M.A. Abd El-Ghaffar, Fayza A. Kantouch, Zainn M. Mahmoud, Karima Haggag, Ahmed I. Hashem and Abdelrahim A. Ramadan
The purpose of this paper is to prepare nano size micro-emulsion co-polymer particles based on butyl acrylate (BA)/acrylic acid (AAc) with high monomer/surfactant ratio. The study…
Abstract
Purpose
The purpose of this paper is to prepare nano size micro-emulsion co-polymer particles based on butyl acrylate (BA)/acrylic acid (AAc) with high monomer/surfactant ratio. The study involved the application of the prepared micro-emulsions co-polymers as textile pigment printing binders.
Design/methodology/approach
The micro-emulsion co-polymerisations processes were carried out with different mixtures of BA and AAc using modified process. Sodium dodecyl sulphate (SDS) and potassium peroxy disulphate/glucose were used as emulsifier and redox initiator, respectively. The prepared emulsion co-polymer was characterized via spectroscopic measurements, FT-IR, 1H-NMR and transmission electron microscope (TEM), in addition to thermal analysis. The prepared micro-emulsion co-polymers were applied as binders for pigment printing process onto cotton fabric, polyester and cotton/polyester blend by using flat screen technique. The optimum curing conditions were determined, colour strength and fastness properties of pigment printed areas to light, washing, perspiration and rubbing were evaluated. In addition, stiffness of the prints was studied.
Findings
The achieved results indicated that particle size and homogeneity of the prepared micro-emulsions depend on monomers weight ratio, initiator and emulsifier concentrations. On the other hand, the prints obtained using the prepared binders with optimum conditions have satisfactory fastness, good handle and high colour yield.
Research limitations/implications
Monomers were continuously and slowly added into the polymerising system with mild stirring to avoid disturbing the stability of the micro-emulsion. Also, emulsifier and initiator concentrations should be controlled to avoid coagulation.
Practical implications
The research provides textile pigment printing binder with nano particle size within the range of 24-48 nm. Using the prepared nano binders in pigment printing enhances the stiffness, handle, and fastnesses properties of the prints.
Originality/value
The prepared co-polymer binders showed high-performance physico-mechanical properties; in addition, the ultimate goal of this study is to prepare a nano size binder with high monomer/surfactant ratio using a modified micro-emulsion process.
Details
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Lara M. Al-Haddad, Zaid Saidat, Claire Seaman and Ali Meftah Gerged
This study examines the potential impact of capital structure on the financial performance of family-owned firms in Jordan.
Abstract
Purpose
This study examines the potential impact of capital structure on the financial performance of family-owned firms in Jordan.
Design/methodology/approach
Using panel data of 107 listed companies from 2019 to 2021, the authors use a multivariate regression model to empirically examine the role that family firms' capital structure can play in engendering financial performance in the short and long terms.
Findings
This study's evidence indicates that family businesses rely on equity as their primary source of funding. This approach has been proven to be detrimental to their financial performance, as evidenced by the negative impact of capital structure on family firms' financial performance in the current study.
Originality/value
Capital structure-related decisions are essential to a firm's performance. Thus, there have been numerous empirical studies examining the relationship between capital structure and corporate performance in various settings worldwide. However, the findings of these studies are inconclusive. Also, there are relatively few empirical studies investigating the association between capital structure and the performance of family firms in emerging countries, particularly Jordan. This study, therefore, addresses this empirical gap in extant literature.