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All Journal Pharmaciana: Jurnal Kefarmasian Journal of Biomedicine and Translational Research PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman Indonesian Journal of Chemistry Jurnal Kesmas dan Gizi (JKG) JURNAL FARMASIMED (JFM) Jurnal Dunia Farmasi JURNAL ANALIS LABORATORIUM MEDIK Pelita Masyarakat Jurnal Indah Sains dan Klinis FORTE JOURNAL Jurnal Farmanesia Jurnal Multidisiplin Madani (MUDIMA) JURNAL KIMIA SAINTEK DAN PENDIDIKAN Jurnal ABDIMAS MUTIARA Jurnal Indah Sains dan Klinis
Ahmad Hafizullah Ritonga
Institut Kesehatan Medistra Lubuk Pakam, Deli Serdang, Indonesia
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Journal : PROSIDING SEMINAR KIMIA

 1 
ANALISIS SEKTROSKOPI INFRA MERAH DAN MORFOLOGI PADA KOMPOSIT POLIETILENA/KARET ALAM SIKLIS/PRECIPITATED CALCIUM CARBONATE YANG DIHASILKAN MELALUI METODE SISTEM PELARUT Ahmad Hafizullah Ritonga; Novesar Jamarun; Syukri Arief; Hermansyah Aziz; Yulidar Laila Safitri; Suarnikan Hulu; Barita Aritonang
PROSIDING SEMINAR KIMIA Prosiding SNKT Himpunan Mahasiswa Kimia FMIPA UNMUL 2021
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Pada penelitian ini, kami melaporkan bahwa komposit Linear Low-Density Polyethylene (LLDPE)/karet alam siklis(KAS)/precipitated calcium carbonate (PCC) telah berhasil diperoleh melalui metode sistem pelarut. Penelitian inibertujuan untuk menganalisis perubahan gugus fungsi dengan fourier transform infrared (FTIR) dan mengkarakterisasisifat morfologinya dengan scanning elctron microscope (SEM) pada komposit LLDPE/KAS/PCC. Komposit ini dibuatmelalui metode pencampuran dengan sistem pelarut dengan adanya kompatibiliser LLDPE-g-AO. LLDPE, KAS, danLLDPE-g-AO dimasukkan secara bersama-sama ke dalam gelas beaker yang berisi pelarut xylene sebanyak 100 mL,diaduk hingga larut pada suhu 140 oC, lalu ditambahkan dengan bahan pengisi PCC sambil diaduk selama 10 menitagar PCC terdispersi merata. Hasil spektrum FTIR komposit polimer menunjukkan bahwa pita khas dari PCC terlihatpada daerah 872,1 cm-1. Hasil morfologi dengan SEM menunjukkan adanya perubahan signifikan pada strukturpermukaan pada komposit polimer setelah penambahan bahan pengisi PCC.Kata kunci : Komposit, PCC, LLDPE, KAS, Sistem Pelarut.
PREPARASI DAN KARAKTERISASI ASPAL POLIMER DARI LIMBAH STYROFOAM DAN KARET BAN MENGGUNAKAN INISIATOR DIKUMIL PEROKSIDA DAN KOMPATIBILIZER DIVENIL BENZENA Ahmad Hafizullah Ritonga
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

This study aims to prepare and characterize polymer asphalt by utilizing styrofoam waste and tire rubber as an additive to improve the quality of asphalt by using dicumyl peroxide as an initiator and divenil benzene as a compatibilizer between styrofoam and tire rubber. Polymer asphalt is prepared by mixing styrofoam, tire rubber, asphalt, sand aggregate, divenil benzene and dicumyl peroxide, and extruded at 170 °C. The most optimum result was produced on Asphalt-Styrofoam-Rubber Tire (60:35:5) composition, with mechanical strength test of 2.92 MPa, water absorption test of 0.23%. The FTIR spectrum shows a change in the functional group in the hydroxyl group showing the reaction of crosslinking between styrofoam, tire rubber, DVB, with asphalt. Keywords: Styrofoam, Rubber Ban, Asphalt, Divenil Benzene, Dichoxic Peroxide
MODIFIKASI KARET ALAM SIKLIS DAN MALEAT ANHIDRAT DENGAN ADANYA PENAMBAHAN BENTONIT - CETIL TRIMETIL AMONIUM BROMIDA (CTAB) MENGGUNAKAN INISIATOR BENZOIL PEROKSIDA Ahmad Hafizullah Ritonga; Barita Aritonang; Hendri Faisal
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2018
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Research on the modification of Cyclic Natural Rubber (CNR) and Maleat Anhydrate (MA) with addition of Bentonite - Cetyl Trimethyl Ammonium Bromide (CTAB) using Initiator of Benzoyl Peroxide (BPO) has been done, which aims to find out the appropriate method of modifying CNR and MA using BPO initiators to form CNR-g-MA, and mixed together with Bentonite-CTAB produces a CNR-g-MA/Bentonite-CTAB composite, which results are reviewed by FTIR spectroscopy and SEM analysis. This modification was carried out by dissolving 7 g of CNR with 20 mL of xylene at 45-55 ° C, then mixing the CNR solution with 3 g MA, followed by the addition of 5 phr BPO initiator and addition of 3 phr Bentonite-CTAB while stirring for + 1 hour at the same temperature. The results obtained were analyzed by FTIR spectroscopy showing sharp and strong absorption peaks at wave numbers 1437.80 cm-1, 1311.24 cm-1 and 849.73 cm-1 and the absence of the -OH group on the wavelength number 3598.51 cm-1 and 3411.92 cm-1 indicating Bentonite-CTAB has been mixed in CNR-g-MA. The morphological results with SEM show that Bentonite-CTAB is mixed in CNR-g-MA homogeneously. Keywords: Cyclic Natural Rubber, Maleat Anhydrates, Benzoyl Peroxide, Bentonite, Cetyl TrimethylAmmonium Bromide.
