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Article
Publication date: 20 September 2024

Lijun Chen, Wanting Zhao and Zheqing Gong

The traditional VeoVa10-VAc copolymer latex, which prepared via the emulsion polymerization of the mixed monomers of VAc and VeoVa10, has the poor water resistance and thermal…

Abstract

Purpose

The traditional VeoVa10-VAc copolymer latex, which prepared via the emulsion polymerization of the mixed monomers of VAc and VeoVa10, has the poor water resistance and thermal stability because of the migration of the conventional emulsifier molecules and the low bond energy of C-C bond. The purpose of this work is that the fluorinated monomer is used to modify the latex. The film of the resultant latex has the C-F bond with high bond energy and low surface energy, which can effectively improve the heat resistance and water resistance of the resultant film. In addition, the reactive emulsifier is used to replace the conventional emulsifier. The drawbacks of the conventional emulsifier molecules migrate and desorb can be avoided when the polymer latex is stored, thereby also improving the water resistance.

Design/methodology/approach

The modified VAc-VeoVa10 latex has been successfully synthesized via the semi-continuous seeded emulsion polymerization, which VAc and VeoVa10 is used as the main monomers and HFMA was used as the functional monomer. KPS and reactive surfactants of SE-10 were used as the initiator and emulsifier, respectively. The structure of resultant latex film was characterized by Fourier transform infrared spectroscopy (FTIR). The latex films were tested by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and contact angle (CA). The particle size and its distribution of the latex were measured by the nano particle size analyzer.

Findings

The factors that had an influence on the properties of the latex and the film were investigated in detail. The stability of the resultant latex is good. The average particles of the latex and its distribution are small and uniform, respectively. In comparison with the conventional latex film, the thermal stability and hydrophobicity of the resultant latex film are improved obviously.

Practical implications

The resultant latex can be used in both the waterborne interior and exterior wall coatings, pickering stabilized waterborne polymer dispersions, polymer powders, environmentally friendly polymer-modified waterproof mortar and other fields, which can be satisfied with the high demand of thermal stability and hydrophobicity.

Originality/value

The modification of poly (VAc-VeoVa10) by reactive surfactant and fluorinated monomer is seldom reported. In this study, the fluorinated poly (VAC-VeoVa) latex is prepared via the reactive surfactants, which VAc and VeoVa10 is used as the main monomers and hexafluorobutyl methacrylate is used as the functional monomer. Potassium persulfate (KPS) and allyl nonyl phenoxy propyl alcohol polyoxyethylene ether ammonium sulfate are used as the initiator and emulsifier, respectively.

Details

Pigment & Resin Technology, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 6 September 2024

Muhammad Junaid Ahsan

This quantitative study, rooted in the resource-based view (RBV) theory, aims to investigate the relationships among green transformational leadership, green process innovation…

Abstract

Purpose

This quantitative study, rooted in the resource-based view (RBV) theory, aims to investigate the relationships among green transformational leadership, green process innovation, employee environmental beliefs and firm environmental performance in Italian manufacturing companies. This study unfolds a nuanced narrative of how strategic green transformational leadership, coupled with environmentally conscious processes, can synergistically enhance an organization's overall environmental performance.

Design/methodology/approach

The multi-item survey questionnaire used in this study was distributed to leaders in a diverse sample of Italian companies. A total of 296 valid responses were obtained from the surveys. The collected data were analysed using statistical methods such as correlation, confirmatory factor and structural equation modelling using SPSS software.

Findings

The direct influence of green transformational leadership on firm environmental performance is supported. It also confirms the positive impact of green process innovation on environmental outcomes. It identifies green process innovation as a mediator between green transformational leadership and firm environmental performance, and employee environmental beliefs moderate the link between green transformational leadership and firm environmental performance.

Research limitations/implications

This research contributes by advancing understanding within the RBV framework by elucidating the specific mechanisms through which green transformational leadership programs promote green process innovation, enhance environmental performance for organizational success, achieve sustainability goals and foster collaboration and stakeholder engagement.

Practical implications

This study emphasizes the significance of establishing green leadership programs, encouraging green process innovation and systematically monitoring environmental performance to accomplish organizational success and sustainability goals.

Originality/value

This study presents a novel and original examination by integrating the RBV theory on the relationships between green transformational leadership, green process innovation and firm environmental performance, shedding new light on the role of employee environmental beliefs.

Details

International Journal of Organizational Analysis, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1934-8835

Keywords

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