Development of fibrous materials applied in timber-framed construction using recycled fibers from textile waste.

The paper deals with the reuse of fibers from textile waste for the development of innovative and sustainable materials applied in the construction field. Currently, managing the high volumes of textile waste produced, and reducing the damage this waste does to the ecosystem, involves finding solutions for its reuse. Meanwhile, the construction sector has a great impact on the environment, and there is an urgent need to design innovative, sustainable building materials to reduce energy consumption and prevent the depletion of resources. In this context, the objective of the MOBIOTEX project is to develop new materials to replace the petrochemical-made vapor-barrier (VB) and rain-screen (RS) generally used in timber-frame construction (TFC). For that, nonwoven (NW) fabrics from textile waste were manufactured. Then, measurements based on standards for VB and RS were carried out on untreated and functionalized NW fabrics, to test their sealing and mechanical properties. Lamination of NW gives satisfactory results and some modified materials meet the requirements for both VB and RS applications and have similar properties as commercial products. These first results are quite promising as they show that, with some treatment, nonwoven from textile waste can be as technically efficient as commercial products. The different processes used during the MOBIOTEX project made it possible to build up the system boundary for the production of functionalized nonwoven in order to carry out future Life Cycle Assessment (LCA) and to compare with commercial products' LCA. In a circular economy approach, other characteristics such as durability, fire resistance and recyclability of such materials should be studied and optimized in order to reduce energy consumption and environmental impacts. Still, the main benefit of the developed materials, compared to commercial petrochemical rain-screens and vapor barriers, is on the production of raw materials, because it involves less exploitation of non-renewable resources, as an important part of materials come from waste, and the application in timber-framed construction can be a positive way in which to reuse a non-negligible volume of waste from the textile industry. [ABSTRACT FROM AUTHOR]