The effect of nonionic monomer HAM on properties of cationic surfactant‐free acrylic/alkyd hybrid emulsion

Abstract

A series of cationic acrylic/alkyd resin (CPAAR) hybrid emulsions was successfully prepared through surfactant-free emulsion polymerization, using methacryloxyethyltrimethyl ammonium chloride, methyl methacrylate, butyl acrylate and alkyd resin as reaction monomers. And nonionic N-hydroxymethyl acrylamide (HAM) of different content was simultaneously incorporated into the CPAAR backbone. The structure of CPAAR copolymer was characterized by Fourier transform infared spectrometer, and then the effect of HAM content on properties of CPAAR emulsions was studied by particle size analyzer, transmission electron microscopy and rheometer. In addition, thermal properties, water absorption and contact angle of CPAAR latex films were also investigated. The results showed that the CPAAR emulsions prepared with 4.9 wt % HAM displayed smallest average particle size of 92.2 nm. As HAM content increased from 0 to 19.6 wt %, the initial viscosity of the emulsions increased from 22.48 to 53 mPa.s. At the same time, the emulsions transferred from Newtonian fluid to pseudoplastic fluid, and a transition from viscous liquid to elastic liquid was also detected. Meanwhile, the degradation temperature at 5% weight loss increased by 30.59C. In addition, with increasing HAM content from 0 to 4.9 wt %, the water absorption and surface free energy of films increased by 4.42% and 5.02 mJ m 22 , respectively. However, the water absorption and surface free energy kept almost invariable with further increase in HAM content.

Electrochemical and anti‐corrosion behaviors of water dispersible graphene/acrylic modified alkyd resin latex composites coated carbon steel

“…At present, alkyd resin, epoxy resin, polyurethane resin, acrylic ester, and varieties of their modified resins have received great attention in the field of waterborne coatings. Among them, waterborne alkyd resin has become one of the hot topics in the field of waterborne anticorrosion coating because of its high cost‐effective and excellent performance …”

Heat resistance of acrylic pressure‐sensitive adhesives based on commercial curing agents and UV/heat curing systems

“…TGA is used to study the thermal stability of materials, and it is a common way of detection in scientific studies. The thermal stability of cured acrylic PSAs was evaluated by the degradation temperature of 5 wt % weight loss ( T loss 5% ), maximum‐rate degradation temperature ( T loss max ), and char yield under nitrogen atmosphere, which were obtained from thermogravimetric (TG) curves and derivative thermogravimetric (DTG) curves . Figure shows the TG and DTG curves of PSAs.…”

Coupled effect of water absorption and ion transport in hydrated latex anti-corrosion coatings

“…Indeed, raising film hydrophobicity by increasing the concentration of fluorinated monomers [9][10][11][12][13][14][15][16] has been shown effective in reducing water absorption, but fluorinated latexes are limited by high financial cost 10,11,13 and difficulty in synthesis due to chemical incompatibility between fluorinated molecules and water. 12,15 Raising film hydrophilicity has the opposite effect, as increasing concentration of polar functional groups, such as carboxylic acid, 8,17 hydroxyl 8,[18][19][20] and sulfonic acid, 21 raises water absorption. Another important aspect, polymer mechanical properties also influence water absorption.…”