respectively.
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Affiliation(s)
- Muhammad Tamoor Masood
- Dipartimento di Informatica, Bioingegneria, Robotica e Ingegneria dei Sistemi (DIBRIS) , Università degli studi di Genova , Via Opera Pia 13 , 16145 Genoa , Italy
| | - Muhammad Zahid
- Dipartimento di Informatica, Bioingegneria, Robotica e Ingegneria dei Sistemi (DIBRIS) , Università degli studi di Genova , Via Opera Pia 13 , 16145 Genoa , Italy
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Zhao J, Hu QS, Zhou YX, Peng L, Shen YZ. Preparation and properties of highly organosoluble polyimides derived from 2,2′-disubstituted-4,4′-oxydianilines. HIGH PERFORM POLYM 2018. [DOI: 10.1177/0954008317701550] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Four novel aromatic, symmetrical ether diamines (2,2′-bis(biphenyl)-4,4′-oxydianiline, 2,2′-bis[4′-(3″,4″,5″-trifluorophenyl)phenyl]-4,4′-oxydianiline, 2,2′-bis[4-(naphthalene-1-yl)phenyl]-4,4′-oxydianiline, and 2,2′-bis[4″-(diphenylamino)phenyl]-4,4′-oxydianiline), were successfully synthesized through four steps using p-chloronitrobenzene as a starting material. Highly organosoluble polyimides were obtained by the reaction of these diamines with 2′2 ′-bis[4′-(3″,4″,5″-trifluorophenyl)phenyl]-4,4′,5,5′-biphenyltetracarboxylic dianhydride via a conventional two-step chemical imidization method. All the polyimides were thoroughly characterized by Fourier transform infrared, ultraviolet, fluorescence, gel permeation chromatography, and thermogravimetric analysis. The effect of the fluorine atoms directly linked to the lateral phenyl rings showed excellent dissolution and strong fluorescence. The polyimides exhibited excellent thermal stability, with decomposition temperatures (at 10% weight loss) above 530°C and glass transition temperatures in the range of 258–320°C. These outstanding combined features ensured that these polyimides could be used as memory materials for advanced microelectronic applications.
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Affiliation(s)
- Jing Zhao
- Department of Applied Chemistry, School of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, P.R. China
| | - Qing-Song Hu
- Department of Applied Chemistry, School of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, P.R. China
| | - Yan-Xu Zhou
- Department of Applied Chemistry, School of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, P.R. China
| | - Ling Peng
- Department of Applied Chemistry, School of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, P.R. China
| | - Ying-Zhong Shen
- Department of Applied Chemistry, School of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, P.R. China
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Molecular Design of Soluble Biopolyimide with High Rigidity. Polymers (Basel) 2018; 10:polym10040368. [PMID: 30966403 PMCID: PMC6414993 DOI: 10.3390/polym10040368] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/18/2018] [Accepted: 03/24/2018] [Indexed: 11/16/2022] Open
Abstract
New soluble biopolyimides were prepared from a diamine derived from an exotic amino acid (4-aminocinnamic acid) with several kinds of tetracarboxylic dianhydride. The biopolyimide molecular structural flexibility was tailored by modifying the tetracarboxylic dianhydride moiety. The obtained polyimides were soluble in various solvents such as N-methyl-2-pyrrolidone, N,N-dimethylacetamide, N,N-dimethylformamide, dimethyl sulfoxide, and even tetrahydrofuran. It was observed that the biopolyimide solubility was greatly dependent upon the structural flexibility (torsion energy). Flexible structure facilitated greater solubility. The synthesized biopolyimides were largely amorphous and had number-average molecular weight (Mn) in the range (5–8) × 105. The glass transition temperatures (Tg) of the polymers ranged from 259–294 °C. These polymers exhibited good thermal stability without significant weight loss up to 410 °C. The temperatures at 10% weight loss (Td10) for synthesized biopolyimide ranged from 375–397 °C.
