scholarly journals Reversible supramolecular adhesives formed by metallacycle-crosslinked polymer networks via amino‑yne click reaction

Giant ◽  
2020 ◽  
Vol 4 ◽  
pp. 100034
Author(s):  
Kai Gao ◽  
Zeyuan Zhang ◽  
Lingzhi Ma ◽  
Long Chen ◽  
Xingxing Chen ◽  
...  
Keyword(s):  
Click Reaction ◽  
Polymer Networks ◽  
Crosslinked Polymer

scholarly journals Temperature-modulated DSC study of network formation via Thiol-Isocyanate “click” reaction

2016 ◽  
Vol 19 (2) ◽  
pp. 78-87
Author(s):  
Ha Tran Nguyen ◽  
Thu Thi Le Nguyen ◽  
Thang Van Le ◽  
Lam Le
Keyword(s):  
Network Formation ◽  
Click Reaction ◽  
Polymer Networks ◽  
Polymer Materials ◽  
Modulated Dsc ◽  
Scanning Calorimetry ◽  
Modulated Differential Scanning Calorimetry ◽  
Crosslinked Polymer ◽  
Temperature Modulated Dsc ◽  
Influence Of Temperature On

The thiol-isocyanate chemistry was used to create crosslinked polymer networks without the use of solvent and catalyst. The preliminary study of a model thiol-isocyanate reaction was performed to confirm the “efficient linking” feature of the reaction, as indicated by online FTIR method. Temperature-modulated differential scanning calorimetry (TMDSC) was used to characterize the occurrence of the networks thiol-isocyanate reaction between multifunctional reactants, the influence of temperature on the reaction rate and the glass transition temperatures of the partially and fully cured networks. The investigation could pave the way for the design and tailoring of new cross-linked polymer materials for on-demand applications.

Synthesis and Characterization of a Novel Linear Benzoxazine-Containing Polytriazole via Metal-Free Click Reaction and its Self-Crosslinking Behavior

2012 ◽  
Vol 557-559 ◽  
pp. 973-978
Author(s):  
Zhong Yi Xu ◽  
Lei Du ◽  
Li Qiang Wan ◽  
Fa Rong Huang
Keyword(s):  
Click Reaction ◽  
Decomposition Temperature ◽  
Linear Polymer ◽  
The Novel ◽  
Metal Free ◽  
Crosslinked Polymer ◽  
Degradation Behaviors ◽  
Ft Ir ◽  
Increasing Temperature

A novel linear benzoxazine-containing polytriazole was successfully synthesized via metal-free click reaction. Benefited from the advantages of click reaction, the synthesis procedure was easily and efficiently. The linear polymer could be transformed into crosslinked structure after ring-opening polymerization of oxazine induced by the increasing temperature. The FT-IR characterization verified the structure transformation between linear and crosslinked polymer. Moreover, the thermal properties and thermal degradation behaviors of linear polymer and the corresponding crosslinked polymer were studied by DSC and TGA. The novel polytriazole was proved to be a kind of thermal stable polymers with high thermal decomposition temperature (Td5over 300°C).

Unusual Mechanical Performance of Amphiphilic Crosslinked Polymer Networks

2007 ◽  
Vol 129 (3) ◽  
pp. 506-507 ◽  
Author(s):  
Jinqi Xu ◽  
David A. Bohnsack ◽  
Michael E. Mackay ◽  
Karen L. Wooley
Keyword(s):  
Mechanical Performance ◽  
Polymer Networks ◽  
Crosslinked Polymer

Mixing the immiscible: blends of dynamic polymer networks

RSC Advances ◽  
2015 ◽  
Vol 5 (23) ◽  
pp. 17514-17518 ◽  
Author(s):  
Roberto Martin ◽  
Alaitz Rekondo ◽  
Alaitz Ruiz de Luzuriaga ◽  
Antxon Santamaria ◽  
Ibon Odriozola
Keyword(s):  
Mechanical Properties ◽  
Polymer Networks ◽  
Immiscible Blends ◽  
Crosslinked Polymer ◽  
Immiscible Polymer ◽  
Superior Mechanical Properties

Is it possible to blend two immiscible polymer networks starting from their cured state? A simple thermomechanical approach permits blending two dynamically crosslinked polymer networks, to give blends with superior mechanical properties.

Novel AB crosslinked polymer networks based on 1-vinylimidazole- terminated polyurethane and poly(methyl methacrylate)

2006 ◽  
Vol 55 (11) ◽  
pp. 1209-1214 ◽  
Author(s):  
Sriram Venkataramani ◽  
Tharanikkarasu Kannan ◽  
Ganga Radhakrishnan
Keyword(s):  
Methyl Methacrylate ◽  
Polymer Networks ◽  
Poly Methyl Methacrylate ◽  
Crosslinked Polymer

scholarly journals Polybutadiene Vitrimers with Tunable Epoxy Ratios: Preparation and Properties

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4157
Author(s):  
Liqian Zhu ◽  
Li Xu ◽  
Suyun Jie ◽  
Bogeng Li
Keyword(s):  
Polymer Networks ◽  
Crosslinking Density ◽  
Side Group ◽  
Relaxation Properties ◽  
New Class ◽  
Crosslinked Polymer ◽  
Effective Exchange ◽  
Crosslinked Networks ◽  
Esterification Reactions ◽  
Group Effects

Traditional crosslinked diene rubber has excellent thermal–mechanical properties and solvent resistance, yet it is incapable of being recycled via universal molding or injecting. Vitrimers, a new class of covalently crosslinked polymer networks, can be topologically rearranged with the associative exchange mechanism, endowing them with thermoplasticity. Introducing the concept of vitrimers into crosslinked networks for the recycling of rubbers is currently an attractive research topic. However, designing tailored rubber vitrimers still remains a challenge. Herein, polybutadiene (PB) vitrimers with different structures were prepared via partial epoxidation of double bonds and ring-opening esterification reactions. Their mechanical and relaxation properties were investigated. It was found that the increasing crosslinking density can increase tensile strength and activation energy for altering the network topology. The influence of side-group effects on their relaxation properties shows that an increase in the number of epoxy groups on the polybutadiene chain can increase the chance of an effective exchange of disulfide units. This work provides a simple network design which can tune vitrimer properties via altering the crosslinking density and side-group effects.

Sign in / Sign up

Export Citation Format

Share Document