8 results about "Lamellar phase" patented technology

The invention relates to the technical field of cosmetic preparations, and discloses a composition containing succinyl glycan and application of the composition to regulation and control of the repetition distance of a liquid crystal lamellar phase, the composition comprises a liquid crystal component and an effective amount of succinyl glycan, wherein the stratified phase repetition distance of liquid crystals in the composition can be effectively adjusted by adding the succinyl glycan, and the thermal stability of the composition is improved; small-angle X-ray scattering (SAXS) proves that the addition of the succinyl glycan enables the repetition distance of the lamellar phase of the liquid crystal to generate a measurable change of 6.2% to 19.4%; the invention provides a novel method for accurately regulating and controlling the liquid crystal structure of the cosmetic from the nanoscale, and the obtained composition has better stability, moisture retention and skin feeling in use.

The application provides a water-triggered self-assembly gel, a use method and application thereof. The water-triggered self-assembly gel comprises 5-aminolevulinic acid hydrochloride 5-15 wt%, phospholipid 5-10 wt%, anionic glycolipid surfactant 0.2-0.8 wt%, polyethylene glycol 50-60 wt%, propylene glycol 20-27 wt% and antioxidant 0.05-0.1 wt%, and water <0.1 wt%; the mass ratio of the polyethylene glycol and the propylene glycol is (2-2.5):1. The water content of the water-triggered self-assembly gel is extremely low, so that the stability is good and the storage is easy; when used, the water-triggered mechanism of transdermal water loss can be used to actively extract water from the stratum corneum, the phase transition of the phospholipid from the disordered lamellar phase to the liposome is quickly completed, the nanometer liposome with uniform particle size and high encapsulation efficiency is spontaneously formed, the 5-ALA hydrochloride is wrapped, and the 5-ALA hydrochloride can be efficiently delivered to the deep layer of the skin.

The application discloses a kind of dual-phase soft magnetic high-entropy alloy and preparation method thereof.The high-entropy alloy is composed of iron (Fe), cobalt (Co), chromium (Cr) and vanadium (V), with face-centered cubic (FCC) and body-centered cubic (BCC) dual-phase structure.The preparation method includes the following steps: design of dual-phase high-entropy alloy; preparation of alloy; homogenization treatment; controlled cold rolling; two-stage isothermal treatment.Based on the above process, the prepared high-entropy alloy has FCC and BCC dual-phase, FCC phase rich in Co, Cr and V, and BCC rich in Fe.Two-phase layered lamellar phase alternately forms pearlite-like structure.The dual-phase soft magnetic high-entropy alloy has high saturation magnetization (50-200 emu / g), low coercivity (50-100 Oe), high tensile yield strength (800-2000 MPa) and moderate plasticity (10-30%), and the mechanical and magnetic properties of the high-entropy alloy can be further adjusted by adjusting the heat treatment conditions.The method is simple and easy to operate, and can be widely applied to the preparation of various high-entropy alloys, with wide application prospect.

The invention is directed to a hydratable concentrated surfactant composition. The composition is pourable, easy to dilute, substantially free of sulfate and oil, comprises a C6-C14 acid, alcohol or both, an anionic surfactant comprising acyl isethionate and an amphoteric surfactant, zwitterionic surfactant or both. The composition is in lamellar phase and thickens and transforms to an isotropic phase upon dilution. The composition can be used as a concentrate in small volumes and diluted as used and needed or can be diluted with water in refill packaging to ensure a reduction in plastic waste.

