Research on Preparation of Barium Titanate Nano Powder by Sol-Gel

2014 ◽  
Vol 809-810 ◽  
pp. 136-139
Author(s):  
Xiao Chi Li ◽  
Qiao Yang

The barium titanate nanopowder was widely applied to many fields because of its excellent performances. The homogeneous barium titanate nanosized powder with high purity and small size was achieved by sol-gel. Effects of different amount of the hydrolysis of acetic acid solution on gelation process and particle size of the powder, PH value on gel time and heat preservation temperature on gelatinization were studied in the paper. The amount of the hydrolysis of 36% acetic acid solution was 25ml and the amount of Glacial acetic acid used for PH adjustment was 25-30ml. The heat preservation temperature was 95-100 °C.

ISRN Ceramics ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-6
Author(s):  
Shuhua Liu ◽  
Lihua Li ◽  
Zhigang Wang ◽  
Jiafeng Wang ◽  
Meijuan Rao

Different cement pastes containing limestone powder were prepared and soaked, respectively, in flowing acetic acid solution with pH value of 4 and sulfuric acid solution with pH value of 2. The strength and microstructure of the pastes after different flowing acid attack periods were investigated by using strength test, X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques in this study, which reveals the effect of limestone powder on flowing acid resistance mechanism of cement paste. Testing results show that the strength of pastes suffered flowing acid attack decreases with the increase of water-binder ratio and the content of limestone powder. In flowing acetic acid solution, calcium hydroxide and calcium carbonate react with acetic acid, which therefore made deterioration of pastes proceed from the exterior to the interior. In flowing sulfuric acid solution, although calcium hydroxide and calcium carbonate could react with sulfuric acid and form gypsum, the flowing liquid would dissolve it out and thus the crystallization of gypsum was difficult which would somewhat inhibit the swell of pastes.


ZOOTEC ◽  
2015 ◽  
Vol 35 (2) ◽  
pp. 23
Author(s):  
Indri M. Pantow ◽  
Meity Sompie ◽  
Arie Dp. Mirah ◽  
Linda Ch. M. Karisoh

THE EFFECT OF ACETIC ACID CONCENTRATION ON CHARACTERISTICS OF CHICKEN LEG SKIN GELATIN. This research was aimed to determine the effect of differenceacetic acid (CH3COOH) concentration on chicken legs skin gelatin. The experiment were determined by analysis of Completely Randomized Design with one factors and five replicates of treatments.The factor was concentration of acetic acid solution consisting 4 level (1, 3, 5 and 7%).The results showed that the difference  concentration acetic acid solution had high significant effect (P<0.01) on the the  yields, viscosity, gel strength and pH value ofchicken legs skin gelatin.Yield of chicken legskin gelatin was13.57 to 15.49%, viscocity was ranged between  4.30 to 5.76,  gel strength was 61.15 to 68.29 g Bloom and pH value was 5.24 to 5.58. The conclusion of this research was the chicken leg skin gelatin using acetic acid solution concentration 1 % to 7 % had the similar characteristics with the commercial gelatin and includedyields, viscosity, gel strength and pH value of Indonesian National Standard gelatin.   Key words : Acetic acid,  Gelatin and  Chicken legs skin


2016 ◽  
Vol 10 (2) ◽  
pp. 135-139 ◽  
Author(s):  
Valentina Chernova ◽  
◽  
Angela Shurshina ◽  
Elena Kulish ◽  
Gennady Zaikov ◽  
...  

Some ways of estimating the values of the intrinsic viscosity of chitosan were analyzed. It was shown that the method of Irzhak and Baranov for estimating the current value of the intrinsic viscosity allows to adequately estimates the conformational state of the macromolecular coil and its degree of swelling.


2010 ◽  
Vol 82 (2) ◽  
pp. 251-255 ◽  
Author(s):  
H.M.P. Naveen Kumar ◽  
M.N. Prabhakar ◽  
C. Venkata Prasad ◽  
K. Madhusudhan Rao ◽  
T.V. Ashok Kumar Reddy ◽  
...  

1944 ◽  
Vol 66 (10) ◽  
pp. 1752-1755 ◽  
Author(s):  
Herbert S. Anker ◽  
Konrad Bloch

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