A Conductive, Self-Healing Hybrid Hydrogel with Excellent Water-Retention and Thermal Stability by Introducing Ethylene Glycol as a Crystallization Inhibitor

2020 ◽  
Vol 607 ◽  
pp. 125443
Author(s):  
Yiming Zhao ◽  
Yonggan Yan ◽  
Xin Cui ◽  
Xunwei Wu ◽  
Hui Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ethylene Glycol ◽  
Water Retention ◽  
Self Healing ◽  
Hybrid Hydrogel ◽  
Crystallization Inhibitor

The supercooling ability of calcium nitrate solutions in ethylene glycol

1989 ◽  
Vol 54 (10) ◽  
pp. 2711-2714
Author(s):  
Ivo Sláma ◽  
Jarmila Malá
Keyword(s):  
Thermal Stability ◽  
Ethylene Glycol ◽  
Induction Period ◽  
Calcium Nitrate ◽  
Transformation Diagram ◽  
Temperature Transformation ◽  
Thermal Stability Of ◽  
Nitrate Solutions

The dependence of the induction period of crystallization on the supercooling was determined for the Ca(NO3)2-ethylene glycol system at mole fractions of the former from 0 to 0.049, and treated in terms of the TTT (Time-Temperature-Transformation) diagram. Addition of Ca(NO3)2 to ethylene glycol brings about a substantial increase in the critical induction period of crystallization. The thermal stability of glasses is discussed in terms of the shape and position of the TTT curves.

scholarly journals Research on Thermal Stability and Properties of Ca3ZrSi2O9 as Potential T/EBC Materials

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 583
Author(s):  
Yangyang Pan ◽  
Bo Liang ◽  
Yaran Niu ◽  
Dijuan Han ◽  
Dongdong Liu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Stability ◽  
Fracture Toughness ◽  
Room Temperature ◽  
Coefficient Of Thermal Expansion ◽  
Atmospheric Plasma ◽  
Thermal Barrier ◽  
Mechanical And Thermal Properties ◽  
Self Healing ◽  
Barrier Coating

In this study, a new coating material for thermal barrier coating (TBC) or environment barrier coating (EBC) application, Ca3ZrSi2O9 (CZSO), was synthesized and prepared by atmospheric plasma spray (APS) technology. The evolution of the phases and microstructures of the coatings with different thermal-aged were characterized by XRD, XRF, EDS and SEM, respectively. The thermal stability was measured by TG-DTA and DSC. The mechanical and thermal properties, including Vickers hardness (HV), fracture toughness (KIC), thermal conductivity () and coefficient of thermal expansion (CTE) were focused on. It was found that the as-sprayed CZSO coating contained amorphous phase. Crystalline transformation happened at 900–960 ∘C and no mass changes took place from room temperature (RT) to 1300 ∘C. The phenomena of microcrack self-healing and composition uniformity were observed during thermal aging. The of coating was very low at about 0.57–0.80 Wm−1K−1 in 200–1200 ∘C. The combined properties indicated that the CZSO coating might be a potential T/EBC material.

Fast self-healing multifunctional polyvinyl alcohol nano-organic composite hydrogel as building blocks for highly sensitive strain/pressure sensors

2021 ◽  
Author(s):  
Wenhao Zhao ◽  
Dongzhi Zhang ◽  
Yan Yang ◽  
Chen Du ◽  
Bao Zhang
Keyword(s):  
Polyvinyl Alcohol ◽  
Human Computer Interaction ◽  
Pressure Sensors ◽  
Building Blocks ◽  
Composite Hydrogel ◽  
Sensitive Strain ◽  
Self Healing ◽  
Wearable Sensor ◽  
Hybrid Hydrogel ◽  
Highly Sensitive

The conductive and biocompatible hybrid hydrogel was successfully assembled into an adhesive, flexible wearable sensor for ultra-sensitive human-computer interaction and smart detection, which holds excellent self-healing capability. This conductive, repairable...

scholarly journals Sizing and Thermal Stability of Prepared Tetraaminophthalocyaninatocopper(II) Derivatives-grafted Polymers

2016 ◽  
Vol 13 (2) ◽  
pp. 221-234
Author(s):  
Baghdad Science Journal
Keyword(s):  
Thermal Stability ◽  
Ethylene Glycol ◽  
Group Analysis ◽  
Condensation Polymerization ◽  
Grafted Polymers ◽  
Poly Ethylene Glycol ◽  
Molecular Weights ◽  
Poly Ethylene ◽  
Thermal Stability Of ◽  
End Group

