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The study aims to optimize mild alkali treatment and assess cultivar effects on rice straw properties.

March 21, 2026Fibers and PolymersOpen Access

Optimization of Mild Alkali Treatment and Effect of Cultivar on the Structural, Morphological, and Thermal Properties of Rice Straw Particles as Potential Biocomposite Reinforcements

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Optimizes alkali treatment effects on rice straw properties, indicating its potential for biocomposite use.

The study aims to optimize mild alkali treatment and assess cultivar effects on rice straw properties.
Mild alkali treatment of rice straw culm particles using NaOH at varying concentrations.
Central composite design for response surface optimization.
Structural and chemical analyses to assess changes in composition.
Evaluation of thermal properties and morphological characteristics for two cultivars.
Optimal treatment conditions were 1.50 wt% NaOH for about 11 hours.
Achieved solid yields were 50.85% for Japonica and 55.32% for Indica rice straw.
Significant reductions in ash by 83% and 80% and silica by 78% and 73% were noted, respectively.
Improvement in thermal properties with shifts in decomposition temperatures for treated particles.

Akatwijuka et al. (2026) studied this question.

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