AImtraet--Due to side reactions, polymers (prepared by hydrolytic polymerization under the same conditions) of 7, 9 and 13-membered lactams differ in the number of macromolecules, in the content of acid and basic groups, and also in the ratio of basic and primary amine groups. Due to the different e
The effect of carboxylic and basic end-groups on the thermo-oxidation of hydrolytic polymers of lactams
✍ Scribed by B. Lánská; J. Šebenda
- Book ID
- 107754037
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 287 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0014-3057
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Carboxylic acids initiate the homolytic decomposition of 6-hydroperoxy-6-hexanelactam to alkoxyl and hydroxyl radicals and the reaction of the aldehyde formed from the alkoxyl with 6-hydroperoxy-6-hexanelactam giving monoamide of adipic acid. Polyamides with carboxylic end-groups are oxidized in a s
Under conditions where the rate of oxidation is not diffusion-controlled, the rate of oxidation of hydrolytic polymers of caprolactam is proportional to the amorphous fraction and independent of the nature of the crystalline phase. Sufficiently thin samples used for oxidation and prepared by cutting