What would a stretch experiment need to record?
Oxford’s polymer practical measures rubber load and extension and records the original cross-section. Nominal stress uses force divided by initial area; extension ratio uses final length divided by initial length.
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EXPLORE THE MODEL
Connectivity without a property shortcut
Inspect the structure; select a site or component for its label.
What this representation means
Markers are chain segments, not atoms. Authored crosslinks illustrate connectivity, not a specific epoxy formulation, conversion, bond chemistry or quantitative stiffness.
- Coarse inventory
- 4 chains × 16 segment markers
- Interchain links
- 0
- Chemical detail
- Segment markers do not encode atomic composition
Change the link count, then separate the unconnected chain groups. Distributed links connect all four chains from three links onward. Concentrating all six links between two chains leaves two chains separate. Equal link counts can produce different connectivity. This does not make a real connected polymer rigid: networks can deform. Chemistry, temperature, chain length and defects also matter.
What this model can establish
Markers are chain segments, not atoms. Authored crosslinks illustrate connectivity, not a specific epoxy formulation, conversion, bond chemistry or quantitative stiffness.
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MAKE THE CONNECTION
Two strips carry the same force. What additional quantity is needed to compare nominal stress?
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HISTORY THROUGH EVIDENCE
Rubber’s history is also chemistry
Practical rubber technology developed through changes in material processing as well as new polymer synthesis.
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