Characterization of superfine down powder

Xu, Weilin; Wang, Xin; Cui, Weigang; Peng, Xuqiang; Li, Wenbin; Liu, Xin

doi:10.1002/app.29205

Cited by 16 publications

(9 citation statements)

References 16 publications

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“…We noted that the NSNDPs exhibited a white colour just like that of natural down fibres (Figure 1c), which suggested that the native properties of the down fibres were not adversely affected and were preserved well during the manufacturing process. The results were consistent with results previously reported in the literature [16,19]. Further, it can be seen that most of the NSNDPs had diameters of 1-2 lm and aspect ratios of 20-100.…”

Section: Resultssupporting

confidence: 92%

The adsorption performance of Vat Scarlet R on natural superfine needle down particles

Chen

Liu

et al. 2016

Coloration Technology

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Natural superfine needle down particles were successfully prepared on a self‐made machine and applied to remove hazardous dye Vat Scarlet R from aqueous solution. The adsorbent was characterised by scanning electron microscopy and Fourier transform infrared spectroscopy. The effects of contact time, pH, adsorbent dosage, initial dye concentration, and temperature on dye adsorption on natural superfine needle down particles were discussed. Equilibrium adsorption studies revealed that the Langmuir isotherm model gave the best fit to experimental data, which indicates monolayer adsorption on a homogeneous surface. The monolayer adsorption capacity increased with increasing temperature in the range 298–318 K for Vat Scarlet R adsorption, and the maximum obtained adsorption capacity was 76.823 mg g−1 at 318 K. The present study suggested that natural superfine needle down particles could be used as a good and cheaper adsorbent for dye effluent treatment.

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Section: Resultssupporting

confidence: 92%

The adsorption performance of Vat Scarlet R on natural superfine needle down particles

Chen

Liu

et al. 2016

Coloration Technology

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“…The active groups of the zirconium oxychloride and down fibers combined firmly via chemical bonding, which imparted the modified down with a durable warmth retention property. The two spectra exhibit similar absorption bands at approximately 3281 (N-H and O-H), 2923 (-CH 2 ), 1633 (amide I), 1516 (amide II), and 1236 cm -1 (amide III) [23]. Therefore, the modification does not destroy the surface structure of the down fiber, and its natural shape remains intact.…”

Section: Ftir Analysis Of Modified Downmentioning

confidence: 92%

Preparation and Warmth Retention of down Fiber Grafted with Zirconium Oxychloride

Lü

2017

Journal of Engineered Fibers and Fabrics

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A new product, referred to herein as modified down, was produced by grafting down fiber with zirconium oxychloride. Grafting modification brings new functionalities to down fiber. For example, the warmth retention of modified down is greatly improved. The reaction mechanism and reason for the improved warmth retention of the modified down was investigated. Using response surface methodology (RSM), we found that the optimal preparation conditions for modified down were 15.1% zirconium oxychloride, 15.06% sodium tripolyphosphate, and 1.39 h duration. The warmth retention of the modified down was 80.95%, the CLO value increased by 35.38%, the thermal resistance increased by 35.43%, the filling power substantially increased by 31.35%. The zirconium oxychloride was successfully modified and grafted onto the down fiber, as was confirmed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The ultimate residual quantities of the modified down fibers were 30.06%. The results show that the active groups of zirconium and down fibers firmly combined via chemical bonds, which made the warmth retention of modified down a lasting property.

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“…Furthermore, down feather dimensions (highly order, hierarchical branched structures) make it unsuitable for producing thermoplastic protein films. In this context, down feather was cut into small pieces of fiber and then ground into down feather fiber (SDP), which has the size distribution between 0.2-12μm and the average particle size of 2.34μm [12]. Based on our previous study, down feather fiber has nearly 14 times the specific surface area of down feather and was blended with polypropylene and polyurethane respectively [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Characterizations of Thermoplastic Protein Films from Down Feather Fiber

Zhang¹,

Yang²,

Lv³

et al. 2017

JTEFT

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Down feather fiber was modified by formamide which acts as a plasticizer and then hot-pressed into thermoplastic down films. After hot-pressed, the mechanical properties of thermoplastic down films had a close relationship with the exposure time periods. The maximum tensile strength of thermoplastic down films can reach 28.74 MPa after exposure to atmosphere for 40 days. ATR-FTIR curves proved that there were hydrogen bonds forming between amino and amide groups of down feather fiber and formamide. WXRD patterns showed that the crystalline region of down feather fiber was destroyed by formamide during hot-pressing and then reformed after exposure to atmosphere for several days. TGA curves showed that thermoplastic down films has lower moisture compared with down feather fiber suggesting that high temperature removed the most of hydrogen-bound water in down feather fiber and then there are chemical reaction between down feather fiber and formamide.

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Characterization of superfine down powder

Cited by 16 publications

References 16 publications

The adsorption performance of Vat Scarlet R on natural superfine needle down particles

The adsorption performance of Vat Scarlet R on natural superfine needle down particles

Preparation and Warmth Retention of down Fiber Grafted with Zirconium Oxychloride

Characterizations of Thermoplastic Protein Films from Down Feather Fiber

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