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Susa A, Bijleveld J, Hernandez Santana M, Garcia SJ. Understanding the Effect of the Dianhydride Structure on the Properties of Semiaromatic Polyimides Containing a Biobased Fatty Diamine. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2018; 6:668-678. [PMID: 29333351 PMCID: PMC5762164 DOI: 10.1021/acssuschemeng.7b03026] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/13/2017] [Indexed: 05/15/2023]
Abstract
In this work we report the effect of the hard block dianhydride structure on the overall properties of partially biobased semiaromatic polyimides. For the study, four polyimides were synthesized using aliphatic fatty dimer diamine (DD1) as the soft block and four different commercially available aromatic dianhydrides as the hard block: 4,4'-(4,4'-isopropylidenediphenoxy) bis(phthalic anhydride) (BPADA), 4,4'-oxidiphthalic anhydride (ODPA), 4,4'-(Hexafluoroisopropylidene) diphthalic anhydride (6FDA), and 3,3',4,4'-biphenyltetracarboxylic dianhydride (BPDA). The polymers synthesized were fully organo-soluble thermoplastic branched polyimides with glass transition temperatures close to room temperature. The detailed analysis took into account several aspects of the dianhydrides structure (planarity, rigidity, bridging group between the phtalimides, and electronic properties) and related them to the results obtained by differential scanning calorimetry, rheology, fluorescence and broadband dielectric spectroscopy. Moreover, the effects of physical parameters (crystallization and electronic interactions) on the relaxation behavior are discussed. Despite the presence of the bulky branched soft block given by the dimer diamine, all polyimides showed intermolecular charge transfer complexes, whose extent depends on the electronic properties of the dianhydride hard block. Furthermore, the results showed that polyimides containing flexible and bulky hard blocks turned out fully amorphous while the more rigid dianhydride (BPDA) led to a nanophase separated morphology with low degree of crystallinity resulting in constrained segmental relaxation with high effect on its mechanical response with the annealing time. This work represents the first detailed report on the development and characterization of polyimides based on a biobased fatty dimer diamine. The results highlight the potential of polymer property design by controlled engineering of the aromatic dianhydride blocks.
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20
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Meis D, Tena A, Neumann S, Georgopanos P, Emmler T, Shishatskiy S, Rangou S, Filiz V, Abetz V. Thermal rearrangement of ortho-allyloxypolyimide membranes and the effect of the degree of functionalization. Polym Chem 2018. [DOI: 10.1039/c8py00530c] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aromatic polyimides containing different ratios of ortho-hydroxy to ortho-allyloxy units were prepared and thermally rearranged.
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Affiliation(s)
- David Meis
- Helmholtz-Zentrum Geesthacht
- Institute of Polymer Research
- 21502 Geesthacht
- Germany
| | - Alberto Tena
- Helmholtz-Zentrum Geesthacht
- Institute of Polymer Research
- 21502 Geesthacht
- Germany
| | - Silvio Neumann
- Helmholtz-Zentrum Geesthacht
- Institute of Polymer Research
- 21502 Geesthacht
- Germany
| | | | - Thomas Emmler
- Helmholtz-Zentrum Geesthacht
- Institute of Polymer Research
- 21502 Geesthacht
- Germany
| | - Sergey Shishatskiy
- Helmholtz-Zentrum Geesthacht
- Institute of Polymer Research
- 21502 Geesthacht
- Germany
| | - Sofia Rangou
- Helmholtz-Zentrum Geesthacht
- Institute of Polymer Research
- 21502 Geesthacht
- Germany
| | - Volkan Filiz
- Helmholtz-Zentrum Geesthacht
- Institute of Polymer Research
- 21502 Geesthacht
- Germany
| | - Volker Abetz
- Helmholtz-Zentrum Geesthacht
- Institute of Polymer Research
- 21502 Geesthacht
- Germany
- University of Hamburg
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21
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Tan W, Li Z, Dong J, Wang Q, Cheng Y, Zhao X, Zhang Q. Preparation of organo-soluble co-polyimides using N
-methyl-2-pyrrolidone as the solvent via one-pot high-temperature polymerization. J Appl Polym Sci 2017. [DOI: 10.1002/app.45497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wenjun Tan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Zhentao Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Jie Dong
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Qianqian Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Yang Cheng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Xin Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Qinghua Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
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Amanpour J, Sharifi-Sanjani N. Mechanical and Thermal Properties of Poly(Tetrahydrofurfuryl Methacrylate) Nano-Composites. J MACROMOL SCI B 2017. [DOI: 10.1080/00222348.2017.1384233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J. Amanpour
- Polymer Laboratory, School of Chemistry, College of Science, University of Tehran, Tehran, I. R. Iran
