Self-Healing Poly(acrylic acid) Hydrogels with Shape Memory Behavior of High Mechanical Strength

2014 ◽  
Vol 47 (19) ◽  
pp. 6889-6899 ◽  
Author(s):  
Umit Gulyuz ◽  
Oguz Okay
Keyword(s):  
Acrylic Acid ◽  
Mechanical Strength ◽  
Shape Memory ◽  
Self Healing ◽  
High Mechanical Strength ◽  
Shape Memory Behavior ◽  
Poly Acrylic Acid

Multiamine-induced self-healing poly (Acrylic Acid) hydrogels with shape memory behavior

2018 ◽  
Vol 50 (7) ◽  
pp. 485-493 ◽  
Author(s):  
Jun Lan ◽  
Xiuquan Ni ◽  
Chuanzhuang Zhao ◽  
Qiao Liu ◽  
Chongyi Chen
Keyword(s):  
Acrylic Acid ◽  
Shape Memory ◽  
Self Healing ◽  
Shape Memory Behavior ◽  
Poly Acrylic Acid

Melt-Processable Shape-Memory Hydrogels with Self-Healing Ability of High Mechanical Strength

2016 ◽  
Vol 49 (19) ◽  
pp. 7442-7449 ◽  
Author(s):  
Cigdem Bilici ◽  
Volkan Can ◽  
Ulrich Nöchel ◽  
Marc Behl ◽  
Andreas Lendlein ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Shape Memory ◽  
Self Healing ◽  
High Mechanical Strength

scholarly journals Dynamic Nanohybrid-Polysaccharide Hydrogels for Soft Wearable Strain Sensing

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3574
Author(s):  
Pejman Heidarian ◽  
Hossein Yousefi ◽  
Akif Kaynak ◽  
Mariana Paulino ◽  
Saleh Gharaie ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Strain Sensors ◽  
Self Healing ◽  
Nano Materials ◽  
Strain Sensing ◽  
Ferric Ions ◽  
Research Activity ◽  
Adhesion Properties ◽  
High Mechanical Strength ◽  
The Moment

Electroconductive hydrogels with stimuli-free self-healing and self-recovery (SELF) properties and high mechanical strength for wearable strain sensors is an area of intensive research activity at the moment. Most electroconductive hydrogels, however, consist of static bonds for mechanical strength and dynamic bonds for SELF performance, presenting a challenge to improve both properties into one single hydrogel. An alternative strategy to successfully incorporate both properties into one system is via the use of stiff or rigid, yet dynamic nano-materials. In this work, a nano-hybrid modifier derived from nano-chitin coated with ferric ions and tannic acid (TA/Fe@ChNFs) is blended into a starch/polyvinyl alcohol/polyacrylic acid (St/PVA/PAA) hydrogel. It is hypothesized that the TA/Fe@ChNFs nanohybrid imparts both mechanical strength and stimuli-free SELF properties to the hydrogel via dynamic catecholato-metal coordination bonds. Additionally, the catechol groups of TA provide mussel-inspired adhesion properties to the hydrogel. Due to its electroconductivity, toughness, stimuli-free SELF properties, and self-adhesiveness, a prototype soft wearable strain sensor is created using this hydrogel and subsequently tested.

A room-temperature self-healing elastomer with ultra-high strength and toughness fabricated via optimized hierarchical hydrogen-bonding interactions

2022 ◽  
Author(s):  
Liangliang Xia ◽  
Ming Zhou ◽  
Hongjun Tu ◽  
wen Zeng ◽  
xiaoling Yang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Mechanical Strength ◽  
Room Temperature ◽  
Polymeric Materials ◽  
High Strength ◽  
Self Healing ◽  
High Mechanical Strength ◽  
Hydrogen Bonding Interactions ◽  
Healing Efficiency ◽  
Good Healing

The preparation of room-temperature self-healing polymeric materials with good healing efficiency and high mechanical strength is challenging. Two processes are essential to realise the room-temperature self-healing of materials: (a) a...

scholarly journals A conductive self healing polymeric binder using hydrogen bonding for Si anodes in lithium ion batteries

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jaebin Nam ◽  
Eunsoo Kim ◽  
Rajeev K.K. ◽  
Yeonho Kim ◽  
Tae-Hyun Kim
Keyword(s):  
Hydrogen Bonding ◽  
Acrylic Acid ◽  
Lithium Ion Batteries ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Polymer Binder ◽  
Self Healing ◽  
Si Anodes ◽  
Ion Conducting ◽  
Poly Acrylic Acid

Abstract A ureido-pyrimidinone (UPy)-functionalized poly(acrylic acid) grafted with poly(ethylene glycol)(PEG), designated PAU-g-PEG, was developed as a high performance polymer binder for Si anodes in lithium-ion batteries. By introducing both a ureido-pyrimidinone (UPy) unit, which is capable of self-healing through dynamic hydrogen bonding within molecules as well as with Si, and an ion-conducting PEG onto the side chain of the poly(acrylic acid), this water-based self-healable and conductive polymer binder can effectively accommodate the volume changes of Si, while maintaining electronic integrity, in an electrode during repeated charge/discharge cycles. The Si@PAU-g-PEG electrode retained a high capacity of 1,450.2 mAh g−1 and a Coulombic efficiency of 99.4% even after 350 cycles under a C-rate of 0.5 C. Under a high C-rate of 3 C, an outstanding capacity of 2,500 mAh g−1 was also achieved, thus demonstrating its potential for improving the electrochemical performance of Si anodes.

Self-healable gradient copolymers

2019 ◽  
Vol 3 (3) ◽  
pp. 464-471 ◽  
Author(s):  
Jing Cui ◽  
Zhe Ma ◽  
Li Pan ◽  
Chun-Hua An ◽  
Jing Liu ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Ionic Interactions ◽  
Self Healing ◽  
Gradient Copolymers ◽  
High Mechanical Strength ◽  
Gradient Distribution

Synergistic hard/soft gradient distribution and dynamic ionic interactions impart high mechanical strength, toughness, stretchability and tenacious self-healing ability to copolymers.

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