Improvement on Several Physical and Mechanical Properties of Jati Utama Nusantara Wood by Thermal Compression Treatment

Basri, Efrida; Saefudin, Saefudin

doi:10.20886/jphh.2021.39.3.121-128

Cited by 1 publication

(1 citation statement)

References 8 publications

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“…These phenomena were confirmed by other related research (Mubarok et al 2020;Basri and Saefudin 2021;Kurkowiak et al 2021), which described the ester bonds between G and CA as more optimally occurring at temperatures above 150 °C. The reduction of the amorphous part (disoriented cellulose chain polymer aggregates mixed with short-chain hemicellulose polymers) due to heat treatment at 180 °C would bring the microfibrils or fibrils parallel and close to each other, forming crystallites, thus strengthening the wood structure (Sjostrom 1993;Basri and Saefudin 2021). The increase in WPG values of thermally modified SRT woods was in line with the increase in their density (Table 2).…”

Section: Physical Propertiessupporting

confidence: 83%

Enhancement on physicomechanical properties of short-rotation teak woods by non-biocide chemical and thermal treatments

Basri,

Rahayu,

Saefudin

et al. 2024

BioRes

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Lactic acid (LA), citric acid (CA), and glycerol (G) are renewable and environmentally friendly chemicals that could improve the qualities of short-rotation teak (SRT) woods. This study investigated the effect of thermal and chemical modification using 20% aqueous solutions (w/w) of LA, CA, and G and their mixtures in the same composition on physical and mechanical properties of SRT teak wood. The impregnation process was initiated by vacuum process for 1 h and pressure (12.2 bar) for 2 h, followed by thermal (150 °C) treatment for 6 h on the SRT wood samples after being removed from the vacuum-pressure tube. Retention (R), weight percent gain (WPG), density (D), anti-swelling efficiency (ASE), leachability (WL), modulus of elasticity (MOE), and modulus of rupture (MOR) were measured. FTIR spectrometry and SEM analyses were performed. The wood impregnated with a mixture of 10% LA + 10% CA provided the highest ASE values of 50.1%, and the lowest leaching resistance of 1.54%. Based on wood strengths (MOE and MOR) and physical properties, as well as supported by FTIR and SEM analysis, the use of 10% LA + 10% CA is the most prospective as an impregnant formula for SRT wood modification of this research.

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