New water-based copolymer nanoparticles and their use as eco-friendly binders for industry of flexographic ink, part I

Abstract

Purpose The purpose of this paper is to prepare, characterise and evaluate nano-emulsions of copolymers of various compositions as eco-friendly binders for flexographic ink industry. Design/methodology/approach Various nano-emulsions of copolymers were prepared using styrene (St), butyl acrylate (BuAc), acrylic acid (AA) and acrylamide (AAm) monomers by means of a conventional seeded emulsion polymerisation technique, using K2S2O8 as the initiator. The characterisation of the prepared emulsions was performed using Fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), gel permeation chromatography (GPC) and transmission electron microscopy (TEM). A selection of copolymers was formulated with pigments and additional ingredients, as water-based flexographic inks. The inks were characterised for their viscosity, pH, degree of dispersion, water resistance and colour density. Findings It was found that the low viscosity of the prepared copolymers may reduce the film thickness of the flexographic inks and may also increase the spreading of the ink on the surface. As a result, stable modified polyacrylate-based latex with improved physico-mechanical properties were obtained. The prepared latexes were showed improving and enhancing in water resistance; gloss values, and the print density that ranged from 2.06 to 2.51 and the maximum gloss values (39 and 48) were also obtained. Also, these binders provide excellent adhesion properties for both the pigment particles and the base paper. Practical implications This study focuses on the preparation of new water-based copolymer nanoparticles and their use as eco-friendly binders for flexographic ink industry. Social implications The ink formulations developed could find use in industrial-scale printing. Originality/value Eco-friendly environment ink formulations for printing on paper substrates are novel.

Preparation and evaluation of antimicrobial thiadiazol azo disperse dyes as colored materials in digital transfer printing ink for printing onto polyester fabric

“…Insufficient storage stability can cause flocculation and settling of the prepared azo disperse dyes in the ink formulation, as well as changes in viscosity, color and ink odder. So, based on the biological activity of the prepared dyes and the use of appropriate additives for this formulation, microorganism growth was prevented, and the formulation still performed well (Abd El-Wahab et al , 2020; Elsawy et al , 2021).…”

Review of the Mechanistic and Structural Assessment of Binders in Electrodes for Lithium-Ion Batteries

“…In the Si/HBPEI anode, the Si nanoparticles and HBPEI were unevenly dispersed, leading to regions where these elements did not overlap well, as shown by EDX mapping, indicating a tendency for HBPEI, with its low viscosity, to self-aggregate, thus failing to completely cover the Si nanoparticles. In contrast, the anodes with the Alg or Alg-Ca binders showed no significant Nonwater-based binder [76,77] Advantages (i) Environmentally friendly [78] (i) Enhanced mechanical strength [79] (ii) Better compatibility with some electrode materials [80] (ii) Improved electrochemical performance [81] (iii) Wide range of material compatibility [82] Disadvantages (i) Lower mechanical strength compared to nonwater-based binders [83] (i) Potential solvent compatibility issues [84] (ii) Limited compatibility with some electrode materials [80] (ii) Higher cost [83] (iii) Potential environmental concerns [77]…”

A review of the green chemistry approaches to leather tanning in imparting sustainable leather manufacturing

“…96 Si nanoparticles modified with copolymer of methyl methacrylate and butyl acylate (SiNP–pMMA–BA) was also studied to reduce Cr consumption and also Cr load in the produced effluent. 97 Partial replacement of Cr with a nanocomposite of polycarboxylate and MMT, 98 and magnesium–aluminium-layered double hydroxide (MgAl–LDH) with 1 : 1 Mg : Al molar ratios with Cr, 99 were carried out to reduce the Cr load in the effluent.…”