Physical Properties of Selected Polymers

TABLE 1. Physical Properties of Selected Polymers Prepared According to Current Application Indicating the Favorable Balance between Refractive Index and Abbe Number... 

LACTEL PCL (2013) Chemical Physical Properties of Selected Polymers, http //www.absorbables.com/technical/properties.html (last accessed Jnne 2014). 

General Physical Properties of Selected Fluorine-Containing Polymers... 

Table 6.7 contains physical properties of selected fluorine-containing polymers described above. 

TABLE 2. Physical Properties of Selected n-Conjugated Polymers"... 

TABLE 1. Physical Properties of Iridium Polymers Terpolymerized with Selected Triphenylamine Comonomers Prepared According to the Current Invention... 

To solve a heat transfer problem in polymer processing, the geometrical boundaries over which heat transfer takes place must be defined, boundary conditions selected, and the nature of the physical properties of the polymer specified. 

Table 7.2. Selected Physical Properties of Substrate Polymers...

On the basis of the polymerization alone, it is difficult to specify definite dryer selection rules since typically polymer properties differ over a wide range. The choice of dryer is also limited by the physical properties of the polymers, e.g., polymer-handling characteristics, individual or closely related drying curves, properties of the emitted volatiles, limitations on temperature, and particle size and distribution requirements. Other factors include equipment space limitations, production rates, pollution control requirements, solvent recovery, thermal sensitivity, and product quality specifications. 

Depending on the relative content of L and D enantiomers, the physical properties of PLA polymers may vary widely, from semicrystalline products with melting points of 130-180 °C to amorphous glassy polymers with a Tg of 60 °C [42]. Selection of the appropriate PLA stereochemistry has a major effect on the polymer s physical properties, processability and biodegradability. 

Table 5.5 presents physical properties of selected unidirectional composite materials having a typical fiber volume fraction of 60 percent. The densities of all of the materials are considerably lower than that of aluminum, and some are lower than that of magnesium. This reflects the low densities of both fibers and matrix materials. The low densities of most polymers give PMCs a significant advantage over most MMCs and CMCs, all other things being equal. 

Table 111. Comparison of physical properties of selected polyhydroxyalkanoate polymers and petroleum-based plastics.

As a class assignment, each student should select one common polymer from the list below and prepare a one page infosheet that includes monomer and polymer structures, physical properties of the polymer, and applications or end products that the polymer is used in. The infosheets can be presented in class and copies made for students to become part of the class notes. 

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