A comparative study of carbon microsphere preparation by the hydrothermal carbonization of waste cotton fibers, viscose fibers and Avicel

Carbon ◽  
2021 ◽  
Vol 171 ◽  
pp. 981-982
Author(s):  
Yong-fang Zhang ◽  
Jin-ming Dai ◽  
Hong Guo ◽  
Sheng She ◽  
Zhi-feng Yan ◽  
...  
Keyword(s):  
Comparative Study ◽  
Hydrothermal Carbonization ◽  
Cotton Fibers ◽  
Carbon Microsphere ◽  
Viscose Fibers ◽  
Microsphere Preparation

Hydrothermal carbonization characteristics of sewage sludge and lignocellulosic biomass. A comparative study

2019 ◽  
Vol 120 ◽  
pp. 166-175 ◽  
Author(s):  
Małgorzata Wilk ◽  
Aneta Magdziarz ◽  
Kandasamy Jayaraman ◽  
Monika Szymańska-Chargot ◽  
Iskender Gökalp
Keyword(s):  
Sewage Sludge ◽  
Comparative Study ◽  
Lignocellulosic Biomass ◽  
Hydrothermal Carbonization

X-Ray Orientation of Equatorial Planes in Swollen and Stretched Cellulosic Fibers

1988 ◽  
Vol 58 (5) ◽  
pp. 299-301 ◽  
Author(s):  
S. Sreenivasan ◽  
K. R. Krishna Iyer ◽  
P. K. Chidambareswaran ◽  
N. B. Patil
Keyword(s):  
Cotton Fibers ◽  
Cellulose I ◽  
X Ray ◽  
Cellulosic Fibers ◽  
Viscose Fibers

X-ray orientation profiles were recorded that pertained to the three equatorial planes from cotton fibers containing both cellulose I and II lattices and from viscose fibers. The changes in orientation brought about by swelling and stretching treatments could be accurately followed by studying the distribution of any one of the diffraction arcs.

Comparative study of the properties of differently decrystallized and crosslinked cotton fibers

1980 ◽  
Vol 25 (12) ◽  
pp. 2951-2959 ◽  
Author(s):  
P. Bhama Iyer ◽  
K. R. Krishna Iyer ◽  
N. B. Patil
Keyword(s):  
Comparative Study ◽  
Cotton Fibers

scholarly journals Absorbent Properties of Carboxymethylated Fiber, Hydroentangled Nonwoven and Regenerated Cellulose: A Comparative Study

2017 ◽  
Vol 12 (4) ◽  
pp. 155892501701200 ◽  
Author(s):  
Michael Easson ◽  
Andres Villalpando ◽  
Brian D. Condon
Keyword(s):  
Comparative Study ◽  
Water Retention ◽  
Spectroscopic Properties ◽  
Degree Of Substitution ◽  
Cotton Fibers ◽  
Regenerated Cellulose ◽  
Cellulose Materials

Commercially-available, bleached cotton fibers, rayon, and their hydroentangled counterparts were carboxymethylated to produce cellulosic products with increased absorbency. These cellulose materials were tested for absorbance, spectroscopic properties, degree of substitution and carding ability. Carboxymethylated fibers and hydroentangled webs exhibited increased water retention as the degree of substitution increased before losing fiber integrity and carding ability.

The Effect of Calcium-Based Salt on Hydrothermal Carbonization of Corncob

2017 ◽  
Vol 751 ◽  
pp. 477-482
Author(s):  
Promporn Reangchim ◽  
Kamonwat Nakason ◽  
Nawin Viriya-Empikul ◽  
Apiluck Eiad-Ua
Keyword(s):  
Reaction Medium ◽  
Value Added ◽  
Hydrothermal Carbonization ◽  
Raw Material ◽  
Cellulose Crystallinity ◽  
X Ray Diffraction ◽  
Pretreatment Method ◽  
X Ray ◽  
Carbon Microsphere ◽  
Scanning Electron

