Interfacial adhesion and self-healing kinetics of multi-stimuli responsive colorless polymer bilayers

2020 ◽  
Vol 203 ◽  
pp. 108451 ◽  
Author(s):  
Youngnam Kim ◽  
Ki-Ho Nam ◽  
Yong Chae Jung ◽  
Haksoo Han
Keyword(s):  
Interfacial Adhesion ◽  
Self Healing ◽  
Stimuli Responsive ◽  
Polymer Bilayers ◽  
Kinetics Of

A highly stretchable, self-healing, recyclable and interfacial adhesion gel: Preparation, characterization and applications

2019 ◽  
Vol 360 ◽  
pp. 334-341 ◽  
Author(s):  
Ruofei Hu ◽  
Jing Zhao ◽  
Yihe Wang ◽  
Zhongxiao Li ◽  
Junping Zheng
Keyword(s):  
Interfacial Adhesion ◽  
Self Healing ◽  
Highly Stretchable ◽  
Gel Preparation

scholarly journals Aqueous interfacial gels assembled from small molecule supramolecular polymers

2017 ◽  
Vol 8 (2) ◽  
pp. 1350-1355 ◽  
Author(s):  
Alexander S. Groombridge ◽  
Aniello Palma ◽  
Richard M. Parker ◽  
Chris Abell ◽  
Oren A. Scherman
Keyword(s):  
Small Molecules ◽  
Small Molecule ◽  
Self Assembly ◽  
Hyperbranched Polymer ◽  
Soft Matter ◽  
Supramolecular Polymers ◽  
Supramolecular Network ◽  
Self Healing ◽  
Liquid Interfaces ◽  
Stimuli Responsive

The successful self-assembly of a stimuli-responsive aqueous supramolecular hyperbranched polymer from small molecules and the macrocyclic host cucurbit[8]uril (CB[8]) is reported. This self-healing supramolecular network can act as a soft matter barrier at liquid–liquid interfaces.

scholarly journals Chemical and photochemical DNA “gears” reversibly control stiffness, shape-memory, self-healing and controlled release properties of polyacrylamide hydrogels

2019 ◽  
Vol 10 (4) ◽  
pp. 1008-1016 ◽  
Author(s):  
Xia Liu ◽  
Junji Zhang ◽  
Michael Fadeev ◽  
Ziyuan Li ◽  
Verena Wulf ◽  
...  
Keyword(s):  
Controlled Release ◽  
Shape Memory ◽  
Self Healing ◽  
Stimuli Responsive ◽  
Polyacrylamide Hydrogels

Stimuli-responsive polyacrylamide hydrogels crosslinked by glucosamine–boronate/G-quadruplexes or azobenzene-functionalized DNA reveal controlled stiffness using chemical or photochemical triggers.

A Stimuli-Responsive Supramolecular Hydrogel for Controlled Release of Drug

2017 ◽  
Vol 05 (03) ◽  
pp. 1750011 ◽  
Author(s):  
Subharanjan Biswas ◽  
Lakshmi Priya Datta ◽  
Soumyajit Roy
Keyword(s):  
Hydrogen Bonding ◽  
Controlled Release ◽  
Polyacrylic Acid ◽  
Dynamic Equilibrium ◽  
Guanidine Hydrochloride ◽  
Environmentally Benign ◽  
Self Healing ◽  
Stimuli Responsive ◽  
Interconnected Network ◽  
Supramolecular Hydrogel

An inexpensive, facile, and environmentally benign method has been developed for the preparation of stimuli-responsive and self-healing polyacrylic acid–chitosan-based supramolecular hydrogels. Guanidine hydrochloride is used as the supramolecular crosslinker to form an interconnected network with polyacrylic acid–chitosan complex. Because of the dynamic equilibrium between the hydrogen-bonding sites of the components, the hydrogels were found to be self-healable and sensitive to biochemical-stimulus, such as pH. Controlled loading of drug like doxorubicin and its significant anticancer activity of such hydrogels is worth mentioning.

scholarly journals Stimuli-Responsive Materials: Hierarchical Multi-Step Folding of Polymer Bilayers (Adv. Funct. Mater. 18/2013)

