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MODIFIKASI KOPOLIMER KARET ALAM SIKLIS GRAFTING ASAM OLEAT MENGGUNAKAN INISIATOR BENZOIL PEROKSIDA DAN BAHAN PENGISI BENTONIT-CETIL TRIMETIL AMONIUM BROMIDA Ahmad Hafizullah Ritonga; Barita Aritonang; Liver Iman Putra Zai
JURNAL KIMIA MULAWARMAN Vol 16 No 1 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v16i1.726

Research on the modification of Cyclic Natural Rubber (CNR) grafting Oleic Acid (OA) copolymer using initiator of Benzoyl Peroxide (BPO) and the filler of bentonite-Cetil Trimethyl Ammonium Bromide (CTAB) has been carried out, which aims to determine the method of modifying Cyclic Natural Rubber (CNR) and Oleic Acid (OA) so it can produce CNR-g-OA copolymer through grafting method with BPO initiator mixed together with bentonite-CTAB. This research was conducted in three stages. The first stage is the process of dissolving CNR using xylene. The second stage is the process of mixing CNR solution and OA with the composition (70:30) phr, followed by the addition of BPO initiator and bentonite-CTAB filler. The third stage is characterization using FTIR and Scanning Electron Microscopy (SEM). The results of the analysis using FT-IR showed an absorption at 1708,23 cm-1 which indicated the presence of C=O bonds from oleic acid which had been grafted on CNR, and increased intensity after addition of bentonite-CTAB at 1568,96 cm-1; 1446,13 cm-1; 1255,66 cm-1; and 866,94 cm-1. Characterization results using SEM showed that the mixing of Bentonite-CTAB in KAS-g-OA was evenly distributed and quite homogeneous.

PRODUKSI DAN KARAKTERISASI NANOSERAT SELULOSA ASETAT DENGAN METODE ELEKTROSPINING Mahyuni Harahap; Liver Iman Putra Zai
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol 6 No 1 (2022): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

In this research, cellulose acetate fiber was produced by electrospinning method. Cellulose acetate was dissolved with acetone solvent and then putin to a cooling system torestrain the rate of evaporation of cellulose acetate. The conductivity and evaporation rate of the cellulose acetate solution were tested, and the cellulose acetate fiber sproduced were tested using scanning electron microscopy (SEM). The conductivity of the cellulose acetate solutionwas 3.45 S/cm at 15oC and almost doubled at 22oC. The cooling system test was ableto maintain the temperature of the cellulose acetate solution at 15 oC for approximately 2 minutes. In addition, bead fibers are produced due to their low conductivity.

Coconut oil effect on the hygroscopic properties of Simalambuo wood (Lophopetalum spp.) LIVER IMAN PUTRA ZAI; SAHARMAN GEA; MARPONGAHTUN MARPONGAHTUN; EDDYANTO EDDYANTO; NUR AZIZAH; APRI H SISWANTO
Jurnal Natural Volume 22 Number 2, June 2022
Publisher : Universitas Syiah Kuala

Simalambuo (Lophopetalum spp) trees are endemic to Southeast Asia and widely grow in the natural forests in Nias island. Local people whose experience of utilizing the simalambuo wood have claimed that the wood easily absorbs water. Throughout our searches, not many efforts to modify the physical properties of the simalambuo woods have been carried out yet. Therefore, in this study, we modified simalambuo wood by thermal treatment in coconut oil-ambient conditions. The heat treatment became an option to support the efforts in reducing the use of non-environmental-friendly materials and methods. The simalambuo wood was treated under coconut oil at 130-210oC for 6 hours. Coconut oil uptake was up to 174%, while the leaching test (AWPA E-06 standard) showed the uneasily permeate out from the wood and high retention differently in terms of treatment and cooling temperature. Heat treatment with coconut oil affected water absorption ability and improved dimensional stability of simalambuo wood. Water absorption reduced from 162% to 16%, and dimensional stability increased from 8.4% to 4.2% at 192 hours after being soaked in water. The higher the difference between treatment and cooling temperature, the better-affected water absorption ability was and the higher dimensional ability could be achieved.

