Selective conversion of stearic acid into high-added value octadecanedioic acid using air and transition metal acetate bromide catalyst: Kinetics, pathway and process optimization

Sultana, Nazmun; Guria, Chandan; Saxena, V. K.

doi:10.1016/j.arabjc.2018.05.001

Cited by 4 publications

(1 citation statement)

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“…To be even more sustainable, full use of available bio-based carbon should be achieved for the synthesis of plant oil-based polyamides. The use of cobalt and manganese salts together with hydrogen bromide, for example, enables the full use of bio-based carbon for the synthesis of azelaic acid. , In this one-pot reaction, the byproduct pelargonic acid is oxidized to form azelaic acid, reaching 100% atom efficiency. Another method for the synthesis of linear aliphatic diacids with 100% atom efficiency is isomerizing methoxycarbonylation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and the Potential for Closed Loop Recycling of Plant Oil-Based PA X.19 Polyamides

Rist

Greiner

2022

ACS Sustainable Chem. Eng.

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We report on plant oil-based linear aliphatic polyamides from 1.19-nonadecanedioic acid and aliphatic diamines of different chain lengths. Their thermal, mechanical, and rheological properties as well as the water uptake and crystalline structures were analyzed. The polyamides were synthesized with high molecular weights of 26 000 to 52 000. All polyamides showed high thermal stability with T 5% of >400 °C as well as high crystallinities of ∼50%. Injection molding of the plant-oil-based polyamides was successfully performed to produce tensile test specimens. Chemical recycling of the polyamides was demonstrated by microwave-assisted hydrolysis, with a recovery of 99% for 1.19-nonadecanedioic acid. Melt polycondensation using the recovered monomer was successfully performed to synthesize recycled polyamide in similar quality, which underlines its potential for closed loop recycling.

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Section: Introductionmentioning

confidence: 99%