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All Journal Jurnal Arbitrer BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN TAMBUSAI JOURNAL OF SCIENCE AND SOCIAL RESEARCH JISIP: Jurnal Ilmu Sosial dan Pendidikan Jurnal Review Pendidikan dan Pengajaran (JRPP) Jurnal Ilmiah Biologi UMA (JIBIOMA) Jurnal Ilmiah Wahana Pendidikan Indonesian Community Journal Jurnal Sosial Humaniora dan Pendidikan (JUSHPEN) Jurnal Natural Innovative: Journal Of Social Science Research Dikdimas : Jurnal Pengabdian Kepada Masyarakat Jurnal Agro Fabrica
Rosliana Lubis
Univeritas Medan Area
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Neuroscience Nursing Physics Public Health Social Sciences Other

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Journal : Jurnal Natural

 1 
Influence of monomer concentration on the morphology, contact angle, water uptake, and antibacterial activity of grafted cellulose obtained from peel durian ROSLIANA LUBIS; SAISA SAISA
Jurnal Natural Volume 22 Number 1, February 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1963.855 KB) | DOI: 10.24815/jn.v22i1.23865

Abstract

The objective of the current study is to evaluate and determine the effect of monomer concentration of ClAETA on the grafting copolymerization of oxidized cellulose which isolated from peel durian. Four concentrations of ClAETA were used in this study, e.g., 40, 50, 60, and 70%. Several analyses were performed to determine the material characteristic, e.g., degree of grafting, FT-IR, surface morphology, contact angle, degree of swelling, and antibacterial activity. The result showed, monomer concetration plays a significant role to the physical and surface morphology of DAC-ClAETA. The degree of grafting of ClAETA was found in the range of 15-31%, and at the concentration of 50% the grafted oxidized cellulose has 30.4% of degree of grafting. SEM images showed the pore volume has linear correlation to the monomer concetration, it increased the surface roughness. Also, the contact angle confirmed the hydrophilicity and degree of swelling of grafted oxidized cellulose was increase that linear to ClAETA concentration. DAC-g- ClAETA was found antibacterial active against S. aureus, S. epidermis, and C. albicans than DAC.
Thermal and physical properties of CNF/glutaraldehyde-gelatin-based hydrogel ROSLIANA LUBIS; SRI WAHYUNA SARAGIH; WARDATUL HUSNA IRHAM; AJMAIN AJMAIN; SAISA SAISA
Jurnal Natural Volume 23 Number 1, February 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v23i1.29935

Abstract

The use of hydrogel as a wound dressing material is currently being massively developed. In addition to functioning to protect wounds, the use of hydrogel can also provide moisture in a measured manner and can be used as a drug delivery medium. In this study, hydrogel based on CNF and glutaraldehyde crosslinking agent and addition of gelatin were developed with various compositions 0.25; 0.5; 0.75 g to increase the ability of CNF and hydrogel to absorb water so that it is good to be applied as a wound dressing. The composting of the three materials aims to obtain a hydrogel with good thermal and physical properties. Based on physical character for a good ratio of swelling (666,62%) and degree of cross-linking (94%) on the hydrogel with a composition variation of 0.5 g of CNF addition. For the thermal stability of hydrogel var 2, TMax 591oC provides better thermal stability than var 1 and var 3. The morphology of hydrogel shows very small and evenly distributed pores on the surface which can absorb more water.
Thermal and physical properties of CNF/glutaraldehyde-gelatin-based hydrogel ROSLIANA LUBIS; SRI WAHYUNA SARAGIH; WARDATUL HUSNA IRHAM; AJMAIN AJMAIN; SAISA SAISA
Jurnal Natural Volume 23 Number 1, February 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v23i1.29935

Abstract

The use of hydrogel as a wound dressing material is currently being massively developed. In addition to functioning to protect wounds, the use of hydrogel can also provide moisture in a measured manner and can be used as a drug delivery medium. In this study, hydrogel based on CNF and glutaraldehyde crosslinking agent and addition of gelatin were developed with various compositions 0.25; 0.5; 0.75 g to increase the ability of CNF and hydrogel to absorb water so that it is good to be applied as a wound dressing. The composting of the three materials aims to obtain a hydrogel with good thermal and physical properties. Based on physical character for a good ratio of swelling (666,62%) and degree of cross-linking (94%) on the hydrogel with a composition variation of 0.5 g of CNF addition. For the thermal stability of hydrogel var 2, TMax 591oC provides better thermal stability than var 1 and var 3. The morphology of hydrogel shows very small and evenly distributed pores on the surface which can absorb more water.
The effect of maleic anhydride concentration in manufacturing polypropylene grafted maleic anhydride compatibilizer on the test percent of grafting degree TANJUNG, DENNY AKBAR; JAMARUN, NOVESAR; LUBIS, ROSLIANA
Jurnal Natural Volume 24 Number 2, June 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v24i2.35317

