Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

2020 ◽  
Vol 31 (7) ◽  
pp. 1648-1660 ◽  
Author(s):  
Tingting Li ◽  
Xiangming Hu ◽  
Qingsong Zhang ◽  
Yanyun Zhao ◽  
Peng Wang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Tannic Acid ◽  
Self Healing ◽  
Double Network ◽  
Poly Acrylic Acid

Preparation and self-healing behaviors of poly(acrylic acid)/cerium ions double network hydrogels

2015 ◽  
Vol 23 (12) ◽  
pp. 1098-1102 ◽  
Author(s):  
Hongwei Zhou ◽  
Guohe Xu ◽  
Jie Li ◽  
Shihao Zeng ◽  
Xiaolong Zhang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Self Healing ◽  
Double Network ◽  
Poly Acrylic Acid

scholarly journals Biodegradable Poly(acrylic acid-co-acrylamide)/Poly(vinyl alcohol) Double Network Hydrogels with Tunable Mechanics and High Self-healing Performance

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 952 ◽  
Author(s):  
Zhanxin Jing ◽  
Aixing Xu ◽  
Yan-Qiu Liang ◽  
Zhaoxia Zhang ◽  
Chuanming Yu ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Self Healing ◽  
Simulated Intestinal Fluid ◽  
Double Network ◽  
System P ◽  
Biodegradable Poly ◽  
Novel Strategy ◽  
Poly Acrylic Acid

We proposed a novel strategy in the fabrication of biodegradable poly(acrylic acid-co-acrylamide)/poly(vinyl alcohol) (P(AAc-co-Am)/PVA) double network (DN) hydrogels with good mechanical and self-healing properties. In the DN hydrogel system, P(AAc-co-Am) polymers form a network through the ionic coordinates between –COO– and Fe3+ and hydrogen bonding between –COOH and –CONH2, while another network is fabricated by the complexation between PVA and borax. The influences of the composition on the rheological behaviors and mechanical properties of the synthesized DN hydrogels were investigated. The rheological measurements revealed that the viscoelasticity and stiffness of the P(AAc-co-Am)/PVA DN hydrogels increase as the acrylamide and Fe3+ concentrations increase. At 0.05 mmol of Fe3+ and 50% of acrylamide, tensile strength and elongation at break of P(AAc-co-Am)/PVA DN hydrogels could reach 329.5 KPa and 12.9 mm/mm, respectively. These properties arise from the dynamic reversible bonds existed in the P(AAc-co-Am)/PVA DN hydrogels. These reversible bonds also give good self-healing properties, and the maximum self-healing efficiency of P(AAc-co-Am)/PVA DN hydrogels is up to 96.4%. The degradation test of synthesized DN hydrogels was also conducted under simulated physiological conditions and the weight loss could reach 74% in the simulated intestinal fluid. According to the results presented here, the synthesized P(AAc-co-Am)/PVA DN hydrogels have a potential application prospect in various biomedical fields.

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.

Mechanical and Self-Healing Properties of Poly Acrylic Acid/Laponite/Fe3+ Nanocomposite Hydrogel

2018 ◽  
Vol 10 (12) ◽  
pp. 1813-1822 ◽  
Author(s):  
Guihua Li ◽  
Xingxiang Ji ◽  
Jinhuan Sun ◽  
Zaiwu Yuan ◽  
Yuexia Wang
Keyword(s):  
Acrylic Acid ◽  
Self Healing ◽  
Nanocomposite Hydrogel ◽  
Poly Acrylic Acid

A pH-sensitive, strong double-network hydrogel: Poly(ethylene glycol) methyl ether methacrylates-poly(acrylic acid)

2011 ◽  
Vol 50 (6) ◽  
pp. 423-430 ◽  
Author(s):  
Sina Naficy ◽  
Joselito M. Razal ◽  
Philip G. Whitten ◽  
Gordon G. Wallace ◽  
Geoffrey M. Spinks
Keyword(s):  
Acrylic Acid ◽  
Ethylene Glycol ◽  
Methyl Ether ◽  
Ph Sensitive ◽  
Poly Ethylene Glycol ◽  
Double Network ◽  
Poly Ethylene ◽  
Glycol Methyl Ether ◽  
Poly Acrylic Acid

High-performance poly(acrylic acid) hydrogels formed with a block copolymer crosslinker containing amino-acid derivatives

Soft Matter ◽  
2019 ◽  
Vol 15 (37) ◽  
pp. 7381-7389 ◽  
Author(s):  
Rui Zhang ◽  
Hengzhi Ruan ◽  
Tianxu Zhou ◽  
Qionglong Fu ◽  
Hongwei Peng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Amino Acid ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Acrylic Acid ◽  
High Performance ◽  
Amino Acid Derivatives ◽  
Self Healing ◽  
Poly Acrylic Acid

Two block copolymers containing amino-acid derivatives were employed as a macro-crosslinker to prepare high performance PAA hydrogels concluding desirable mechanical properties and self-healing abilities, as well as notch-insensitivity.

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