Description:
Organosilanes can be used to modify the surface chemistry of inorganic substrates for the purpose of controlling wetting and adhesion characteristics. Pendent functional groups can be selected to maximize the potential for wetting or for covalent bonding; or to achieve surface chelation with metals. For example, tri-alkoxysilanes can be used to modify the hydrophobicity and lipophilicity of inorganic oxide pigments for use in cosmetics applications, or to modify the dispersion characteristics of oxide powders for use in ceramics processing. Surface treatments can also be used to improve the adhesion and dispersion characteristics of inorganic particulates within solid polymeric coatings and composites. Moreover, because of their ability to self-polymerize, organosilanes can also be used to form interpenetrating networks with polymers to improve macroscopic adhesion and bonding characteristics; or to form stand-alone coatings to provide corrosion protection to metals. During processing, silanes can be delivered directly to inorganic surfaces in neat form, or via solution vehicles. Silanes can also be added directly to liquid dispersions, or even to solid polymer formulations. However, regardless of the processing approach, the key to success with these materials is knowing how and when to control hydrolysis reactions within the context of any given manufacturing process. This seminar is the first in a series aimed at exploring silane chemistry, characterization, formulating, and processing with an emphasis on hydrolysis control. Each seminar will focus on mechanistic and practical considerations pertaining to real-world applications. Those who attend can expect to learn about how and when to control the key factors that affect silane efficacy.The webinar presentation includes: • Review of wetting and adhesion concepts; • Overview of organosilanes – general structures and applications; • Hydrolysis & polymerization chemistry: mechanisms and key factors; • Interactions with surfaces & polymers

Speaker:
Anthony Parker, Ph.D. is a Principal Scientist and founder of A. A. Parker Consulting, LLC. Dr. Parker has 35 years of industrial experience in research, development, and management. He has been involved in multiple start-up businesses ranging from medical devices and musical instrument strings to packaging adhesives, pharmaceutical delivery systems, and cosmetics. His interests and expertise are in the areas of surface chemistry and adhesion, bio-based materials and adhesives, mechanical properties of polymers, structure-property-process relationships in polymers, thermal analytical methods, spectroscopic methods (NMR, FTIR), UV curable coatings, and musical strings/ instruments. Dr. Parker has authored or co-authored more than 70 publications, including 30+ journal articles and technical reviews as well as 40+ patents with several patents pending.

Description:
Moisture cured, one component, reactive polyurethane (PU) adhesives are formulated using an isocyanate and amorphous and crystalline polyols of varying composition which are reacted to form a polyurethane prepolymers. These prepolymers can be liquid or they can be solid at room temperature. If they are solid at room temperature, they are considered reactive hot melt adhesives. All reactive PU adhesives contain residual isocyanate functionality that is reactive with moisture that comes from the atmosphere and/or the surface to be bonded. Reactive PU adhesives contain catalysts to promote the moisture cure and also contain other additives to control rheology, open time and strength of the resulting polyurethane polymer. The choice of polyols, based on performance requirements is an important factor in formulating any polyurethane system. Designing reactive, one component adhesives is no different. Understanding how isocyanate and polyol structure affect reactivity and the physical properties of the formulated adhesive is an important aspect of formulation, which this webinar is intended to provide. The presentation includes: An introduction to adhesive considerations, Comparison of PUR adhesive systems, the chemistry of isocyanates and polyols, Formulating from a Structure / Property perspective, Summary of important concepts

Speaker:
Dr. Joseph Marcinko, Principal Scientist and President of Polymer Synergies LLC Dr. Marcinko has over 30 years of industrial R&D, research management, and academic experience. His interests and expertise are in the areas of polyurethane chemistry, bio-polymers, adhesion science, wood composites, polymer characterization, solid-state NMR spectroscopy, and polymer structure-property relationships. He is an adjunct professor and a developer of industrial short courses related to polyurethane and polymer chemistry and industrial problem solving. Dr. Marcinko has authored over 50 publications, and has 9 patents and 7 patents pending.

Description:
FTIR spectroscopy is a powerful technique for studying the effects of polymer formulation and process factors on surface chemistry, component compatibility, and morphology; all of which relate to end-use performance characteristics like adhesion and mechanical properties. Of the many techniques available, surface attenuated total reflectance spectroscopy (SATR-FTIR) is arguably one of the most versatile FTIR methods, enabling the study of neat liquids, solutions, dispersions, solid films, solid powders, adhesives, adherends, and countless other multi-component systems. Aside from being fast, SATR can be applied in problem-solving situations pertaining to cure reactions (liquid and dispersion states), surface compositions & adhesion, process history & surface heterogeneity (e.g., extruded films), material structure, and product/process control. This seminar, although focused on SATR, will be the first in a series pertaining to applications of spectroscopic methods in product and process development. Those attending can expect to learn how SATR-FTIR can be applied to their own real-world product development & problem-solving situations. The webinar presentation includes: • Overview of FTIR spectroscopy & methods; • Description of the SATR technique; • Example Applications - Adhesion, Surface migration, Extruded film heterogeneity, Polymerization reactions, Material structure & composition

Speaker:
Anthony Parker, Ph.D. is a Principal Scientist and founder of A. A. Parker Consulting, LLC. Dr. Parker has 35 years of industrial experience in research, development, and management. He has been involved in multiple start-up businesses ranging from medical devices and musical instrument strings to packaging adhesives, pharmaceutical delivery systems, and cosmetics. His interests and expertise are in the areas of surface chemistry and adhesion, bio-based materials and adhesives, mechanical properties of polymers, structure-property-process relationships in polymers, thermal analytical methods, spectroscopic methods (NMR, FTIR), UV curable coatings, and musical strings/ instruments. Dr. Parker has authored or co-authored more than 70 publications, including 30+ journal articles and technical reviews as well as 40+ patents with several patents pending.