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POL MEROS

BREVE HISTRICO. Primeiro contato: historicamente egpcio e romanos graxas e resinas;Sec XVI: espanhis e portugueses ltex extraido da Havea Brasiliensis futuramente chamada de borracha;1839 Charles Goodyear vulcanizao da borracha;1846 Christian Schnbien nitrocelulose (1 polmero

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POL MEROS

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