Control of cationic epoxy polymerization by supramolecular initiation

Vidil, Thomas; Tournilhac, François; Leibler, Ludwik

doi:10.1039/c2py21140h

Cited by 12 publications

(36 citation statements)

References 55 publications

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“…2). Interestingly, varying temperature allows to modulate the strength of the host-guest complex [56] that, because of the cooperative nature of the binding, permits full on-off switching of the polymer chain chirality [57,58].…”

Section: Modulating Polymeric Architectures By Supramolecular Interacmentioning

confidence: 99%

Supramolecular control over thermoresponsive polymers

2016

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Thermoresponsive polymers facilitate the development of a wide range of applications in multiple areas spanning from construction or water management to lab-on-a-chip technologies and biomedical sciences. The combination of thermoresponsive polymers with supramolecular chemistry, inspired by the molecular mechanisms behind natural systems, is resulting in adaptive and smart materials with unprecedented properties. This work reviews the past advances on the combination of this young field of research with polymer chemistry that is enabling a high level of control on polymer architecture and stimuli-responsiveness in solution. We will discuss how such polymer systems are able to store thermal information, respond to multiple stimuli in a reversible manner, or adapt their morphology on demand, all powered by the synergy between polymer chemistry and supramolecular chemistry

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Section: Modulating Polymeric Architectures By Supramolecular Interacmentioning

confidence: 99%

Supramolecular control over thermoresponsive polymers

2016

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“…They can complex cationic species and keep under control a reaction which is normally prone to runaway. In section 3.3.3, it was shown that this strategy permits to control the initiation stage when the chelating ligand is the selective 18-crown-6 ether [283,366,372]. Concurrently, several authors have shown that less selective ligands may induce a decrease of the polymerization rate with similar amplitude as alcohols.…”

Section: Combination Of Transfers and Supramolecular Complexationmentioning

confidence: 95%

“…As temperature increases, the complex dissociates with release of a Brønsted acid, HBF 4 , which is able to trigger the cationic ROP of an epoxy monomer. [366], Copyright 2013. Reproduced with permission from the Royal Society of Chemistry.…”

Section: Page 69 Of 163mentioning

confidence: 96%

Section: Page 69 Of 163mentioning

confidence: 96%

“…proposed the concept of supramolecular initiator [366]. The underlying idea of this approach is to shield the ammonium moiety of the tetrafluoroborate salt, BF 4 -−RNH 3 + , that acts as the true initiator in standard BF 3 -amine cured epoxy resins and to be able to deprotect it and initiate the cationic polymerization for low curing temperatures.…”

Section: Supramolecular Control Of the Initiationmentioning

confidence: 99%

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Control of reactions and network structures of epoxy thermosets

Vidil¹,

Tournilhac²,

Musso

et al. 2016

Progress in Polymer Science

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295

252

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Recent advances in macromolecular chemistry have revolutionized the way we perceive the synthesis of polymers. Polymerization, to be modern, must be "controlled", which usually means capable of producing macromolecules of well-defined structure. The purpose of this review is to examine how the chemistry of epoxy resins, an almost century-old chemistry, is also involved in this movement. Epoxy resins are characterized by both the flexibility of implementation and the qualities of the polymers obtained. Key materials in health-, mobility-and energy related technologies, these resins are heavily present in high-performance composites, electronic boards, adhesives and coatings. Currently, a large number of resins and hardeners are available on the market or described in the literature and an interesting point is that almost any combination of the two is possible. Common to all these recipes and processes is that a liquid (or soluble) resin at some point becomes insoluble and solid. It is very important to know how to manage this transition, physically known as the gel point, as it is the point after which the shape of the object is irreversibly set. Taking into account the variety of epoxy polymerization processespolyaddition, anionic or cationic polymerization-we detail a number of methods to program the occurrence of the gel point and how this type of control affects the structure of the growing network.

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Ionic and Coordination Ring‐Opening Polymerization

Penczek¹,

Biela²,

Cypryk³

et al. 2022

Macromolecular Engineering

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This article provides the up‐to‐date and comprehensive review (over 700 citations) of all the important subjects of the ring‐opening polymerization (ROP) methods of polymers syntheses. This is the method of synthesis of several important classes of polymers that cannot be prepared in a different way (e.g., polyethers). It also complements known methods of polycondensation and ROP often is the method of choice. ROP is particularly important in syntheses of the biodegradable polymers‐polylactide and poly(ε‐caprolactone), discussed in details. Applications of these polymers, as well as polysiloxanes in biomedical applications are irreplaceable in the modern medicine. Either as bulk polymers or as nano‐ and microspheres, described In this article separately. There are sections in the present version that were not presented in the previous editions. This is description of polyoxazolines, polymers with phosphorus atoms in the chains, as well as mentioned above polysiloxanes an microspheres. We introduced also section describing novel analytical methods, particularly useful in studies of polymers with various architectures (star shape, multibranched etc.). Besides the synthetic aspects of ROP, this article describes thermodynamics and kinetic features of the living/controlled polymerizations, particularly by activated monomer mechanism and importance of dormant polymers in precision syntheses of desired structures.

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Control of cationic epoxy polymerization by supramolecular initiation

Cited by 12 publications

References 55 publications

Supramolecular control over thermoresponsive polymers

Supramolecular control over thermoresponsive polymers

Control of reactions and network structures of epoxy thermosets

Ionic and Coordination Ring‐Opening Polymerization

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