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Polymer chain, hydrolytic degradation

If moisture is present before the polymer is melted, hydrolytic degradation will occur upon heating. Each water molecule will break a chain, so increasing the total number of polymer chains by one. The effect on the average molecular weight will be as follows ... [Pg.405]

The aliphatic-aromatic diacid monomers were prepared from the reaction of bromoalkanoic acid methyl ester and p-hydroxy benzoic acid methyl ester. The polymers of carboxyphenoxy alkanoic add of n = 3, 5, and 7 methylenes were soluble in chlorinated hydrocarbons and melted at temperatures below 100 °C. Copolymers of these monomers melted at lower temperatures than the respective homopolymers. These polymers displayed zero-order hydrolytic degradation profile ranging from 2 to 10 weeks. Increasing the length of the alkanoic chain, decreased the degradation rate of the polymer (Fig. 3). [Pg.109]

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See also in sourсe #XX -- [ Pg.317 ]



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Chain degradation

Degradable polymers

Degradeable polymers

Hydrolytic

Hydrolytic degradation

Polymer degradation

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