| | - N. Sharifi-Sanjani
- Polymer Laboratory, School of Chemistry, College of Science, University of Tehran, Tehran, I. R. Iran
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23
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Mechanical and UV absorption behavior of zinc oxide nanoparticles: reinforced poly(vinyl alcohol-g-acrylonitrile) nanocomposite films. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-1942-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Yi L, Huang W, Yan D. Polyimides with side groups: Synthesis and effects of side groups on their properties. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28409] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lang Yi
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 People's Republic of China
| | - Wei Huang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 People's Republic of China
| | - Deyue Yan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University, 800 Dongchuan Road; Shanghai 200240 People's Republic of China
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25
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Hsiao SH, Leu WT. Synthesis and Properties of Novel Aromatic Poly(esterimide)s Bearing Naphthalene-2,7-Diyl Units. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008304040098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Two series of 2,7-naphthalenediyl units-containing homoand copoly(ester imide)s were prepared from 2,7-bis(4-aminobenzoyloxy)naphthalene and 2,7-bis(3-aminobenzoyloxy)naphthalene, respectively, with six commercially available aromatic tetracarboxylic dianhydrides and their mixtures via a conventional two-stage synthesis that included ring-opening polyaddition to give poly(amic acid)s followed by chemical imidization to polyimides. The intermediate poly(amic acid)s obtained in the first stage had inherent viscosities of 0.59∼1.15 and 0.51∼1.20 dL g-1, respectively. Some of the poly(ester imide)s derived from less rigid dianhydrides had excellent solubility in polar aprotic solvents such as N-methyl-2-pyrrolidone and N,N-dimethylacetamide and could be solution-cast into transparent, flexible, and tough films. The poly(ester imide)s derived from rigid dianhydrides such as pyromellitic dianhydride (PMDA) and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA) were semicrystalline and showed less solubility. Except for some examples, most of the poly(ester imide)s displayed discernible glass-transition temperatures ( Tgs) between 233 and 295°C in the differential scanning calorimetry traces. These poly(ester imide)s showed insignificant decomposition below 450°C in nitrogen or air. The investigation of the thermal decomposition of the poly(ester imide)s using pyrolysis-gas chromatography/mass spectrometry (pyrolysis-GC/MS) indicated that a dramatic breakage of the ester linkages occurred at around 450°C, which initiated the polymer chain scission.
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Affiliation(s)
- Sheng-Huei Hsiao
- Department of Chemical Engineering, Tatung University, 40 Chungshan North Road, 3rd Section, Taipei 104, Taiwan, Republic of China
| | - Wen-Tsuen Leu
- Department of Chemical Engineering, Tatung University, 40 Chungshan North Road, 3rd Section, Taipei 104, Taiwan, Republic of China
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26
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27
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Balasubramanian R, Kumutha K, Sarojadevi M. Mechanical, thermal and electrical properties of polyimides containing 1, 2, 3-triazole ring prepared by click reaction. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1488-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Constantin CP, Damaceanu MD, Varganici C, Wolinska-Grabczyk A, Bruma M. Dielectric and gas transport properties of highly fluorinated polyimides blends. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008315584181] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The physicochemical properties of highly fluorinated polyimide blends were studied in order to highlight the advantages of employing a high content of fluorine atoms to tailor the properties of polyimide materials. Thus, dynamo-mechanical analysis was used to evidence the physical phenomena taking place during heating. The trend of storage modulus, loss modulus and loss factor tangent with temperature during and after the α relaxation was explored. The dielectric spectroscopy was carried out to investigate the dielectric behaviour at different temperatures and frequencies and to evaluate the values of dielectric constant, dielectric loss and electrical resistance. The dielectric spectroscopy data were corroborated with the dynamo-mechanical analysis to highlight the sub-glass transitions encountered in these blend films. Dielectric loss diagrams showed sub-glass transitions in the form of γ and β relaxations mainly due to the segmental mobility of the polymer chain components. The gas separation performance of some of the investigated blends was assesed, and their ability to achieve simultaneously higher gas permeability and higher selectivity was demonstrated.
