scholarly journals Irreversible and Self-Healing Electrically Conductive Hydrogels Made of Bio-Based Polymers

2022 ◽  
Vol 23 (2) ◽  
pp. 842
Author(s):  
Ahmed Ali Nada ◽  
Anita Eckstein Andicsová ◽  
Jaroslav Mosnáček
Keyword(s):  
Renewable Resources ◽  
Mechanical Stability ◽  
Conductive Polymers ◽  
Special Focus ◽  
Self Healing ◽  
Natural Polymers ◽  
Electrically Conductive ◽  
Preparation Methods ◽  
Cross Links ◽  
Conductive Hydrogels

Electrically conductive materials that are fabricated based on natural polymers have seen significant interest in numerous applications, especially when advanced properties such as self-healing are introduced. In this article review, the hydrogels that are based on natural polymers containing electrically conductive medium were covered, while both irreversible and reversible cross-links are presented. Among the conductive media, a special focus was put on conductive polymers, such as polyaniline, polypyrrole, polyacetylene, and polythiophenes, which can be potentially synthesized from renewable resources. Preparation methods of the conductive irreversible hydrogels that are based on these conductive polymers were reported observing their electrical conductivity values by Siemens per centimeter (S/cm). Additionally, the self-healing systems that were already applied or applicable in electrically conductive hydrogels that are based on natural polymers were presented and classified based on non-covalent or covalent cross-links. The real-time healing, mechanical stability, and electrically conductive values were highlighted.

scholarly journals The Polymer Binders for the Electrodes of Lithium Batteries Part 2. Synthetic and Natural Polymers

2020 ◽  
Vol 20 (4) ◽  
pp. 175-205
Author(s):  
Aigul S. Istomina ◽  
◽  
Olga V. Bushkova ◽  
Keyword(s):  
Three Dimensional ◽  
Synthetic Polymers ◽  
Water Soluble ◽  
Self Healing ◽  
Composite Electrodes ◽  
Natural Polymers ◽  
Power Characteristics ◽  
Polymer Binders ◽  
Dimensional Network ◽  
Cross Links

The second part of the review describes the prospects of using alternative polymer binders for composite electrodes of lithium electrochemical systems. Possible options having been taken into account, the most popular commercially-available synthetic polymers with functional group (the ones forming aqueous solutions or dispersions predominantly) and water-soluble polymers of natural origin are considered. The versatility of such materials is their distinctive feature. The availability of salt forms for natural and synthetic polymers, many of which are polyelectrolytes, makes it possible to significantly affect the ion transfer in the composite electrode mass, reducing the polarization of the electrodes and improving the power characteristics of batteries. The ability to form “artificial SEI” and / or form a three-dimensional network with self-healing cross-links between macromolecules allows long-term safe cycling, the latter being especially important for active materials with very large volume changes during lithium intercalation / deintercalation (e.g. silicon).

Polypyrrole/PU hybrid hydrogels: electrically conductive and fast self-healing for the potential application in body-monitor sensor

2021 ◽  
Author(s):  
Zhanyu Jia ◽  
Guangyao Li ◽  
Juan Wang ◽  
shouhua Su ◽  
Jie Wen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Potential Application ◽  
Self Healing ◽  
Electrically Conductive ◽  
Sensor Application ◽  
Hybrid Hydrogels ◽  
Health Monitor

Conductivity, self-healing and moderate mechanical properties are necessary for multifunctional hydrogels which have great potential in health-monitor sensor application. However, the combination of electrical conductivity, self-healing and good mechanical properties...

Influence of electrically conductive polymers on the operating parameters of lead/acid batteries

1997 ◽  
Vol 67 (1-2) ◽  
pp. 111-113 ◽  
Author(s):  
V.E. Dmitrenko ◽  
B.Z. Lubentsov ◽  
S.G. Yevdokimenko ◽  
I.I. Lisyansky ◽  
V.A. Soldatenko
Keyword(s):  
Conductive Polymers ◽  
Operating Parameters ◽  
Electrically Conductive ◽  
Lead Acid Batteries ◽  
Lead Acid

scholarly journals High strength and conductive hydrogel with fully interpenetrated structure from alginate and acrylamide

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 391-397
Author(s):  
Tao Liu ◽  
Ripeng Zhang ◽  
Jianzhi Liu ◽  
Ling Zhao ◽  
Yueqin Yu
Keyword(s):  
Mechanical Performance ◽  
Three Dimensional ◽  
High Strength ◽  
Extreme Environment ◽  
Natural Polymers ◽  
Conductive Hydrogel ◽  
Wide Range ◽  
Interpenetrated Structure ◽  
Conductive Hydrogels ◽  
Conductive Properties

