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To overcome challenges in pigment dispersion, especially for difficult‐to‐disperse pigments like phthalocyanine blue, the structure of dispersants has been studied in recent years. Herein, we present the development and performance evaluation of a structured polymer dispersant for efficient dispersion of phthalocyanine blue and color paste preparation. The dispersant was synthesized using a two‐step free radical polymerization process, allowing precise control over its structure. The study investigates the impact of key factors on dispersion, including the molecular weight of the hydrophilic long‐chain poly(ethylene glycol) monomethyl ether (MPEG), the ratio of anchoring groups styrene (St) and dimethylaminoethyl methacrylate (DMAEMA), and the dispersant dosage. Optimal stability was achieved with MPEG‐400 as the hydrophilic long chain and a St:DMAEMA ratio of 1:1, along with a MPEG‐400AA:AA ratio of 0.5:1 at 2000 r min−1. At a dispersant dosage of 25%, the particle size of the color paste measured 340 nm, with viscosity reaching 600 mPa·s. The structured dispersant effectively synergized spatial potential resistance and electrostatic effects to achieve stable pigment dispersion. These findings offer promising prospects for advancing dispersant technologies, with implications for improving color‐based applications across various industries, such as paints, coatings, and inks. [ABSTRACT FROM AUTHOR]

The Temporal Decline of Social Support among Colorectal Can-cer Survivors: First Year Prospective Study

Mars is the target of deep space exploration. The first problem of landing on Mars and building a satellite base is the energy source. For more than 50 kW high power demand, space nuclear energy system has the advantages of high output power, large energy density, small area, short working time and so on. Super-critical CO2 Brayton cycle with sodium cooled fast reactor is the most promising power solution because of the high energy conversion efficiency. The thermodynamic model of super-critical CO2 Brayton cycle system with sodium cooled fast reactor as the heat source has been established. After the analysis of circulation process, the relationship between temperature, pressure and enthalpy at working point has been discussed, and the relationship of circulation efficiency has been deduced. The real gas model is used to correct the thermophysical properties of super-critical CO2. The thermal efficiency of the system is analyzed under the typical working condition of Mars surface. What’s more, the effects of pressure ratio, compressor inlet temperature, turbine inlet temperature, and the temperature ratio on the cycle efficiency are discussed to get the optimal cycle characteristic and condition parameters. [ABSTRACT FROM AUTHOR]