Inter-vesicle polymerization using nonionic oxyethylene-hydrogenated castor oil

Uda, Ryoko M.; Nishimoto, Noriko; Yamamoto, Masaya

doi:10.1016/j.colsurfa.2015.04.008

Cited by 2 publications

(1 citation statement)

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“…Obtained from the seeds of the castor plant, CO is a light yellow liquid used to produce many derivatives through familiar organic reactions (Figure ). The functional groups of CO include hydroxyl, carboxyl, and unsaturated double bond groups. − These functional groups can be epoxidized, esterified, and hydrogenated. The hydrolysis product of CO, ricinoleic acid, is a superior chemical feedstock for the preparation of plasticizers, elastomers, biolubricants, coatings, and other functional resins. − …”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Castor Oil-Based Dual Cross-Linked Polymer Networks with Polyurethane and Polyoxazolidinone Structures

Xia

Mao

et al. 2017

ACS Sustainable Chem. Eng.

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Dual cross-linked polymer networks (DCPNs) are novel copolymers containing two different cross-linking polymers with superior comprehensive properties. The aim of this study was to explore the feasibility of preparation of novel castor oil-based DCPNs material. First, two novel biobased reactive monomers of epoxidized castor oil (ECO) and ricinoleic acid epoxy (RAE), containing both hydroxy and epoxy groups, were synthesized from castor oil (CO). Their chemical structures were characterized by Fourier transforminfrared spectroscopy (FTIR) and 1H-nuclear magnetic resonance (1H NMR) analysis. Both hydroxy and epoxy groups can react with the isocyanate groups of toluene-2,4-diisocyanate (TDI), and then two renewable resource-based DCPNs of RAE/TDI and ECO/TDI, containing both polyurethane (PU) and polyoxazolidinone (POXDN) molecular structures, were designed and prepared. The tensile properties, gel content (GC), hardness, fractured surface morphologies, thermostabilities, and dynamic mechanical and thermal properties of these renewable resource-based copolymers were all investigated. Results show that the tensile properties, GC, hardness, and glass transition temperature (T g) of the fabricated DCPNs were superior to those of the pure CO/TDI copolymerized system. The fabricated DCPNs, particularly RAE/TDI, were found to have good tensile strength of 12.47 MPa and the highest elongation at break of 154.99%, and its thermostability was also increased greatly compared with that of the pure CO/TDI copolymerized system.

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