Pengaruh Panjang Serat Pinang terhadap Sifat Mekanik dan Uji Biodegradabel Komposit Polipropilena Berpati Talas
DOI:
https://doi.org/10.25077/jfu.8.2.139-145.2019Abstract
Telah dilakukan penelitian mengenai pengaruh panjang serat pinang terhadap sifat mekanik dan uji biodegradabel komposit polipropilena berpati talas. Variasi panjang serat 3 mm, 6 mm, 9 mm dan 12 mm dengan empat pengulangan, dengan fraksi volume serat yaitu 3%. Sifat mekanik dan fisik yang diujikan meliputi kuat tarik, regangan, modulus elastisitas, kuat impak, dan uji biodegradabel. Penelitian ini menggunakan metode hand lay-up. Berdasarkan hasil pengujian didapatkan nilai kuat tarik tertinggi pada panjang serat 12 mm yaitu 19,65 MPa. Nilai regangan tertinggi ditemukan pada panjang serat 9 mm yaitu 4,66 %. Nilai kuat impak tertinggi pada panjang serat 6 mm dan 12 mm yaitu 0,0083 J/mm2. Nilai modulus elastisitas tertinggi ditemukan pada panjang serat 6 mm yaitu 520,36 Mpa. Nilai uji biodegradabel rata-rata yaitu 0,0018% per hari. Pada uji spektrum FTIR sampel ukuran 5 x 1 x 1 cm dengan panjang serat 3 mm didapatkan ikatan-ikatan baru yaitu ikatan N-H, H-H, C≡C, C≡N, C=N, dan C-N.
Kata kunci: Serat pinang, pati talas, biodegradabel, kuat tarik, kuat impak, FTIR.
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Copyright (c) 2019 Sonia Yong Lisha, Alimin Mahyudin
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