Synergistic Effects Between Sulfo-betain Zwitterionic Surfactant and Alcohol Ether Sulfate

2013 ◽  
Vol 50 (6) ◽  
pp. 430-433
Author(s):  
Zhang Zhang ◽  
Zhu Ri-Li ◽  
Dong Bin ◽  
Zhang Zhen-Xian
Keyword(s):  
Synergistic Effects ◽  
Zwitterionic Surfactant ◽  
Ether Sulfate ◽  
Alcohol Ether Sulfate

The structure and properties of wool treated with a reversed-phase microemulsion containing aqueous alkali

2016 ◽  
Vol 88 (3) ◽  
pp. 254-260 ◽  
Author(s):  
Cailing Ding ◽  
Jianyong Yu ◽  
Weiguo Chen
Keyword(s):  
Aqueous Solution ◽  
Reversed Phase ◽  
Structure And Properties ◽  
Chemical Treatments ◽  
Ether Sulfate ◽  
Wool Fibers ◽  
External Phase ◽  
Alcohol Ether Sulfate ◽  
Oil Type ◽  
Scanning Electron

In order to limit modification to the surface of wool fibers and decrease pollution caused by conventional chemical treatments using chlorine, a water-in-oil-type reversed-phase microemulsion with decamethylcyclopentasiloxane as the external phase was prepared containing very small amounts of an aqueous solution of alkali. The edges of the wool cuticle scales were modified by the alkali in aqueous solution contained in the reversed-phase microemulsion. The external phase decamethylcyclopentasiloxane can be recycled after application. In this paper, the solubility of water in the reversed-phase microemulsion and its stability were first studied and then it was applied in the treatment of wool. The results showed that surfactant sodium alcohol ether sulfate/NaOH aqueous solution was quite stable. Felting shrinkage of treated wool was reduced and the initial dyeing speed was higher than that for untreated wool. The corroded scales of treated wool were observed by scanning electron microscopy and the bromine Allwörden reaction with bromine water was reduced or eliminated after treatment. This adsorbable organohalogen-free modification should be useful in improving the manufacturing properties of wool, such as hydrophilicity, and as a pretreatment for wool printing.

Evaluation of calcium oxalate deposition on different fabrics under different sodium oxalate-based detergent formulations

2020 ◽  
Vol 90 (23-24) ◽  
pp. 2613-2621
Author(s):  
Chen Li ◽  
Lijie Wang ◽  
Hong Xu ◽  
Jinxiang Dong
Keyword(s):  
Calcium Oxalate ◽  
Anionic Surfactant ◽  
Sodium Oxalate ◽  
Ash Deposition ◽  
Secondary Effects ◽  
Important Ingredient ◽  
Detergent Builder ◽  
Ether Sulfate ◽  
Alcohol Ether Sulfate ◽  
Soil Redeposition

The builder is an important ingredient in detergents. Sodium oxalate is a good non-phosphate detergent builder, which has good calcium-removing properties and good wash performance in detergents. However, sodium oxalate-based detergent formulations face a tricky problem of “incrustation” on fabrics due to calcium oxalate deposition. If sodium oxalate is used in commercial detergents, then “incrustation” must be solved. In this study, we examined the effect of fabric type, anionic surfactant, polymer, and temperature on incrustation and soil redeposition (“secondary” washing effect) of a sodium oxalate-based detergent. The results showed that both the anionic surfactant and polymer influenced the deposition of calcium oxalate on fabrics. Overall, the amount of calcium oxalate deposition followed the order polyamide < polyester < cotton with the same formulation. Finally, good secondary washing effects (low ash deposition and high whiteness retention) formulations were selected by cumulative washing. The formulation of methyl ester sulfonate (MES)-sodium carboxymethyl cellulose (CMC), MES-polyvinyl pyrrolidone, and alcohol ether sulfate (AES)-CMC had better secondary effects, and the optimal combination of the 12 formulations was AES-CMC.

Morphology of High-Performance Rigid-Rod Polymer Fibers and Molecular Composites

1989 ◽  
Vol 47 ◽  
pp. 338-339
Author(s):  
W.W. Adams ◽  
S. J. Krause
Keyword(s):  
Tensile Strength ◽  
High Performance ◽  
Liquid Crystalline ◽  
Molecular Level ◽  
Synergistic Effects ◽  
Tensile Modulus ◽  
Commercial Development ◽  
The Matrix ◽  
Molecular Composites ◽  
Rigid Rod

Rigid-rod polymers such as PBO, poly(paraphenylene benzobisoxazole), Figure 1a, are now in commercial development for use as high-performance fibers and for reinforcement at the molecular level in molecular composites. Spinning of liquid crystalline polyphosphoric acid solutions of PBO, followed by washing, drying, and tension heat treatment produces fibers which have the following properties: density of 1.59 g/cm3; tensile strength of 820 kpsi; tensile modulus of 52 Mpsi; compressive strength of 50 kpsi; they are electrically insulating; they do not absorb moisture; and they are insensitive to radiation, including ultraviolet. Since the chain modulus of PBO is estimated to be 730 GPa, the high stiffness also affords the opportunity to reinforce a flexible coil polymer at the molecular level, in analogy to a chopped fiber reinforced composite. The objectives of the molecular composite concept are to eliminate the thermal expansion coefficient mismatch between the fiber and the matrix, as occurs in conventional composites, to eliminate the interface between the fiber and the matrix, and, hopefully, to obtain synergistic effects from the exceptional stiffness of the rigid-rod molecule. These expectations have been confirmed in the case of blending rigid-rod PBZT, poly(paraphenylene benzobisthiazole), Figure 1b, with stiff-chain ABPBI, poly 2,5(6) benzimidazole, Fig. 1c A film with 30% PBZT/70% ABPBI had tensile strength 190 kpsi and tensile modulus of 13 Mpsi when solution spun from a 3% methane sulfonic acid solution into a film. The modulus, as predicted by rule of mixtures, for a film with this composition and with planar isotropic orientation, should be 16 Mpsi. The experimental value is 80% of the theoretical value indicating that the concept of a molecular composite is valid.

A new model of synergistic effects of alcohol and high-fat diet on hepatic injury

2010 ◽  
Vol 48 (01) ◽  
Author(s):  
E Gäbele ◽  
K Dostert ◽  
C Dorn ◽  
C Hellerbrand
Keyword(s):  
High Fat Diet ◽  
Hepatic Injury ◽  
Synergistic Effects ◽  
High Fat ◽  
New Model
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