Abstract

The difference in polarity between materials often prevents direct interaction; therefore, a compatibilizer is required to facilitate reactions between polar and non-polar substances. This study aims to investigate the effect of maleic anhydride (MA) concentration on the grafting process of MA onto polypropylene (PP) chains, using benzoyl peroxide (BPO) as an initiator. The blending method employing an internal mixer was used to combine the materials, and the degree of grafting was determined via titration, with three replicates performed for accuracy. The results indicated that the highest grafting degree, 10.28%, was achieved at a composition of 86% PP, 11% MA, and 3% BPO. Fourier Transform Infrared (FTIR) spectroscopy analysis of polypropylene grafted with maleic anhydride (PP-g-MA) revealed new absorption peaks at wavenumbers 1707 cm and 1162 cm. Furthermore, increasing the concentration of maleic anhydride did not significantly affect the grafting degree. This study provides valuable insight for the development of PPg-MA compatibilizers.
Preparation and characterization of physical properties of molded pulp from empty fruit bunches of oil palm LUBIS, ROSLIANA; RIYANTO, RIYANTO; SAISA, SAISA
Jurnal Natural Volume 24 Number 2, June 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v24i2.37444

Abstract

This research aims to determine the impact of pretreatment on empty fruit bunches (EFB) of palm oil fibers before the pulping process on the quality of the molded pulp produced. The study includes EFB fiber pretreatment processes, pulp production, pulp molding, physical characteristic analysis, and molded pulp performance evaluation. The pulp production process involves acid-base hydrolysis reactions. The produced molded pulp is done manually. Characterization of the molded pulp includes measurements of paper grammage, thickness, density, and moisture content. The characteristics of pulp produced from pretreated EFB fibers are as follows: an average grammage value of 415.48 g/m, paper thickness of 1.53 mm, water absorption capacity of 13.33-33.33%, density of paper of 0,026 x 106 - 0,027 x 106 g/m3, and a smooth surface morphology. Meanwhile, the characteristics of pulp produced from without pretreatment EFB fibers include an average grammage value of 372.18 g/m, paper thickness of 0.77 mm, water absorption capacity of 20.34-43.21%, density of paper of 0,004 x 106 - 0,008 x 106 g/m3, and a rough surface morphology due to pores on the fiber surface.
Co-Authors Adhyaksa, Yohannes Affandi Affandi Affandi Ahmad Prayudi Ahmad Prayudi Aji Suteja AJMAIN AJMAIN Apriansyah Sembiring Atsary, Tsara Berutu, Sarlina Dardanila, Dardanila Dini, Dini Pratiwi Dwi Mutia Anggraini Dwi Widayati Dwi Widayati, Dwi Effiati Juliana Hasibuan Emmy Harso Kardhinata Farida Ariani Ferdinand Susilo Fitri Auliani Fitri Dian Puspa Nadeak Fitriani, Rita Gustianingsih Harahap, Sindia Rada Hasibuan, Mahidin EL Wafa Hia, Indah Kurniati Ida Basaria Izhar Hasan Nasution Jamilah Nasution KIKI NURTJAHJA Lubis, Haris Sutan Lumbanraja, Monika Indriani Marsella, Emma Meida Nugrahalia Meida Nugrahalia, Meida Meliala, Bibel Agrivino Muhammad Ferdiansyah Muhammad Usman Muhammad Usman, Muhammad Muhammad Yusuf Muhammad Yusuf Mulyadi Mulyadi Munte, Nuriana Muthiah Muthiah Napitupulu , Lia Anggreani Nasution, Latifah Yusri Novesar Jamarun Nurhayati Harahap Nuriana Munte Rahimah, Rahimah Rahmiati Rahmiati Regita Ayuni Putri Ginting Rita Fitriani Ritonga, Ovi Andre Ritonga, Parlaungan Riyanto Riyanto Riyanto Riyanto Riyanto Riyanto Riyanto riyanto SAISA SAISA SAISA SAISA SAISA, SAISA Salliyanti, Salliyanti Sartini Sartini Sigit Simatupang, Monika Margaretha Sitepu, Keke Meinina Siti Rubiatik Siti Rubiatik, Siti Sri Wahyuna Saragih Tanjung, Denny Akbar Tarigan, Emilia Surabina Br Tsara Atsary WARDATUL HUSNA IRHAM Zakki Rizkiyah Zakki Rizkiyah, Zakki