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Rubber elasticity — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Rubber_elasticity
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-07T15:44:21.251Z
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Rubber elasticity — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Rubber_elasticity (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_dfe158a153da (Metraipolis archive dc_dfe158a153da, sha256 ccf935136d3e9e72b8d226cc12791045ae57eeea6de7bc89a23868fe2c54161d)

BibTeX

@misc{dcdfe158a153da,
  title = {Rubber elasticity — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Rubber_elasticity},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_dfe158a153da; sha256 ccf935136d3e9e72b8d226cc12791045ae57eeea6de7bc89a23868fe2c54161d},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Rubber_elasticity. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Rubber elasticity is the ability of solid rubber to be stretched up to a factor of 10 from its original length, and return to close to its original length upon release. This process can be repeated many times with no apparent degradation to the rubber. Rubber, like all materials, consists of molecules. Rubber's elasticity is produced by molecular processes that occur due to its molecular structure. Rubber's molecules are polymers, or large, chain-like molecules. Polymers are produced by a process called polymerization. This process builds polymers up by sequentially adding short molecular backbone units to the chain through chemical reactions. A rubber polymer follows a random winding path in three dimensions, intermingling with many other rubber polymers. Polyisoprene from natural rubber, is extracted from plants as a fluid colloid and then solidified in a process called Vulcanization. During the process, a small amount of a cross-linking molecule, usually sulfur, is added. When heat is applied, sections of rubber's polymer chains chemically bond to the cross-linking molecule. These bonds cause rubber polymers to become cross-linked, or joined to each other by the bonds made with the cross-linking molecules. Because each rubber polymer is very long, each one participates in many crosslinks with many other rubber molecules, forming a continuous network. The resulting molecular structure demonstrates elasticity, making rubber a member of the class of elastic polymers called elastomers.

Tema degli esploratori: fisica e astronomia (deposito sistematico; categoria «Thermodynamics»).
Fonte: Wikipedia in inglese, voce «Rubber elasticity» — https://en.wikipedia.org/wiki/Rubber_elasticity
Wikidata Q904453 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q904453
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Rubber_elasticity?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1365856560, consultata il 2026-10-07T15:16:39.904Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 749f180a7b6fd1531fddb1c41aff4192d4fe6145aa2744adae318d4f134b7de5