Estudi de la funcionalitat dels monòmers en la síntesi de polímers per l'acabat de la pell
- Autores: Jordi Gutiérrez Muntada
- Directores de la Tesis: Anna Bacardit Dalmases (dir. tes.), Lluís Ollé Otero (dir. tes.)
- Lectura: En la Universitat Politècnica de Catalunya (UPC) ( España ) en 2017
- Idioma: español
- Tribunal Calificador de la Tesis: Lázaro Vicente Cremades Oliver (presid.), Agustí Marsal Monje (secret.), Sílvia Sorolla Casellas (voc.)
- Materias:
- Enlaces
- Tesis en acceso abierto en: TDX
- Resumen
In the leather industry, the finish process uses many types of resins including butadiene, acrylic and polyurethanes, aided by auxiliaries as pigments, waxes etc. that give touch to different articles that are currently marketed.
This project tries to characterize a very particular time and extensive resins, acrylic resins. This is from a base polymer incorporating different functional groups; these groups will shape the functional acrylic resin and consequently will configure particular properties of the leather. It includes both chemical and physical information of each of the monomers.
Finally, we performed a series of comparative essays between the resins obtained in order to see specific characteristics of each.
The techniques used in the synthesis of the resins are considered "not aggressive" in the environment as they are performed in aqueous medium thus avoiding the use of volatile solvents.
The aim of this work is the synthesis and characterization of acrylic resins based on their functional groups.
It¿s divided into five parts.
1. Synthesis and characterization of acrylic resins based on functional monomers. Always know the features provided by the functional groups of the side chains in the leather finish.
2. Influence of surfactant on the characteristics of acrylic resin. In a resin without functional group to see how it influences the amount of surfactant in the behaviour of acrylic resin.
3- Influence of the concentration of functional groups in resins synthesized. Knowing what features provide functional groups in the acrylic resin due to its concentration.
4- View as acrylic resins synthesized respond to the action of conventional crosslinkers used in the leather industry.
5- Finally, as the last part, seeks a crosslinking reaction between the resin synthesized using functional groups used methods using reaction between resins using their functional groups.
Every resin contains a different functional group. The resins obtained will apply in the finished leather. The study includes both the application of the resin on the leather as some of the characteristics of the films obtained. There will be a base resin from here be added different monomers and assessed the effects on the resin original.
The resins will apply to leather with a normal production system. Subsequently, the finishing obtained will be evaluated following the analysis methods used in the finished leather. There will be several tests which follow internationally recognized standards (flex resistance, adhesion of the finish, and resistance to aggressive agents) ... in addition specifications own intrinsic the resin (solids, pH, and viscosity).
The purpose of this final chapter is to get a good performance and finished with good fastness two resins functionalized by reacting with each other. This way you could get freshly reticulate but using reactive resins. This system avoids the addition of products that contain restricted substances.
