PURPOSE
Acquiring knowledge about surface and interface phenomena that play a key role in the engineering of multicomponent materials.
Studying of surface analysis and modification approaches with the aim to optimise interface and improve material properties as a whole.
THE CONTENTS OF THE COURSE:
Surface phenomena. The processes at surfaces. Surface tension and surface energy. Terminology. Interfacial energy. Wetting and spreading. The surface energy and work of adhesion. Young's equation and the work of adhesion. The characteristics of the surface and the contact angle. Characterization of surfaces by contact angle measurement.
Adhesion. Definition and theory. The science of adhesion. Basic and practical adhesion. Theories of adhesion: mechanical, adsorption, chemical, electrostatic, diffusion, other theories. Adhesion at interfaces in multiphase systems.
Interfaces in adhesive joints. Fundamentals of bonding technology. Surface preparation for adhesive bonding. Adhesive classifications and applications.
Superhydrophobicity. Surface morphology, water-repellent nature of a lotus leaf surface. Self-cleaning effect. Practical applications.
Polymer surface. Thermodynamics of polymer surfaces. Surface modification of polymers. The reasons for the modification. Pretreatment of the polymer surface. Methods of pretreatment: mechanical, chemical, oxidation, flame, plasma. Characterization of polymer surfaces. Characterization techniques: AES, XPS, SIMS, EPMA, ATR.
Polymer-polymer interface. Examples. Compatibility of the polymer. Symmetrical polymer interface. Self-adhesion. Asymmetrical polymer interface. The thickness and strength of the interface. The conformation of the polymer chains at the interface.
Interface in polymer blends. Miscible and immiscible polymers. Interphase in the blends. Compatibilization in blends.
Interface in polymer composites. Influence of adhesion on the morphology, mechanisms of failure, and mechanical properties. Influence of interfacial properties: microcomposites vs. nanocomposites. Modification of interface in nanocomposites. New advanced materials.
GENERAL AND SPECIFIC COMPETENCE:
General competences of students are extended with the knowledge about phenomena of surface and interface, as well as the possibilities of engineering changes which alter the structure and properties of surfaces and materials as a whole as an innovative way to new materials. Specific competences are related to exploring and modifying the processes that occur on surfaces in industrial applications such as adhesion. This knowledge is crucial in the adhesion of connecting elements, processing and formulation of new advanced multiphase materials.
STUDENT RESPONSIBILITIES
Attendance to all forms of teaching is obligatory, at least 75 %.
Oral exam is possible only on the personal request or in special occasions.
FORMAT OF INSTRUCTION
Lectures (ex cathedra)
MONITORING STUDENT WORK
Lectures: Final exam (written)
MONITORING TEACHER WORK
Student survey
LEARNING OUTCOMES AT THE COURSE LEVEL
1. to explain and analyse the surface and interfacial phenomena (surface free energy and interface thermodynamic parameters, adhesion) in the engineering of materials;
2. to analyse and conclude about chemical and structural characteristics of surfaces and interfaces in relation to the production and properties of materials (composites, blends, adhesive materials);
3. to choose how to modify the surface and to change the interface between components in the multicomponent systems;
4. to use various surface analysis methods to evaluate the properties and quality of the material as a whole;
5. to link the elements of optimization of the adhesion in order to improve the properties of materials in the given application conditions.
LEARNING OUTCOMES AT THE STUDY PROGRAMME LEVEL
1. to integrate scientific principles of materials science and engineering: structure, properties, processing and application of materials
2. to relate expert knowledge in materials science and engineering with awareness of its societal, economic and environmental impacts
3. to analyse information from various sources
4. to interrelate results from various methods with scientific literature in order to interpret them as well as possible
5. to explain results of their work to non-experts, experts in other fields and international partners
COMPULSORY LITERATURE
1. Lectures handouts, 2018.
2. D. E. Packham (Ed), Handbook of Adhesion, Longman Group, United Kingdom, 1992
3. K. L. Mittal, Polymer Surface Modification; Relevance to Adhesion, VSP, Netherlands, Vol.2, 2000.
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