Pulpbaffle

Pulpbaffle is a modular wall system composed of acoustic blocks produced through additive manufacturing using natural materials such as cellulose, starch, and cork. Designed to adapt to different spatial configurations, the prototype aims to absorb or reflect sound, offering a sustainable, flexible, and circular solution for acoustic control in interior environments.

The project responds to the growing need to replace conventional building materials with biodegradable, recyclable, and reusable alternatives, exploring the potential of cellulose, an abundant and renewable resource, to enhance acoustic performance while reducing environmental impact.

By combining parametric digital design with material optimization, the research develops corrugated and modular geometries capable of achieving diverse acoustic behaviors, from absorption to diffusion and reflection. Using computational tools and genetic optimization algorithms, the design process refines the forms and structures to maximize acoustic efficiency.

The fabrication process was thoroughly investigated, addressing material composition, structural performance, and the challenges of shrinkage and deformation inherent to paste-based additive manufacturing. The result is a scalable and adaptable acoustic system aligned with circular economy principles, offering a viable and ecological alternative for contemporary architectural applications.

The prototype was showcased at Critical Practices exhibition, ICSA 2025, Antwerp.

RESEARCH TEAM

Tatiana Campos (design and production), Paulo J.S.Cruz (coordination), Bruno Figueiredo (coordination), João Ribeiro (production).