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Korelasi antara Pola Ikatan Pembuluh dengan Sifat Fisis dan Mekanis Tiga Jenis Bambu (Correlation of Vascular Bundle Pattern with Physical and Mechanical Properties of Three Bamboo Species) Nani Nuriyatin; Surjono Surjokusumo
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 8, No 2 (2010): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.226 KB) | DOI: 10.51850/jitkt.v8i2.217

Abstract

The physical and mechanical properties of three species of bamboo, namely Dendrocalamus giganteus, Dendrocalamus asper, and Gigantochloa apus were investigated in relation to its vascular bundle pattern. As physical and mechanical properties, specific gravity, modulus of rupture (MOR), modulus of elasticity (MOE), compressive strength parallel to grain and tension strength parallel to grain were determined, and the vascular bundle pattern was evaluated by method according to Grosser and Liese (1971). The relationship between physical and mechanical properties with the vessel bundle pattern was analyzed by regression with dummy variables. Pattern combination of vessel bundle was found on G. apus and D. asper, while D. giganteus has a single pattern of vessel bundle type. The difference of vascular bundle pattern did not contributed to the physical and mechanical properties of bamboo investigated, except for MOR. The difference species of bamboo and vertical position of samples contribute to the different value of compressive strength parallel to grain, whereas tension strength was only affected by bamboo species
KEMUNGKINAN PEMANFAATAN BEBERAPA JENIS BAMBU TERTENTU, BERDASARKAN POLA PENYUSUNAN BERKAS PEMBULUH, SEBAGAI BAHAN BAKU PULP DAN KERTAS Nani Nuriyatin; Kurnia Sofyan
Jurnal Penelitian Hasil Hutan Vol. 29 No. 4 (2011): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2011.29.4.287-300

Abstract

The abundant availability of bamboos in Indonesia bas prompted their possible uses as raw material for pulp and paper. This is expected to replace its corresponding conventional raw materials (i.e. woods), which nowadays tend to be dwindling, scarce, and limited. In relevant, this research aims to assess the suitability of bamboo stem for such comprision several species. The grouping of bamboo species brought out the results,i.e. Arundinaria hundsii and Arundinaria javonica as pattern 1; Cephalostachyum pergracile and Melocanna baccifera as pattern 2; Dendrocalamus strictus and Dendrocalamus giganteus as pattern 3; and Dendrocalamus asper and Gigantochloa apus as patterns 3 and 4). In assessing the bamboo suitability for pulp and paper, an approach was taken whereby the bamboo species in the particular pattern was examined of fiber dimensions (i.e. fiber length, fiber flexibility, rigidity coefficient, Runkel ratio, and Mubistep ratio). To evaluate whether there were significant differences in the examination/ determination results among those 4 patterns, the analysis of variances (probability levels) with completely standardized one-factor design was employed followed with the different range test of the resulting means (Le. Tuckey procedures). The factor was those four bamboo patterns. Results revealed that each of those four patterns based on fiber length and felting power belonged to class I, indicating as the most favourable for pulp and paper. Meanwhile, other scrutiny based on fiber flexibility, rifidity coefficient, Runkel ratio, and Mublstep ratio turnd out that all the patterns belonged to class M. Further, bamboo species catagoried as pattern I exchibited species characters such as affording the bigbest fiber flessibility and lowest rigidity coefficient as well as runkel ratio compared to those of the alber patterns. Meanwhile, bamboo species in pattern 4 exhibited the bigbest fiber length and felting power. Ultimately, assessment on the overall fiber dimensions and their derived values came about that all the four bamboo pattern belonged to class III, as indicative qualities of the resulting pulp and paper However, to make sure whether such indication proved true, further in-depth research on the pulp and paper processing from those entire bamboos (pattern 1 until 4) deserves carrying out.