Different polymers were prepared by condensation polymerization of sebacic anhydride and adipic anhydride with ethylene glycol and poly(ethylene glycol). Their number average molecular weights were determined by end group analysis. Then, they were grafted on the prepared phthalocyaninatocopper(II) compounds with the general formula (NH2)4PcCu(II) having amino groups of 3,3',3'',3'''- or 4,4',4'',4'''- positions. All prepared polymers, compounds, and phthalocyaninatocopper(II)-grafted polymers were characterized by FTIR. The sizing measurements were carried out in 3,3',3'',3'''- (NH2)4PcCu(II) and 4,4',4'',4'''- (NH2)4PcCu(II) compounds with and without grafting polymers. The results showed that the grafting process led to decreasing in particle size and increasing in surface area. The grafting process was reflected positively on the thermal degradation of 3,3',3'',3'''- (NH2)4PcCu(II) and 4,4',4'',4'''- (NH2)4PcCu(II) grafted polymers. They had higher thermal stability accompanied with higher char residue and T50% weight loss with 3,3',3'',3'''-(NH2)4PcCu(II) and their grafted polymers being the best.

A photo-degradable injectable self-healing hydrogel based on star poly(ethylene glycol)-b-polypeptide as a potential pharmaceuticals delivery carrier

Soft Matter ◽  
2018 ◽  
Vol 14 (36) ◽  
pp. 7420-7428 ◽  
Author(s):  
Dinglei Zhao ◽  
Quan Tang ◽  
Qiang Zhou ◽  
Kang Peng ◽  
Haiyang Yang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Ethylene Glycol ◽  
Local Drug Delivery ◽  
Self Healing ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

As one of the most promising biomaterials, injectable self-healing hydrogels have found broad applications in a number of fields such as local drug delivery.

An Injectable ROS‐Responsive Self‐Healing Hydrogel Based on tetra‐poly(ethylene glycol)‐ b ‐oligo( l ‐methionine)

2019 ◽  
Vol 220 (12) ◽  
pp. 1900106 ◽  
Author(s):  
Dinglei Zhao ◽  
Qiang Zhou ◽  
Kaixiang Yang ◽  
Haiyang Yang ◽  
Quan Tang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Self Healing ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

A novel capsule by poly (ethylene glycol) granulation for self-healing concrete

2020 ◽  
Vol 133 ◽  
pp. 106053 ◽  
Author(s):  
Jianhang Feng ◽  
Hua Dong ◽  
Ruixing Wang ◽  
Yilin Su
Keyword(s):  
Ethylene Glycol ◽  
Self Healing ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Encapsulation of Lanthanide β-diketone Hybrids in Organic Oligomer Poly(ethylene glycol) 400

2015 ◽  
Vol 1102 ◽  
pp. 125-128
Author(s):  
Hua Ti Li ◽  
Dong Liu ◽  
Ying Li ◽  
Jie Lin Wang ◽  
Xia Wang
Keyword(s):  
Thermal Stability ◽  
Ethylene Glycol ◽  
Hybrid Materials ◽  
Mesoporous Material ◽  
Organic Ligand ◽  
Poly Ethylene Glycol ◽  
Characteristic Emission ◽  
Hybrid Precursor ◽  
Poly Ethylene ◽  
The Eu

The organic ligand 2-Thenoyltrifluoroacetone (TTA) which was selected as molecular bridge for sensitization of europium and terbium ions were modified by 3-(triethoxysilyl)-propylisocyanate (TEPIC) to obtain the hybrid precursor TTA-Si. Then the solution of Eu(NO3)3 and Tb(NO3)3 were added in the presence of tetraethylorthosilicate (TEOS). The binary lanthanide organic/inorganic hybrid material were obtained. The ternary hybrid materials were obtained by adding the solution of Eu(NO3)3 and Tb(NO3)3 and Poly (ethylene glycol) (PEG400). We investigated the thermal stability and luminescence properties of hybrids and found that the ternary hybrid materials exhibit better thermal stability and stronger emission intensity. Furthermore, compared with the binary mesoporous material Eu-(TTA-Si)3 and Tb-(TTA-Si)3, the ternary mesoporous material Eu-(TTA-Si)3-PEG and Tb-(TTA-Si)3-PEG exhibits the characteristic emission of the Eu3+ and Tb3+ ion with a higher luminescence intensity, suggesting that the introduction of PEG is of benefit for the sensitization of Eu3+ and Tb3+ luminescence, by replacing H2O groups that can quench the luminescence of Eu3+ and Tb3+ ions.

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