Effects of different bleaching conditions on the bending tolerance of two rattan species (Calamus merrillii Becc. and C. caesius Blume)

Issue Date

6-2009

Abstract

Following bleaching treatment under varying conditions, scraped poles of sika (Calamus caesius Blume) and palasan (C. merrillii Becc.) were tested to determine their breaking radius of curvature. Variables include bleaching agents, soaking time, and temperature using a 3 × 3 × 3 factorial in a Completely Randomized Design experiment. Bent poles that were least and most negatively affected by bleaching, along with unbleached control samples, were taken for chemical analysis and fiber measurement. Flexural properties of sika were unaffected by the different temperature levels employed while palasan was only affected by the bleaching agent used. Interactions among the three variables were found to be insignificant in sika but were highly significant in palasan. Proximate chemical analysis showed that the bending tolerance of sika and palasan poles that was most negatively affected by bleaching treatment had significantly lower holocellulose content but higher ash, hot water, and 1% NaOH soluble fractions than the control and the least affected poles. Fiber analysis revealed that only the fiber length of palasan was affected by bleaching.

Source or Periodical Title

Philippine Journal of Science

ISSN

317683

Volume

138

Issue

1

Page

81-90

Document Type

Article

College

College of Forestry and Natural Resources (CFNR)

Language

English

Subject

Bending tolerance, Bleaching, Breaking radius, Fiber measurements, Proximate chemical analysis, Rattan

Digital Copy

YES

Link to Full Text

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