Anatomy strength properties and the utilization of some Indonesian rattans

Yudodibroto H ., . (1985) Anatomy strength properties and the utilization of some Indonesian rattans. [Proceedings Paper]

Three calamus species growing naturally in Sulawesi Indonesia were investigated for their anatomical characteristics strength properties and utilization. Sclerenchyma cells surrounding vascular bundles which function as mechanical supporting elements have been enumerated on cross-sections of stems of three rattan species. Percentage wise Calamus inops had 43.9 of its total cross-section covered with sclerenchyma cells C. symphysipus had 25.8 and a third species of Calamus had 28.4. Tensile strengths of their bark were respectively 1239.15 kg/cm 830.81 kg/ and 847.34 kg/cm. The corresponding figures for their cores were 872.85 kg/cm 755.61 kg/cm and 771.70 kg/cm respectively. Evidently preference for usage of rattans for certain purposes was given a stronger rattans species. Calamus inops was used for furniture mats woven handicrafts etc. Calamus symphysipus was used for similar items but of a lower quality. The species of Calamus known in Sulawesi as Rotan tinti buku was used for cordage basketry etc. Prior to usage rattan canes were usually bleached with certain chemicals to have a fair colour and an adequate lustre. Their strength properties however were affected. The stronger the bleaching agent and the longer the bleaching period the paler the colour and the more lustrous the canes became but the strength properties were lower

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Abstract

Three calamus species growing naturally in Sulawesi Indonesia were investigated for their anatomical characteristics strength properties and utilization. Sclerenchyma cells surrounding vascular bundles which function as mechanical supporting elements have been enumerated on cross-sections of stems of three rattan species. Percentage wise Calamus inops had 43.9 of its total cross-section covered with sclerenchyma cells C. symphysipus had 25.8 and a third species of Calamus had 28.4. Tensile strengths of their bark were respectively 1239.15 kg/cm 830.81 kg/ and 847.34 kg/cm. The corresponding figures for their cores were 872.85 kg/cm 755.61 kg/cm and 771.70 kg/cm respectively. Evidently preference for usage of rattans for certain purposes was given a stronger rattans species. Calamus inops was used for furniture mats woven handicrafts etc. Calamus symphysipus was used for similar items but of a lower quality. The species of Calamus known in Sulawesi as Rotan tinti buku was used for cordage basketry etc. Prior to usage rattan canes were usually bleached with certain chemicals to have a fair colour and an adequate lustre. Their strength properties however were affected. The stronger the bleaching agent and the longer the bleaching period the paler the colour and the more lustrous the canes became but the strength properties were lower

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Item Type:	Proceedings Paper
Additional Information:	11 ref. Summary En
AGROVOC Term:	RATAN
AGROVOC Term:	JUNCOS
AGROVOC Term:	ANATOMIA DE LA PLANTA
AGROVOC Term:	RESISTENCIA MECANICA
AGROVOC Term:	INDONESIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:25
URI:	http://webagris.upm.edu.my/id/eprint/14211

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