Weldable and Reprocessable Biomimetic Polymer Networks Based on a Hydrogen Bonding and Dynamic Covalent Thiourea Motif

2021 ◽  
Author(s):  
Dong Soo Lee ◽  
Yong-Seok Choi ◽  
Jae Hyuk Hwang ◽  
Jin-Hyeong Lee ◽  
Woohwa Lee ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Polymer Networks ◽  
Biomimetic Polymer

Construction and morphology of non-covalently double-crosslinked supramolecular polymer networks

2019 ◽  
Vol 10 (34) ◽  
pp. 4740-4745 ◽  
Author(s):  
Senbin Chen ◽  
Ke Wang ◽  
Zhen Geng ◽  
Yu Chen ◽  
Xihuang Zheng ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Polymer Networks ◽  
Functionalized Polymers ◽  
Metal Coordination ◽  
Supramolecular Polymer ◽  
Supramolecular Networks

A straightforward synthesis of α-Ba, ω-TAP functionalized polymers, Ba-PnBuA-TAP, is reported, leading to the formation of double-crosslinked supramolecular networks driven via the sequential hydrogen-bonding association and metal-coordination.

scholarly journals Dynamically tuning transient silicone polymer networks with hydrogen bonding

2020 ◽  
Vol 56 (88) ◽  
pp. 13555-13558
Author(s):  
Akop Yepremyan ◽  
Andrew Osamudiamen ◽  
Michael A. Brook ◽  
Andrea Feinle
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Polymer Networks ◽  
Oh Groups ◽  
Energy Absorbing ◽  
Silicone Polymer

Hydrogen bonds on a silicone polymer permit supramolecular silicones to form transient polymer networks with energy absorbing properties that depend on the number of available OH groups.

scholarly journals Physical Meanings of Fractal Behaviors of Water in Aqueous and Biological Systems with Open-Ended Coaxial Electrodes

Sensors ◽  
2019 ◽  
Vol 19 (11) ◽  
pp. 2606
Author(s):  
Shin Yagihara ◽  
Rio Kita ◽  
Naoki Shinyashiki ◽  
Hironobu Saito ◽  
Yuko Maruyama ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Relaxation Time ◽  
Relaxation Process ◽  
Fractal Analysis ◽  
Biological Systems ◽  
Polymer Networks ◽  
Dispersion Systems ◽  
Dispersion State ◽  
Frequency Relaxation ◽  
Average Relaxation Time

The dynamics of a hydrogen bonding network (HBN) relating to macroscopic properties of hydrogen bonding liquids were observed as a significant relaxation process by dielectric spectroscopy measurements. In the cases of water and water rich mixtures including biological systems, a GHz frequency relaxation process appearing at around 20 GHz with the relaxation time of 8.2 ps is generally observed at 25 °C. The GHz frequency process can be explained as a rate process of exchanges in hydrogen bond (HB) and the rate becomes higher with increasing HB density. In the present work, this study analyzed the GHz frequency process observed by suitable open-ended coaxial electrodes, and physical meanings of the fractal nature of water structures were clarified in various aqueous systems. Dynamic behaviors of HBN were characterized by a combination of the average relaxation time and the distribution of the relaxation time. This fractal analysis offered an available approach to both solution and dispersion systems with characterization of the aggregation or dispersion state of water molecules. In the case of polymer-water mixtures, the HBN and polymer networks penetrate each other, however, the HBN were segmented and isolated more by dispersed and aggregated particles in the case of dispersion systems. These HBN fragments were characterized by smaller values of the fractal dimension obtained from the fractal analysis. Some examples of actual usages suggest that the fractal analysis is now one of the most effective tools to understand the molecular mechanism of HBN in aqueous complex materials including biological systems.

Interpenetrating polymer networks with controllable intermolecular hydrogen bonding

1990 ◽  
Vol 23 (1) ◽  
pp. 103-109 ◽  
Author(s):  
Ming Jiang ◽  
Hong Xiao ◽  
Xiaoling Jin ◽  
Tongyin Yu
Keyword(s):  
Hydrogen Bonding ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Intermolecular Hydrogen Bonding

Multiresponsive Reversible Polymer Networks Based on Hydrogen Bonding and Metal Coordination

2011 ◽  
Vol 44 (9) ◽  
pp. 3346-3357 ◽  
Author(s):  
Kamlesh P. Nair ◽  
Victor Breedveld ◽  
Marcus Weck
Keyword(s):  
Hydrogen Bonding ◽  
Polymer Networks ◽  
Metal Coordination
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