THERMOGRAVIMETRIC ANALYSIS AND WEATHERING STUDY BY WATER IMMERSION OF ALKALI-TREATED BAMBOO STRIPS

BioResources

关键词: Lignocellulosics;    Fiber Modification;    Composites;   

DOI  :  

来源: DOAJ

【 摘 要 】

The effects of alkali treatment on the thermal degradation and weather-ing properties of bamboo strips were investigated in this work. Dried bamboo strips with average dimensions of 100 x 15 x (1.1-1.5) mm were mercerized with caustic soda solution (10%, 15%, 20%, and 25%) (w/v) at ambient temperature, maintaining a liquor-to-solids ratio of 15:1. All types of bamboo specimens were subjected to thermogravimetric anal-ysis and accelerated weathering by water immersion and further char-acterized by flexural property measurements. Water absorption and dimensional changes were recorded at 100% humidity, room temper-ature, and atmospheric pressure. The results showed that the treated bamboo strips had a higher deterioration in flexural properties compared to the untreated ones. Thermogravimetric analysis of all the samples indicated better thermal properties of alkali-treated samples. The highest activation energy was observed with a 15% alkali-treated bamboo sample.

【 授权许可】

Unknown