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All Journal Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Jurnal Sylva Lestari Jurnal Ilmu-Ilmu Kehutanan
Vera Junita BR Sitanggang
Department Of Forest Products, Faculty Of Forestry And Environment, IPB University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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Analisis Daya Saing Produk Bambu Indonesia di Pasar Internasional Vera Junita BR Sitanggang; Maria S. T. Simbolon; Bintang C. H. Simangunsong
JURNAL ILMU-ILMU KEHUTANAN Vol 7, No 1 (2023)
Publisher : Fakultas Pertanian, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jiik.7.1.39-48

Abstract

Indonesia is the third richest country in Asia on bamboo resources. In Indonesia, bamboo has been widely used to substitute wood on many applications and also exported in certains bamboo products, such as sticks (used primarily for plaiting), charcoals, flooring, plywood, mats and screens, plaits and plaiting articles, pulp, and paper articles. This research aimed to analyse comparative and competitive advantages of Indonesian bamboo products in international market, including the factors effect its export growth on the period 2013 to 2017. Analysis was conducted under techniques RCA (Revealed Comparative Advantage), TSI (Trade Specialization Index) and CMS (Constant Market Share). Overall, the results showed that bamboo sticks and bamboo charcoals had strong and mature competitive advantages. However, bamboo flooring, bamboo plywood, bamboo mats and screens, and bamboo plaits and plaiting articles had weak competitive advantages and were on growing phase. Bamboo pulp and paper articles had had strong competitive advantages, but it was lessening to the phase of re-importing. The results of CMS analysis showed that commodity composition factor had positively affected export growth, while standard growth and competitiveness factors gave negative effect to Indonesian bamboo export growth.
Fast-Growing Wood-Polymer Nano Composite Characteristics through Nano-SiO2 Impregnation Istie Rahayu; Abdul Salam Min Rohmatillah; Esti Prihatini; Wayan Darmawan; Gilang Dwi Laksono; Vera Junita Sitanggang
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.69-78

Abstract

Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) and jabon (Anthocephalus cadamba) are fast-growing wood species that have low strength and durability class. One of methods for improving the characteristics of ganitri and jabon woods is impregnation. This study objectives were to analyze the effect of impregnation of Melamine Formaldehyde Furfuryl Alcohol (MFFA) copolymer and 0.5% Nano-SiO2 on the physical, mechanical and durability properties of ganitri and jabon woods. The impregnation process was carried out by applying a 0.5 bar vacuum for 1 hour and followed by 2 bar pressure for 2 hours. The results showed that impregnation with MFFA and Nano-SiO2 could improve optimally the physical and mechanical properties and durability of fast-growing woods
Fast-Growing Wood-Polymer Nano Composite Characteristics through Nano-SiO2 Impregnation Istie Rahayu; Abdul Salam Min Rohmatillah; Esti Prihatini; Wayan Darmawan; Gilang Dwi Laksono; Vera Junita Sitanggang
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.69-78

Abstract

Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) and jabon (Anthocephalus cadamba) are fast-growing wood species that have low strength and durability class. One of methods for improving the characteristics of ganitri and jabon woods is impregnation. This study objectives were to analyze the effect of impregnation of Melamine Formaldehyde Furfuryl Alcohol (MFFA) copolymer and 0.5% Nano-SiO2 on the physical, mechanical and durability properties of ganitri and jabon woods. The impregnation process was carried out by applying a 0.5 bar vacuum for 1 hour and followed by 2 bar pressure for 2 hours. The results showed that impregnation with MFFA and Nano-SiO2 could improve optimally the physical and mechanical properties and durability of fast-growing woods
Synthesis and Characterization of Poly(hydroxy)urethane from Polyols for Beech (Fagus sylvatica) Wood Impregnation Vera Junita Sitanggang; Nyoman Jaya Wistara; Philippe Gérardin
Jurnal Sylva Lestari Vol. 11 No. 2 (2023): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v11i2.701

Abstract

A non-isocyanate route of polyurethane synthesis based on polyol (xylitol, sorbitol, glycerol, and PG3), alkyl carbonate (DMC and DEC), and diamine (HMDA, EDA, and DETA) was conducted for wood impregnation through in-site polymerization. The structure and mass average molecular weight (Mw) of the polyurethanes were analyzed using FTIR, NMR, and SEC. According to the results, polyurethane synthesis by a two-pot method in water brought cyclic carbonate degradation. The distribution of Mw of the polyurethanes showed that the most satisfying polymer (4380 g/mol) was prepared without solvent. Polyurethanes synthesized in methanol have a higher Mw than that in distilled water. In the same solvent, the use of HMDA resulted in a polymer with higher Mw than that of EDA. One-step wood impregnation in a solvent gave unsatisfactory WPG (12.59–19.71%) and LC (50.36–62.80%). However, one-step impregnation without solvent gave a higher WPG (78.39–87.63%) and a lower LC (19.11–21.25%). It is not feasible to be applied industrially. The two-step impregnation gave WPG (14.89-30.73%) and LC (42.22–56.52%). Wood impregnation using methanol or ethanol as the solvent was more recommended than using an aqueous solution. However, the resistance against leaching needs improvement. Keywords: Alkyl carbonate, diamine, polyol, polyurethane, wood impregnation
COMPETITIVENESS ANALYSIS OF INDONESIAN BAMBOO PRODUCTS IN INTERNATIONAL MARKET Vera Junita Sitanggang; Maria S. T. Simbolon; Bintang C. H. Simangunsong
Jurnal Ilmu Ilmu Kehutanan Vol. 7 No. 1 (2023)
Publisher : Jurusan Kehutanan Fakultas Pertanian Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jiik.7.1.39-48

Abstract

Indonesia is the third richest country in Asia on bamboo resources. In Indonesia, bamboo has been widely used to substitute wood on many applications and also exported in certains bamboo products, such as sticks (used primarily for plaiting), charcoals, flooring, plywood, mats and screens, plaits and plaiting articles, pulp, and paper articles. This research aimed to analyse comparative and competitive advantages of Indonesian bamboo products in international market, including the factors effect its export growth on the period 2013 to 2017. Analysis was conducted under techniques RCA (Revealed Comparative Advantage), TSI (Trade Specialization Index) and CMS (Constant Market Share). Overall, the results showed that bamboo sticks and bamboo charcoals had strong and mature competitive advantages. However, bamboo flooring, bamboo plywood, bamboo mats and screens, and bamboo plaits and plaiting articles had weak competitive advantages and were on growing phase. Bamboo pulp and paper articles had had strong competitive advantages, but it was lessening to the phase of re-importing. The results of CMS analysis showed that commodity composition factor had positively affected export growth, while standard growth and competitiveness factors gave negative effect to Indonesian bamboo export growth.
Co-Authors Abdul Salam Min Rohmatillah Bintang C. H. Simangunsong Esti Prihatini Gilang Dwi Laksono I Nyoman Jaya Wistara Istie Rahayu Maria S. T. Simbolon Maria S. T. Simbolon Philippe Gérardin Wayan Darmawan