Isolation of Thermally Stable Cellulose Nanocrystals by Phosphoric Acid Hydrolysis

2013 ◽  
Vol 14 (4) ◽  
pp. 1223-1230 ◽  
Author(s):  
Sandra Camarero Espinosa ◽  
Tobias Kuhnt ◽  
E. Johan Foster ◽  
Christoph Weder
Keyword(s):  
Phosphoric Acid ◽  
Acid Hydrolysis ◽  
Cellulose Nanocrystals ◽  
Thermally Stable ◽  
Phosphoric Acid Hydrolysis

Preparation of thermally stable and surface-functionalized cellulose nanocrystals via mixed H2SO4/Oxalic acid hydrolysis

2019 ◽  
Vol 223 ◽  
pp. 115116 ◽  
Author(s):  
Hongxiang Xie ◽  
Zhufan Zou ◽  
Haishun Du ◽  
Xinyu Zhang ◽  
Xumei Wang ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Acid Hydrolysis ◽  
Cellulose Nanocrystals ◽  
Thermally Stable

scholarly journals Optimization of cellulose nanocrystal length and surface charge density through phosphoric acid hydrolysis

2017 ◽  
Vol 376 (2112) ◽  
pp. 20170041 ◽  
Author(s):  
Oriana M. Vanderfleet ◽  
Daniel A. Osorio ◽  
Emily D. Cranston
Keyword(s):  
Thermal Stability ◽  
Sulfuric Acid ◽  
Phosphoric Acid ◽  
Charge Density ◽  
Acid Hydrolysis ◽  
Acid Concentration ◽  
Large Range ◽  
Phosphate Content ◽  
Hydrolysis Temperature ◽  
Phosphoric Acid Hydrolysis

Cellulose nanocrystals (CNCs) are emerging nanomaterials with a large range of potential applications. CNCs are typically produced through acid hydrolysis with sulfuric acid; however, phosphoric acid has the advantage of generating CNCs with higher thermal stability. This paper presents a design of experiments approach to optimize the hydrolysis of CNCs from cotton with phosphoric acid. Hydrolysis time, temperature and acid concentration were varied across nine experiments and a linear least-squares regression analysis was applied to understand the effects of these parameters on CNC properties. In all but one case, rod-shaped nanoparticles with a high degree of crystallinity and thermal stability were produced. A statistical model was generated to predict CNC length, and trends in phosphate content and zeta potential were elucidated. The CNC length could be tuned over a relatively large range (238–475 nm) and the polydispersity could be narrowed most effectively by increasing the hydrolysis temperature and acid concentration. The CNC phosphate content was most affected by hydrolysis temperature and time; however, the charge density and colloidal stability were considered low compared with sulfuric acid hydrolysed CNCs. This study provides insight into weak acid hydrolysis and proposes ‘design rules’ for CNCs with improved size uniformity and charge density. This article is part of a discussion meeting issue ‘New horizons for cellulose nanotechnology’.

scholarly journals Extraction of thermally stable cellulose nanocrystals in short processing time from waste newspaper by conventional acid hydrolysis

2020 ◽  
Vol 7 (6) ◽  
pp. 065004
Author(s):  
Dan-Thuy Van-Pham ◽  
Thi Yen Nhu Pham ◽  
Minh Chien Tran ◽  
Chanh-Nghiem Nguyen ◽  
Qui Tran-Cong-Miyata
Keyword(s):  
Acid Hydrolysis ◽  
Cellulose Nanocrystals ◽  
Processing Time ◽  
Thermally Stable ◽  
Short Processing Time

The phosphoric acid hydrolysis of 4-aminobenzo [b] thiophene

1970 ◽  
Vol 11 (60) ◽  
pp. 5265-5266 ◽  
Author(s):  
Donald E. Boswell ◽  
James A. Brennan ◽  
Phillip S. Landis
Keyword(s):  
Phosphoric Acid ◽  
Acid Hydrolysis ◽  
Phosphoric Acid Hydrolysis ◽  
Hydrolysis Of

Urea-Phosphoric Acid Hydrolysis of Cotton Modified with N-Methylolated Ethylene Ureas

1974 ◽  
Vol 44 (9) ◽  
pp. 670-679 ◽  
Author(s):  
H.Z. Jung ◽  
R.R. Benerito ◽  
E.J. Gonzales ◽  
R.J. Berni
Keyword(s):  
Phosphoric Acid ◽  
Acid Hydrolysis ◽  
Phosphoric Acid Hydrolysis ◽  
Hydrolysis Of

Preparation and characterization of thermally stable cellulose nanocrystals via a sustainable approach of FeCl3-catalyzed formic acid hydrolysis

Cellulose ◽  
2016 ◽  
Vol 23 (4) ◽  
pp. 2389-2407 ◽  
Author(s):  
Haishun Du ◽  
Chao Liu ◽  
Xindong Mu ◽  
Wenbo Gong ◽  
Dong Lv ◽  
...  
Keyword(s):  
Formic Acid ◽  
Acid Hydrolysis ◽  
Cellulose Nanocrystals ◽  
Thermally Stable ◽  
Formic Acid Hydrolysis

Cassava Starch Maltodextrinization/Monomerization Through Thermopressurized Aqueous Phosphoric Acid Hydrolysis

2001 ◽  
Vol 91-93 (1-9) ◽  
pp. 469-478 ◽  
Author(s):  
José D. Fontana ◽  
Mauricio Passos ◽  
Madalena Baron ◽  
Sabrina V. Mendes ◽  
Luiz P. Ramos
Keyword(s):  
Phosphoric Acid ◽  
Acid Hydrolysis ◽  
Cassava Starch ◽  
Phosphoric Acid Hydrolysis
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