Expert Details

Expert in Polyurethane (PU) Materials Development for various applications

Expert ID: 723336 Michigan, USA

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In 30 years working with polyurethanes, Expert has developed numerous types of polyurethane elastomers, foams, adhesives, coatings, and other products with specific application requirements.


In the past several years, her work has extensively involved development of polyurethanes for medical applications. The materials for medical applications need to meet a rigorous set of standards. As an example these materials must be non-toxic and biocompatible. For long-term implantation the materials also need to be biostable, resisting in-vivo degradation. Furthermore, the materials need to meet the specified application function.

In the past 5 years, Expert developed 3 different polyurethanes for surgical applications: 1) 2-component structural bone cement adhesive, 2) load-bearing surface for joint implants, and 3) porous foams for as scaffolding platform for tissue in-growth.

These materials are in different stages of development, with some of these products already receiving the FDA and CE approvals.

Over the past 30 years, Expert has developed and invented various polyurethane products that include rigid and flexible foams, elastomers, coatings, adhesives, sealants, etc. Her experiences in wide variety of polyurethanes often results in unique approach to product development. As an example, Expert was first to combine polyurethane foams with moisture-cured isocyanate resins to produce novel curable tapes used in medical immobilization and other applications.

The basic components in the synthesis of polyurethanes are isocyanates and polyols, which form urethane linkage. Under appropriate processing conditions, isocyanate may also form other linkages, such as urea, allophanate, biuret, isocyanurate, carbodiimide, uretdione, amide, imide, oxazolidone, etc.

In applications requiring good heat and thermal stability, polyurethane linkages are often not suitable as they starts to dissociate (break) at 100-140° C. Therefore, for higher temperature applications other linkages may be preferred such as urea, oxazolidone, isocyanurate, imide, etc.

The formation of these bonds is controlled by the selection of appropriate catalysts, reaction temperature, and composition of the starting components, etc. Expert has completed several studies of the kinetics and catalysis of formation of heat resistant groups, including oxazolidone, isocyanurate, and imides. The study on model reaction systems was extended to development of various heat resistant isocyanate-based products, such as isocyanurate foams, polyoxazolidone composites and coatings, polyimide foams, etc.

Evaluation of new type of cycloaliphatic isocyanate and its performance in polyurethanes. Development of new types of biodurable polyurethane foams for tissue in-growth application, their evaluation, preparation of foams and implants for in vitro-testing, including the development of various protocols for cleaning, sterilization, etc. Development of formulations and packaging for new type of bone cement for syrgical applications and assistance in various issues regarding in vitro and in vivo testing and EPA approval procedures

Expert may consult nationally and internationally, and is also local to the following cities: Detroit, Michigan - Warren, Michigan - Flint, Michigan - Sterling Heights, Michigan - Lansing, Michigan - Ann Arbor, Michigan - Livonia, Michigan - Dearborn, Michigan - Cleveland, Ohio - Toledo, Ohio

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Education

Year Degree Subject Institution
Year: 1985 Degree: Ph.D. Subject: Chemistry Institution: University of Zagreb, Croatia
Year: 1978 Degree: Masters Subject: Chemistry Institution: University of Zagreb, Croatia
Year: 1972 Degree: BS Subject: Chemistry Institution: University of Sarajevo, Bosnia

Work History

Years Employer Title Department Responsibilities
Years: 2001 to Present Employer: Undisclosed Title: Research Director Department: Responsibilities: Coordinates and leads contract R&D efforts for development of wide range of polyurethane materials with tailored properties for biomedical, electronics, construction, automotive, space, chemical, and agricultural applications. Her expertises are in polyurethanes foams, elastomers, structural adhesives, immobilization casts, blocked-isocyanate heat activated products, clear polyurethane cast elastomers, and hydrophilic polyurethanes. In addition to application development, she is routinely involved in evaluation of new and novel raw materials for polyurethanes. She had also coordinated studies on the environmental stability of isocyanates.
Years: 1988 to 2001 Employer: University of Detroit Mercy Title: Senior Research Scientist and Adjunct Professor Department: Polymer Institute Responsibilities: Conducted fundamental research and application development projects with focus on polyurethanes. These research efforts were primarily contract research projects sponsored by private sector and governmental agencies. She also coordinated research work of visiting scientists from around the globe and graduate students working on graduate thesis. Her area of research covered kinetics and mechanism of isocyanate-based reactions, structure-property relationship in polyurethane elastomers and foams (both rigid and flexible), development of heat resistant polymer properties (oxazolidone, isocyanurate, polyimides), fuel resistant foams, medical products (immobilization cast, artificial joints, drug release platform), acrylate/polyurethane blends, etc.
Years: 1974 to 1988 Employer: Academia and polyurethane industry, Bosnia and Herzegovina. Title: Various senior positions Department: Responsibilities:

Government Experience

Years Agency Role Description
Years: 1994 to 1996 Agency: EPA Role: Project coordinator Description: She was project coordinator in the studies related to utilization of isocyanate binders in solidification of various types of waste materials (e.g.automotive shredder residue, fly ash, etc.)

International Experience

Years Country / Region Summary
Years: 2004 to 2014 Country / Region: Puerto Rico Summary: The development of new adhesive product for electronic application
Years: 1992 to 1994 Country / Region: Mexico Summary: -Development of shoe adhesive-Consulting in spray systems for truck bedliners

Career Accomplishments

Associations / Societies
American Chemical Society
Awards / Recognition
1.Two time - Best poster award at the API Polyurethanes Conference;

2..Best paper award at the Polyurethanes World Congress

3.Best paper award at the SPI Annual Polyurethane Conference
Publications and Patents Summary
She has over 60 publications, 16 patents.
Two proceedings: Polyurethane Elastomers Workshops 2000, Polyurethane Elastomers Workshops 2001.

Additional Experience

Training / Seminars
She was principal organizer of Polyurethane Elastomer Workshop 2000 and 2002.
Vendor Selection
Continuosly searching suppliers of raw materials for polyurethane products, polyurethane products and application
Marketing Experience
- Formulation and packaging of new bone cement product;
- Specialty adhesives for electronics application;
- Immobilization casting with non-tack properties;
- Hydrophilic polyurethane products
Other Relevant Experience
-Education of graduate student in polymers and thesis advisor;
-Training in laboratory skills and fundamentals in polyurethanes

Language Skills

Language Proficiency
Bosnian, Croatian Fluent

Fields of Expertise

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