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PENYEMPURNAAN SIFAT PAPAN SERAT KERAPATAN SEDANG DARI PELEPAH NIPAH DAN CAMPURANNYA DENGAN SABUT KELAPA Dian Anggraini Indrawan; Han Roliadi; Rossi Margareth Tampubolon; Gustan Pari
Jurnal Penelitian Hasil Hutan Vol. 31 No. 2 (2013): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2013.31.2.120-140

Nowadays, the potency of conventional fibrous materials (ie, woods) for the manufacture of medium-density fiberboard (MDF) becomes depleted and scarce. Use of alternative fibers which are abundantly available and still largely unutilized, i.e. nypha midribs and coconut coirs, bas been attemped for MDF (medium-density fiberboard), using urea-formaldebryde (UF) adhesive However, such study showed that MDV from each of the two fiber sources could not satisfy the JIS and ISO standards. In relevant, improvement trial on MDF properties was accomplished using both kinds of fibers. Intially, those fiber stuffs had their basic properties examined, i.e. specific gravity, chemical composition, and fiber dimensions and their derived values. The MDF's fibrous pulping employed a bat semi-chemical soda process under atmospheric pressure at two alkali concentrations (8% and 12%). The resulting pulps were then added with additives, i.. 5% alum, 5% tannin formaldebryde (TF) adbesive either incorporated with activated charcoal (5%) or not; and then shaped into MDF mat using wet process, Physical-strength properties and formaldebryde emission of the resulted MDF wery examined. Assessing those properties, nypa-midrib fibers were more prospective for MDF than coconut-coir fibers, Activated- charcoal addition lowered MDF's formaldehyde emistion and improved dimensional stability, but decreased its strengths. In properties, MDF, from nypa fibers 100% were significantly the closest in satisfying the standard (JIS and LSO). Yet, coconut-enir fibers could still be prospective for MDF by missing them (pulp form) with wypa-fiber pulp at the propertion (w/w): 25%+75% and 50%+50%. The MDF with TF adhesive afforded better properties than the previous experiment (UF), n. greater strengths, lowered emotion and satisfying more of the 115 and ISO standard.

PEMBUATAN PULP UNTUK KERTAS BUNGKUS DARI BAHAN SERAT ALTERNATIF Dian Anggraini Indrawan; Lisna Efiyanti; Rossi Margareth Tampubolon; Han Roliadi
Jurnal Penelitian Hasil Hutan Vol. 33 No. 4 (2015): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.4.283-302

Indonesia's paper consumption, including wrapping paper, might steadily increase in the future and create challenge for domestic wrapping-paper production due to the dwindling potency of conventional fibrous stuffs (e.g. natural-forest woods). Alternative ligno-cellulosic fibers should be introduced, such as pioneer-tree woods potential for plantation-forest (PF), e.g. jabon and terentang; sengon PF's logging wastes; pulp/ paper mill's sludge; and pineapple-leaf fibers. In relevant, trial on pulp manufacture for wrapping paper was conducted using those alternatives. Initially, each alternative-fiber was examined for their basic properties (i.e. specific gravity, chemical composition, and fiber dimensions/ their derived values). The fibrous pulping employed a hot alk ali semi-chemical process (except sludge). The pulp-sheet with 60 g/ m basis-weight target was 2 formed from the mixture of jabon-wood pulp, terentang-wood pulp, sengon-wood pulp, sludge, and pineapple-leaf pulp (w/ w) in particular proportions; then to each proportion were added additives (alum 2%, clay 5%, wax emulsion 3%, tapioca starch 4%, and rosin soap 3%); and on the resulting pulp-sheets were tested their physical, strength, and optical properties. Results revealed that the proportion regarded as the most prospective for wrapping paper comprised terentang wood pulp (20%), jabon-wood pulp (20%), sengon-wood pulp (40%), and pineapple-leaf pulp (20%). The tolerable proportion for incorporating sludge should comprise sludge (20%), terentang-wood pulp (20%), jabon-wood pulp (20%), sengon-wood pulp (20%), and pineapple-leaf pulp (20%). The presence of harmful/ toxic heavy metals in the sludge which have been strongly indicated should thoroughly be accounted; and hence further experiment on their removal prior to the sludge use for wrapping paper deserves carrying out.

POTENSI TEKNIS PEMANFAATAN PELEPAH NIPAH DAN CAMPURANNYA DENGAN SABUT KELAPA UNTUK PEMBUATAN PAPAN SERAT BERKERAPATAN SEDANG Han Roliadi; Dian Anggraini Indrawan; Gustan Pari; Rossi Margareth Tampubolon
Jurnal Penelitian Hasil Hutan Vol. 30 No. 3 (2012): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2012.30.3.183-198

