Structural Units of Polymers

The polymers given in this chapter are divided into polyolefines, vinyl polymers, fluoropolymers, polyacrylics, polyacetals, polyamides, polyesters, polysulfones, polysulfides, polyimides, polyether ketones, cellulose, polyurethanes, and thermosets. The structural units of the polymers are as follows  

Poly( acrylonitrile), PAN Poly(vinyl acetate), PVAC  

ABS Poly(acrylonitrile-co-butadiene-co-styrene) PEI Poly(ether imide) 

ASA Poly(acrylonitrile-co-styrene-co-acrylester) PES Poly(ether sufibne) 

EAA Poly(ethylene-co-acrylic acid) PMP Poly(4-methylpenten-1) 

Poly(vinyl chloride), PVC Poly(vinyl carbazole), PVK  

The following ahhreviations are used in this chapter. The abbreviations are in accordance with international rules. THE trans tetrahydrofuran transverse 

DOP dioctyl phthalate CFa carbon fiber content = a mass%, e.g. 

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The rubbery amorphous state of polymers has the greatest correspondence with the liquid state of organic compounds. So it may be expected that the molar volume per structural unit of polymers in this state can be predicted by using the averaged values of the group contributions mentioned in Table 4.5 (Van Krevelen and Hoftyzer, 1969). 

The results of pyrolysis experiments with nearly 100 polymers enabled Van Krevelen (1975) to quantify the char-forming tendency, defined as the amount of char per structural unit divided by 12 (the atomic weight of carbon), i.e. the amount of C equivalents in the char per structural units of polymer. 

Structure unit of polymer %and Name of polymer Metal ion pH Capacity Molar (mg/g) capacity (mmole/g) ... 

If available, molecular structure and CAS number are represented. The molecular structure of the polymer is related to the vibrational modes. Carbon and hydrogen atoms of an aromatic unit are mostly not indicated. Polymers or structural units of polymers that can have a para-, meta-, or ortho-arrangement are drawn in the para-arrangement. The headline and structure of tables is shown in Fig. 12. 

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