Fabrication of anisotropic janus composite particles based on natural renewable urushiol

Abstract

Urushiol praseodymium‐polystyrene (UPr‐PS) Janus composite particles were synthesized by emulsion swelling assisted protruding from UPr/PS core‐shell composite microspheres. The effects of sulfonated time and the outer electronic configuration of metal on the shell of urushiol metal/PS composite microspheres, together with the effects of monomer type, monomer dosage and swelling time on the swelling behaviour, were studied. The morphology, chemical composition and thermal performance of UPr/PS core‐shell composite microspheres and UPr‐PS Janus composite particles were studied by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X‐ray analyzer (EDX), Thermogravimetric analysis (TG) and infrared spectrometer (IR). Results showed that the morphology could be controlled by the metal kind, the sulfonated time, the monomer type, the monomer dosage and the swelling time. Attributing to the novel anisotropic structure, the UPr‐PS Janus composite particles will be expected to be applied in oriented catalyst. POLYM. ENG. SCI., 59:411–417, 2019. © 2018 Society of Plastics Engineers

Sustainable phenolic thermosets coatings derived from urushiol

“…Urushiol, a long‐chain hydrocarbon phenol from lacquer sap, is a mixture of 3‐alkyl‐substituted catechol derivatives with n = 15 linear carbon chains containing 0–3 olefins, together with other minor phenolic liquids, such as those having n = 17 carbon chains. [ 25‐28 ] Scheme 1 shows a typical structure of urushiol. [ 25 ] The compound is obtained through the extraction of lacquer sap from the trees Rhus vernicifera (China, Korea, and Japan), Rhus succedanea (North Vietnam and Formosa), and Melanorrhoea usitate (Thailand and Burma).…”

Janus composites particles: Prepared via cross‐linking driven one‐step miniemulsion polymerization and as film‐forming material

“…23,[31][32][33][34][35][36][37][38] T in these cases to determine the resin flow ing times corresponding to different infilt Preceramic polycarbosilane polymers as precursors to make ceramic fibers 10,3 trix. [7][8][9]40,41 The chemical and volume ch pany ceramization of the polymer during documented in several studies. gap between the latex particles, which was relatively regular in the whole area and provide convenience for the passage of water vapor, and so Janus C-PA/SiO 2 film had the highest water vapor permeability.…”

“…5 Since then, the synthesis and properties of Janus latex particles have developed rapidly. 6 According to the different raw materials, Janus latex particles can be divided into polymers 7,8 and polymer/ inorganic composites. 9 The polymer/inorganic Janus latex particles are particularly attractive group of Janus due to the multifunctional hybrid composition.…”

“…23,[31][32][33][34][35][36][37][38] T in these cases to determine the resin flow ing times corresponding to different infilt Preceramic polycarbosilane polymers as precursors to make ceramic fibers 10,3 trix. [7][8][9]40,41 The chemical and volume ch pany ceramization of the polymer during documented in several studies. As mentioned in Scheme 1, DVB was a cross-linker with two vinyl groups on the para-position of benzene rings, which had a great influence on the cross-linking degree and morphology of composite latex particles.…”

“…23,[31][32][33][34][35][36][37][38] T in these cases to determine the resin flow ing times corresponding to different infilt Preceramic polycarbosilane polymers as precursors to make ceramic fibers 10,3 trix. [7][8][9]40,41 The chemical and volume ch pany ceramization of the polymer during documented in several studies. composed of 0.28 g of APS and a certain amount of water.…”