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Journal : POSITRON

Perluasan Kinerja Akustik Limbah Kayu Batang Kelapa Sawit Termodifikasi Bahan Formaldehida Manik, Tetti Novalina; Shaliha, Shaliha; Siregar, Simon Sadok; Santoso, Tanto Budi; Yahya, Iwan; Mashuri, Mashuri; Zainuri, Muhammad; Darminto, Darminto
POSITRON Vol 12, No 2 (2022): Vol. 12 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (442.893 KB) | DOI: 10.26418/positron.v12i2.55963

Abstract

Chemical modifications for waste oil palm trunks had carried out as acoustic material. This modification was conducted in two stages. Firstly, formalization with formaldehyde solution and secondly is impregnation with melamine-formaldehyde resin. Formalization was conducted in alkaline condition (pH 10) for 3 days and 5 days. Impregnation was carried out under pressure 3 bar and 5 bar and held for an hour. For completed these modification, the samples was cured at 120oC for 10 minutes and then dried at (103±2)oC to reached moisture content of less than 6%. This modification has changed the chemical structure and the morphology of wood, as shown by the FTIR and SEM results. The samples became denser, stronger and more rigid. Furthermore, the mechanical and physical properties of modified wood are also increasing. The absorption coefficient decreases with increasing formalization time and impregnation pressure. Based on trend of absorption coefficient, BKS wood can be applicated as resonant absorber with work class from A to class B and D.
Co-Authors A.B.U, M. Andriyan Rengga Abdillah, Achlish Abdul Hadi Abdul Kamaruddin Abdul Latif Abdul Rivai Aditiya, Popi Afdal Afdal, Afdal Afrizal, John Agus Rubiyanto Agus Sugandha Agus Wayan Yulianto Agussatriana Ahmad Muklason Ainal Mardhiah, Ainal Mardhiah Akbar Eisenring, Moh. Abraham Al Husaini, Muhd Arief Al Husaini, Muhd. Arief Al-Kadafi, Muammar Alfianti Tapala, Alma Ali Alhadar Amidi Amidi, Amidi Amin Pujiati Amin Suyitno Aminah Aminah Aminah Suriaman Amozhita, Kintan Khana Ana Febrianti AD Anarkis, Bunga Tirai Anas Tahir Andania, Ana Andi Amitya Resty Dwiyanti Andi Arham Adam Andi Asdar Anggraeni, Rima Anggreni, Afrillia Anintya, Yolanda Astrid Anita Syam Anugrawati, Anugrawati Aranda, Viren Lolita Arief Agoestanto Arief Setiawan Arif Hidayat Ariska, Ariska Arpiani, Made Rani Asferizal, Ferial Ashsubli, M. Assyfa, Nadia Salma Nazwa Astuti, Dwi Putri Puji Astuti, Fira Athira, Dini Ayudia Hardiyani Kiranaratri Azahra, Sarmila Aziz, Ahmad Rijal Baehaqi Bagusta, Deri Baharsyah, Bastomi Ballani, Simran Bambang Sampurno, Bambang Bambang Setiawan Bambang Wahyu Susanto Barnawi, Barnawi Betharina, Nudyan Budi Budi Cahyono, Yohana Chatarina Umbul Wahyuni Chotim, Moch Dani Setiawan Darianto, Darianto Darmawan Darmawan Darmawan, Andri Darminto . Dewi Hastuty Dewi, Anjar Kusuma Dito, Aliffia Putri Djoko Susanto Dudung Hidayat Dukhi Safaraz, Muhammad Dwijanto Dwijanto, Dwijanto E. Sulastri Eisenring, Moh. 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