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All Journal Jurnal Ilmu dan Teknologi Hasil Hutan International Journal of Renewable Energy Development JURNAL SELULOSA Jurnal Ilmu dan Teknologi Kayu Tropis

Faizatul FALAH

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Author-ID : 263467

Agriculture, Biological Sciences & Forestry Chemistry Education Energy

Published : 8 Documents Claim Missing Document

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Synthesis of Aqueous Polymer Isocyanate for Plywood Adhesive Euis Hermiati; Dede Heri Yuli Yanto; Faizatul Falah
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 7, No 1 (2009): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The aim of this research was to produce natural rubber-based Aqueous Polymer Isocyanate (API) adhesives that could meet standard for exterior grade plywood adhesive. Base polymers used were Natural Rubber Latex (NRL), Natural Rubber Latex - Styrene (NRL-St), and polyvinyl alcohol (PVOH).There were two kinds of adhesives produced; one was using NRL and PVOH as base polymers, and the other one was using NRL-St and PVOH as base polymers. Isocyanate crosslinking agent was added to each kind of adhesives at 2.5; 5; 10; 15 and 20% of the weight of the base polymers. They were measured for their total solid content (gravimetric method), pH (using pH meter), specific gravity (using picnometer) and viscosity (using Brookfield viscometer). Thermal analyses using TG/DTA was conducted at the addition of 0, 5 and 15% cross-linking agent. The adhesives were spread on the surface of Red Meranti (Shorea sp.) veneers (250 x 250 x 2.1 mm core; 250 x 250 x 1.5 mm face and back) at the glue spread rate 400 g/m2 DGL (double glue line). The veneers with adhesives were cold pressed at 10 kg/cm2 for 10 minutes and then hot pressed at 10 kg/cm2, 110ºC for 5 minutes. The plywood produced was conditioned for 2 weeks, then they were measured for their bond strength, delamintaion ratio, water absorption, and thickness swelling. Results of this study showed that either NRL or NRL-St could be used as one of base polymers in preparing API adhesive. Bond strength of plywood adhered with API adhesives made of NRL-St at all levels of isocyanate crosslinking agent addition were higher than those made from NRL. The addition of 10% or more isocyanate croslinkers to NRL/PVOH (50:50) or to NRL-St/PVOH (50:50) could produce plywood having bond strength that could meet interior grade standard. Plywood having bond strength of exterior grade standard were produced when 15% or more isocyanate crosslinkers were added to NRL-St/PVOH (50:50) or when 20% or more isocyanate crosslinkers were added NRL/PVOH (50:50).

Kraft and Soda Pulping of White Rot Pretreated Betung Bamboo Widya Fatriasari; Riksfardini A Ermawar; Faizatul Falah; Dede HY Yanto; Deddy TN Adi; Sita H Anita; Euis Hermiati
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 1 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This research was conducted to study the effects of pre-treatment with white-rot fungi on pulp properties of betung bamboo. Inoculum stocks of white-rot fungi (25 ml) were injected into polybags contained barkless fresh bamboo chips. Each polybag contained 214.9–286.8 g oven dry weight of chips. Bamboo chips in the polybags were inoculated by Pleurotus ostreatus and Trametes versicolor. Both of them were then incubated for 30 and 45 days at room temperature. Bamboo chips were cooked using soda and Kraft processes. The cooked bamboo chips were then defiberize using disc refiner for 3 times. Pulp yield, kappa number and degree of freeness of the pulp were then analyzed. The treatment of two white rot fungi, gave different effects on the characteristic of betung bamboo pulp. The effects of fungi treatment on kappa number and degree of freeness can be seen only at samples cooked using kraft process. Incubation time did not affect pulp yield of bamboo treated with both fungi, but it affected kappa number and degree of freeness of bamboo pulp cooked using kraft process. Bamboo treated with T. versicolor incubated for 45 days and cooked using kraft process produced the best pulp quality with high pulp yield.Key words: betung bamboo, biopulping, degree of freeness, kappa number, pulp yield.

Effects of Several Synthesis Conditions on Bond Strength of Plywood Adhered with Natural Rubber Latex – Styrene Adhesive Euis Hermiati; Widya Fatriasari; Faizatul Falah
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 4, No 1 (2006): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This report discusses the effects of synthesis conditions on bond strength of plywood adhered with natural rubber latex - styrene adhesive. Synthesis variables observed were catalyst (with and without catalyst), pre-stirring (0 and 3 hours) and heating time (1 and 2 hours). Three-ply plywood samples were prepared from Albizia (Paraserianthes falcataria) and Red meranti (Shorea, sp.) veneers and their gluability were evaluated in accordance to Indonesian Standard (SNI 01-2704-1992). The results revealed that synthesis conditions (i.e. catalyst, pre-stirring and heating time) did not significantly influence the bond strength of plywood. Natural rubber latex – styrene adhesive is very appropriate as adhesive for Red meranti plywood. Nevertheless, it can be used as limited interior application for Albizia plywood. An addition of 10% phenol formaldehyde (PF) in natural rubber latex - styrene adhesive slightly improved the exterior type bond strength of Red meranti plywood

Effect of Corn Steep Liquor on Bamboo Biochemical Pulping Using Phanerochaete chrysosporium Faizatul Falah; Widya Fatrisari; Riksfardini A Ermawar; Dedi TA Nugroho; Euis Hermiati
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 2 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The effect of corn steep liquor (CSL) loading on white rot fungi inoculums in the biochemical pulping of betung bamboo was investigated. The best condition of the pretreatment was also determined. There were two conditions of CSL amount used i.e. 1% (v/w) and 10 % (v/w) of CSL used in 100 ml of inoculums. In short, fresh bamboo chips without bark was incubated with Phanaerochaete chrysosporium inoculum stocks for 30 and 45 days at room temperature and followed by Kraft and Soda pulpings. SEM images of pretreated chips were taken after incubation. The pulp yield, Kappa number, freeness, delignification selectivity, and brightness were analyzed. The more CSL amount added with Kraft process gave better results on pulp yield. Increasing incubation time increased pulp yields and decreased the Kappa numbers. On the other hand, freeness and brightness of pulp increased especially for Kraft process. The SEM images showed that there were cell walls degradation activities. The best properties of pulp were obtained by the Kraft process for the treatment of 10% CSL with 30 days of incubation time.Key words: betung bamboo, biochemical pulping, corn steep liquor, Phanaerochaete chrysosporium

Co-Authors Apri Heri Iswanto Deddy TN Adi Dede Heri Yuli YANTO Dede HY Yanto Dedi TA Nugroho Eko Budi Santoso Euis Hermiati Euis HERMIATI Fahriya Puspita Sari Fahriya Puspita Sari Fajriutami, Triyani hamzah, fajar nur Ina Winarni, Ina Ismayati, Maya Laksana, Raden Permana Budi Lubis, Muhammad Adly Rahandi Maya Ismayati Muhammad Adly Rahandi Lubis Muhammad Ghozali Nissa Nurfajrin Solihat Nissa Nurfajrin Solihat Pratomo, Bagas Ikhasan Ramadhan, Kharisma Panji Riksfardini A Ermawar Riksfardini Annisa ERMAWAR Sita H Anita Sita Heris Anita Sita Heris Anita Triyono Nugroho Adi Wahyu Hidayat Wasrin Syafii Widya FATRIASARI Widya FATRIASARI Widya Fatriasari Widya Fatrisari Yadav, Sumit Manohar

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