K5 Polimer Alam dan Industri.pptx

K5 Polimer Alam dan Industri.pptx - TEKNOLOGI BAHAN DAN...

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TEKNIK KIMIA - FAKULTAS TEKNIK UNSERA Polimer Alam dan Polimer Industri Oleh: Tiara Pradita, ST., MSc TEKNOLOGI BAHAN DAN KOROSI
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Berdasarkan asal usul, polimer dibagi menjadi 2 1. Polimer alam 2. Polimer Industri (sintetis)
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Contoh polimer alam
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Tumbuhan : karet alam (lateks) 1,4 cis-isopropena Kayu - Selulosa Hewan : wool, sutera
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Polimer sintesis (polimer industri) Dibuat dengan sinthesis dari senyawa- senyawa kimia ataupun dari sinthesis dari polimer alam. Contoh : serat , karet (elastomer) , plastik.
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SERAT (FIBER) Polimer yg mempunyai kekuatan tinggi & stabilitas panas yg baik Serat sinthesis diklasifikasikan menjadi 1. Selulosa Yaitu serat yang dibuat dari hasil pengolahan selulosa. Biasa dikenal dg istilah rayon 2. Non-selulosa Yaitu serat yang bahannya di sintesis dg reaksi kimia. Contoh : Serat poliester (tekstil) Nilon (tekstil)
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Karet sinthesis (elastomer) Merupakan polimer yg mempunyai resiliensi (daya pegas) Banyak digunakan dalam industri ban Proses pembuatan ban: Lateks dari pohon karet dipanaskan dengan belerang sehingga membentuk ikatan silang antara rantai-rantai hidrokarbon di dalam lateks cair.
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