Corncob represents a great potential as a raw material for the production of high-value added chemicals, fuels and other industrial products. Thus, corncob is suitable residue for study molecular structure through the pretreatment method. In this study, the effect of calcium-based salts on the hydrothermal carbonization (HTC) of corncob were studied at 160, 180, and 200 °C for 2 h. CaSO4 and Ca3(PO4)2 were used as a reaction medium. Hydrochar was characterized by Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and ATR-Fourier transform infrared spectroscopy (ATR-FTIR). Characteristics of the hydrochar varied with calcium-based salt. Cellulose crystallinity in hydrochar decreased dramatically and carbon content in hydrochar obviously increased when Ca3(PO4)2 and CaSO4 were added, respectively. In case of hydrothermal at 180°C with Ca3(PO4)2 and CaSO4, the carbon microsphere was occurred.

scholarly journals Comparative Study of Triboelectric Nanogenerators with Differently Woven Cotton Textiles for Wearable Electronics

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1443 ◽  
Author(s):  
Jaebum Jeong ◽  
Jin-Hyuk Kwon ◽  
Kyungmin Lim ◽  
Swarup Biswas ◽  
Alexandra Tibaldi ◽  
...  
Keyword(s):  
Comparative Study ◽  
Cotton Fiber ◽  
Output Voltage ◽  
Electrical Performance ◽  
Cotton Fibers ◽  
Wearable Electronics ◽  
Charge Generation ◽  
Cotton Textiles ◽  
The Difference ◽  
Triboelectric Nanogenerators

A comparative study of the electrical performance of triboelectric nanogenerators (TENGs) with plain- and 2/1 twill-woven cotton textiles was conducted. Furthermore, the microstructures of the cotton fiber surfaces were examined to understand the fundamental mechanical interaction among the cotton fibers in the TENGs. The TENG with 2/1 twill-woven cotton textiles exhibited higher output voltages compared to that with plain-woven cotton textiles. The difference in the output voltage between the two types of TENGs resulted from the difference in triboelectric charge generation between the constituent cotton textiles. The higher output voltage of the TENG with 2/1 twill-woven cotton textiles was attributed to the higher density in triboelectric interactions among the cotton fiber molecules.

scholarly journals Evolution of Physicochemical Structure of Waste Cotton Fiber (Hydrochar) During Hydrothermal Carbonation

2020 ◽  
Vol 20 (3) ◽  
pp. 319-326
Author(s):  
Shi Sheng ◽  
Zhang Meiling ◽  
Zhang Suying ◽  
Hou Wensheng ◽  
Yan Zhifeng
Keyword(s):  
High Temperature ◽  
Cotton Fiber ◽  
Structural Evolution ◽  
Hydrothermal Carbonization ◽  
Cotton Fibers ◽  
Hydrothermal Conditions ◽  
Important Intermediate ◽  
Temperature And Pressure ◽  
Waste Cotton Fiber ◽  
Hydrolysis Of

AbstractTo study the hydrothermal behavior of cotton fiber, the carbonization process and structural evolution of discarded or waste cotton fiber (WCF) under hydrothermal conditions were investigated using microcrystalline cellulose (MCC), and glucose was used as a model compound. Results showed that high temperature was beneficial for the hydrolysis of discarded cotton fiber, and the yield of sugar was 4.5%, which was lower than that of MCC (6.51%). WCF and MCC were carbonized at 240–~260°C and 220–~240°C, respectively, whereas the carbonization temperature of glucose was lower than 220°C. The C/O ratios of WCF and glucose hydrothermal products were 5.79 and 5.85, respectively. The three kinds of hydrothermal carbonization products had similar crystal structures and oxygen-containing functional groups. The carbonized products of WCF contained many irregular particles, while the main products of glucose carbonization were 0.5-mm-sized carbon microspheres (CMSs). Results showed that glucose was an important intermediate in WCF carbonization and that there were two main pathways of hydrothermal carbonization of cotton fibers: some cotton fibers were completely hydrolyzed into glucose accompanied by nucleation and then the growth of CMSs. For the other part, the glucose ring of the oligosaccharide, formed by the incomplete hydrolysis of cotton fibers under hydrothermal conditions of high temperature and pressure, breaks and then forms particulate matter.

Sign in / Sign up

Export Citation Format

Share Document