2013 ◽  
Vol 23 (18) ◽  
pp. 2222-2222
Author(s):  
Georgi Stoychev ◽  
Sébastien Turcaud ◽  
John W. C. Dunlop ◽  
Leonid Ionov
Keyword(s):  
Stimuli Responsive ◽  
Responsive Materials ◽  
Polymer Bilayers

Silica/Polymer Double-Walled Hybrid Nanotubes: Synthesis and Application as Stimuli-Responsive Nanocontainers in Self-Healing Coatings

ACS Nano ◽  
2013 ◽  
Vol 7 (3) ◽  
pp. 2470-2478 ◽  
Author(s):  
Guo Liang Li ◽  
Zhaoliang Zheng ◽  
Helmuth Möhwald ◽  
Dmitry G. Shchukin
Keyword(s):  
Self Healing ◽  
Stimuli Responsive

Effect of passivation on stress relaxation in electroplated copper films

2006 ◽  
Vol 21 (6) ◽  
pp. 1512-1518 ◽  
Author(s):  
Dongwen Gan ◽  
Paul S. Ho ◽  
Yaoyu Pang ◽  
Rui Huang ◽  
Jihperng Leu ◽  
...  
Keyword(s):  
Stress Relaxation ◽  
Interfacial Adhesion ◽  
Boundary Diffusion ◽  
Isothermal Condition ◽  
Copper Films ◽  
Relaxation Rates ◽  
Cu Films ◽  
Electroplated Copper ◽  
The Relationship ◽  
Kinetics Of

The present study investigated the effect of passivation on the kinetics of interfacial mass transport by measuring stress relaxation in electroplated Cu films with four different cap layers: SiN, SiC, SiCN, and a Co metal cap. Stress curves measured under thermal cycling showed different behaviors for the unpassivated and passivated Cu films, but were essentially indifferent for the films passivated with different cap layers. On the other hand, stress relaxation measured under an isothermal condition revealed clearly the effect of passivation, indicating that interface diffusion controls the kinetics of stress relaxation. The relaxation rates in the passivated Cu films were found to decrease in the order of SiC, SiCN, SiN, and metal caps. This correlates well with previous studies on the relationship between interfacial adhesion and electromigration. A kinetic model based on coupling of interface and grain-boundary diffusion was used to deduce the interface diffusivities and the corresponding activation energies.

scholarly journals Self-Healing Photocurable Epoxy/thiol-ene Systems Using an Aromatic Epoxy Resin

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Ricardo Acosta Ortiz ◽  
Omar Acosta Berlanga ◽  
Aída Esmeralda García Valdez ◽  
Rafael Aguirre Flores ◽  
José Guadalupe Télles Padilla ◽  
...  
Keyword(s):  
Disulfide Bonds ◽  
Epoxy Resins ◽  
Room Temperature ◽  
Gel Permeation Chromatography ◽  
Mechanical Analysis ◽  
Hypervalent Iodine ◽  
Self Healing ◽  
Healing Efficiency ◽  
Kinetics Of ◽  
Epoxy Groups

A rapid and efficient method to obtain self-healing epoxy resins is discussed. This method is based on the use of a thiol-disulfide oligomer obtained by partial oxidation of a multifunctional thiol using a hypervalent iodine (III) compound as oxidant. The oligomer was characterized by Fourier transform infrared spectroscopy (FTIR), Raman and nuclear magnetic resonance spectroscopies, and gel permeation chromatography (GPC). The oligomer was a joint component of the thiol-ene system along with a tetra-allyl-functionalized curing agent. The kinetics of the photopolymerization of diglycidylether of bisphenol A (DGEBA) revealed that conversions of the epoxy groups as high as 80% were achieved in only 15 minutes by increasing the concentration of the thiol-ene system in the formulation. The disulfide bonds introduced in the copolymer using the thiol-disulfide oligomer allowed the repairing of the test specimens in as little as 10 minutes when the specimens were heated at 80°C or for 500 minutes at room temperature. The analysis of the mechanical properties using dynamic mechanical analysis (DMA) showed that the specimens displayed a healing efficiency up to 111% compared with the unhealed specimens, depending on the amount of polythioethers present in the copolymer.

Sign in / Sign up

Export Citation Format

Share Document