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Optimization of Thermal Insulation and Air Permeability of Recycled Polyamide-Based Fibrous Building Panels through Full Factorial Experimental Design

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Abstract:

Today, the solid waste problem is expanding at an alarming rate, and considering the scale of production and consumption, the textile industry contributes significantly to this waste. An indispensable component of fast fashion, polyamide-containing pantyhose are included in the disposable product group and cause irreversible loss of a very valuable raw material. The waste of this product group constitutes a hidden waste group that does not decompose in nature and has not yet been recycled. This study focuses on recycling polyamide-containing pantyhose waste and evaluating them in thermal insulation panel production. In this context, the process of opening the fibers of the pantyhose is carried out in a carding machine, and a hot press technique is utilized with the addition of low melting temperature polypropylene fibers as a binder, for panel production. Rice husk, which is a commonly known agricultural waste, is also introduced into the panels in different forms (granule and powder) for better air encapsulation. The effect of ply number (two and four) and the form of rice husk added as an additive on thermal and air permeability properties is examined within the framework of a full factorial experimental design plan. The findings obtained reveal that the variables affect both thermal insulation and air permeability properties both individually and in binary interactions. The lowest thermal insulation coefficient is obtained in the two plied, granule form rice husk added sample group (0.02117 W/mK), which also has the highest air permeability values (442.57 l/m2/s) and the results are found to be competitive with commercial products. This suggests that it is possible to use this waste group in sustainable panels for construction, and the findings reveal that it may create value in terms of both solid waste management and exploring new resources for polyamide-based fibrous products.

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Periodical:

Key Engineering Materials (Volume 1046)

Pages:

69-74

DOI:

https://doi.org/10.4028/p-Z6NsuV

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Online since:

March 2026

Authors:

Ipek Yalçın-Eniş*, Hande Sezgin

Keywords:

Pantyhose, Polyamide, Rice Husk, Textile Waste, Thermal Insulation

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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