An Extensive Study of an Eco-Friendly Fireproofing Process of Lignocellulosic Miscanthus × giganteus Particles and Their Application in Flame-Retardant Panels

Polymers, Journal Year: 2025, Volume and Issue: 17(2), P. 241 - 241

Published: Jan. 19, 2025

Increasing the flame retardancy of lignocellulosic materials such as Miscanthus × giganteus can effectively enable their wide use. This study examines fireproofing process particles using an eco-friendly by grafting phytic acid and urea in aqueous solution. underwent a steam explosion step before being grafted. Fireproof binderless particle panels were manufactured from miscanthus with or without adding olive pomace hot-pressing. The effect and/or flame-retardant treatment on morphology, chemical composition thermal stability particles, well panels, was investigated. results showed that water impregnation followed at 210 °C for 8 min resulted rich lignin more homogeneous size (length width). produced relatively low P N contents. significantly improved when treated urea, shown reduced heat release (HRR) increased time-to-ignition. However, presence decreased panels. Binderless prepared grafted best fire properties are considered fireproof.

Language: Английский

Low-Alpha-Cellulose-Based Membranes

Polymers, Journal Year: 2025, Volume and Issue: 17(5), P. 598 - 598

Published: Feb. 24, 2025

Depending on the method of cellulose production, proportion alpha fraction in it can vary significantly. Paper pulp, unlike dissolving cellulose, has an less than 90%. The presence satellites system does not impede formation concentrated solutions N-methylmorpholine-N-oxide (NMMO). In current study, spinning based with a low (up to 90%) (pulp cellulose) are investigated. morphological features and rheological behavior such examined. It is suggested roll obtained order obtain membranes. X-ray diffraction, IR spectroscopy, AFM SEM were used investigate resulting structure morphology shown that degree crystallinity for membranes varies impurity content sample. films characterized by dense texture absence vacuoles. highest strength elastic modulus found made bleached hardwood sulfate 5.7 MPa 6.4 GPa, respectively. maximum values contact angle (48°) higher lignin. lignin leads increase rejection anionic dyes Orange II Remazol Brilliant Blue R.

Language: Английский

Insight on dissolution performance of high purity cellulose in N-methyl morpholine-N-oxide aqueous solution with assistance of ultrasonication treatment

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 144138 - 144138

Published: May 1, 2025

Language: Английский