Novel Anisotropic Janus Composite Particles Based on Urushiol-erbium Chelate Polymer/Polystyrene

Abstract

Janus particles are mainly composed of synthesis polymer. Herein, the natural product of urushiol is used to fabricate Janus particles. The erbium ion absorbed on polystyrene (PS) reacted with urushiol, and then the urushiol-erbium chelate polymer (UEr) shell formed. The UEr-PS Janus particles originated from the swelling of UEr/PS core-shell structure. The UEr-PS Janus particles were compartmentalized two parts with different morphologies and chemical compositions. The thickness of UEr shell could be controlled by adjusting sulfonated time. The UEr-PS Janus particles possess the characteristics of urushiol and erbium, which were expected to use in oriented materials.

Effects of Fe Ions, Ultraviolet Irradiation, and Heating on Microscopic Structures of Black Lacquer Films

“…Figure a shows the FT-IR spectra of F-plain, F-FeCl 3 , F-FeCl 3 -H, and F-FeCl 3 -U. The spectra of all the samples contained characteristic peaks corresponding to CC stretching at around 973 and 988 cm –1 , , C–O–C stretching at around 1035 cm –1 , C–O stretching at around 1205 and 1272 cm –1 , , benzene-ring stretching at around 1618 cm –1 , C–H stretching at around 2852 and 2923 cm –1 , ,, and O–H stretching at 3100–3800 cm –1 . ,, The peak assignments are shown in Table . The spectra of all of the samples had similar shapes.…”

Fabrication of anisotropic janus composite particles based on natural renewable urushiol

“…Urushiol is a catechol compound with a long unsaturated side chain .The Phenolic hydroxyl is apt to forming coordination bonds with some metal elements with empty orbits.The unsaturated side chains of urushiol can polymerized further in the presence of the metal elements, which results in the formation of urushiol metal chelate polymer. Based on the reaction of urushiol and metal elements, Chen synthesized anisotropic UFe‐PMPS and UEr‐PS . As a kind of rare earth elements, praseodymium element is mainly used for preparation of ceramics, catalyst of petroleum pyrolysis, magnetic materials and so on .…”