Polymers: Technical activities, 1991. NAS-NRC Assessment Panel, February 13-14, 1992

Technical Report · Tue Oct 01 00:00:00 EDT 1991

OSTI ID:6067321

Smith, L E; Fanconi, B M

All of the Division's programs are described in the report, organized according to these six Groups. These Groups have made a number of significant accomplishments during the last year. Some of these are summarized below: A computer simulation was performed to model resin flow in liquid molding of the front end structure of a Ford Escort; A NIST/industry consortium has evolved for the purpose of developing in-line measurement technology based on optical and fluorescence methods; A combined light scattering photometer/rheometer has been constructed to examine phase separation behavior of polymer blends and solutions under the influence of a simple shear field; A unique new tool has been developed to study the physics involved in the adhesion between a polymer and a solid surface like glass; The distribution of polarization in poly(vinylidene fluoride) poled by corona discharge rather than by contacting electrodes indicated positive charge injection near the surface; Proton spin diffusion results indicated domain sizes in poly(butylmethacrylate)/hydroxy modified polystyrene blends with minimum dimensions in the 6-10 nm range and stoichiometries of the order of 75/25; Novel, siloxane-containing difunctional and multifunctional vinyl monomers were prepared; The apparent 'shift' in polymer blend phase separation temperature, Tc, under shear flow has been interpreted with the mode-coupling theory for mean-field polymer blend systems; The radial flow behavior was successfully predicted from measurements in unidirectional flow; An exposure technique that rapidly determines whether or not a polymer is biodegradable has been developed; Instrumentation has been set up and calibrated to measure the dielectric constant of thin polymer films at high electric fields; A viscoelastic model of stresses in porcelain-metal strips has been developed.

• Research Organization: National Inst. of Standards and Technology (MSEL), Gaithersburg, MD (United States)
• OSTI ID: 6067321
• Report Number(s): PB-92-116284/XAB; NISTIR-4696
• Resource Relation: Other Information: See also PB91-159715
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
29 ENERGY PLANNING
POLICY AND ECONOMY
POLYMERS
RESEARCH PROGRAMS
AUTOMOBILES
BIODEGRADATION
BONDING
COMPOSITE MATERIALS
COMPUTERIZED SIMULATION
CORONA DISCHARGES
MEDICAL SUPPLIES
ON-LINE MEASUREMENT SYSTEMS
PORCELAIN
RESINS
RHEOLOGY
SHEAR
STANDARDS
TECHNOLOGY ASSESSMENT
TECHNOLOGY TRANSFER
THIN FILMS
CHEMICAL REACTIONS
DECOMPOSITION
ELECTRIC DISCHARGES
FABRICATION
FILMS
JOINING
MATERIALS
ON-LINE SYSTEMS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
SIMULATION
VEHICLES
360600* - Other Materials
290500 - Energy Planning & Policy- Research
Development
Demonstration
& Commercialization