scholarly journals Fabrication of Self-Healable Magnetic Nanocomposites via Diels−Alder Click Chemistry

2019 ◽  
Vol 9 (3) ◽  
pp. 506 ◽  
Author(s):  
Yi-Huan Lee ◽  
Yan-Nian Zhuang ◽  
Hsin-Ta Wang ◽  
Ming-Feng Wei ◽  
Wen-Chi Ko ◽  
...  
Keyword(s):  
Hybrid System ◽  
Glycidyl Ether ◽  
Magnetic Behavior ◽  
Diels Alder ◽  
Hybrid Network ◽  
Organic Polymer ◽  
Self Healing ◽  
Multiwalled Carbon ◽  
Novel Approach ◽  
Superparamagnetic Properties

In this study, we report a novel approach to fabricate an organic/inorganic magnetic hybrid system capable of self-healing, wherein a polycaprolactone-poly(furfuryl glycidyl ether) copolymer (PCLF) serving as the structure template was first synthesized, followed by the incorporation of iron oxide nanoparticles-decorated multiwalled carbon nanotubes (IONPs-MWCNTs) and 1,1′-(methylenedi-4,1-phenylene)bismaleimide (BMI) into the polymer matrix to form a covalently crosslinked hybrid network via a Diels−Alder (DA) reaction. For this system, the reactive combination of diene and dienophile from furan/maleimide, MWCNT/furan, and MWCNT/maleimide could facilely induce multiple DA reactions that imparted a versatile route to efficiently introduce IONPs-MWCNTs into the organic polymer hosts, resulting in a uniform distribution of IONPs-MWCNTs that led to a hybrid system with superparamagnetic properties. Beside the magnetic behavior, such material synergistically exhibited a superior ability for healing scratch defects via a retro-DA reaction. Therefore, this crosslinked PCLF/BMI/IONPs-MWCNTs hybrid system which exhibits multifunctional properties including superparamagnetic behavior and self-repairability can serve as an intelligent material for developing advanced electromagnetic applications.

scholarly journals Development of Self-Healable Organic/Inorganic Hybrid Materials Containing a Biobased Copolymer via Diels–Alder Chemistry and Their Application in Electromagnetic Interference Shielding

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1755
Author(s):  
Yi-Huan Lee ◽  
Wen-Chi Ko ◽  
Yan-Nian Zhuang ◽  
Lu-Ying Wang ◽  
Tao-Wei Yu ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Hybrid System ◽  
Electromagnetic Interference ◽  
Diels Alder ◽  
Structural Defects ◽  
Material System ◽  
Self Healing ◽  
Electromagnetic Interference Shielding ◽  
Band Frequency ◽  
Inorganic Hybrid

In this study, a novel biobased poly(ethylene brassylate)-poly(furfuryl glycidyl ether) copolymer (PEBF) copolymer was synthesized and applied as a structure-directing template to incorporate graphene and 1,1′-(methylenedi-4,1-phenylene)bismaleimide (BMI) to fabricate a series of self-healing organic/inorganic hybrid materials. This ternary material system provided different types of diene/dienophile pairs from the furan/maleimide, graphene/furan, and graphene/maleimide combinations to build a crosslinked network via multiple Diels–Alder (DA) reactions and synergistically co-assembled graphene sheets into the polymeric matrix with a uniform dispersibility. The PEBF/graphene/BMI hybrid system possessed an efficient self-repairability for healing structural defects and an electromagnetic interference shielding ability in the Ku-band frequency range. We believe that the development of the biobased self-healing hybrid system provides a promising direction for the creation of a new class of materials with the advantages of environmental friendliness as well as durability, and shows potential for use in advanced electromagnetic applications.

Preparation and properties of self-healing polyether amines based on Diels–Alder reversible covalent bonds

2018 ◽  
Vol 31 (1) ◽  
pp. 51-62 ◽  
Author(s):  
Xiaofei Wang ◽  
Kaifeng Zhao ◽  
Xiaowen Huang ◽  
Xiaoyue Ma ◽  
Yanyan Wei
Keyword(s):  
Glycidyl Ether ◽  
Tensile Tests ◽  
Optical Microscope ◽  
Mechanical Analysis ◽  
Diels Alder ◽  
Proton Nuclear Magnetic Resonance ◽  
Self Healing ◽  
Covalent Bonds ◽  
Reversible Covalent ◽  
Automotive Coating

