scholarly journals Unveiling the molecular mechanism of self-healing in a telechelic, supramolecular polymer network

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Tingzi Yan ◽  
Klaus Schröter ◽  
Florian Herbst ◽  
Wolfgang H. Binder ◽  
Thomas Thurn-Albrecht
Keyword(s):  
Molecular Mechanism ◽  
Polymer Network ◽  
Supramolecular Polymer ◽  
Self Healing

A novel supramolecular polymer network based on a catenane-type crosslinker

2018 ◽  
Vol 9 (16) ◽  
pp. 2087-2091 ◽  
Author(s):  
Wenbo Wang ◽  
Hao Xing
Keyword(s):  
Polymer Network ◽  
Supramolecular Polymer

A novel supramolecular mechanically interlocked crosslinker was designed and used to prepare a supramolecular polymer network.

scholarly journals Mesoscale bicontinuous networks in self-healing hydrogels delay fatigue fracture

2020 ◽  
Vol 117 (14) ◽  
pp. 7606-7612 ◽  
Author(s):  
Xueyu Li ◽  
Kunpeng Cui ◽  
Tao Lin Sun ◽  
Lingpu Meng ◽  
Chengtao Yu ◽  
...  
Keyword(s):  
Fatigue Fracture ◽  
Polymer Network ◽  
Hierarchical Structures ◽  
Soft Materials ◽  
Biological Tissues ◽  
Crack Advance ◽  
Self Healing ◽  
Hard Phase ◽  
Soft Phase ◽  
Simple Model System

Load-bearing biological tissues, such as muscles, are highly fatigue-resistant, but how the exquisite hierarchical structures of biological tissues contribute to their excellent fatigue resistance is not well understood. In this work, we study antifatigue properties of soft materials with hierarchical structures using polyampholyte hydrogels (PA gels) as a simple model system. PA gels are tough and self-healing, consisting of reversible ionic bonds at the 1-nm scale, a cross-linked polymer network at the 10-nm scale, and bicontinuous hard/soft phase networks at the 100-nm scale. We find that the polymer network at the 10-nm scale determines the threshold of energy release rateG0above which the crack grows, while the bicontinuous phase networks at the 100-nm scale significantly decelerate the crack advance until a transitionGtranfar aboveG0. In situ small-angle X-ray scattering analysis reveals that the hard phase network suppresses the crack advance to show decelerated fatigue fracture, andGtrancorresponds to the rupture of the hard phase network.

Supramolecular Polymer Network-Mediated Self-Assembly of Semicrystalline Polymers with Excellent Crystalline Performance

2017 ◽  
Vol 38 (5) ◽  
pp. 1600702 ◽  
Author(s):  
Chih-Chia Cheng ◽  
Wei-Tsung Chuang ◽  
Duu-Jong Lee ◽  
Zhong Xin ◽  
Chih-Wei Chiu
Keyword(s):  
Self Assembly ◽  
Polymer Network ◽  
Semicrystalline Polymers ◽  
Supramolecular Polymer

A self-healing supramolecular polymer gel with stimuli-responsiveness constructed by crown ether based molecular recognition

2013 ◽  
Vol 4 (11) ◽  
pp. 3312 ◽  
Author(s):  
Xuzhou Yan ◽  
Donghua Xu ◽  
Jianzhuang Chen ◽  
Mingming Zhang ◽  
Bingjie Hu ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Crown Ether ◽  
Supramolecular Polymer ◽  
Self Healing ◽  
Polymer Gel

scholarly journals Tough interpenetrating polymer network of silicone containing polyurethane and polystyrene with self-healing, shape memory and self-cleaning attributes

RSC Advances ◽  
2018 ◽  
Vol 8 (31) ◽  
pp. 17044-17055 ◽  
Author(s):  
Tuhin Ghosh ◽  
Niranjan Karak
Keyword(s):  
Shape Memory ◽  
Polymer Network ◽  
Interpenetrating Polymer Network ◽  
Self Healing ◽  
Self Cleaning

A tough IPN of silicone containing polyurethane and polystyrene with smart attributes like self-healing, shape memory and self-cleaning is reported.

Multi-stimuli-responsive supramolecular gel constructed by pillar[5]arene-based pseudorotaxanes for efficient detection and separation of multi-analytes in aqueous solution

Soft Matter ◽  
2018 ◽  
Vol 14 (42) ◽  
pp. 8529-8536 ◽  
Author(s):  
You-Ming Zhang ◽  
Yong-Fu Li ◽  
Hu Fang ◽  
Jun-Xia He ◽  
Bi-Rong Yong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Polymer Network ◽  
Water Soluble ◽  
Supramolecular Polymer ◽  
Stimuli Responsive ◽  
Supramolecular Gel ◽  
Efficient Detection ◽  
Detection And Separation

A novel pseudorotaxanes-type crosslinker of a supramolecular polymer network (WP5-PN) was constructed based on water-soluble pillar[5]arene (WP5) and naphthalene dimethylamine derivative (PN) via host-guest interactions.

Interpenetrated polymer network with modified chitosan in composition and self-healing properties

2019 ◽  
Vol 132 ◽  
pp. 374-384 ◽  
Author(s):  
Alina Gabriela Rusu ◽  
Aurica P. Chiriac ◽  
Loredana Elena Nita ◽  
Maria Bercea ◽  
Nita Tudorachi ◽  
...  
Keyword(s):  
Polymer Network ◽  
Self Healing ◽  
Modified Chitosan

scholarly journals Self-Healable Supramolecular Vanadium Pentoxide Reinforced Polydimethylsiloxane-Graft-Polyurethane Composites

Polymers ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 41 ◽  
Author(s):  
Ali Berkem ◽  
Ahmet Capoglu ◽  
Turgut Nugay ◽  
Erol Sancaktar ◽  
Ilke Anac
Keyword(s):  
Tensile Strength ◽  
Vanadium Pentoxide ◽  
Coupling Reaction ◽  
Optical Microscope ◽  
Mechanical Tests ◽  
Healing Time ◽  
The Self ◽  
Supramolecular Polymer ◽  
Self Healing ◽  
Healing Efficiency

The self-healing ability can be imparted to the polymers by different mechanisms. In this study, self-healing polydimethylsiloxane-graft-polyurethane (PDMS-g-PUR)/Vanadium pentoxide (V2O5) nanofiber supramolecular polymer composites based on a reversible hydrogen bonding mechanism are prepared. V2O5 nanofibers are synthesized via colloidal route and characterized by XRD, SEM, EDX, and TEM techniques. In order to prepare PDMS-g-PUR, linear aliphatic PUR having one –COOH functional group (PUR-COOH) is synthesized and grafted onto aminopropyl functionalized PDMS by EDC/HCl coupling reaction. PUR-COOH and PDMS-g-PUR are characterized by 1H NMR, FTIR. PDMS-g-PUR/V2O5 nanofiber composites are prepared and characterized by DSC/TGA, FTIR, and tensile tests. The self-healing ability of PDMS-graft-PUR and composites are determined by mechanical tests and optical microscope. Tensile strength data obtained from mechanical tests show that healing efficiencies of PDMS-g-PUR increase with healing time and reach 85.4 ± 1.2 % after waiting 120 min at 50 °C. The addition of V2O5 nanofibers enhances the mechanical properties and healing efficiency of the PDMS-g-PUR. An increase of healing efficiency and max tensile strength from 85.4 ± 1.2% to 95.3 ± 0.4% and 113.08 ± 5.24 kPa to 1443.40 ± 8.96 kPa is observed after the addition of 10 wt % V2O5 nanofiber into the polymer.

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