Quick dilution and excellent rheology can be achieved with a hydratable concentrated surfactant composition comprising: a) from 30 to 50 wt % of anionic surfactant selected from sodium laureth ether sulphate, sodium pareth ether sulphate and mixtures thereof, by weight based on the total weight of the composition; b) from 4 to 12 wt %, of a co-surfactant, which is selected from a betaine, cocamide monoethanolamide and mixtures thereof, based on the total weight of the hydratable concentrated surfactant composition; c) from 0.2 to 3 wt % of a phase modifier, by weight of the total composition, which is sodium benzoate; d) from 2 to 7 wt % of a viscosity modifier, by weight of the total composition, which is an inorganic electrolyte; e) from 10 to 60% by weight water by weight of the total composition; wherein the surfactants are in a lamellar phase; and wherein the hydratable concentrated surfactant composition has a pH of from 3 to 6; and wherein the hydratable concentrated surfactant composition has a viscosity of from 8,000 to 200,000 mPas−1 (cps), when measured at 30° C. on a Brookfield DV2T using a Spindle RV-05 at 20 rpm for 60 seconds on a Helipath stand; and wherein the weight ratio of a) the anionic surfactant to b) the co-surfactant is from 3:1 to 10:1, wherein the weight ratio of sodium benzoate (c) to total surfactant (a)+(b) is 1:5-1:75, preferably from 1:10-1:65, more preferably 1:15-1:50.

The invention relates to the fields of colloidal chemistry and medicinal chemistry. A surfactant containing branched hydrophobic chains with amino acid residues at the branching point is characterized by general formula (I), where R1-A-R2 represents an amino acid residue; k can be equal to 1, 2 or 3; l can be equal to 3, 4, 5, 6 or 7; the amino acid residue has an L configuration; R1 and R2 are the same or different residues from the list shown; m is an integer from 4 to 13. New compounds are obtained which provide for better binding of molecules inside lipid nanoparticles (LNPs), as well as more uniform packing of molecules inside LNPs, without the formation of ordered phases such as a lamellar phase.

The invention relates to a homogeneous out-phase junction catalyst, a preparation method and application in antibiotic degradation, and belongs to the field of antibiotic degradation, the homogeneous out-phase junction catalyst is prepared by the following steps: uniformly mixing a potassium permanganate solution and a manganese sulfate monohydrate solution, and then adjusting the pH value of the obtained mixed solution to 9-10.5 to obtain a precursor solution; the preparation method comprises the following steps: carrying out hydrothermal treatment on a precursor solution at 90-150 DEG C, washing and drying the obtained product to obtain an alpha / delta-MnO2 homogeneous out-phase junction catalyst, forming an atomic-scale continuous coherent interface by utilizing lattice matching between an alpha phase and a delta phase, and forming a continuous Mn-O-Mn bridged bond on the microstructure of the interface. The special continuous lattice arrangement mode reduces an interface electron transmission barrier, so that an electron transmission channel for connecting a layered phase and a tunnel phase is established, and adsorbed ozone molecules can receive electrons more quickly and are activated and decomposed.

The invention provides a thermoplastic polyvinyl alcohol-based semi-interpenetrating network composite material as well as a preparation method and application thereof, and belongs to the field of high polymer material processing. According to the method, a semi-interpenetrating system is constructed through an amphiphilic monomer dodecyl methacrylamide acid self-assembled layered phase and a PVA / polyacrylic acid linear hydrophilic network, PDIA hydrophobic alkyl chains are subjected to cohesion to form a nanometer layered core, and carboxyl topology of the nanometer layered core is anchored to a PVA hydroxyl network; acrylic acid is used as a non-amphiphilic component to provide a hydrogen bond cross-linked skeleton and maintain the dispersion stability of PDIA, and cooperates with a PDIA hydrophobic chain segment to induce intercalation stripping of a nanosheet layer. The structure triggers a dynamic sliding effect at the temperature of more than or equal to 100 DEG C, so that an alkyl chain is recombined to reduce the melt viscosity, a hot-pressing applicable viscosity window of 104-105 Pa.s is maintained at the temperature of 100-130 DEG C, the inherent processing window limitation and phase separation inhibition of PVA are synchronously broken through, and an industrial feasible scheme is provided for PVA hot-pressing molding.