Mechanical model of globular transition in polymers

Simon Tricard, Robert F. Shepherd, Claudiu A. Stan, Phillip W. Snyder, Rebecca Cademartiri, Danny Zhu, Igor S. Aranson, Eugene I. Shakhnovich, George M. Whitesides

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In complex, multicomponent systems, polymers often undergo phase transitions between distinct conformations. This paper reports a millimeter-scale granular model of coil-to-globule transitions: one "polymer" chain - a cylinders-on-a-string "pearl necklace" - and many spheres, all shaken on a horizontal surface. It is possible to describe the behavior of this granular system by using formalisms generally used in statistical physics of polymers. Two sets of experiments allowed the observation of first- and second-order coil-to-globule transitions. The model shows that the competition between long- and shortrange interactions leads to a first-order transition. Well-designed granular system represents another kind of approach to the study of polymer phase transitions and might inspire future designs of polymer-like mesoscale systems.

Original languageEnglish (US)
Pages (from-to)37-41
Number of pages5
JournalChemPlusChem
Volume80
Issue number1
DOIs
StatePublished - Jan 2015

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Polymers
Phase transitions
Conformations
Large scale systems
Physics
Experiments

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Tricard, S., Shepherd, R. F., Stan, C. A., Snyder, P. W., Cademartiri, R., Zhu, D., ... Whitesides, G. M. (2015). Mechanical model of globular transition in polymers. ChemPlusChem, 80(1), 37-41. https://doi.org/10.1002/cplu.201402203
Tricard, Simon ; Shepherd, Robert F. ; Stan, Claudiu A. ; Snyder, Phillip W. ; Cademartiri, Rebecca ; Zhu, Danny ; Aranson, Igor S. ; Shakhnovich, Eugene I. ; Whitesides, George M. / Mechanical model of globular transition in polymers. In: ChemPlusChem. 2015 ; Vol. 80, No. 1. pp. 37-41.
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Tricard, S, Shepherd, RF, Stan, CA, Snyder, PW, Cademartiri, R, Zhu, D, Aranson, IS, Shakhnovich, EI & Whitesides, GM 2015, 'Mechanical model of globular transition in polymers', ChemPlusChem, vol. 80, no. 1, pp. 37-41. https://doi.org/10.1002/cplu.201402203

Mechanical model of globular transition in polymers. / Tricard, Simon; Shepherd, Robert F.; Stan, Claudiu A.; Snyder, Phillip W.; Cademartiri, Rebecca; Zhu, Danny; Aranson, Igor S.; Shakhnovich, Eugene I.; Whitesides, George M.

In: ChemPlusChem, Vol. 80, No. 1, 01.2015, p. 37-41.

Research output: Contribution to journalArticle

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AU - Shepherd, Robert F.

AU - Stan, Claudiu A.

AU - Snyder, Phillip W.

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AU - Zhu, Danny

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AU - Whitesides, George M.

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Tricard S, Shepherd RF, Stan CA, Snyder PW, Cademartiri R, Zhu D et al. Mechanical model of globular transition in polymers. ChemPlusChem. 2015 Jan;80(1):37-41. https://doi.org/10.1002/cplu.201402203