Structural Control of Self-Healing Silica-Poly(Tetrahydropyran)-Poly(ɛ-caprolactone) Hybrids

2021 ◽  
Author(s):  
Wei Fan ◽  
Randall Yougman ◽  
Xiangting Ren ◽  
Donghong Yu ◽  
Morten M Smedskjaer
Keyword(s):  
Cyclic Loading ◽  
Hybrid Systems ◽  
Structural Control ◽  
Self Healing ◽  
Interpenetrating Network ◽  
Inorganic Components

In some biomaterial applications, there is a need for the devices to withstand cyclic loading. Recently, self-healing hybrid systems with interpenetrating network of organic and inorganic components have been discovered....

scholarly journals Durability of self-healing dental composites: A comparison of performance under monotonic and cyclic loading

2018 ◽  
Vol 93 ◽  
pp. 1020-1026 ◽  
Author(s):  
Mobin Yahyazadehfar ◽  
George Huyang ◽  
Xiaohong Wang ◽  
Yuwei Fan ◽  
Dwayne Arola ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Dental Composites ◽  
Self Healing

Polyphosphazene Toughened PMR-type Thermosets

1996 ◽  
Vol 8 (3) ◽  
pp. 455-473 ◽  
Author(s):  
O L Abu-Shanab ◽  
C P Chang ◽  
M D Soucek
Keyword(s):  
Thin Films ◽  
Fracture Toughness ◽  
Oxidative Stability ◽  
Tensile Properties ◽  
Hybrid Systems ◽  
Structure Property ◽  
Interpenetrating Network ◽  
Polymeric Matrices ◽  
Grafted Copolymer ◽  
Structure Property Relationships

Two new polyphosphazenes, poly(4-maleimidophenoxy/phenoxy)phosphazene and poly(4-phthalimidophenoxy/phenoxy)phosphazene, were prepared and used to toughen a PMR polyimide designated LaRCTMRP46. These toughened polyimides were evaluated as thin films with a 0–40 wt% range of polyphosphazene to polyimide. The structure–property relationships of these inorganic/organic polymeric matrices were studied and evaluated in terms of fracture toughness, thermo-oxidative stability, and thermal, mechanical, and tensile properties. The hybrid systems revealed an increase in fracture toughness up to 20 wt% polyphosphazene load without any substantial loss in tensile properties. With 5 wt% poly(4-phthalimidophenoxy/phenoxy)phosphazene loading, the fracture toughness of the semi-interpenetrating network was increased by 124%. When 10 wt% poly(4- maleimidophenoxy/phenoxy)phosphazene loading was used, the fracture toughness of the grafted copolymer was improved by 217%. In addition, substantial enhancement in thermo-oxidative stability was also observed.

Meniscal tissue engineering via 3D printed PLA monolith with carbohydrate based self-healing interpenetrating network hydrogel

2020 ◽  
Vol 162 ◽  
pp. 1358-1371 ◽  
Author(s):  
Santosh Gupta ◽  
Akriti Sharma ◽  
J. Vasantha Kumar ◽  
Vineeta Sharma ◽  
Piyush Kumar Gupta ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Self Healing ◽  
Interpenetrating Network ◽  
Meniscal Tissue ◽  
3D Printed

scholarly journals Behaviour of Pre-Cracked Self-Healing Cementitious Materials under Static and Cyclic Loading

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1149 ◽  
Author(s):  
Giovanni Anglani ◽  
Jean-Marc Tulliani ◽  
Paola Antonaci
Keyword(s):  
Cyclic Loading ◽  
Bearing Capacity ◽  
Peak Force ◽  
Self Healing ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Number Of Cycles ◽  
Static And Cyclic Loading ◽  
Static Conditions ◽  
Cycles To Failure

Capsule-based self-healing is increasingly being targeted as an effective way to improve the durability and sustainability of concrete infrastructures through the extension of their service life. Assessing the mechanical and durability behaviour of self-healing materials after damage and subsequent autonomous repair is essential to validate their possible use in real structures. In this study, self-healing mortars containing cementitious tubular capsules with a polyurethanic repairing agent were experimentally investigated. Their mechanical behaviour under both static and cyclic loading was analysed as a function of some factors related to the capsules themselves (production method, waterproof coating configuration, volume of repairing agent stored) or to the specimens (number, size and distribution of the capsules in the specimen). Their mechanical performances were quantified in terms of recovery of load-bearing capacity under static conditions and number of cycles to failure as a function of the peak force under cyclic conditions. Positive results were achieved, with a maximum load recovery index up to more than 40% and number of cycles to failure exceeding 10,000 in most cases, with peak force applied during cyclic loading at least corresponding to 70% of the estimated load-bearing capacity of the healed samples.

Highly stretchable and tough alginate-based cyclodextrin/Azo-polyacrylamide interpenetrating network hydrogel with self-healing properties

2021 ◽  
Vol 256 ◽  
pp. 117595
Author(s):  
Furui He ◽  
Longzheng Wang ◽  
Shujuan Yang ◽  
Wenqi Qin ◽  
Yuhong Feng ◽  
...  
Keyword(s):  
Self Healing ◽  
Interpenetrating Network ◽  
Highly Stretchable

scholarly journals Research on synthesis and self-healing properties of interpenetrating network hydrogels based on reversible covalent and reversible non-covalent bonds

2021 ◽  
Vol 28 (1) ◽  
Author(s):  
Xiaowen Huang ◽  
Xiaofei Wang ◽  
Chuanying Shi ◽  
Yang Liu ◽  
Yanyan Wei
Keyword(s):  
Hydrogen Bonds ◽  
Disulfide Bonds ◽  
The Self ◽  
Self Healing ◽  
Complex Environment ◽  
Interpenetrating Network ◽  
Covalent Bonds ◽  
Healing Efficiency ◽  
Potential Applications ◽  
Reversible Covalent

AbstractFirst of all, we will provide a brief background on the self-healing hydrogels we produced which are suitable for the complex environment of nature. In this paper, disulfide bonds and acylhydrazone bonds can be combined in SH-WPU and hydrogen bonds existed in PAMAM. And the hydrogel can achieve self-healing under acid, alkaline, neutral or light environment.Self-healing for 1 h, 24 h and 48 h, the self-healing efficiency is 31.58%, 49.84% and 87.35% respectively. This effect achieved the desired effect and the repair effect is more obvious than previous research results. The hydrogels have potential applications in the field of biomaterials.

scholarly journals Structural control of polyelectrolyte/microemulsion droplet complexes (PEMECs) with different polyacrylates

2019 ◽  
Vol 10 (2) ◽  
pp. 385-397 ◽  
Author(s):  
Miriam Simon ◽  
Patrick Krause ◽  
Leonardo Chiappisi ◽  
Laurence Noirez ◽  
Michael Gradzielski
Keyword(s):  
Hybrid Systems ◽  
Structural Control ◽  
High Loading ◽  
Microemulsion Droplet

Polyelectrolyte/microemulsion complexes (PEMECs) are very versatile hybrid systems, combining high loading capacities of microemulsions with larger-scale structuring induced by polyelectrolytes.

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