Rationally Constructed Surface Energy and Dynamic Hard Domains Balance Mechanical Strength and Self-Healing Efficiency of Energetic Linear Polymer Materials

Langmuir ◽  
2021 ◽  
Author(s):  
Shanjun Ding ◽  
Jun Zhang ◽  
Guocui Zhu ◽  
Xin Ren ◽  
Lin Zhou ◽  
...  
Keyword(s):  
Surface Energy ◽  
Mechanical Strength ◽  
Linear Polymer ◽  
Polymer Materials ◽  
Self Healing ◽  
Healing Efficiency

Accelerating Self-Healing Driven by Surface Energy Using Bulky Ester Groups in Polymer Materials

2021 ◽  
Author(s):  
Shanjun Ding ◽  
Zhu Wang ◽  
Guocui Zhu ◽  
Ximing Zhang ◽  
Jun Zhang ◽  
...  
Keyword(s):  
Surface Energy ◽  
Polymer Materials ◽  
Self Healing

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...

Tough but self-healing and 3D printable hydrogels for E-skin, E-noses and laser controlled actuators

2019 ◽  
Vol 7 (43) ◽  
pp. 24814-24829 ◽  
Author(s):  
Yitian Wang ◽  
Qiang Chang ◽  
Rixing Zhan ◽  
Kaige Xu ◽  
Ying Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Mechanical Strength ◽  
Polyacrylic Acid ◽  
Self Healing ◽  
Healing Efficiency ◽  
Physically Crosslinked

A versatile hydrogel with extraordinary mechanical strength and self-healing efficiency was developed by integrating physically crosslinked graphene oxide into a chemically crosslinked polyacrylic acid network.

Developing self-healable and antibacterial polyacrylate coatings with high mechanical strength through crosslinking by multi-amine hyperbranched polysiloxane via dynamic vinylogous urethane

2017 ◽  
Vol 5 (32) ◽  
pp. 16889-16897 ◽  
Author(s):  
Youhao Zhang ◽  
Li Yuan ◽  
Qingbao Guan ◽  
Guozheng Liang ◽  
Aijuan Gu
Keyword(s):  
Tensile Strength ◽  
Mechanical Strength ◽  
Self Healing ◽  
High Tensile Strength ◽  
High Mechanical Strength ◽  
Antibacterial Ability ◽  
Healing Efficiency ◽  
Hyperbranched Polysiloxane

A novel multi-functional polyacrylate coating simultaneously showing high tensile strength, good reversible self-healing efficiency and remarkable antibacterial ability has been developed.

scholarly journals Dynamic covalent urea bonds and their potential for development of self-healing polymer materials

2019 ◽  
Vol 7 (26) ◽  
pp. 15933-15943 ◽  
Author(s):  
Zhanhua Wang ◽  
Satesh Gangarapu ◽  
Jorge Escorihuela ◽  
Guoxia Fei ◽  
Han Zuilhof ◽  
...  
Keyword(s):  
Polymer Materials ◽  
Metal Salts ◽  
Self Healing ◽  
Healing Efficiency

The highly resonance-stabilized urea covalent moiety can be made dynamic through mediation of metal salts, thus allowing the development of novel classes of self-healing polymer materials with excellent healing efficiency.

scholarly journals Preparation and Properties of Self-Healing Waterborne Polyurethane Based on Dynamic Disulfide Bond

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2936
Author(s):  
Gongbo Ye ◽  
Tao Jiang
Keyword(s):  
Particle Size ◽  
Tensile Strength ◽  
Healing Process ◽  
Waterborne Polyurethane ◽  
The Self ◽  
Polymer Materials ◽  
Self Healing ◽  
Heat Treated ◽  
Healing Efficiency ◽  
Excellent Stability