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Affiliation(s)
| | | | | | | | - Maria Bruma
- “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
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29
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Novel dye-containing copolyimides: synthesis, characterization and effect of chain entanglements on developed electrospun nanofiber morphologies. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0713-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Ghorpade RV, Thorave AK, Rajan CR, Chavan NN, Ponrathnam S. Synthesis and characterization of thermally stable polyimides with a pendent phenothiazine unit based on new diamine 10-(3,5-diaminobenzoyl)phenothiazine. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008314568877] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A novel diamine 10-(3,5-diaminobenzoyl)phenothiazine (DBPT) with a side chain containing phenothiazine unit was synthesized. A new family of polyimides (PIs) containing phenothiazine unit in the side chains has been successfully synthesized by direct polycondensation of DBPT with pyromellitic dianhydride, 3,3′,4,4′-benzophenone tertacarboxylic dianhydride, and 4,4′-oxydiphthalic anhydride (ODA) via a conventional two-step chemical imidization process. The yield of polymers was good enough, which were soluble in most organic solvents. The molecular orbital energy gaps, thermal stability, and crystallinity of PIs were investigated by molecular modeling, thermogravimetric analysis, and wide-angle X-ray scattering, respectively. Thermal properties of polymers were good enough to permit the use of these PIs in various applications; only 49% weight loss is detected at 900°C in nitrogen atmosphere. X-Ray diffraction clearly reveals the amorphous nature of PIs. A quantum modeling study (density functional theory) has shown the influence of dianhydride structure on the energy difference of highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels.
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Affiliation(s)
- Ravindra V. Ghorpade
- Polymer Science and Engineering Division, Council of Scientific & Industrial Research (CSIR)-National Chemical Laboratory, Pune, Maharashtra, India
| | - Asmita K. Thorave
- Polymer Science and Engineering Division, Council of Scientific & Industrial Research (CSIR)-National Chemical Laboratory, Pune, Maharashtra, India
| | - C. R. Rajan
- Polymer Science and Engineering Division, Council of Scientific & Industrial Research (CSIR)-National Chemical Laboratory, Pune, Maharashtra, India
| | - Nayaku N. Chavan
- Polymer Science and Engineering Division, Council of Scientific & Industrial Research (CSIR)-National Chemical Laboratory, Pune, Maharashtra, India
| | - S. Ponrathnam
- Polymer Science and Engineering Division, Council of Scientific & Industrial Research (CSIR)-National Chemical Laboratory, Pune, Maharashtra, India
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31
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Sava I, Burescu A, Stoica I, Musteata V, Cristea M, Mihaila I, Pohoata V, Topala I. Properties of some azo-copolyimide thin films used in the formation of photoinduced surface relief gratings. RSC Adv 2015. [DOI: 10.1039/c4ra14218g] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The patterning of the free standing azo-copolyimide films under different irradiation conditions led to the uniform surface relief gratings.
