Starch nucleating agent

Figure 7. The cell diameter as function of the injection speed for potato starch expandable beads with a water content of 10% at 180°C. NA denotes nucleating agent.

Uses Fungicide antimicrobial, preservative in pharmaceuticals and foods preservative for cosmetics, dental prods., starches, adhesives clinical reagent (bilirubin assay) nucleating agent for plastics corrosion inhibitor for antifreeze coolants, metals in impregnated paper, emulsion paints, wrapping materials, aerosol cans, sol. cutting oils mfg. of dyes rust inhibitor mildew inhibitor mold inhibitor for tobacco flavor-... 

Kose and Kondo studied tbe size effects of cellulose nanofibres on the crystallization behaviour of PLA. They discovered that the smaller size of cellulose nanofibres on tbe nanoscale does not necessarily make a better nucleating agent for PLA. Table 9.1 summarizes the Avrami kinetic parameters for the isothermal crystallization of the PLA and PLA biocomposites with different types of nanocelluloses as compared to PLA composites with talc and nanoclay. With the addition of unmodified and silylated CNCs as nucleating agents, the t 2 value increases with increasing T similar to that of nanoclay and com starch, but opposite to that of talc. Comparing the... 

The paper-like material consists of the following components (by weight) com starch 62%, poly(propylene-ethylene) 20%, polyethylene 7%, carbamide 1.8%, substituted bis(phenyl methylene) sorbitol (i.e., nucleating agent TM-3) 0.2%, epoxidized soybean oil 2.5%, polyester plasticizer 0.65%, antioxidant 2246 i.e., 2,2-methylene-bis(4-methyl-6-tert-butyl phenol) 0.5%, zinc stearate 0.7%, microciystalline wax 1.5%, calcium stearate 1.3%, talc 1.0%, and stearic acid 0.85%. ... 

Starch acts as the nucleating agent for poly(e-caprolactone) ciystallization. According to the Avrami theory, starch functioned as a nucleating agent to improve the ciystallinity rate of PCL. However, the XRD analysis revealed that the ciystallinity decreased Because mobility constraints existed in the PCL chains with the increasing starch concentration, the ciystallization ability of PCL decreased ... 

PLA phase, which exhibited improved interfaces between the PLA and starch, the starch may have acted as a nucleating agent for PLA, resulting in lower Tc values. For the Tm of PLA, it is interesting to note that the major discernible... 

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