A self-healing waterborne polyurethane (WPU) materials containing dynamic disulfide (SS) bond was prepared by introducing SS bond into polymer materials. The zeta potential revealed that all the synthesized WPU emulsions displayed excellent stability, and the particle size of them was about 100 nm. The characteristic peaks of N-H and S-S in urethane were verified by FTIR, and the chemical environment of all elements were confirmed by the XPS test. Furthermore, the tensile strength, self-healing process and self-healing efficiency of the materials were quantitatively evaluated by tensile measurements. The results showed that the self-healing efficiency could reach 96.14% when the sample was heat treated at 70 °C for 4 h. In addition, the material also showed a good reprocessing performance, and the tensile strength of the reprocessed film was 3.39 MPa.

Compression Behavior of a Self-Healing Fibre Reinforced Epoxy Composite

2011 ◽  
Vol 55-57 ◽  
pp. 1281-1286
Author(s):  
Jim Lee ◽  
Debes Bhattacharyya ◽  
Ming Qiu Zhang ◽  
Yiu Wing Mai ◽  
Yan Chao Yuan
Keyword(s):  
Polymer Composite ◽  
Glass Fibre ◽  
Epoxy Matrix ◽  
Epoxy Composite ◽  
Polymer Materials ◽  
Epoxy Composites ◽  
Self Healing ◽  
Compression Behavior ◽  
Healing Efficiency ◽  
Glass Fibre Reinforced

The concept of introducing self-healing capabilities in polymer materials and systems has been based on mimicking biological self-healing materials and systems, for example, materials like proteins have phenomenal capabilities in self-healing damaged biological structures. This work has been extended to investigate self-healing capabilities of fibre reinforced epoxy composites. Microencapsulated epoxy and mercaptan healing agents were incorporated into a glass fibre reinforced epoxy matrix to produce a polymer composite capable of self-healing. The specimens containing the microencapsulated epoxy and mercaptan healing agents did gain excellent strength and achieved a healing efficiency up to 140%.

Multivalent urea bond assembly of polyacrylate oligomers with improved mechanical strength and high self-healing efficiency

2019 ◽  
Vol 137 ◽  
pp. 79-87 ◽  
Author(s):  
Haoyuan Ma ◽  
Yuetao Liu ◽  
Chuancong Zhu ◽  
Zhen Yuan ◽  
Chenzhengzhe Yan ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Self Healing ◽  
Healing Efficiency

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.

scholarly journals Ultrarobust, tough and highly stretchable self-healing materials based on cartilage-inspired noncovalent assembly nanostructure

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yuyan Wang ◽  
Xin Huang ◽  
Xinxing Zhang
Keyword(s):  
Spider Silk ◽  
Self Healing ◽  
High Toughness ◽  
Healing Efficiency ◽  
Strong Interfacial Interaction ◽  
Highly Stretchable ◽  
Noncovalent Bonds ◽  
Actuation Devices ◽  
Noncovalent Bonding ◽  
Polyurethane Matrix

AbstractSelf-healing materials integrated with excellent mechanical strength and simultaneously high healing efficiency would be of great use in many fields, however their fabrication has been proven extremely challenging. Here, inspired by biological cartilage, we present an ultrarobust self-healing material by incorporating high density noncovalent bonds at the interfaces between the dentritic tannic acid-modified tungsten disulfide nanosheets and polyurethane matrix to collectively produce a strong interfacial interaction. The resultant nanocomposite material with interwoven network shows excellent tensile strength (52.3 MPa), high toughness (282.7 MJ m‒3, which is 1.6 times higher than spider silk and 9.4 times higher than metallic aluminum), high stretchability (1020.8%) and excellent healing efficiency (80–100%), which overturns the previous understanding of traditional noncovalent bonding self-healing materials where high mechanical robustness and healing ability are mutually exclusive. Moreover, the interfacical supramolecular crosslinking structure enables the functional-healing ability of the resultant flexible smart actuation devices. This work opens an avenue toward the development of ultrarobust self-healing materials for various flexible functional devices.

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