Author

R. de Ávila Delucis

2 papers indexed here

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Open access Sep 2026

Cellulose Nanocrystals as Nucleating Agents in Lignin-Based Rigid Polyurethane Foams

This study investigates the incorporation of cellulose nanocrystals (CNC) into rigid polyurethane foams (RPUF) derived from lignin polyol. CNC promoted cellular refinement consistent with a heterogeneous nucleation mechanism, reducing average cell size by up to 18% and improving cellular uniformity, particularly at 0...

K. Barbosa, Raphael Duarte Gimnecki, S. Amico et al. · ACS Omega · 0 citations

Review Open access Sep 2026

Durability of Natural Fiber-Reinforced Geopolymer and Alkali-Activated Composites: A Systematic Review of Degradation Mechanisms and Design Controlling Factors

Natural fiber-reinforced geopolymer and alkali-activated composites have emerged as promising alternatives for reducing the environmental impact of cement-based materials; however, their long-term durability remains insufficiently understood. This systematic review evaluates the durability behaviour of natural fiber-re...

Rafael Gonçalves Hammes, T. A. da Silveira, Rafaella dos Passos Nörnberg et al. · Ceramics · 0 citations