Blended strategy

In mbber-mbber blends, maldistribution of curatives such as sulfur, accelerator, and activator due to their difference in solubility and diffusivity leads to uneven distribution. Blending strategies such as adding the accelerators to each mbber followed by blending the two mixed batches has been found to be more effective than blending the curatives into both mbbers in a single step. Selection of... 

Fig. 1 Nanofiber modification strategies. In step 1, many polymer and solution properties will affect the size, stability, and reactivity of nanofihers in the final mat, including multipolymer blending strategies, incorporation of soluble factors/drugs/spheres, and/or loading concentrations. In step 2, during spinning, the ambient conditions and voltage applied must be tailored for each polymer source and can be dictated by the nature of the collector or the number of jets employed simultaneously. In step 5, the as-spun mat can be modified by various crosslinking techniques to stabilize the polymers or, in the case of soluble or carrier polymers, these can be leached out by subsequent liquid washes...

On the other hand, blending strategies are bulk functionalisation techniques which may impart bioactivity to the material. However, through blending, the whole bulk properties of the material, including the mechanical properties, are affected. The... 

The preparation methods for polymer-clay nanocomposites can be classified into two approaches. One is blending of polymers with clay either in solution or in melt. Because of the large scale and low mobility of polymer chains, usually intercalated polymer-clay nanocomposites are obtained with this blending strategy. The other method is in situ polymerization.Clay is first... 

As in the example for polyethylene, UV absorbers also offer an added benefit when used with hindered amines in impigmented, thick section parts. This stabihzation blend strategy was confirmed in the cmrent study illustrated in Figure 3. HALS 2 with UVA 1 provides bulk property (Impact Strength) to about 25,000 kJ vmder xenon exposme. A high MW HALS fares a httle better to 28,000 kJ. However, the combination of the two with UVA 1 afford the best performance - out to almost 40,000 kJ, a 40% improvement over HALS 1 alone. 

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