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Affiliation(s)
- Ion Sava
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi 700553
- Romania
| | - Ada Burescu
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi 700553
- Romania
| | - Iuliana Stoica
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi 700553
- Romania
- University POLITEHNICA of Bucharest
- Bucharest 011061
| | | | - Mariana Cristea
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi 700553
- Romania
| | - Ilarion Mihaila
- “Alexandru Ioan Cuza” University of Iasi
- Faculty of Physics
- Plasma Advanced Research Center (IPARC)
- Iasi
- Romania
| | - Valentin Pohoata
- “Alexandru Ioan Cuza” University of Iasi
- Faculty of Physics
- Plasma Advanced Research Center (IPARC)
- Iasi
- Romania
| | - Ionut Topala
- “Alexandru Ioan Cuza” University of Iasi
- Faculty of Physics
- Plasma Advanced Research Center (IPARC)
- Iasi
- Romania
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32
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Qiu X, Wang H, Zhou C, Li D, Liu Y, Yan C. Polyimide/kaolinite composite films: Synthesis and characterization of mechanical, thermal and waterproof properties. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.01.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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34
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Han T, Zhang Y, Cao Q, Liu S, Chi Z, Xu J. Synthesis and characterization of novel optically active poly(ester-imide)s with high T
g
and good thermal stability. POLYM ADVAN TECHNOL 2013. [DOI: 10.1002/pat.3146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tao Han
- Key Laboratory for Polymeric Composite and Functional Materials of the Ministry of Education, DSAPM Lab, Materials Science Institute, School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou China
| | - Yi Zhang
- Key Laboratory for Polymeric Composite and Functional Materials of the Ministry of Education, DSAPM Lab, Materials Science Institute, School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou China
| | - Qiaoying Cao
- Key Laboratory for Polymeric Composite and Functional Materials of the Ministry of Education, DSAPM Lab, Materials Science Institute, School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou China
| | - Siwei Liu
- Key Laboratory for Polymeric Composite and Functional Materials of the Ministry of Education, DSAPM Lab, Materials Science Institute, School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou China
| | - Zhenguo Chi
- Key Laboratory for Polymeric Composite and Functional Materials of the Ministry of Education, DSAPM Lab, Materials Science Institute, School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou China
| | - Jiarui Xu
- Key Laboratory for Polymeric Composite and Functional Materials of the Ministry of Education, DSAPM Lab, Materials Science Institute, School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou China
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Carretti E, Chelazzi D, Rocchigiani G, Baglioni P, Poggi G, Dei L. Interactions between nanostructured calcium hydroxide and acrylate copolymers: implications in cultural heritage conservation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:9881-9890. [PMID: 23889558 DOI: 10.1021/la401883g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The interactions between an acrylic copolymer, poly ethylmethacrylate/methylacrylate (70:30) (Poly(EMA/MA), and Ca(OH)2 nanoparticles were investigated in order to establish the reciprocal influence of these two compounds on their peculiar properties. The carbonation kinetics of Ca(OH)2 nanoparticles by atmospheric CO2 was investigated by FTIR and SEM measurements and compared to that of a nanocomposite film. CaCO3 formation occurred even in the presence of the copolymer, but only after an induction period of ca. 200 h and with a lower reaction rate. Some implications in cultural heritage conservation dealing with application of nanolime on artifacts previously treated with acrylic copolymers were discussed. Contact angle measurements, mechanical cohesion properties, and water vapor permeability allowed us to conclude that the optimum behavior of nanolime with respect to transpiration was not compromised by the presence of the copolymer, and the behavior in terms of mechanical properties recovery by the application of Ca(OH)2 nanoparticles remained excellent even in the presence of poly(EMA/MA).
