Thermally reversible covalently bonded linear polymers prepared from a dihalide monomer and a salt of dicyclopentadiene dicarboxylic acid

Chen, Xiaonong; Ruckenstein, Eli

doi:10.1002/(sici)1099-0518(20000501)38:9<1662::aid-pola32>3.0.co;2-#

Cited by 10 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reversible crosslinked brominated butyl rubber (BIIR) was used as a model, which was crosslinked by sodium dicyclopentadiene dicarboxylate through esterification, as shown in Scheme 1. Such esterification crosslinking of halogenated polymer was intensively investigated previously [11][12][13][14]. The results presented in the current paper indicate that the torque measurement provides a simple, sensitive and reliable method to acquire information on the thermo-reversibility of crosslinked polymer and the efficiency of antioxidant to maintain reversibility.…”

Section: Introductionmentioning

confidence: 70%

“…Both of these polymers showed thermoreversible crosslinking behavior due to thermo-reversible dimerization of the side CPD groups. Following Kennedy's work, thermo-reversible crosslinked polyphosphazene [10] and many other reversible crosslinked polymeric elastomers were reported in the literature [11][12][13][14][15]. DCPD derivative was also employed in making thermally re-mendable polyester [5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of thermo-reversibility of polymer crosslinked by reversible covalent bonds through torque measurement

El-Hebshi

Xia

et al. 2013

Polymer Testing

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Investigation of thermo-reversibility of polymer crosslinked by reversible covalent bonds through torque measurement

El-Hebshi

Xia

et al. 2013

Polymer Testing

Self Cite

View full text Add to dashboard Cite

“…CP derivatives have been employed as cross-linkers for a number of polymers, particularly chlorine-containing polymers, and several patents have been issued. Poly(vinyl chloride) (PVC), polychloroprene, polyepichlorohydrin (PECH), and polychloromethylstyrene (PCMS) have been cross-linked by reacting them with cyclopentadienyl sodium or lithium salts [39][40][41] or dicyclopentadiene dicarboxylic acid (Thiele's acid); [42][43][44] isobutylene-isoprene and ethylene-propylene rubbers have been cross-linked by reacting them with dimethylcyclopentadienylaluminium; 45,46 and poly(dichlorophosphazene) has been cross-linked by reaction with sodium cyclopentadienylethoxide or its dimer. 47 DCP derivatives have Fig.…”

Section: Covalently Bound Systemsmentioning

confidence: 99%

Mendable polymers

2008

View full text Add to dashboard Cite

“…Reversible reactions are presently receiving increasing attention and provide a means for developing new materials exhibiting unusual features. Recent covalent polymers investigated for their reversible properties have included entities based on various reactions, such as transesterification (12)(13)(14)(15), transetherification (16), Diels-Alder reaction (17,18), [2 ϩ 2] photodimerization (19), radical reaction (20), and boronate ester formation (21).…”

Section: Reversibility Exchange and Diversitymentioning

confidence: 99%

Dynamers: Polyacylhydrazone reversible covalent polymers, component exchange, and constitutional diversity

Skene

Lehn

2004

Proc. Natl. Acad. Sci. U.S.A.

301

195

View full text Add to dashboard Cite

Component exchange in reversible polymers allows the generation of dynamic constitutional diversity. The polycondensation of dihydrazides with dialdehydes generates polyacylhydrazones, to which the acylhydrazone functionality formed confers both hydrogen-bonding and reversibility features through the amide and imine groups, respectively. Polyacylhydrazones are thus dynamic polyamides. They are able to reversibly exchange either one or both of their repeating monomer units in the presence of different monomers, thus presenting constitutional dynamic diversity. The polymers subjected to monomer exchange͞interchange may be brought to exhibit physical properties vastly different from those of the original polymer. The principle may be extended to other important classes of polymers, giving access, for instance, to dynamic polyureas or polycarbamates. These reversible polymers are therefore able to incorporate, decorporate, or reshuffle their constituting monomers, namely in response to environmental physical or chemical factors, an adaptability feature central to constitutional dynamic chemistry.constitutional dynamic chemistry ͉ reversible polymers ͉ dynamic materials B lending supramolecular chemistry with materials science defines a field of supramolecular materials that rests on the explicit implementation of intermolecular interactions in the design and synthesis of novel materials presenting novel properties.Because supramolecular chemistry is by nature a dynamic chemistry in view of the lability of the noncovalent interactions connecting the molecular components of a supramolecular entity, supramolecular materials are by nature dynamic materials (1-3).Importing such dynamic features, characteristic of supramolecular chemistry, into molecular chemistry implies looking at molecules as labile entities, in contrast to the usual longing for stability, thus opening novel perspectives to covalent chemistry. It requires searching for reversible reactions that allow the making and breaking of covalent bonds, preferentially under mild conditions. These developments are embodied in the recent emergence of dynamic combinatorial chemistry as a powerful means for generating dynamic, effector-responsive molecular diversity (2, 4).Thus, on both the supramolecular and molecular levels, dynamic materials may be defined as materials whose constituents are linked through reversible connections (noncovalent or covalent) and are able to undergo continuous reorganization through assembly͞disassembly processes, incorporation, extrusion, or reshuffling of components in a given set of conditions, usually under thermodynamic control (1, 2).The resulting constitutional plasticity defines a constitutional dynamic chemistry (3) encompassing both covalent molecular (2, 5) and noncovalent supramolecular entities.Focusing on a specific class of materials, polymers, the pathway leads from supramolecular polymers (6-8) to dynamic covalent polymers (see ref. 5, pp. 902-915). One may designate under the term, Dynamers (7), both the polymers that...

show abstract

Thermally reversible covalently bonded linear polymers prepared from a dihalide monomer and a salt of dicyclopentadiene dicarboxylic acid

Cited by 10 publications

References 26 publications

Investigation of thermo-reversibility of polymer crosslinked by reversible covalent bonds through torque measurement

Investigation of thermo-reversibility of polymer crosslinked by reversible covalent bonds through torque measurement

Mendable polymers

Dynamers: Polyacylhydrazone reversible covalent polymers, component exchange, and constitutional diversity

Contact Info

Product

Resources

About