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All Journal Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Sains Materi Indonesia

Lisman Suryanegara

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Author-ID : 3654194

Agriculture, Biological Sciences & Forestry Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Pemanfaatan Kulit Kayu Akasia (Acacia mangium Willd) untuk Papan Partikel dengan Kadar Fenol Formaldehida Rendah Utilization of Acacia (Acacia mangium Willd) Bark for Particleboard with Low Phenol Formaldehyde Content Subyakto Subyakto; Lisman Suryanegara; Mohamad Gopar; Kurnia Wiji Prasetyo
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 3, No 2 (2005): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Industrial forest plantation is a future for supplying raw material of wood industries. From the wood harvesting, bark wastes are abundantly resulted. As an illustration, a pulp factory in Palembang produces about 500 ton per day of bark waste of Acacia mangium Willd. At present the utilization of bark wastes was not optimally done. The purpose of this experiment was to utilize bark waste for particleboard, it is expected that high tannin content in the bark will reduce amount of adhesive applied.Fresh bark was cut into chips and processed further with a ring flaker machine to produce bark particles. Bark particles were mixed with Phenol Formaldehyde adhesive and water then hot pressed at temperature of 150ºC, pressure of 20 kgf/cm2, for 15 minutes. Amount of adhesive was varied at 4%, 6% and 8% based on dry weight of particles. Water was added for 10% of dry weight of particles. The size of board was 25 cm x 25 cm x 1 cm, with target densities of 0.7 and 0.9 g/cm3, with 2 replications. Boards were tested for their physical and mechanical properties in accordance with JIS A 5908.Results shown that board with density of 0.9 g/cm3 and amount of adhesive of 6% and 8% have internal bond and MOR (modulus of rupture) that met JIS A5908 type 8; while values of MOE (modulus of elasticity) and thickness swelling were not met the standard

UPAYA MENGURANGI KOTORAN DAN KANDUNGAN ZAT EKSTRAKTIF SERAT TANDAN KOSONG KELAPA SAWIT DENGAN PENCUCIAN Reduction of Dirts and Extractives Contents of Oil Palm Empty Fruit Bunch Fiber by Water Treatment. Euis Hermiati; Nurhayati Nurhayati; Lisman Suryanegara; Mohamad Gopar
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 1, No 1 (2003): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The purpose of this study is to get an optimum washing process of oil palm empty fruit bunch (OP EFB) fiber to reduce dirts and extractives contents in the fiber. Treatments used were boiling (0.5; 1; 2 and 3 hours); soaking and shaking in cold water (1; 4; 8; 12; 24 and 48 hours); 10 minutes agitation in cold water using a washing machine; and 10 minutes agitation in cold water using a washing machine followed by boiling for 0.5 hours. The clean fiber yield as well as water, ash, hot and cold water soluble extractives and fat contents were determined. Results of this study showed that soaking and shaking of OP EFB fiber in cold water were quite effective for removing dirts on the fiber, but were not for removing hot and cold water extractives and fats. Strong agitation could increase the removal of dirts and extractives from the OP EFB fiber. However, boiling and combination of agitation and boiling removed dirts and extractives more effectively than did the two former processes

Pengaruh Dimensi dan Pre-kompresi Kayu terhadap Sifat Penyerapan Air Dimensions and Pre-Compression Wood Influences on Water Absorption Lisman Suryanegara; Wahyu Dwianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 2, No 2 (2004): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This research attempted to understand the effect of dimension and pre-compression on water absorption behavior of wood. Wood samples were water immersed at room temperature and 60°C for 48 hours in certain periods. Retention, weight gain and recovery level were observed.The results showed that water absorption mostly depended on radial and tangential area for un-compressed wood. For pre-compressed wood, the different of water immersion temperature caused recovery level differences. The retention of pre-compressed wood samples which 60°C water immersion for 48 hours were higher than that of un-compressed wood samples

EFFECTS OF CHITOSAN COATING ON THE PHYSICAL, MECHANICAL AND ANTIMICROBIAL PROPERTIES OF FOOD PACKAGING PAPER Kurnia Wiji Prasetiyo; Deni Zulfiana; Sita Heris Anita; Widya Fatriasari; Lisman Suryanegara; Nanang Masruchin; Sesmi Gutari
Jurnal Sains Materi Indonesia Vol. 21 No. 2 (2020): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

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EFFECTS OF CHITOSAN COATING ON THE PHYSICAL, MECHANICAL AND ANTIMICROBIAL PROPERTIES OF FOOD PACKAGING PAPER. The coating process on food packaging paper is carried out to improve the food safety and health aspect from dangerous substance migration from food packaging into food. Chitosan has attracted interest in packaging, especially in food packaging as edible films and coatings. A paper from oil palm empty fruit bunches (OPEFB) pulp was coated with chitosan using different pulp weight (1, 1.5, 2 g) and chitosan content (0.25, 0.50, 0.75, 1 g) as parameters. The effect of chitosan as coating material on physical, mechanical, and antimicrobial properties was studied. The results showed that the density and grammage values of the paper increased after coating due to the increasing of chitosan content. The mechanical properties of the coated paper, such as tensile strength, tensile modulus and elongation, improved in line with the increase of chitosan content and pulp weight. The addition of chitosan on paper imparts antimicrobial properties against Gram-positive bacteria (Staphylococcus aureus) and Gram- negative bacteria (Escherichia coli).

Co-Authors Deni Zulfiana Euis Hermiati Kurnia Wiji Prasetiyo Kurnia Wiji Prasetyo Mohamad Gopar Nanang Masruchin Nurhayati Nurhayati Sesmi Gutari Sita Heris Anita SUBYAKTO SUBYAKTO Wahyu DWIANTO Widya FATRIASARI

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