The purpose of this study was to characterize the deformation properties of a range of long-term denture soft lining materials using dynamic mechanical thermal analysis. Specimens were subjected to sinusoidal shear deformation at a frequency of 1 Hz and a strain of 64 microns peak to peak over a temperature range of 30-70 degrees C. The technique simulated the type and rate of deformation soft ...

Stickiness of powder particles is often responsible for their impaired flow characteristics. Stickiness resulted from glass transition showing a relationship with mechanical -relaxations, and stickiness occurred differently in dairy solids modified in their lactose and protein contents. Glass transition, -relaxation and stickiness properties of milk solids systems were related to their solids c...

This paper investigates environmental aging effects on thermal and mechanical properties of three model electrically conductive adhesives (ECAs). A combination of several experimental techniques including thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and stress-strain dogbone testing has been utilized throughout this study. Samples...

We report the synthesis of a novel charge-transporting polymer based on the chargetransport unit N,N′-diphenyl-N,N′-bis(3-methylphenyl)-[1,1′-biphenyl]-4,4′-diamine (TPD). Introducing approximately 30 wt % of the liquid electro-optic molecule 4-(N,N-diethylamino)2-fluoro-(Z)-â-methyl-(E)-â-nitrostyrene (FDEAMNST) and small amounts of C60 makes this polymer photorefractive. A full photorefractiv...

Modern solid-state NMR techniques, combined with X-ray diffraction, revealed the molecular origin of the difference in mechanical properties of self-associated chitosan films. Films cast from acidic aqueous solutions were compared before and after neutralization, and the role of the counterion (acetate vs Cl(-)) was investigated. There is a competition between local structure and long-range ord...

Polylactic acid (polylactide) is the most widely used biodegradable polymer. To eliminate its brittleness and low flexibility, various approaches to plasticization are used, in particular, compounding with more flexible polymers. The possibilities of plasticizing polylactide polycaprolactone polybutylene adipate/terephthalate by mixing polymers a solution subsequent film formation have been stu...