Physico-chemical properties of new composite polymer for heat resistance with thin-film form through the blending of m-aramid and polyurethane (PU)

Ahn, Dajeong; Lee, Jaewoong; Jung, Seungho

doi:10.1016/j.polymer.2018.01.037

Cited by 12 publications

(8 citation statements)

References 31 publications

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“…For PU, there is a peak at 1727.4 cm −1 , corresponding to the asymmetric vibration of O−C−O, and a peak at 3338.6 cm −1 , corresponding to the N−H stretching. 43,44 After crosslinking, they are offset to 1705.0 and 3367.7 cm −1 , respectively, resulting from the rich hydrogen bonds. 45,46 Moreover, to further study the hydrogen bonds formed between PU and TA, O 1s X-ray photoelectron spectroscopy was obtained.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Constructing a Strong-Affinity Elastic Network Binder Enabled by Tannic Acid as the Bifunctional Anchoring Agent for High-Performance Li–S Battery

Hou

Feng

Wang

et al. 2022

ACS Appl. Energy Mater.

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Lithium–sulfur (Li–S) batteries have been limited by their poor electrochemical performance due to the large volume change and severe shuttle effect during cycling. Binders serve as an essential role in sulfur electrodes and can stabilize the mechanical integrity of the electrode. It also has been demonstrated that designing strong-affinity binders is a feasible and facile method to suppress the shuttle effect. Therefore, in this work a strong-affinity elastic network binder is designed for high-performance Li–S battery coupling with tannic acid (TA) and polyurethane (PU). Firstly, the rich hydrogen bonds between TA and PU result in a mechanically robust network to keep the sulfur electrode from cracking in the cycling process. Secondly, the selected TA with abundant phenolic hydroxyl groups possesses strong adsorption capability toward polysulfides, which can efficiently restrain the shuttle effect. Hence, the cycling stability of Li–S batteries using P1T1 binder is significantly improved, maintaining the capacity of 602.5 mAh g–1 after 500 cycles at the current density of 0.5 C.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Constructing a Strong-Affinity Elastic Network Binder Enabled by Tannic Acid as the Bifunctional Anchoring Agent for High-Performance Li–S Battery

Hou

Feng

Wang

et al. 2022

ACS Appl. Energy Mater.

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“…The molecular structures of MAF, DCCNa, and MAFC were characterized by FTIR analysis. As shown in Figure 2, the characteristic absorption peaks of the MAF at 3415 cm -1 and 3060 cm -1 have corresponded to the N–H and aromatic C–H stretching vibrations, respectively, the vibration peaks of 1660 cm −1 , 1608 cm −1 , and 1540 cm −1 were attributed to C=O stretching vibrations, aromatic C=C stretching vibrations, and N–H deformation vibrations in MAF, respectively [11,24]. The characteristic peaks of DCCNa at 1742 cm −1 , 1355 cm −1 , and 700 cm −1 were assigned to C=O, C–N and N–Cl stretching vibrations, respectively.…”

Section: Resultsmentioning

confidence: 99%

Chlorination Treatment of Meta-Aramid Fibrids and Its Effects on Mechanical Properties of Polytetramethylene Ether Glycol/Toluene Diisocyanate (PTMEG/TDI)-Based Polyurethane Composites

et al. 2019

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Meta-aramid fibrids (MAF) have attracted much attention. However, it is difficult for this high mechanical performance fiber to form sufficient interface adhesion between the MAF and polyurethane (PU) matrix due to the chemical inertness of its surface. Thus, the surface activity of MAF should be improved to obtain a high-performance MAF/PU composite. A novel methodology to modify the surface of MAF with a sodium dichloroisocyanurate solution (DCCNa) was developed to obtain chlorinated MAF (MAFC) in this study. A series of MAFC/PU composites was prepared by in situ polymerization processes. The results of Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) demonstrated that the chlorine-contained chemical groups were introduced onto the MAF surfaces after chlorination. Dynamic contact angle analysis (DCAA) revealed that the surface wettability and the surface free energy of the MAFC were significantly improved, which allowed for strong chemical bonding to PU. Scanning electron microscopy (SEM) showed a uniform distribution of MAFC and good interfacing bonding between the MAFC and PU. With the incorporation of 1.5 wt% MAFC into the polyurethane matrix, the tensile and tear strength values of MAFC/PU were 36.4 MPa and 80.1 kN·m−1 respectively, corresponding to improvements of approximately 43.3% and 21.1%, as compared to those of virgin PU as 25.4 MPa and 66.1 kN·m−1, respectively.

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“…The properties of polymer blends usually depend on the miscibility and morphology components. [1][2][3][4][5] Thermoplastic polyurethanes (PUs) are widely used polymers in coatings, adhesives, and biomedical applications with excellent mechanical and biocompatibility properties. The PUs consisting of linear copolymers combine a hard segment with a soft segment.…”

Section: Introductionmentioning

confidence: 99%

Rheological, mechanical, thermal and barrier properties of highly elastic polyurethane/zinc ionomer composite films

Rukmanikrishnan

Chae

Lee

2020

Journal of Thermoplastic Composite Materials

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Polyurethane (PU) and zinc ionomer (ZnI)-based polymer composites films were developed by melt extrusion method. The structure, phase morphology, rheology, and mechanical properties of the PU/ZnI blends were studied. The X-ray diffraction analysis displaced that there is no major effect on the crystallinity of PU phase by the addition of ZnI. Scanning electron microscopic images confirmed the partial miscibility of PU and ZnI, which greatly influenced on the tensile and elongation at break (EB) properties of the composite films at a high ratio. Dynamic mechanical analysis indicated that with increasing the ZnI content, the storage modulus of the blends decreased and exhibited two T g temperature peaks. Tensile strength of the PU/ZnI composites decreased drastically and EB increased significantly by the addition of ZnI, however a degree of interaction has been found. PU/ZnI composite films improved surface hydrophobic with excellent water barrier properties. The ultraviolet transmittance of the PU increased with increasing the content of ZnI.

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Physico-chemical properties of new composite polymer for heat resistance with thin-film form through the blending of m-aramid and polyurethane (PU)

Cited by 12 publications

References 31 publications

Constructing a Strong-Affinity Elastic Network Binder Enabled by Tannic Acid as the Bifunctional Anchoring Agent for High-Performance Li–S Battery

Constructing a Strong-Affinity Elastic Network Binder Enabled by Tannic Acid as the Bifunctional Anchoring Agent for High-Performance Li–S Battery

Chlorination Treatment of Meta-Aramid Fibrids and Its Effects on Mechanical Properties of Polytetramethylene Ether Glycol/Toluene Diisocyanate (PTMEG/TDI)-Based Polyurethane Composites

Rheological, mechanical, thermal and barrier properties of highly elastic polyurethane/zinc ionomer composite films

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