Coconut oil effect on the hygroscopic properties of Simalambuo wood (Lophopetalum spp.) LIVER IMAN PUTRA ZAI; SAHARMAN GEA; MARPONGAHTUN MARPONGAHTUN; EDDYANTO EDDYANTO; NUR AZIZAH; APRI H SISWANTO
Jurnal Natural Volume 22 Number 2, June 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v22i2.24158

Simalambuo (Lophopetalum spp) trees are endemic to Southeast Asia and widely grow in the natural forests in Nias island. Local people whose experience of utilizing the simalambuo wood have claimed that the wood easily absorbs water. Throughout our searches, not many efforts to modify the physical properties of the simalambuo woods have been carried out yet. Therefore, in this study, we modified simalambuo wood by thermal treatment in coconut oil-ambient conditions. The heat treatment became an option to support the efforts in reducing the use of non-environmental-friendly materials and methods. The simalambuo wood was treated under coconut oil at 130-210oC for 6 hours. Coconut oil uptake was up to 174%, while the leaching test (AWPA E-06 standard) showed the uneasily permeate out from the wood and high retention differently in terms of treatment and cooling temperature. Heat treatment with coconut oil affected water absorption ability and improved dimensional stability of simalambuo wood. Water absorption reduced from 162% to 16%, and dimensional stability increased from 8.4% to 4.2% at 192 hours after being soaked in water. The higher the difference between treatment and cooling temperature, the better-affected water absorption ability was and the higher dimensional ability could be achieved.

Pemanfaatan Limbah Kulit Pisang Sebagai Arang Aktif Di Desa Nagori Bangun Mahyuni Harahap; Liver Iman Putra Zai; Gultom, Erdiana; Deboy Anugerah Gea; Jhonialman Tafonao; Sowua Putra Hia
Jurnal Abdimas Mutiara Vol. 4 No. 2 (2023): JURNAL ABDIMAS MUTIARA
Publisher : Universitas Sari Mutiara Indonesia

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Tujuan kegiatan pengabdian ini adalah mengedukasi masyarakat mengenai cara memanfaatkan limbah kulit pisang sebagai arang aktif. Metode pelaksanaan yang digunakan ada 2 tahapan yaitu : 1) Tahap Persiapan meliputi : Penyiapan bahan paparan, Diskusi dan sharing dengan anggota tim, Pencarian bahan paparan di internet dan buku, Penyiapan kuisener., dan Persiapan bahan untuk demonstrasi/praktek pembuatan ecoenzym, II) Tahap Pelaksanaan PkM di lokasi mitra : Penyebaran kuisener sebelum paparan, Pemaparan bahan paparan kepada masyarakat, Praktek Pembuatan Ecoenzym dan Penyebaran kuisener setelah paparan. Target yang diharapkan pada kegiatan pengabdian masyarakat ini yaitu bertambahnya pengetahuan masyarakat mengenai cara memanfaatkan limbah kulit pisang. Target ini tercapai, hal ini dapat dilihat dari hasil kuisioner yang disebar sebelum dan sesudah kegiatan PkM.

Sosialisasi Pengolahan Limbah Biomassa Di Desa Nagori Margomulyo Purwandari, Vivi; Mahyuni Harahap; Liver Iman Putra Zai; Jhonialman Tafonao; Sowua Putra Hia
Jurnal Abdimas Mutiara Vol. 5 No. 2 (2024): JURNAL ABDIMAS MUTIARA
Publisher : Universitas Sari Mutiara Indonesia

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Tujuan kegiatan pengabdian ini adalah mengedukasi masyarakat mengenai cara memanfaatkan limbah biomassa. Metode pelaksanaan yang digunakan ada 2 tahapan yaitu : 1) Tahap Persiapan meliputi : Penyiapan bahan paparan, Diskusi dan sharing dengan anggota tim, Pencarian bahan paparan di internet dan buku, Penyiapan kuesioner dan Persiapan bahan untuk demonstrasi/praktek pengolahan limbah biomassa, II) Tahap Pelaksanaan PkM di lokasi mitra : Penyebaran kuesioner sebelum paparan, Pemaparan bahan paparan kepada masyarakat, Praktek Pengolahan limbah biomassa dan Penyebaran kuesioner setelah paparan. Target yang diharapkan pada kegiatan pengabdian masyarakat ini yaitu bertambahnya pengetahuan dalam mengolah limbah biomassa dan mengatasi permasalahan limbah. Dan diharapkan kegiatan ini mampu mendorong masyarakat untuk melakukan praktik yang berkelanjutan.

