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:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor. SB261 R3R237 1984 Call Number
AGROVOC Term:	Canes and rattans
AGROVOC Term:	Calamus spp
AGROVOC Term:	Plant anatomy
AGROVOC Term:	Plant structure
AGROVOC Term:	Utilization
AGROVOC Term:	Forest products
AGROVOC Term:	Indonesia
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/12249

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