Evaluation of Suitability of Carboxymethyl Cellulose in Performance Improvement of Sodium Lauryl Sulfate Foam and Compressive Strength of Foam Concrete

2021 ◽  
Vol 10 (1) ◽  
pp. 20200083
Author(s):  
Sritam Swapnadarshi Sahu ◽  
Indu Siva Ranjani Gandhi ◽  
Amit Kumar ◽  
Saurav Garg
Keyword(s):  
Compressive Strength ◽  
Performance Improvement ◽  
Carboxymethyl Cellulose ◽  
Sodium Lauryl Sulfate ◽  
Lauryl Sulfate ◽  
Foam Concrete

The Relative Performance Study of Foam Concrete Straw-Based

2013 ◽  
Vol 788 ◽  
pp. 646-650 ◽  
Author(s):  
Jin Ke Cai ◽  
Yong Sheng Zhang
Keyword(s):  
Epoxy Resins ◽  
Sodium Lauryl Sulfate ◽  
Sodium Dodecyl ◽  
Economic Benefits ◽  
Basic Material ◽  
Lauryl Sulfate ◽  
Performance Study ◽  
Foam Concrete ◽  
Foaming Agent ◽  
Stabilizing Effect

The experiment is to extract lignin from straw as the basic material, then to develop cheap resin. By mechanical foaming, we are to research lignin-based epoxy compounds with commercial foaming agent or sodium lauryl sulfate and the foam stabilizing effect under the experimental condition that adding or not coagulant. The study shows that the actual amount of foam can change the strength and weight of foam concrete to some extent. The results of experimental show that the lignin-based epoxy resins prepared by inexpensive straw can be applied YX-M-8-type foaming agent and the modification of sodium dodecyl sulfate in order to improve the utilization of straw, with great social and economic benefits. CLC:TU522 Document Code:A

ASSESSMENT OF THE TOXICITY AND HAZARD OF SODIUM LAURYL SULFATE AT DIFFERENT EXPOSURE ROUTES

2020 ◽  
pp. 56-59
Author(s):  
M. V. Bidevkina ◽  
M. I. Golubeva ◽  
A. V. Limantsev ◽  
I. N. Razumnaya ◽  
T. N. Potapova ◽  
...  
Keyword(s):  
Sodium Lauryl Sulfate ◽  
Exposure Level ◽  
Hazardous Substance ◽  
Lauryl Sulfate ◽  
Upper Respiratory Tract ◽  
Mucous Membranes ◽  
Chloroprene Rubber ◽  
Upper Respiratory ◽  
Exposure Routes ◽  
Number Of Cells

Sodium lauryl sulfate is the most common surfactant used in the production of detergents, chloroprene rubber, plastics, artificial furs and in pharmaceutical industry. Sodium lauryl sulfate is a moderately hazardous substance when introduced into the stomach (DL50 for white mice and rats is in the range of 2086-2700 mg/kg), has a pronounced local irritant effect on the skin and mucous membranes of the eyes, has a skin-resorptive, sensitizing and pronounced cumulative effects. The threshold for acute inhalation action is set at 15,3 mg/m3 for changes in the function of the nervous system and irritating effects on the mucous membranes of the upper respiratory tract (an increase in the total number of cells in the nasal flushes).Recommended for approval tentative safe exposure level of sodium lauryl sulfate in the air of the working area is 0.2+ mg/m3 (aerosol).

scholarly journals Preparation of alkali-resistant PVDF membranes via immobilization of sodium lauryl sulfate (SDS) on surface

2021 ◽  
Vol 11 (3) ◽  
Author(s):  
Gongpu Wen ◽  
Kun Chen ◽  
Yanhong Zhang ◽  
Yue Zhou ◽  
Jun Pan ◽  
...  
Keyword(s):  
Sodium Lauryl Sulfate ◽  
Alkali Treatment ◽  
Membrane Surface ◽  
Alkali Resistance ◽  
Lauryl Sulfate ◽  
Uv Curable ◽  
Pvdf Membrane ◽  
Glycol Diacrylate ◽  
Polyester Acrylate ◽  
Uv Curable Resin

