Waterborne polyurethane single-ion electrolyte from aliphatic diisocyanate and various molecular length of polyethylene glycol

Ch, Yang; Lin, W-C.; Liu, F-J.

doi:10.3144/expresspolymlett.2007.23

Cited by 13 publications

(7 citation statements)

References 17 publications

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“…Interaction of cation with the lone pair of electrons on the N atom leads to weakening of the N-H bond length. It is also could be due to interaction of the cations to the nonbonded electrons of the carbonyl oxygen atoms that leads to reducing the H-bond strength [31,32]. From these FTIR results, it can be deduced that the interactions between host polymer and salts occurred both in the hard segment (C=O and N-H) and soft segment (C-O-C) of PU.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 81%

Characterization of Novel Castor Oil-Based Polyurethane Polymer Electrolytes

2015

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Abstract:Castor oil-based polyurethane as a renewable resource polymer has been synthesized for application as a host in polymer electrolyte for electrochemical devices. The polyurethane was added with LiI and NaI in different wt% to form a film of polymer electrolytes. The films were characterized by using attenuated total reflectance-Fourier transform infrared spectroscopy, dynamic mechanical analysis, electrochemical impedance spectroscopy, linear sweep voltammetry and transference number measurement. The highest conductivity of 1.42 × 10 upon addition of 30 wt% NaI at room temperature. The temperature dependence conductivity plot indicated that both systems obeyed Arrhenius law. The activation energy for the PU-LiI and PU-NaI systems were 0.13 and 0.22 eV. Glass transition temperature of the synthesized polyurethane decreased from −15.8 °C to ~ −26 to −28 °C upon salts addition. These characterizations exhibited the castor oil-based polyurethane polymer electrolytes have potential to be used as alternative membrane for electrochemical devices.

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Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 81%

Characterization of Novel Castor Oil-Based Polyurethane Polymer Electrolytes

2015

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“…PCL, PVL, and PEG (MW = 1000, 2000) showed T g values lower than −60 °C. 17,40 The low T g values of the polyurethanes (below −55 °C) were mainly dependent on the composition of their soft segments. The T g values of the polyurethanes decreased with increasing PEG contents in soft segments, which was attributed to the lower T g of PEG (−79 and −76 °C for PEG1000 and PEG2000, respectively) than PCL (−63 °C) and PVL (−72 °C).…”

Section: ■ Discussionmentioning

confidence: 99%

“…The T g values of the polyurethanes decreased with increasing PEG contents in soft segments, which was attributed to the lower T g of PEG (−79 and −76 °C for PEG1000 and PEG2000, respectively) than PCL (−63 °C) and PVL (−72 °C). 17,40 The low T m values of the polyurethanes (−7 to 9 °C) were mainly attributed to the soft segment crystallinity. The random polymerization of VL and CL increased the irregular arrangement of polymer chains and subsequently reduced the polymer crystallization.…”

Section: ■ Discussionmentioning

confidence: 99%

Low-Initial-Modulus Biodegradable Polyurethane Elastomers for Soft Tissue Regeneration

Huang

Tang

et al. 2017

ACS Appl. Mater. Interfaces

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The mechanical match between synthetic scaffold and host tissue remains challenging in tissue regeneration. The elastic soft tissues exhibit low initial moduli with a J-shaped tensile curve. Suitable synthetic polymer scaffolds require low initial modulus and elasticity. To achieve these requirements, random copolymers poly(δ-valerolactone-co-ε-caprolactone) (PVCL) and hydrophilic poly(ethylene glycol) (PEG) were combined into a triblock copolymer, PVCL-PEG-PVCL, which was used as a soft segment to synthesize a family of biodegradable elastomeric polyurethanes (PU) with low initial moduli. The triblock copolymers were varied in chemical components, molecular weights, and hydrophilicities. The mechanical properties of polyurethanes in dry and wet states can be tuned by altering the molecular weights and hydrophilicities of the soft segments. Increasing the length of either PVCL or PEG in the soft segments reduced initial moduli of the polyurethane films and scaffolds in dry and wet states. The polymer films are found to have good cell compatibility and to support fibroblast growth in vitro. Selected polyurethanes were processed into porous scaffolds by a thermally induced phase-separation technique. The scaffold from PU-PEG-PVCL had an initial modulus of 0.60 ± 0.14 MPa, which is comparable with the initial modulus of human myocardium (0.02-0.50 MPa). In vivo mouse subcutaneous implantation of the porous scaffolds showed minimal chronic inflammatory response and intensive cell infiltration, which indicated good tissue compatibility of the scaffolds. Biodegradable polyurethane elastomers with low initial modulus and good biocompatibility and processability would be an attractive alternative scaffold material for soft tissue regeneration, especially for heart muscle.

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“…These PU‐based polymer electrolytes are generally composed of multiple components, including a soft segment such as oligomeric polyols [e.g., poly(ethylene glycol) (PEG)], a hard segment of diisocyanate, and a chain extender such as dimethylol propionic acid (DMPA) . The soft segment allows for the solvation of many inorganic salts, and its segmental motion provides pathways for ion conduction, and the hard segment serves as a site for crosslinking and supports the mechanical stability . Various PU‐based polymer electrolytes have been developed, and the dependency of their physical properties on different factors, including the morphology of the polymer, the soft‐segment ratio, the compositional ratio of DMPA, the types and concentrations of salts, and crosslinking, has been studied.…”

Section: Introductionmentioning

confidence: 99%

Poly(urethane acrylate)‐based gel polymer films for mechanically stable, transparent, and highly conductive polymer electrolyte applications

Lee

Park

Lee

et al. 2017

J of Applied Polymer Sci

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Polymer electrolytes are attractive for the applications in conventional electrochemical devices and emerging flexible devices. In this study, we developed a poly(urethane acrylate)‐based gel polymer electrolyte with excellent mechanical stability, optical transparency, and a high ionic conductivity. These polymer electrolytes showed excellent dimensional stability and an elastomer‐like behavior with a Shore A hardness in the range of 20–40. The optical transmittance values of these polymers films were over 80% in the visible range. Their ionic conductivities were controlled via changes in the concentration of the linker, dimethylol propionic acid (DMPA), and the lithium salt incorporated into the polymer. The maximum ionic conductivity reached 3.7 mS/cm at room temperature (∼23 °C) when the DMPA/poly(ethylene glycol) molar ratio was 0.25, and the ionic conductivity was found to be proportional to the salt concentration. We believe that these polymer electrolytes will be useful in various electrochemical applications where flexibility, high ionic conductivity, and transparency in the electrolytes are necessary. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45009.

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Waterborne polyurethane single-ion electrolyte from aliphatic diisocyanate and various molecular length of polyethylene glycol

Cited by 13 publications

References 17 publications

Characterization of Novel Castor Oil-Based Polyurethane Polymer Electrolytes

Characterization of Novel Castor Oil-Based Polyurethane Polymer Electrolytes

Low-Initial-Modulus Biodegradable Polyurethane Elastomers for Soft Tissue Regeneration

Poly(urethane acrylate)‐based gel polymer films for mechanically stable, transparent, and highly conductive polymer electrolyte applications

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