Materials with multifunctionality or multiresponsiveness, especially polymers derived from green, renewable precursors, have recently attracted significant attention resulting from their technological impact. Nowadays, vegetable‐oil‐based waterborne polyurethanes (WPUs) are widely used in various fields, while strategies for simultaneous realization of their self‐healing, reprocessing, shape memory as well as high mechanical properties are still highly anticipated. We report development of a multifunctional castor‐oil‐based waterborne polyurethane with high strength using controlled amounts of dithiodiphenylamine. The polymer networks possessed high tensile strength up to 38 MPa as well as excellent self‐healing efficiency. Moreover, the WPU film exhibited a maximum recovery of 100 % of the original mechanical properties after reprocessing four times. The broad glass‐transition temperature of the samples endowed the films with a versatile shape‐memory effect, including a dual‐to‐quadruple shape‐memory effect.

Establishment of both mechanically robust yet facile healable and recyclable epoxy resin systems are highly desirable and still present significant challenges. Herein, by fully utilizing epoxidized vegetable oils and dithiol...

The development of biobased allyl monomers and their degradable thiol−ene polymers is of great importance for sustainable development and environmental protection. In this work, two biobased allyl monomers were designed and synthesized via esterification between 2,3,5,6-tetrafluoroterephthalic acid and renewable plant phenols (cardanol or eugenol). The cross-linking polymer networks were subsequently prepared by curing allyl monomers with two types of thiols as the curing agents via photoclick thiol−ene reaction under thermal treatment. The effect of the long side chain of the plant phenols and various functional of the thiols on the thermomechanical, thermal stability, and mechanical properties, solvent resistance, degradation properties, and optical behavior of the resulting thiol−ene polymer networks were systematically investigated. It was revealed that the resulting thiol−ene polymer networks exhibited high mechanical properties (tensile strength up to 15.97 MPa). All the thiol−ene polymer networks exhibited excellent thermal stability up to 283 °C and solvent resistance. Moreover, the obtained thiol−ene polymer networks exhibited fast degradation properties in a base solution due to the presence of electrodeficient ester bonds formed in the polymer backbones. This research established a facile method for preparation of biobased allyl monomers and degradable thiol−ene thermosets, which are promising to find application in various areas, such as coating, composites, adhesives, etc.

A mild and general protocol for photoredox initiated oxo-azolation of gem-difluoroalkenes has been demonstrated. The reaction strategy offers a facile access to a series synthetically useful azolated difluoroacetonarenes that may...

Materials with multifunctionality or multiresponsiveness, especially polymers derived from green, renewable precursors, have recently attracted significant attention resulting from their technological impact. Nowadays, vegetable‐oil‐based waterborne polyurethanes (WPUs) are widely used in various fields, while strategies for simultaneous realization of their self‐healing, reprocessing, shape memory as well as high mechanical properties are still highly anticipated. We report development of a multifunctional castor‐oil‐based waterborne polyurethane with high strength using controlled amounts of dithiodiphenylamine. The polymer networks possessed high tensile strength up to 38 MPa as well as excellent self‐healing efficiency. Moreover, the WPU film exhibited a maximum recovery of 100 % of the original mechanical properties after reprocessing four times. The broad glass‐transition temperature of the samples endowed the films with a versatile shape‐memory effect, including a dual‐to‐quadruple shape‐memory effect.