Poly vinylbenzo- complexes

Moreover, intermacromolecular complex formation is applied to selective recovery of organic and metallic ions. For example, as shown in Table 27, Cu2+ ion is much more effectively precipitated by the polyelectrolyte complex than by one of its components520. Furthermore, polyelectrolyte complexes including some metal ions have been studied in recent years (see Sect. 3.2.). Crown ethers can bind certain cations they especially exhibit high affinity to K+. Smid et al.S21) synthesized poly(vinylbenzo-[18]-crown-6). Such polymers containing crown ether with K+ behave like polycations in solution and can interact with polyanions such as poly(carboxyHc acid) to generate a kind of polyelectrolyte complexes. Moreover, PAA may interact with the ether oxy-... 

However, the formation of CO, CO2, acetaldehyde, 4-vinylbenzoic acid, etc. shows that in fact the pyrolytic process of poly(ethylene terephthalate) is more complex. The molecule can break in other places, and group migrations may take place during pyrolysis. Benzoic acid, for example, may be generated from terephthalic acid that suffers a partial decarboxylation. 

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