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Influences of Recycled Polyethylene Terephthalate Microplastic on the Hygrothermal and Mechanical Performance of Plasterboard with Polymethylhydrosiloxane Content

Materials 2024 1 citation ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Victoria Romano-Matos, Alain Tundidor‐Camba, Sergio Vera, Iván Navarrete, Álvaro Videla

Summary

Researchers analyzed the hygrothermal and mechanical performance of plasterboard composites incorporating recycled PET microplastics alongside polymethylhydrosiloxane content, developing new sustainable construction materials from plastic waste. The study found that PET microplastic addition altered moisture absorption and mechanical strength properties of the plasterboard, with performance depending on both PET content and siloxane modifier levels.

Polymers

New composites produced with recycled waste are needed to manufacture more sustainable construction materials. This paper aimed to analyze the hygrothermal and mechanical performance of plasterboard with a polymethylhydrosiloxane (PMHS) content, incorporating recycled PET microplastic waste and varying factors such as PMHS dose, homogenization time, and drying temperature after setting. A cube-centered experimental design matrix was performed. The crystal morphology, porosity, fluidity, water absorption, flexural strength, and thermal conductivity of plasterboards were measured. The results showed that incorporating recycled PET microplastics does not produce a significant difference in the absorption and flexural strength of plasterboards. However, the addition of recycled PET reduced the thermal conductivity of plasterboards by around 10%.

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