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</html><description>Sa formule chimique est (C2H4)n, c&#x2019;est-&#xE0;-dire qu&#x2019;il s&#x2019;agit d&#x2019;une substance &#xE0; base de carbone et hydrog&#xE8;ne. La mousse poly&#xE9;thyl&#xE8;ne est une mati&#xE8;re solide &#xE0; structure cellulaire ferm&#xE9;e et son moussage est effectu&#xE9; au gaz. Chaque bulle de gaz est s&#xE9;par&#xE9;e par une couche de mati&#xE8;re, formant ainsi des cellules. La mousse de poly&#xE9;thyl&#xE8;ne est constitu&#xE9;e de l&#x2019;ensemble de ces cellules.</description></oembed>
