Lai, Chiu-Chun published the artcileSynthesis and properties of low-crystallinity nylon 6 with high transparency and low hygroscopicity containing adipic acid, Safety of 4,4-Diaminodicyclohexyl methane, the publication is Modern Physics Letters B (2020), 34(7/9), 2040005, database is CAplus.
In this research, a series of amorphous nylons 6 were prepared by introducing adipic acid and different structure amines into the copolymerization with caprolactam. The effects including thermal properties, crystallinity, dynamic mech. properties, optical properties, and water absorption of different copolymerization structure and copolymerization ratio on the properties of nylon 6 were investigated. The results show the m.p. and thermal cracking temperature Td 5 of nylon 6 are, resp., between 179°C and 217°C and 278°C to 336°C. Nylon 6 structure introducing a Me side chain is more effective than a meta-benzene ring, a meta-cycloalkyl, and bicycloalkyl groups, so CAMM and CAI have the lowest crystallinity.
Modern Physics Letters B published new progress about 1761-71-3. 1761-71-3 belongs to quinuclidine, auxiliary class Ploymers, name is 4,4-Diaminodicyclohexyl methane, and the molecular formula is C13H26N2, Safety of 4,4-Diaminodicyclohexyl methane.
Referemce:
https://en.wikipedia.org/wiki/Quinuclidine,
Quinuclidine | C7H13N | ChemSpider