Isolation and characterization of nanocrystalline cellulose from different precursor materials

Lee, Byoung‐Min; Jeun, Joon‐Pyo; Kang, Phil‐Hyun; Choi, Jae‐Hak; Hong, Sung–Kwon

doi:10.1007/s12221-017-6548-6

Cited by 30 publications

(23 citation statements)

References 33 publications

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“…The significant parameters that influenced the nature of CNW and the stability of CNW suspension were the concentration of sulfuric acid, hydrolysis time and temperature 42 . Most references reported that the concentration of acid was 50%–65%, the hydrolysis time was 30–120 min and temperature was 40–50°C 24–27 . In this article, the hydrolysis temperature was set as 46°C.…”

Section: Resultsmentioning

confidence: 98%

“…With the extension of hydrolysis time, the size of CNW became smaller and size distribution became narrower. The noncrystal region and crystal defect of cellulose were hydrolyzed gradually with the increases of hydrolysis time, 24 so the size of resultant CNW was smaller.…”

Section: Resultsmentioning

confidence: 99%

“…CNW had been prepared from a crowd of natural sources including wood, 14,15 cotton, 5,16–18 microcrystalline cellulose, 19–22 bacterial cellulose, 23 agriculture residues, 24–29 and sea animals 30,31 . Owning to the high strength and the high specific surface area, CNW was often used as reinforcement in nanocomposites 3 .…”

Section: Introductionmentioning

confidence: 99%

“…Agricultural residues were considered as a big source of cellulose and they were important materials of CNW. For example, rice straw had been selected as raw material to isolate CNW and the acid hydrolysis time in H 2 SO 4 was investigated 24 . Maize stalk had been chosen to prepare CNW via 50% H 2 SO 4 hydrolysis at 40°C for 30 min 25 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On the use of cellulose nanowhisker as reinforcement in all‐cellulose composite membrane from corn stalk

Tian

Sun

2020

J of Applied Polymer Sci

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All‐cellulose composite (ACC) membranes were prepared with cellulose and cellulose nano whisker (CNW) extracted from corn stalk by using NaOH/thiourea as solvent. CNW was isolated via acid hydrolysis method and the yield, size distribution and morphology of CNW were investigated. ACC Membranes were characterized via SEM, XRD, TGA as well as water flux and were further plasticized with glycerol aqueous solution. The mechanical property and transparency of ACC membranes before and after plasticization were compared. CNW prepared with 63% sulfuric acid for 60 min of hydrolysis time had the biggest ratio of length to diameter and moderate yield. ACC membrane with 5% CNW content had the highest tensile strength and the structure of ACC membranes was observed clearly in SEM images. TGA testing indicated that the initial degradation temperature tended to lower after CNW was introduced into membrane. ACC membrane had good optical transmittance and good flexibility after plasticization.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the use of cellulose nanowhisker as reinforcement in all‐cellulose composite membrane from corn stalk

Tian

Sun

2020

J of Applied Polymer Sci

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“…The interlayer spacing (d) of (002) planes and the crystalline size (L c ) were calculated using Bragg's and Scherrer's equations. 17,18 The pore properties were observed by N 2 physisorption measurement using a BELSORP-Max surface area analyzer (BEL Japan). The specific surface area (SSA) and pore size distribution were determined using BET and BJH methods, respectively.…”

Section: Characterizationmentioning

confidence: 99%

Facile fabrication of polyacrylonitrile‐derived porous carbon beads via electron beam irradiation as anode materials for Li‐ion batteries

et al. 2021

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In this study, porous carbon beads (PCBs) as an anode material for Li-ion batteries (LiBs) were prepared from polyacrylonitrile (PAN) via electron beam irradiation (EBI). Porous PAN beads (PPBs) were irradiated with electron beams, stabilized under the optimized conditions, and finally carbonized to produce PCBs. EBI was introduced to shorten the conventional thermal stabilization. The results of N 2 physisorption measurement revealed that the PCBs had hierarchical pore structures. The PCB-based anodes exhibited an initial reversible capacity of 387 mAh g −1 at 0.2 C and a high capacity retention of 83.2% after 200 cycles. Therefore, the PCBs prepared via EBI are promising anode material for LiBs.

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Nanocrystalline Cellulose from Kapok Fiber (Ceiba pentandra) and its Reinforcement Effect on Alginate Hydrogel Bead

et al. 2021

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Kapok fiber (Ceiba pentandra) is a potential source of cellulose, but its utilization is still minimal. This study aims to isolate nanocrystalline cellulose (NCC) from kapok fibers using acid hydrolysis at various times and characterize its properties as reinforcement for alginate-nanocrystalline cellulose (Alg-NCC) hydrogel beads. NCCs are characterized using various techniques, and hydrogel beads are characterized by syneresis and strength (TPA). Variations in hydrolysis time cause changes in functional groups, decrease length and diameter, increase degree of crystallinity, and thermal stability. Nanocrystalline cellulose isolation from BKF by chemical hydrolysis is better done at 60% sulfuric acid concentration, for 50 min to produce a yield of 38.92%, L/d aspect ratio ranges from 8.53 to 12.23, degree of crystallinity 71.00%, and thermal stability with maximum degradation temperature 298.69°C. The incorporation of NCC on the Alg hydrogel beads leads to increase hardness 67.70% and decrease syneresis 4.14%. Thus, NCC can be used as a reinforcement agent because it has been shown to improve the physical, mechanical, and thermal properties of Alg-NCC hydrogel beads. Alg-NCC hydrogel beads have the potential to be widely applied in various fields.

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Isolation and characterization of nanocrystalline cellulose from different precursor materials

Cited by 30 publications

References 33 publications

On the use of cellulose nanowhisker as reinforcement in all‐cellulose composite membrane from corn stalk

On the use of cellulose nanowhisker as reinforcement in all‐cellulose composite membrane from corn stalk

Facile fabrication of polyacrylonitrile‐derived porous carbon beads via electron beam irradiation as anode materials for Li‐ion batteries

Nanocrystalline Cellulose from Kapok Fiber (Ceiba pentandra) and its Reinforcement Effect on Alginate Hydrogel Bead

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