AbstractA novel strategy was proposed to fabricate alkali-resistant PVDF membrane via sodium lauryl sulfate (SDS) attached to the surface of membrane and immobilized by UV-curable polyester acrylate and tri(propylene glycol) diacrylate (TPGDA). The attached anionic surfactant, SDS, on the membrane surface can resist the alkali corrosion by NaOH, and the curing of the resin can immobilize the SDS on the membrane firmly. Due to the unique alkali resistance of SDS and resin formed, the UV-curable resin-modified PVDF membrane showed greatly enhanced alkali-resistant ability. Characterization of SEM and FTIR showed that polyester acrylate and TPGDA were cured successfully under the action of 1-hydroxycyclohexyl phenyl ketone (184) and ultraviolet light. Whiteness, differential scanning calorimeter and X-ray photoelectron spectrometer characterization showed that the modified PVDF membrane had a lower degree of dehydrofluorination than the pristine PVDF membrane after alkali treatment. Results of the detailed alkali-resistant analysis indicated that the F/C ratio of the UV-curable resin-modified PVDF membrane decreased by 2.6% after alkali treatment compared to pristine PVDF membrane decreased by 19.28%. The alkali-resistant performance was mainly attributed to the immobilized SDS. This study provided a facile and scalable method for designing alkali-resistant PVDF membrane, which shows a promising potential in the treatment of alkaline wastewater and alkaline-cleaning PVDF membrane.

Sodium Lauryl Sulfate in Egg Whites

1967 ◽  
Vol 50 (4) ◽  
pp. 847-849
Author(s):  
John Wiskerchen
Keyword(s):  
Chloride Solution ◽  
Sodium Lauryl Sulfate ◽  
Collaborative Study ◽  
Egg White ◽  
Chloride Complex ◽  
Bromphenol Blue ◽  
Lauryl Sulfate ◽  
Benzethonium Chloride ◽  
Alkyl Sulfates

Abstract A method is given for the quantitative determination of sodium lauryl sulfate in liquid, frozen, powdered, or flake-dried egg white. The egg white is dissolved in water and the protein is precipitated with ethanol and filtered off. The filtrate is evaporated, the residue is dissolved in water, and the pH is adjusted to 5.0. Total alkyl sulfates are titrated with standard benzethonium chloride solution in the presence of chloroform with bromphenol blue indicator. Results are calculated as sodium lauryl sulfate. The formation of the bromphenol bluebenzethonium chloride complex, when excess benzethonium chloride is present, is taken as the end point. The blue-green complex is soluble in the chloroform. Overall recoveries of sodium lauryl sulfate from egg whites ranged from 94 to 100%. Collaborative study of the method is recommended.

Oral Fluoride Levels 1 h after Use of a Sodium Fluoride Rinse: Effect of Sodium Lauryl Sulfate

2015 ◽  
Vol 49 (3) ◽  
pp. 291-296 ◽  
Author(s):  
Gerald L. Vogel ◽  
Gary E. Schumacher ◽  
Laurence C. Chow ◽  
Livia M.A. Tenuta
Keyword(s):  
Sodium Fluoride ◽  
Sodium Lauryl Sulfate ◽  
Lauryl Sulfate ◽  
Fluoride Release ◽  
Important Goal ◽  
Oral Fluids ◽  
Surrogate Measure ◽  
Significant Change ◽  
Topical Fluoride

Increasing the concentration of free fluoride in oral fluids is an important goal in the use of topical fluoride agents. Although sodium lauryl sulfate (SLS) is a common dentifrice ingredient, the influence of this ion on plaque fluid and salivary fluid fluoride has not been examined. The purpose of this study was to investigate the effect of SLS on these parameters and to examine the effect of this ion on total (or whole) plaque fluoride, an important source of plaque fluid fluoride after a sufficient interval following fluoride administration, and on total salivary fluoride, a parameter often used as a surrogate measure of salivary fluid fluoride. Ten subjects accumulated plaque for 48 h before rinsing with a 12 mmol/l NaF (228 µg/g F) rinse containing or not containing 0.5% (w/w) SLS. SLS had no statistically significant effect on total plaque and total saliva fluoride but significantly increased salivary fluid and plaque fluid fluoride (by 147 and 205%, respectively). These results suggest that the nonfluoride components of topical agents can be manipulated to improve the fluoride release characteristics from oral fluoride reservoirs and that statistically significant change may be observed in plaque fluid and salivary fluid fluoride concentrations that may not be observed in total plaque and total saliva fluoride concentrations.

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