Indonesia's tropical natural forest woods are conventionally still raw materials for MDF, which in potency becomes depleted and scarce. Consequently, use of alternative fibrous materials deserves thorough consideration, with their potencies abundant and mostly still unutilized, such as Nypa frutican midrib and coconut coir. In relevant, an experiment was conducted to utilize both kinds of fiber for MDE Those fiber stuffs were each passed through the preparation, and examination of their basic properties (i.e. specific gravity, chemical composition, and fiber dimensions and their derived values). The fibrous pulping for MDF employed a bat semi-chemical soda process under atmospheric pressure, followed with the refining action to achieve pulp freeness at 600-700 mil CSF. The refined pulp were then added with additives (i.z. 4% alum, 3% UF-adbesive, 5% activated charcoal), and then shaped into MDF mat using wet process, followed with beat treatment, bot pressing, conditioning, and ultimately the testing of MDF properties. Scrutiny on MDF physico-strength properties revealed that nypa-midrib fibers were more prospective for MDF than coconut-coir fibers. Activated-charcoal addition lowered the MDF formaldehyde-emission, but decreased its strengths. In properties, MDFs from nyta fibers significantly outperformed those from coconut-cnir fibers in complying with the standard (JIS). Yet, connut-nir fs could still in prospective for MDF by mixing them (pulp form) with nypa-fiber pulp at the proportion (w/w): 25%+75 and 50%+50%

PENYEMPURNAAN SIFAT PAPAN SERAT BERKERAPATAN TINGGI DARI CAMPURAN RUMPUT GELAGAH, TANDAN KOSONG KELAPA SAWIT, DAN BAMBU Dian Anggraini Indrawan; Han Roliadi; Rossi Margareth Tampubolon; Gustan Pari; Adi Santoso; Mohamad Iqbal
Jurnal Penelitian Hasil Hutan Vol. 33 No. 3 (2015): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.3.193-214

Laboratory-scale manufactured hardboard made of Saccharum Sponaneoun Grasses (SSG), Empty Oil-palm Bunches (EOPB), and andong bamboo is potentially developed. However, initial experiment shows the hardboard did not meet Japanese Industrial Standard (JIS) and International Standard Organization (ISO) for hardboard. This paper observes modification of the hardboard to satisfy the standards. Modification includes adding alkali concentration during pulp cooking and changing the additives composition. Result shows modification can enhance the hardboard quality to satisfy JIS and ISO requirements. Fiber mixture of SSG pulp and andong/betung bamboo pulp was cooked in 10.5% alkali concentration; and 12% alkali concentration for EOPB pulp. Additives composition used were tannin-resorcinol formaldehyde/TRF adhesive, alum, and activated charcoal; without wax emulsion. The mixture of SSG pulp (50%) + EOPB pulp (50%) was the most prospective for hardboard, followed by SSG pulp (100%) solely; SSG pulp (50%) + andong bamboo pulp (50%); and SSG pulp (50%) + betung bamboo pulp (50%) as the lowest prospects. The least prospective fibrous material (betung bamboo) are expectedly be improved by using more TRF adhesive, nano-size activated charcoal and cross-linking agents.

KUALITAS HARDBOARD DUA JENIS BAMBU DENGAN TAMBAHAN TANIN RESORSINOL FORMALDEHIDA Dian Anggraini Indrawan; I.M. Sulastiningsih; Rossi Margareth Tampubolon; Gustan Pari; Adi Santoso
Jurnal Penelitian Hasil Hutan Vol. 35 No. 1 (2017): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2017.35.1.29-42

All kinds of ligno-cellulose fiber stuffs are technically suitable for hardboard manufacture. In Indonesia, currently the available conventional ligno-cellulose fibers (esp. tropical natural-forest woods) become scarce and depleted. Meanwhile, domestic fiberboard-production is lower than its demands. Alternative fibers, abundantly potential and largely still unutilized, should be introduced, e.g. bamboo. Research on bamboo utilization for hardboard has been carried out using two bamboo species i.e. tali bamboo (Gigantochloa apus) and ampel bamboo (Bambusa vulgaris). Each bamboo species was pulped using open hot-soda semi-chemical process. Five proportions of bamboo pulp mixtures were prepared from tali-bamboo pulp and ampel-bamboo pulps i.e: 100%+0%, 75%+25%, 50%+50%, 25%+75%, and 0%+100%. Tannin-resorcinol-formaldehyde (TRF) adhesive was added to each bamboo pulp mixtures at three different resin contents, i.e. 0%, 6% and 8% based on dry weight of the bamboo pulp mixture. Bamboo hardboards were manufactured using wet forming process and the resulted boards were then tested for their physical and mechanical properties. Results showed that addition of TRF (up to 8%) improved hardboard properties. Hardboard made from the ampel-bamboo pulp (100%) produced the highest hardboard quality, as its properties mostly conform with the standards (JIS and ISO) requirements for density, modulus of elasticity (MOE), modulus of rupture (MOR) and internal bond (IB); while hardboards made from tali-bamboo pulp (100%) possessed the lowest quality. Hardboard from tali-bamboo pulp and ampel-bamboo pulp mixture (at 50%+50% and 25% + 75% proportions) afforded the second and third performances. The least prospective tali-bamboo pulp (100%) could expectedly be improved by using more TRF.

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