Ali, Mohammad Asif published the artcileHigh-Performance BioNylons from Itaconic and Amino Acids with Pepsin Degradability, SDS of cas: 617-52-7, the publication is Advanced Sustainable Systems (2022), 6(2), 2100052, database is CAplus.
The use of renewable feedstock for polymers has led to poor thermomech. properties with high production costs. Herein, the production of novel chiral dicarboxylic acids derived from renewable itaconic and amino acids (D- or L-leucine) is reported. In this study, rigid chiral heterocyclic dicarboxylic acid monomers are obtained with high purity from itaconic acid-derived di-Me itaconate as a starting material. Chirally interactive polyamides are prepared via melt polycondensation of hexamethylenediamine with heterocyclic diacid monomers. Further studies are conducted on D- or L-leucine-derived polyamides with homochirality that are fully amorphous. In contrast, the crystallization degree of the composite of D-leucine-derived polymer chains with L-leucine-derived chains increases to 36%, presumably due to enhanced interaction between polymer chains with different chiralities. The chirally-interacting composite shows a glass transition temperature, Tg, of approx. 117°C and a melting temperature, Tm, of approx. 213°C, which are higher than those of conventional polyamides such as polyamide 11 (Tg of approx. 57°C). The composite also shows high Young’s moduli, E, and mech. strengths σ, ranging from 2.2-3.8 GPa and 86-108 MPa, resp. In addition, the polyamides show degradability with a digestive enzyme, pepsin.
Advanced Sustainable Systems published new progress about 617-52-7. 617-52-7 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Aliphatic hydrocarbon chain,Ester, name is Dimethyl itaconate, and the molecular formula is C7H10O4, SDS of cas: 617-52-7.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics