Structural characteristics and sound absorption properties of different kinds of waste feather fibers

There are millions of tonnes of waste feathers every year from the booming poultry industry. To rationalize the utilization of waste feather resources, waste chicken feather fibers, waste duck feather fibers, and waste goose feather fibers were used as reinforcement materials, and polybutylene succinate was used as matrix materials to prepare sound absorbing composite materials. The acoustic impedance transfer function method was used to test the sound absorption performance of the sound absorbing composite materials with different feather fibers. The results showed that the sound absorbing composite materials with waste duck fibers had the best sound absorption performance. Fourier transform infrared spectrometer, X-ray diffraction, and scanning electron microscope were used to analyze the macromolecular structure, aggregation structure, and morphological structure of different kinds of waste feather fibers. According to the structure, the mechanism of sound absorption was analyzed, and the reason why the fibers of different kinds of waste feathers (chicken feather, duck feather and goose feather) had good sound absorption performance was clarified. It was clear that this unique structure endowed it with the characteristics of light weight and good sound absorption. So the waste feather fibers have high application value in the field of sound absorption.