Personal & Home Care, Food & Agriculture – Page 19

Electrochemical Impedance and Thermal Characterization of Nano-Reinforced Vinyl Chloride/Vinyl Acetate Coating

Calhoun M., Ludwick A., Aglan H., Tuskegee University, US

A poly(vinyl chloride/vinyl acetate) copolymer (VYHH) with and without multi walled carbon nanotubes (MWCNTs) as reinforcements was used as a coating for steel substrates in order to evaluate its barrier properties against corrosion. Electrical impedance [...]

Structure Development in Flexible Polyurethane Foam Nanocomposites

Stanford J.L., Cookson P.A., Fithriyah N.H., Wilkinson A.N., University of Manchester, UK

This research involves in situ studies on the development of molecular and morphological structures during the processing of flexible, water-blown polyurethane foams containing layered silicate (montmorillonite) nanoparticles. Such materials possess enhanced mechanical properties combined with [...]

Characterization of new type polymer composites prepared by in situ coffining electrospun fibers into polymer matrixes

Tsutsumi H., Hara C., Yamaguchi University, JP

A number of methods are available for preparing a fiber reinforced polymer composite from two or more polymer matrixes and fibers. Many difficulties (for example, increasing viscosity of processing fluid, homogeneity of fibers in the [...]

Overview of Polymer Nanocomposites as Dielectrics and Electrical Insulation Materials for Large High Voltage Rotating Machines

Han J., Garrett R., Siemens Power Generation, US

Polymer nanocomposites are defined as polymers in which small amounts of nanometer size filers are homogeneously dispersed. In power industry, electrical insulating polymers usually incorporate inorganic fillers to achieve specific electrical, mechanical, thermal properties and [...]

Universal platform for preparation of functional block copolymers

McCarthy P., Tsarevsky N.V., Jakubowski W., Spanwick J., Matyjaszewski K., ATRP Solutions, Inc., US

Block copolymers with hydrophilic and hydrophobic segments can assemble to generate a variety of nano-scale structures. Additionally, block copolymers have tremendous potential to improve the performance of commercial products in pharmaceuticals, cosmetics, adhesives and detergents [...]

High-density polyethylene reinforced with titania nanoparticles

Bondioli F., Dorigato A., Fabbri P., Ferrari A.M., Messori M., Pegoretti A., Università di Modena e Reggio Emilia, IT

Titania nanoparticles were prepared by both hydrolysis of tetraethoxy titanium, in order to obtain a spherical shape, and by hydrothermal crystallisation. Nanoparticles were also surface modified with alkylsilanes in order to improve the compatibility with [...]

Novel organic-inorganic nanohybrids based on poly(N,N-dimethyl acrylamide)-l-polyisobutylene amphiphilic polymer conetworks

Mezey P., Domján A., Iván B., Thomann R., Mülhaupt R., Hungarian Academy of Sciences, HU

Poly(N,N-dimethyl acrylamide)-l-polyisobutylene (PDMAAm-l-PIB) amphiphilic conetworks were synthesized. Thermal analysis (DSC), small angle X-ray scattering (SAXS) measurements and atomic force microscopy (AFM) investigations were made. Furthermore, we have successfully synthesized silver nanoparticles in the PDMAAm-l-PIB amphiphilic [...]

The effect of polymerization rate on the formation of polyaniline nanofibers

Huang Y-F, Lin C-W, National Yunlin University of Science and Technology, TW

This study reports the synthesis of polyaniline (PANI) nanofibers with an average diameter of 30~50 nm using HCl as a dopant. Experiments controlled the polymerization rate in terms of temperature and oxidant concentration. Transmission electron [...]

Multifunctional magnetic hydrogels with polyethylene glycol-derivative colloidal nanospheres for drug delivery and hyperthermia applications

Ghosh S., GhoshMitra S., Cai T., GhoshMitra S., Neogi A., Hu Z., Mills N., Southeast Missouri State University, US

Magnetically responsive thermo-active hydrogels offer several potential advantages over other bio-material systems for the controlled release of drugs and targeted thermal therapy of the cancerous cells. Thermal and magnetic responses of hydrogels can be tuned [...]

Characterization of Cellulose Nanocrystals by SPM

Lahiji R.R., Reifenberger R., Moon R.J., Rudie A., Purdue University, US

Cellulose is the world’s most abundant biopolymer and is present in virtually all plants. Its main function is to act as a reinforcement material. Cellulose is a linear chain of ringed glucose monomers ((C6H10O5)n; n=10 [...]