Effect of different molecular weight polyethylene glycol on flat sheet cellulose acetate membranes for evaluating power density performance in pressure retarded osmosis study

2019 ◽  
Vol 30 ◽  
pp. 100632 ◽  
Author(s):  
Mukesh Sharma ◽  
Piyal Mondal ◽  
Arun Chakraborty ◽  
Jayanarayanan Kuttippurath ◽  
Mihir Purkait
Keyword(s):  
Molecular Weight ◽  
Polyethylene Glycol ◽  
Cellulose Acetate ◽  
Power Density ◽  
Pressure Retarded Osmosis ◽  
Flat Sheet ◽  
Cellulose Acetate Membranes ◽  
Different Molecular Weight

scholarly journals Research and Application of Polycarboxylic Acid Water Reducer with Different Molecular Weight

2020 ◽  
Vol 179 ◽  
pp. 01021
Author(s):  
Bobo Liu ◽  
Kangjian Yu ◽  
Yinggang Yang ◽  
Donghui Miao ◽  
Chong He
Keyword(s):  
Molecular Weight ◽  
Polyethylene Glycol ◽  
Reducing Agent ◽  
Acid Water ◽  
Low Molecular Weight ◽  
High Grade ◽  
Polycarboxylic Acid ◽  
Different Molecular Weight

In this paper, a polycarboxylic water reducing agent was synthesized by using Methylallyl polyethylene glycol (HPEG) with molecular weight of 1200, 2400, 2800 and 3400 under the same conditions, C80 concrete tests were performed on these four molecular weight superplasticizers, verify the effect of different molecular weight polycarboxylic acid water reducer in C80 pumping concrete, finally, a kind of low molecular weight polycarboxylic acid water reducer with viscosity reducing effect in high-grade concrete is obtained, which can promote pumping of high-grade concrete.

Effect of Polyethylene Glycol (PEG) on Molten Plasticized Cellulose Acetate (CA)

2013 ◽  
Vol 830 ◽  
pp. 172-175
Author(s):  
Cheng Zhi Chuai ◽  
Zhi Zhang
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Tensile Strength ◽  
Polyethylene Glycol ◽  
Flexural Strength ◽  
Cellulose Acetate ◽  
Flexural Modulus ◽  
Degree Of Polymerization ◽  
Maximum Elongation ◽  
Elongation At Break

Ethylene glycol (EG) and polyethylene glycol (PEG) were added as plasticizers to improve the processing performance of cellulose acetate (CA). The CA with 30% plasticizers were melted by HAAKE at 200 °C. The effects of EG and PEG (degree of polymerization in 200-800) on rheological properties and mechanical properties of CA were investigated. The results show that the plasticizing time, equilibrium torque and melt viscosity of the plasticizing system increase with the increase of PEG molecular weight, while the processing performance decreased. The tensile strength of the system decrease as the PEG molecular weight increased. The plasticizing system which contents 30% PEG-200(degree of polymerization is 200) shows the maximum elongation at break. The minimum values appeared in both flexural strength and flexural modulus in the CA/PEG-200 system.

Improvement of Nanometer TiO2 Anti-Ultraviolet Finishing Performance for Cotton Fabric by Using Polyethylene Glycol

2012 ◽  
Vol 627 ◽  
pp. 212-216
Author(s):  
Yue Xian Liu ◽  
Nan Zhe Zhang
Keyword(s):  
Molecular Weight ◽  
Polyethylene Glycol ◽  
Cotton Fabric ◽  
Crystalline Structures ◽  
Different Molecular Weight

Cotton fabric is processed for anti-ultraviolet finishing by using nanometer TiO2 of different crystalline structures, polyethylene glycol (PEG) and so on. The results show: under the same conditions, the adhesion amount of rutile nanometer TiO2 is more than anatase nanometer TiO2; with different TiO2/PEG concentrations and different molecular weight of PEG, the adhesion amount of TiO2 is different, furthermore both the laundry-resistant property and the photoaging property have different change.

Affinity of Antithrombin II/III to Insolubilized Heparin

1975 ◽  
Author(s):  
E. Thaler ◽  
G. Schmer
Keyword(s):  
Molecular Weight ◽  
Polyethylene Glycol ◽  
Sodium Chloride ◽  
Cyanogen Bromide ◽  
Gel Chromatography ◽  
Molecular Weight Range ◽  
Heparin Fractions ◽  
Polyethylene Glycol Precipitation ◽  
The Individual ◽  
Different Molecular Weight

Five heparin fractions of different molecular weight range were obtained from commercial sodium heparin (Sigma) by gel chromatography on Sephadex G-200. Each fraction was bound separately to Biogel A-15 m by the cyanogen bromide reaction. Microcolumns containing equal amounts of the individual heparin agarose batches were prepared. A protein fraction from human plasma containing antithrombin II/III but no fibrinogen, which was obtained by polyethylene glycol precipitation, was passed through the columns. After extensive washing with 0.15 and 0.3 M buffered sodium chloride antithrombin was eluted with 1.0 M buffered sodium chloride. The uptake of antithrombin did not differ greatly in all five heparin agarose preparations. However, the amount of antithrombin eluted with 1.0 M NaCl varied considerably depending on the insolubilized heparin fraction. Almost no antithrombin activity was eluted from the agarose grafted with the highest molecular weight heparin, while all of the antithrombin was recovered from the agarose with the intermediate molecular weight heparin.Our findings of different affinities of antithrombin to insolubilized heparin in dependance of its molecular weight suggest similar implications for the practical use of heparin in anticoagulant therapy.

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