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Description
Cigarette filters constitute a significant fraction of persistent urban waste, raising growing environmental concerns due to their widespread disposal and limited recycling pathways. In this context, their potential reuse as porous materials for acoustic applications have attracted increasing attention.This work explores the role of different binding agents in the development of acoustic materials derived from used cigarette filters. The incorporation of binders is considered as a strategy to improve the mechanical integrity and handling of the samples, which are typically affected by the intrinsic heterogeneity of the raw material and the processing methods. At the same time, the addition of binders may alter the internal structure of the material, potentially influencing its sound absorption performance.Several types of binders are evaluated, with particular attention to their impact on key acoustic properties. The study aims to identify trends relating binder type and concentration with the resulting acoustic behaviour, as well as to assess the balance between structural stability and acoustic efficiency.Preliminary observations suggest that the selection and dosage of the binder play a critical role in determining the final performance of the material. Further work will complete the experimental assessment and consolidate the comparative analysis.