Report from the 2nd Workshop on: Characterization and Modeling of the Interface/Interphase of Polymeric Materials and Systems December 7 and 8, 1998

Published

July 1, 1999

Author(s)

Tinh Nguyen, Charles C. Han, Richard R. Cavanagh, R Ryntz

Abstract

The interface/interphase region plays a fundamental role in a wide range of polymeric materials and systems such as polymer blends and alloys, nanocomposites, particle-filled systems, paints on plastics and metals, electronic packagings, and fiber-reinforced polymr composites. However, an understanding of the physical, chemical, mechanical and morphological properties of the interface/interphase and how it affects the performance and durability of polymeric materials and systems is still in its infancy. The National Institute of Standards and Technology, in collaboration with the Ford Motor Company, held a 2nd workshop on the Characterization and Modeling of the Interface/Interphase of Polymeric Materials and Systems at NIST on December 7 and 8, 1998.The workshop objectives were:1) To present lectures on the state-of-the-art in the characterization and modeling of the interface/interphase of polymeric materials and systems.2) To identify industry needs related to the characterization and modeling of the interface/interphase region of polymeric materials and systems.3) To draft a research agenda to address measurement and other needs of the industry as they relate to the interface/interphase region.4) To discuss the feasibility of forming a consortium on characterization and modeling of the interface/interphase region of polymeric materials and systems.Forty eight participants representing a cross section of interested parties attended the one-and-a-half-day workshop. To provide a background for working group discussions, 19 invited speakers presented lectures on the state-of-the-art in characterization and modeling of the interface/interphase of polymeric materials and systems. After the presentations, the participants were divided into two working groups, characterization and modeling, to discuss the industrial needs, and prepare recommendations for presentation at the summary session. Examples of industrial needs to which the groups drew attention in their reports were:Characterization: Reference materials. Low-cost, fast, real-time, on-line, large-area, high-resolution, chemical-specific characterization techniques. Characterization of disperison of fillers. Methods for better dispersion of fillers. Measuring adhesion and adhesion loss. Better understanding of the mechanisms of molecular interactions and degradation in the polymer/substrate interface/interphase region (polymer/polymer, polymer/filler, polymer/fiber, polymer/inorganic). Well-controlled weathering tests. Characterization of phase separations. Characterization of surface appearanceModeling: Modeling of polyolefin blends. Modeling of injection molding process. Modeling of surface properties. Modeling of multiphase transition. Modeling of effects of shear rate/temperature on interphase formation. Mechanical properties of the interphase (polymer/polymer, polymer/inorganic)Role of NIST and IndustryIndustry: Serves as validator and provides direction vector for areas of involvement.NIST: Helps identify needs and provides measurements and models.

Citation

NIST Interagency/Internal Report (NISTIR) - 6352

Report Number

6352

NIST Pub Series

NIST Interagency/Internal Report (NISTIR)

Pub Type

NIST Pubs

Keywords

characterization, coatings, interface/interphase, modeling, polymeric material, workshop

Citation

Nguyen, T. , Han, C. , Cavanagh, R. and Ryntz, R. (1999), Report from the 2nd Workshop on: Characterization and Modeling of the Interface/Interphase of Polymeric Materials and Systems December 7 and 8, 1998, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD (Accessed April 25, 2024)