Effect of the acrylic acid content on the permeability and water uptake of poly(styrene-co-butyl acrylate) latex films

Abstract

Acrylic acid (AA) is a monomer commonly employed in emulsion polymerization to provide electrostatic colloidal stability and improve specific film performance. The addition of AA not only modifies the kinetics of the polymerization, but also it takes part in the interaction between colloidal particles, which has a strong influence on their packing and consequent latex film properties. In this contribution a theoretical modeling of the latex film formation is presented and compared to experimental results: water vapor permeability and latex film capacitance are studied as a function of AA content. It has been shown that water uptake is mainly affected by film morphology which in turn is defined by intercolloidal interaction and drying rate.

pH Dependence of the Properties of Waterborne Pressure-Sensitive Adhesives Containing Acrylic Acid

“…The presence of the hydrophilic AA groups imparts colloidal stability in the wet state, and interactions between the groups have pronounced effects on various physical properties, e.g., viscoelasticities (18)(19)(20), polymer diffusion (21), and barrier properties (21,22) in the dry films.…”

Acrylic-based composite latexes containing nano-sized liquid crystalline domains

“…The liquid crystalline domains act as a barrier for water vapor by increasing the tortuosity of the diffusion path, reducing thereby the diffusion rate. Moreover, for the samples containing n-MLCMs, the acrylic acid content is lower, which lowered the water sensitivity of the films in comparison with the amorphous copolymer in Run C [44]. Fig.…”

Effect of annealing on the phase structure and the properties of the film formed from P(St-co-BA)/P(MMA-co-BA) composite latex

“…Water vapor transfer is carried out through the interstitial voids left between the colloidal particles, cracks, channels, defects, and hydrophilic domains of the film. The measurement of latex film permeability may help to infer the internal film morphology [36,37]. The experimental results show that the amount of water permeating through the composite film is linear with time.…”