Pure keratin membrane and fibers from chicken feather

Abstract

In this research, keratin was extracted from the disposable chicken feather using l-cysteine as reducing agent. Then, it was re-dissolved in the sodium carbonate-sodium bicarbonate buffer, and the pure keratin membrane and fiber were fabricated by doctor-blade casting process and wet spinning method, respectively. Scanning electron microscopy (SEM), fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) and thermogravimetric analysis (TGA) were used to characterize the chemical and physical properties of resulting powder, membrane and fiber. Compared with the raw chicken feather, the regenerated keratin materials retain its chemical structure and thermal stability, their relative crystallinity is a little different depend on the shaping method, which leads to the difference in moisture regain. The mechanical results show that tensile strength of the keratin membrane researches 3.5MPa, have potential application in biomedical fields. However, the keratin fiber presents low tenacity, i.e. 0.5cN/dtex, this problem should be solved in order to apply the new fiber in textile and material science.

Study of Different Treatment Methods on Chicken Feather Biomass

“…2). After comparison of five samples, it was found that the characteristic peaks are similar with each other and are comparable with other studies [26]. On the other hand, the surfactants have little effect on the chemical structure of protein and all the treatments showed transmission bands to the peptide bonds (-CONH) and are known as Amide A, Amide I, Amide II, Amide III [10,27,28].…”

Tunable wettability and tensile strength of chitosan membranes using keratin microparticles as reinforcement

“…However, keratin particles prepared in our research was irregular in shape, and this is mainly ascribed to the processing method. In our previous research, the pristine precipitated keratin presented spheres with nanoscale, if the pristine precipitated keratin was re‐dispersed in proper solvent and dried by spraying method, the obtained keratin particles were supposed to possess nanospheres, like the results of Zhang et al . 's publication.…”

“…This is mainly due to the fact that pure keratin is fragile and has poor mechanical property . In our previous study, the tensile strength of the pure keratin membrane and fibers was only 3.5 MPa and 0.5 cN dtex −1 respectively, although the incorporation of the plasticizer makes the keratin material flexible, the exudation of the plasticizer is another difficult problem to be solved. Therefore, it was more beneficial to develop a keratin‐based composite material.…”

Modifying Properties of Feather Keratin Bioplastic Films Using Konjac Glucomannan

“…35 The peak at 1219 cm -1 is characteristic of the stretching vibrations of C-N (amide III). 36,37 By comparison of the spectra of pure keratin and konjac glucomannan films with those of the blended films, it can be seen that, with an increasing amount of glucomannan, the absorption bands at app. 3280 cm -1 and at 2924 cm -1 broadened and shifted to higher wave numbers, which confirmed the introduction of the -OH groups of glucomannan.…”