Measurement of Physical Properties and Correlation of the Solubility of Calcium Carbonate in Ammonium Sulfate Aqueous Solution atT= (298.15, 323.15, and 348.15) K in the Process of Preparing Calcium Carbonate Products by the Desulfurization of Gypsum

2016 ◽  
Vol 61 (11) ◽  
pp. 3827-3833
Author(s):  
Jinjun Wang ◽  
Haipeng Zhao ◽  
Yongsheng Ren
Keyword(s):  
Aqueous Solution ◽  
Calcium Carbonate ◽  
Physical Properties ◽  
Ammonium Sulfate

Recycled fiber treated with NaOH/urea aqueous solution: effects on physical properties of paper sheets and on hornification

2018 ◽  
Vol 33 (4) ◽  
pp. 651-660 ◽  
Author(s):  
Yingju Miao ◽  
Yunfei Zhi ◽  
Heng Zhang ◽  
Ying Chen ◽  
Shaoyun Shan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Physical Properties ◽  
Water Retention ◽  
Crystalline Region ◽  
Cellulose Film ◽  
Reinforced Concrete Structure ◽  
Water Retention Value ◽  
Fiber Network ◽  
Urea Aqueous Solution ◽  
Intramolecular Hydrogen

Abstract Hydrogen bonding among fiber microfibrils is the primary cause of fiber hornification, wherein NaOH/urea aqueous solution precooled to −13 °C can disassemble inter- and intramolecular hydrogen bonds. Whether hornified fibers treated with this process can significantly improve fiber swelling ability and physical properties of the resulting paper sheets remains a problem. In this investigation, the 6th cycle fiber was pretreated with this procedure, and the water retention value of the fiber before and after treatment and the physical properties of the resulting paper sheets were studied. The results indicate that the lignin decline, complete swelling of flat fiber, filling of cellulose film between the interfiber network, and decreasing crystalline region all contribute to the increase in water retention value. The water retention value of repaired fiber is equivalent to that of virgin pulp, and hornification reverses by 89 %. In addition, the cellulose film filling among the fiber network constructs a similar reinforced concrete structure, which causes the tear, burst, and tensile index of the resulting paper sheets to increase by 145 %, 98 %, and 43 %, respectively.

Physical properties and biocompatibility of cellulose/soy protein isolate membranes coagulated from acetic aqueous solution

2008 ◽  
Vol 19 (4) ◽  
pp. 479-496 ◽  
Author(s):  
Li-Hua Luo ◽  
Xiao-Mei Wang ◽  
Yu-Feg Zhang ◽  
Yong-Ming Liu ◽  
Peter R. Chang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Physical Properties ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Protein Isolate

The Effect of Crystal Habit and Particle Size of Calcium Carbonate on Physical Properties and Pore Structure of Cigarette Paper.

1996 ◽  
Vol 50 (6) ◽  
pp. 906-914
Author(s):  
Kazuko Takeda ◽  
Atsushi Mikita ◽  
Akira Yamazaki ◽  
Tetsuo Kumasaka ◽  
Kaoru Nishio ◽  
...  
Keyword(s):  
Particle Size ◽  
Calcium Carbonate ◽  
Physical Properties ◽  
Pore Structure ◽  
Crystal Habit ◽  
Cigarette Paper
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