Abstract Highly stretched and conductive hydrogels, especially synthetized from natural polymers, are beneficial for highly stretched electronic equipment which is applied in extreme environment. We designed and prepared robust and tough alginate hydrogels (GMA-SA-PAM) using the ingenious strategy of fully interpenetrating cross-linking, in which the glycidyl methacrylate (GMA) was used to modify sodium alginate (SA) and then copolymerized with acrylamide (AM) and methylenebisacrylamide (BIS) as cross-linkers. The complete cross-linked structures can averagely dissipate energy and the polymer structures can maintain hydrogels that are three-dimensional to greatly improve the mechanical performance of hydrogels. The GMA-SA-PAM hydrogels display ultra-stretchable (strain up to ∼407% of tensile strain) and highly compressible (∼57% of compression strain) properties. In addition, soaking the GMA-SA-PAM hydrogel in 5 wt% NaCl solution also endows the conductivity of the hydrogel (this hydrogel was named as GSP-Na) with excellent conductive properties (5.26 S m−1). The GSP-Na hydrogel with high stability, durability, as well as wide range extent sensor is also demonstrated by researching the electrochemical signals and showing the potential for applications in wearable and quickly responded electronics.

Stimuli-responsive conductive hydrogels: design, property and applications

2021 ◽  
Author(s):  
Zexing Deng ◽  
Rui Yu ◽  
Baolin Guo
Keyword(s):  
Conductive Polymers ◽  
Research Field ◽  
Stimuli Responsive ◽  
Conductive Hydrogel ◽  
Design Property ◽  
Conductive Hydrogels

Stimuli-responsive conductive hydrogel has been emerged as a new surging concept in hydrogel research field due to its combined advantages of stimuli-responsivity and conductivity from conductive polymers (such as polyaniline,...

Natural Polymers for Biodegradable Dressings to Save the Environment

2021 ◽  
Vol 6 (2) ◽  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Renewable Resources ◽  
Raw Materials ◽  
Current System ◽  
Future Generations ◽  
Natural Polymers ◽  
Surgical Masks ◽  
By Products ◽  
Global Water

The current fashion system uses high volumes of non-renewable resources to produce clothes, being responsible for 10% of the global greenhouse gas emissions into the atmosphere every year and 20%of the global water wasted. At the same time people are buying 60%more clothing than 15 Years ago, which going in the landfills, causes 92 million tons of waste each year. This waste has been further increased by the surgical masks used for COVID-19 pandemic. Thus, a new way of designing and producing clothing needs to be incorporated into the current system to facilitate its recycling making it more circular. New tissues, therefore, are proposed made by natural polysaccharides, embedded by micro- Nano capsules of chitin Nano fibrils and Nano lignin all obtained as by- products from food and forestry waste respectively. Thus, pollution and waste will be reduced and the natural raw materials will be maintained for the future generations.

scholarly journals Recent Developments about Conductive Polymer Based Composite Photocatalysts

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 206 ◽  
Author(s):  
Sher Lee ◽  
Chi-Jung Chang
Keyword(s):  
Photocatalytic Activity ◽  
Conductive Polymers ◽  
Conductive Polymer ◽  
Charge Carriers ◽  
Synergic Effect ◽  
Preparation Methods ◽  
Composite Photocatalysts ◽  
Recent Developments ◽  
Visible Light Driven ◽  
Semiconductor Nanomaterials

Conductive polymers have been widely investigated in various applications. Several conductive polymers, such as polyaniline (PANI), polypyrrole (PPy), poly(3,4-ethylenedioxythiophene) (PEDOT)), and polythiophene (PTh) have been loaded with various semiconductor nanomaterials to prepare the composite photocatalysts. However, a critical review of conductive polymer-based composite photocatalysts has not been available yet. Therefore, in this review, we summarized the applications of conductive polymers in the preparation of composite photocatalysts for photocatalytic degradation of hazardous chemicals, antibacterial, and photocatalytic hydrogen production. Various materials were systematically surveyed to illustrate their preparation methods, morphologies, and photocatalytic performances. The synergic effect between conductive polymers and semiconductor nanomaterials were observed for a lot of composite photocatalysts. The band structures of the composite photocatalysts can be analyzed to explain the mechanism of their enhanced photocatalytic activity. The incorporation of conductive polymers can result in significantly improved visible-light driven photocatalytic activity by enhancing the separation of photoexcited charge carriers, extending the light absorption range, increasing the adsorption of reactants, inhibiting photo-corrosion, and reducing the formation of large aggregates. This review provides a systematic concept about how conductive polymers can improve the performance of composite photocatalysts.

Nanostructured electrically conductive hydrogels obtained via ultrafast laser processing and self-assembly

Nanoscale ◽  
2019 ◽  
Vol 11 (18) ◽  
pp. 9176-9184 ◽  
Author(s):  
Yufeng Tao ◽  
Chengyiran Wei ◽  
Jingwei Liu ◽  
Chunsan Deng ◽  
Song Cai ◽  
...  
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Self Assembly ◽  
Laser Processing ◽  
Ultrafast Laser ◽  
Polymeric Matrix ◽  
Polymer Composite Materials ◽  
Electrically Conductive ◽  
Conductive Hydrogels

Ultrafast laser-processed MWNT/polymer composite materials for an absorbent polymeric matrix and self-assembly of PEDOT:PSS to obtain nanostructured electrically conductive hydrogels.

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