scholarly journals Chemical Modification Effect of Compound Solutions of Surfactants with Acetic Acid on Coal Pores

ACS Omega ◽  
2021 ◽  
Author(s):  
Jun Xie ◽  
Haigang Du ◽  
Shanle Chen ◽  
Xiangke Sun ◽  
Lin Xin
Keyword(s):  
Acetic Acid ◽  
Chemical Modification ◽  
Modification Effect

scholarly journals Chemical Modification Effect on the Mechanical Properties of Coir Fiber

2012 ◽  
Vol 16 (2) ◽  
pp. 73-84 ◽  
Author(s):  
Samia Sultana Mir ◽  
Syed M. N. Hasan ◽  
Md. J. Hossain ◽  
Mahbub Hasan
Keyword(s):  
Mechanical Properties ◽  
Chemical Modification ◽  
Coir Fiber ◽  
Modification Effect

The Effect of Chemical Modification on Properties of Polypropylene/Bagasse Fiber Composites Compounding Using Two Roll Mill

2013 ◽  
Vol 795 ◽  
pp. 611-615
Author(s):  
A.A. Sinar ◽  
B.I. Sea ◽  
Daud Yusrina Mat
Keyword(s):  
Acetic Acid ◽  
Chemical Modification ◽  
Fiber Composites ◽  
Ftir Analysis ◽  
Flexural Test ◽  
Chemically Modified ◽  
Roll Mill ◽  
Acetyl Group ◽  
Pp Composites ◽  
Bagasse Fiber

This study is concerned on chemical modification of bagasse fiber (BF) filled polypropylene (PP) composites compounding using two roll mill. The fibers were chemically modified with different chemical treatment (alkaline, acetic acid and silane coupling agent). Effect of chemical modification towards BF/PP composites was evaluated by tensile test and flexural test. The chemical modification efficiency was verified by Fourier Transform Spectrometer (FTIR) analysis. From FTIR analysis, there is an increase on intensity on acetyl group (C-H) indicated the existing of chemical bonding between PP and BF. Chemical modified composites increased the mechanical behavior. Composites that modified with acetylation (acetic acid) shows better mechanical properties compared to others.

ChemInform Abstract: Chemical Modification. Effect on Enzyme Activities and Stabilities

ChemInform ◽  
2010 ◽  
Vol 24 (44) ◽  
pp. no-no
Author(s):  
A. SADANA ◽  
R. R. RAJU
Keyword(s):  
Chemical Modification ◽  
Enzyme Activities ◽  
Modification Effect

Tuning of Lecitase features via solid-phase chemical modification: Effect of the immobilization protocol

2014 ◽  
Vol 49 (4) ◽  
pp. 604-616 ◽  
Author(s):  
Cristina Garcia-Galan ◽  
José C.S. dos Santos ◽  
Oveimar Barbosa ◽  
Rodrigo Torres ◽  
Ernandes B. Pereira ◽  
...  
Keyword(s):  
Chemical Modification ◽  
Solid Phase ◽  
Modification Effect ◽  
Phase Chemical

Reply to Comment on “Reaction Pathway to the Synthesis of Anatase via the Chemical Modification of Titanium Isopropoxide with Acetic Acid”

2008 ◽  
Vol 20 (10) ◽  
pp. 3541-3541 ◽  
Author(s):  
R. Parra ◽  
M. S. Góes ◽  
M. S. Castro ◽  
E. Longo ◽  
P. R. Bueno ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Chemical Modification ◽  
Reaction Pathway ◽  
Titanium Isopropoxide ◽  
Modification Of Titanium

Physical and Chemical Modification of Sorghum Flour for the Potential Substitute of Wheat Flour

2015 ◽  
Vol 1123 ◽  
pp. 368-372 ◽  
Author(s):  
Heru Susanto ◽  
M. Fitrianingtyas ◽  
N. Rokhati ◽  
A. Hakiim ◽  
F. Sistihapsari
Keyword(s):  
Heat Treatment ◽  
Acetic Acid ◽  
Chemical Modification ◽  
Wheat Flour ◽  
Green Beans ◽  
Swelling Power ◽  
Chemically Modified ◽  
Sorghum Flour ◽  
Physical Modification ◽  
Physical And Chemical

The huge amount of wheat import causes efforts to find substitutes for wheat flour are very important in Indonesia. In this work, sorghum (Sorghum bicolor (L)) flour was physically and chemically modified. The physical modification was performed by heat treatment and/or addition of a foodstuff having high protein content (soybean or green beans flour). Heat treatment was conducted by heating in an oven at temperature of 100°C, 110°C and 120°C for various times (14, 15, and 16 hours). The chemical modification was carried out by addition of acetic acid (5%, 10%, 15%, 20%, 25% v/v) followed by heating at temperature of 60°C, 70°C, and 80°C. The unmodified and modified sorghum flour were then characterized in term of swelling power and solubility. Overall, sorghum modification by physical and chemical treatment increases both swelling power and solubility. The physical modification shows that modified sorghum flour by heating (only) at 100°C for 15 hours has swelling power was 12.39% and percent of solubility was 2.3%, which is closer to wheat flour than other physical modifications. The chemical modification by addition of acetic acid 15% v/v followed by heating at temperature of 70°C resulted in modified sorghum with the swelling power of 12.31, which approaches the swelling power of wheat flour (12.84).

Reaction Pathway to the Synthesis of Anatase via the Chemical Modification of Titanium Isopropoxide with Acetic Acid

2008 ◽  
Vol 20 (1) ◽  
pp. 143-150 ◽  
Author(s):  
R. Parra ◽  
M. S. Góes ◽  
M. S. Castro ◽  
E. Longo ◽  
P. R. Bueno ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Chemical Modification ◽  
Reaction Pathway ◽  
Titanium Isopropoxide ◽  
Modification Of Titanium

Properties of ZrO2, Gels Prepared by Controlled Chemical Modification Method of Alkoxide

1992 ◽  
Vol 271 ◽  
Author(s):  
Hisao Suzuki ◽  
Hajime Saito ◽  
Hiroaki Hayashl
Keyword(s):  
Acetic Acid ◽  
Chemical Modification ◽  
Condensation Reaction ◽  
Dip Coating ◽  
Butyl Alcohol ◽  
Mechanical Stirring ◽  
Polymeric Gels ◽  
Zirconium Alkoxide ◽  
Hydrolysis And Condensation ◽  
Modification Method

ABSTRACTPolymeric ZrO2 gels were prepared by the controlled chemical modification method (CCM method) of zirconium-n-propoxide. In this method, the steric hindrance by alkoxide-acetic acid chelation could be used to control the hydrolysis and condensation reaction of the zirconium alkoxide if the amount of hydrolysis water was limited. As a result, polycondensaticn occurred uniformly in the solution, forming a linear zirconoxane polymer. When the solvent evaporated, the zirconoxane polymer crosslinked with each other and formed polymeric ZrO2, gels, which were monolithic and transparent. These polymeric gels could be re-dissolved into n-butyl alcohol with acetic acid and mechanical stirring. Heating would enhance the dissolution of the gels. Using the re-dissolved gel solution, dense thin films of ZrO2, could be obtained by dip-coating procedures without many coating operations.

Chemical Modification Effect on the Sorption Capacities of Natural Clinoptilolite

2002 ◽  
Vol 25 (3) ◽  
pp. 301-305 ◽  
Author(s):  
H. Kurama ◽  
A. Zimmer ◽  
W. Reschetilowski
Keyword(s):  
Chemical Modification ◽  
Modification Effect ◽  
Natural Clinoptilolite
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