| Abstract:This study systematically investigates the application of bamboo (Phyllostachys edulis) in chemical thermal mechanical pulp (CTMP) production, focusing on process optimization and performance evaluation. By adjusting NaOH dosage (5%-20%) and steam cooking pressure (450-600 kPa), the physical strength indices of bamboo CTMP pulp were analyzed, and its potential in packaging boxboard paper production based on waste paper resources was explored. Results indicate that the dense structure of bamboo directly correlates with softening efficiency: at 10% NaOH dosage, the pulp exhibits optimal performance, with bursting index, folding endurance, and ring-crush resistance index reaching peak values of 1.29 kPa·m2·g?1, 4 times, and 8.96 N·m·g?1, respectively. Increasing steam pressure from 450 to 600 kPa slightly improved certain indices (e.g., bursting index increased to 1.44 kPa·m2·g?1), but the overall enhancement was marginal, confirming NaOH dosage as the dominant factor. This research provides a technical foundation for utilizing bamboo CTMP as a partial substitute for waste paper, addressing fiber resource scarcity while improving cost efficiency for paper enterprises. It also aligns with the national "Bamboo-for-Plastics" initiative, promoting sustainable development in the pulp and paper industry. |