A-nucleating agent

A low incidence of explosions has been reported when precipitation is effected without a nucleating agent and during the screening process. Precautions must be taken during detonator loading to prevent dusting and to maintain a scmpulously clean operation. 

Carbon black is also used as a pigment for paints and printing inks, as a nucleation agent in weather modifications, and as a solar energy absorber. About 70% of the worlds consumption of carbon black is used in the production of tires and tire products. Approximately 20% goes into other products such as footwear, belts, hoses, etc. and the rest is used in such items as paints, printing ink, etc. The world capacity of carbon black was approximately 17 billion pounds in 1998. U.S. projected consumption for the year 2003 is approximately 3.9 billion pounds. 

This unfavorable aging process is a major drawback for the commercial use of the PHB homopolymer. Reducing the spherulite radius by means of a nucleating agent did result in a minor increase of the maximum elongation by only a few percent, which is still insufficient for tough applications [18]. 

Since chemical nucleating agents actively scission PET chains as part of their action, a drop in PET intrinsic viscosity can result. One strategy to offset this accompanying molecular weight reduction is to use both a nucleating agent and a chain extender in combination. 

These newer PET formulations utilize not only a nucleating agent, but also a plasticizing agent [3-9], The crystallization rate of polymeric materials can be broken down into two different regions, i.e. nucleation-controlled and diffusion-controlled (Figure 15.3). In the injection molding process, hot polymer is injected... 

Acceleration Phenomenon on Solidification of CaCl2 6H2O nith a Nucleation Agent... 

Metal coordination is another important bonding opportunity with respect to self-assembly. This is important in many natural molecules such as hemoglobin and chlorophyll, where the metal atom acts both as the site of activity and as a centralizing agent with respect to shape and thus acts as a nucleating agent for self-assembly. 

Relatively clear thin films of lope may be obtained by the addition of a nucleating agent, such as sodium benzoate, and/or by quenching hot films. 

The incorporation of carbon nanotubes (CNT)s into polymer matrices has resulted in composites that exhibit increased thermal stability, modulus, strength, electrical and optical properties (33-35). Several investigations have concluded that carbon nanotubes can also act as a nucleating agents for polymer crystallization (36,37). 

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