PRODUKSI DAN KARAKTERISASI NANOSERAT SELULOSA ASETAT DENGAN METODE ELEKTROSPINING Harahap, Mahyuni; Zai, Liver Iman Putra
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 6 No. 1 (2022): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v6i1.2978

In this research, cellulose acetate fiber was produced by electrospinning method. Cellulose acetate was dissolved with acetone solvent and then putin to a cooling system torestrain the rate of evaporation of cellulose acetate. The conductivity and evaporation rate of the cellulose acetate solution were tested, and the cellulose acetate fiber sproduced were tested using scanning electron microscopy (SEM). The conductivity of the cellulose acetate solutionwas 3.45 S/cm at 15oC and almost doubled at 22oC. The cooling system test was ableto maintain the temperature of the cellulose acetate solution at 15 oC for approximately 2 minutes. In addition, bead fibers are produced due to their low conductivity.

INCREASING TRANSPARENT SOAP PRODUCTION BY UTILIZING VIRGIN COCONUT OIL (VCO) AND ORANGE PEEL EXTRACTTO INCREASE ANTIOXIDANT PROPERTIES Hestina; Gultom, Erdiana; Zai, Liver Iman Putra; Mendrofa, Yelsin Alfidar
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 2 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i2.4809

Orange peel may be a plant that produces fundamental oils that are utilized as cancer prevention agents. Straightforward soap is one of the cleanser innovations that creates cleanser more alluring and includes a smoother froth. In this ponder utilizing the refining strategy to get fundamental oil extricates from orange peels. At that point, in this ponder utilizing virgin coconut oil as an fixing in making cleanser, where virgin coconut oil (VCO) is an oil determined from coconut starch quintessence containing tall lauric corrosive which serves to smooth and moisturize the skin. The examination conducted in this think about was the investigation of water substance, cleanser pH, tall froth, free antacid, cancer prevention agents, and FTIR. The strategy utilized in analyzing antioxidant movement in this think about is the DPPH strategy. In this ponder, water substance was gotten as much as 18%, 26%, 28%, and 30%. The pH esteem in this consider contains a esteem of 8 and free soluble base test values were gotten at 0.2%, 0.3%, 0.2% and 0.1%. For the test esteem of antioxidant action of basic oils gotten by 63.95%, in straightforward cleanser with the expansion of fundamental oils gotten by 64.14%, in straightforward cleanser without the expansion of basic oils gotten by 45.23%. For tall yields froth is gotten on normal 7 cm. The esteem of pH and free antacid substance in this think about has met the Indonesian National Standard (SNI) for straightforward strong cleanser.

THE EFFECT OF MOLECULAR WEIGHT ON THE THERMAL STABILITY OF CELLULOSE ACETATE Zebua, Suniati; Zagoto, Nasrani; Halawa, Advent Tri Yanti; Zai, Liver Iman Putra; Purwandari, Vivi; Harahap, Mahyuni
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5017

An organic ester with good mechanical characteristics (such as a high Young's modulus and tensile strength) is cellulose acetate (CA), a biobased polymer. Over the past few decades, the thermal characteristics of CA have been extensively studied. This study looked at the morphology and thermal characteristics of plasticized CA, particularly its mass loss according to thermogravimetric analysis. The analysis and comparison of the overall thermal behavior with theoretical models was done. The results of this study may have particular significance as certain polymers have a recognized dependence on β-relaxation for their mechanical attributes; this may also apply to CA.

ANTIOXIDANT ACTIVITY ASSAY ETANOL EXTRACT OF PEPAYA LEAVES (Carica Papaya L.) FROM ACEH BESAR Tafonao, Joni Alman; Tammi, Isral; Damay, Rizki Damayanti; Zulfajri, Muhammad; Sembiring, Desi Sri Pasca Sari; Zai, Liver Iman Putra
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 2 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v9i2.5749

The leaves, fruits, and roots of papaya (Carica papaya L) are mostly used as traditional medicine. Papaya leaves are used by the community to treat diarrhoea, acne, appetite, and digestive problems. Papaya leaf extract has potential as an antioxidant derived from secondary metabolites, namely alkaloid compounds that produce a bitter taste in papaya leaves. This study was conducted to look at antioxidant compounds by conducting antioxidant activity tests. The results of papaya leaf research contain active compounds flavonoids, alkaloids, and steroids. Research conducted on the level of colour brightness in papaya leaves is different, namely 10 ppm, 25 ppm, 50 ppm, 75 ppm and 100 ppm. Papaya leaf extract has a power that is included in the strong category with the IC50 value obtained 8.71 marked by the results of calculations less than 100. Antioxidant activity testing using the DPPH method papaya leaf extract positively contains antioxidant compounds and can be utilised as a natural antioxidant.

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