Polyether block amide: Difference between revisions

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{{Short description|Thermoplastic elastomer}}

{{one source|date=July 2020}}

'''Polyether block amide''' or '''PEBA''' is a [[thermoplastic elastomer]] (TPE). It is known under the tradename of PEBAX® ([[Arkema]]) and VESTAMID® E ([[Evonik Industries]]). It is a [[block copolymer]] obtained by [[polycondensation]] of a carboxylic acid [[polyamide]] ([[Nylon 6|PA6]], [[Polyamide 11|PA11]], [[polyamide 12|PA12]]) with an [[Alcohol (chemistry)|alcohol]] termination polyether ([[Polytetramethylene glycol]] PTMG), [[Polyethylene glycol|PEG]]). The general chemical structure is:

:[[Hydrogen|H]][[Oxygen|O]] - ([[Carbon|C]][[Oxygen|O]] - '''[[Polyamide|PA]]''' - [[Carbon|C]][[Oxygen|O]] - [[Oxygen|O]] - '''[[Polyether|PE]]''' - [[Oxygen|O]])_n - [[Hydrogen|H]]

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| Density

| g/cm³³

| 1.00 - 1.03

|-

| Water absorption at equilibrium (23  °C, 50% RH)

| %

| 0.4–0.7

|-

| Water absorption at saturation (23  °C, 24H in water)

| %

| 0.9–1.2

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|-

| Impact resistance (Charpy, notched)

| kJ/m²²

| No break

|-

| Abrasion resistance (10 N/40 m)

| mm³³

| 55–130

|-

| Surface resistivity

| Ω/sq

| 10⁹–10¹³

|-

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[[Category:Copolymers]]

[[Category:Polymers]]

[[Category:Thermoplastic elastomers]]