Over time, automotive coating is bound to be damaged; therefore, it is necessary to give the coating a self-healing ability to make its performance even better. First, furfuryl glycidyl ether (FGE) was synthesized by epichlorohydrin and furfuryl alcohol. Then, furanyl-terminated resin FGE-T5000 was synthesized by polyether amine T5000 and FGE. Finally, 4,4′-diphenylmethane bismaleimide (BDM) was added to FGE-T5000 as a cross-linking agent to form a resin named FGE-T5000-BDM which has Diels–Alder (DA) bonds. The products were characterized by Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance, differential scanning calorimeter, dynamic mechanical analysis, thermogravimetric analysis, optical microscope, tensile tests, and other tests. The results showed that FGE-T5000-BDM demonstrated thermally reversible self-healing property from 50°C to 150°C, and that the best temperature of the DA reaction was 80°C. The gel content of FGE-T5000-BDM was 98%. Also, the glass transition temperature and the initial temperature of the Retro-DA (r-DA) reaction were −58°C and 88°C, respectively. Moreover, the self-healing efficiency of FGE-T5000-BDM was up to 88% after staying at 80°C for 12 h. The innovation shown in this article was that the reversible covalent bonds (DA) were combined with the polyether amines, which produced the characteristics of self-healing. Its unique self-healing properties are useful in some areas, such as automobile coatings and other materials.

Self-Healing Hydrophobic POSS-functionalized Fluorinated Copolymer via RAFT Polymerization and dynamic Diels-Alder Reaction

2021 ◽  
Author(s):  
Siva Ponnupandian ◽  
Prantik Mondal ◽  
Thomas Becker ◽  
Richard Hoogenboom ◽  
Andrew B Lowe ◽  
...  
Keyword(s):  
Chain Transfer ◽  
Raft Polymerization ◽  
Alder Reaction ◽  
Diels Alder ◽  
Self Healing ◽  
Diels Alder Reaction ◽  
Reversible Addition

This investigation reports the preparation of a tailor-made copolymer of furfuryl methacrylate (FMA) and trifluoroethyl methacrylate (TFEMA) via reversible addition-fragmentation chain transfer (RAFT) polymerization. The furfuryl groups of the copolymer...

Self-healing poly(siloxane-urethane) elastomers with remoldability, shape memory and biocompatibility

2016 ◽  
Vol 7 (47) ◽  
pp. 7278-7286 ◽  
Author(s):  
Jian Zhao ◽  
Rui Xu ◽  
Gaoxing Luo ◽  
Jun Wu ◽  
Hesheng Xia
Keyword(s):  
Mechanical Property ◽  
Shape Memory ◽  
Microphase Separation ◽  
Diels Alder ◽  
Good Mechanical Property ◽  
Self Healing ◽  
Healing Efficiency ◽  
Good Biocompatibility

The poly(siloxane-urethane) elastomers with microphase separation structure and Diels–Alder bonds show high healing efficiency, good mechanical property and good biocompatibility.

Synthesis and properties of strong and tough Diels–Alder self-healing crosslinked polyamides

2021 ◽  
Vol 28 (4) ◽  
Author(s):  
Jinnan Zhao ◽  
Shuo Chen ◽  
Jingbo Zhao ◽  
Zhiyuan Zhang ◽  
Junying Zhang
Keyword(s):  
Diels Alder ◽  
Self Healing

Fast‐reprocessing, Post‐adjustable, Self‐healing Covalent Adaptable Networks with Schiff base and Diels‐Alder Adduct

2022 ◽  
pp. 2100777
Author(s):  
Xiwei Xu ◽  
Songqi Ma ◽  
Sheng Wang ◽  
Binbo Wang ◽  
Hongzhi Feng ◽  
...  
Keyword(s):  
Schiff Base ◽  
Diels Alder ◽  
Self Healing ◽  
Alder Adduct

Self-healable Functional Polymers based on Diels-Alder ‘Click Chemistry’ Involving Substituted Furan and Triazolinedione Derivatives; A Simple and Very Fast Approach

2021 ◽  
Author(s):  
Prantik Mondal ◽  
Gourhari Jana ◽  
Tuhin Subhra Pal ◽  
Pratim K. Chattaraj ◽  
Nikhil K Singha
Keyword(s):  
Click Chemistry ◽  
Materials Science ◽  
Functional Polymers ◽  
Diels Alder ◽  
Polymer Materials ◽  
Self Healing ◽  
Natural Phenomena ◽  
Science And Engineering ◽  
Fast Approach ◽  
Materials Science And Engineering

Nowadays, the design of functional polymer materials that can mimic natural phenomena, e.g., self-healing of skin cuts, has got a tremendous interest in materials science and engineering. Recently, 1,2,4-triazoline-3,5-dione (TAD)...

scholarly journals A review on Diels-Alder based self-healing polymer composites

2018 ◽  
Vol 377 ◽  
pp. 012007 ◽  
Author(s):  
N I Khan ◽  
S Halder ◽  
S B Gunjan ◽  
T Prasad
Keyword(s):  
Polymer Composites ◽  
Diels Alder ◽  
Self Healing
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