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Affiliation(s)
- Emiliano Carretti
- Department of Chemistry Ugo Schiff and CSGI Consortium, University of Florence, via della Lastruccia 3, I-50019 Sesto Fiorentino (Florence), Italy
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Xia S, Yi L, Sun Z, Wang Y. The effect of phthalimide side chains on the thermal stability and rubbing resistance of polyimide used as a liquid crystal vertical alignment layer. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0219-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Chen JC, Wu JA, Chang HW, Lee CY. Organosoluble polyimides derived from asymmetric 2-substituted-and 2,2′,6-trisubstituted-4,4′-oxydianilines. POLYM INT 2013. [DOI: 10.1002/pi.4571] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jyh-Chien Chen
- Department of Materials Science and Engineering; National Taiwan University of Science and Technology; No. 43 Sec. 4 Keelung Road Taipei 10607 Taiwan
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38
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High-performance copolyimide fibers containing quinazolinone moiety: Preparation, structure and properties. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.01.047] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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39
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Effect of the chemical structure of aromatic-cycloaliphatic copolyimide films on their surface morphology, relaxation behavior and dielectric properties. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0111-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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Synthesis and characterization of processable aromatic polyimides and their initial evaluation as promising biomaterials. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-2892-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Xia S, Sun Z, Yi L, Wang Y. Synthesis of soluble polyimide derived from novel naphthalene diamines for liquid crystal alignment layers and a preliminary study on the mechanism of imidization. RSC Adv 2013. [DOI: 10.1039/c3ra42098a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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42
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43
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Comer AC, Ribeiro CP, Freeman BD, Kalakkunnath S, Kalika DS. Dynamic relaxation characteristics of thermally rearranged aromatic polyimides. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.12.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Synthesis of Poly(cyclohexene oxide)-Montmorillonite Nanocomposite viaIn SituPhotoinitiated Cationic Polymerization with Bifunctional Clay. J CHEM-NY 2013. [DOI: 10.1155/2013/617498] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Poly(cyclohexene oxide) (PCHO)/clay nanocomposites were prepared by means ofin situ photoinitiated cationic polymerizationwith initiator moieties immobilized within the silicate galleries of the clay particles. Diphenyliodonium molecules were intercalated via cation exchange process between Cloisite Ca and diphenyliodonium. The polymerization of CHO through the interlayer galleries of the clay can provide a homogenous distribution of the clay layers in the polymer matrix in nanosize and results in the formation of PCHO/clay nanocomposites. The rates of clay loadings were changed to 1%, 3%, and 5% so as to investigate the effect of clay and initiator amount on polymer. X-ray diffraction (XRD) spectroscopy, thermogravimetric analysis (TGA), and transmission electron microscopy (TEM) methods were used for the characterization of modified clay and nanocomposite materials. Thermal stability of PCHO/MMT nanocomposites was also studied by both differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).
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Fang C, Zhou Y, He M, Bu X, Yin K, Weng J, Zhang Z. Synthesis and characterization of ternary-copolymer of soluble fluorinated polyimides based on 1,4-bis (4-amino-2-trifluoromethylphenoxy) benzene. J Appl Polym Sci 2012. [DOI: 10.1002/app.37740] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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46
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Zeng K, Zhou S, Fan H, Yang G. Synthesis and Characterization of Highly Organosoluble Polyimides Based on a New Asymmetric Dianhydride. Des Monomers Polym 2012. [DOI: 10.1163/156855511x606146] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Ke Zeng
- a The Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Shaohong Zhou
- b State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Haojun Fan
- c The Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Gang Yang
- d State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, P. R. China;,
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47
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Chang HC, Chang SL, Lin CH, Chen SW. Design and synthesis of unsymmetric phosphinated diamines for high-Tg, transparent polyimides. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.02.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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48
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Studies on organosoluble polyimides based on a series of new asymmetric and symmetric dianhydrides: Structure/solubility and thermal property relationships. Macromol Res 2011. [DOI: 10.1007/s13233-012-0007-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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González Henríquez CM, Tagle LH, Terraza CA, Barriga González A, Volkmann UG, Cabrera AL, Ramos-Moore E, Pavez-Moreno M. Structural symmetry breaking of silicon-containing poly(amide-imide) oligomers and its relation to electrical conductivity and Raman-active vibrations. POLYM INT 2011. [DOI: 10.1002/pi.3169] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Bacosca I, Hamciuc E, Bruma M, Ignat M. Poly(amide imide)s containing functional nitrile groups for high performance materials. REACT FUNCT POLYM 2011. [DOI: 10.1016/j.reactfunctpolym.2011.05.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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