PENGARUH BAHAN PENGISI ORGANO-PRECIPITATED CALCIUM CARBONATE DALAM CAMPURAN PLA/LLDPE DENGAN ADANYA KOMPATIBILISER DITINJAU DARI SIFAT MEKANIK DAN FISIK Melinda Sela; Ahmad Hafizullah Ritonga
PROSIDING SEMINAR KIMIA Vol 1 No 1 (2022): Prosiding SNK 2022
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The poor compatibility between Polylactic Acid (PLA) and Linear Low-Density Polyethylene (LLDPE), which has a different polarity, has decreased its mechanical and physical properties. Availability of Linear Low-Density Polyethylene grafting Oleic Acid (LLDPE-g-OA) compatibilizer and Organo-Precipitated Calcium Carbonate (O-PCC) filler in the PLA/LLDPE blends can improve the quality of the mechanical and physical properties of the polymer blends. This study aims to determine the influence of O-PCC as filler in the PLA/LLDPE blends with the existence of the LLDPE-g-AO compatibilizer to improve its mechanical and physical properties and compare the results with Precipitated Calcium Carbonate (PCC) filler. This polymer composite was made via a blending method with a solvent system, where PLA was dissolved in chloroform while LLDPE and LLDPE-g-AO were dissolved in xylene. After they were dissolved, glycerol 1% was added, followed by the addition of O-PCC variations. This research shows that the higher the filler concentration, the lower the water absorption percentage, where the optimum results are obtained for the PLA/LLDPE/LLDPE-g-AO/O-PCC composites variation of (69.5:19.5:10). :1) with a tensile strength of 22.629 MPa with a water absorption percentage of 45.36%. Keywords: PLA, LLDPE, LLDPE-g-AO, O-PCC, Glycerol
EFEKTIVITAS KOMPATIBILISER LLDPE-g-AO DALAM CAMPURAN POLI ASAM LAKTAT (PLA)/LINEAR LOW-DENSITY POLYETHYLENE (LLDPE) TERHADAP SIFAT FISIS DAN MEKANIS Nengsi Handayanti Gaho; Ahmad Hafizullah Ritonga
PROSIDING SEMINAR KIMIA Vol 1 No 1 (2022): Prosiding SNK 2022
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Semi-biodegradable plastic is an alternative that is currently being developed in order to reduce environmental pollution due to excessive use of commercial plastics and produce plastics that have physical and mechanical capabilities that are almost the same (not much different) with commercial plastics. However, the problem that arises is the low compatibility of mixtures with different polarities on the physical and mechanical strength of semi-biodegradable plastics. This study aims to determine the effectiveness of the addition of a linear low-density polyethylene grafting oleic acid (LLDPE-g-AO) compatibility to a mixture of poly lactic acid (PLA) and linear low-density polyethylene (LLDPE) in terms of physical and mechanical properties tests. The mixing of PLA and LLDPE was carried out through a blending method with a solvent system, where PLA used chloroform, LLDPE and the LLDPE-g-AO compatibilizer used xylene, which was followed by the addition of 1% glycerol in the mixing of the two resulting solutions. The results of this study indicate that the addition of LLDPE-g-AO effectively resulted in an increase in the mechanical strength and water absorption of the PLA/LLDPE mixture. The results of testing the mechanical properties of the most optimum tensile strength is the mixture of PLA/LLDPE/LLDPE-g-AO (70:22.5:7.5) which is 3.8078 MPa with the results of the physical properties test for absorption of 3.66 %. Keywords: PLA, LLDPE, LLDPE-g-AO, tensile strength, water adsorption
Co-Authors Adiansyah Adiansyah Adiansyah, Adiansyah Ahmad Ghazali Ardiansyah Ardiansyah Aritonang, Barita Ariyanti Ariska Arniat Christian Telaumbanu Barito Aritonang Barus, Ester Julianti Karolina Boy Isfa Boy isfa Debi Meilani Denny Akbar Tanjung Denny Akbar Tanjung Denny Akbar Tanjung Dicky Yuswardi Wiratma Eka Margareta Sinaga Eka Margareth Eliza Arman Hasni Yaturramadhan Harahap Hendri Faisal Herlina Herlina H Hermansyah Aziz Hestina Ida Ayu Putu Sri Widnyani Imel Santika Irmayani Irmayani Jenny Ria Sihombing Karnirius Harefa Kesaktian Manurung Khairiah, Khairiah Kusumastuti, Melati Yulia Lely Masnita Liver Iman Putra Zai Maniur Arianto Melinda Sela Nengsi Handayanti Gaho Nova Florentina Nova Florentina Ambarwati Novesar Jamarun Novita Br Ginting Putri, Gusliani Eka Rahmad Gurusinga Rahmi Novita Yusuf Rima Anggeraini Rizqa Hafizhah Harahap Salomo Sijabat Samran, Samran Shofian Syarifuddin Siahaan, Enzo W.B Siahaan, Maniur Arianto Sinaga, Arman Bemby Sri Wulan, Sri Suarnikan Hulu Sumardi . Suprianto Suprianto Syukri Arief Ulda Andriani Sijabat Ulfayani Mayasari Wiya Elsa Fitri Yosy Cinthya Eriwaty Silalahi Yosy Cinthya Eriwaty Silalahi Yulidar Laila Safitri Zuhairiah Nasution, Zuhairiah