Polymer Engineering and Science articles from November 2005

Polymer Engineering and Science archives from November 2005

The preparation and properties of compatibilized nylon 6/ABS blends using functionalized polybutadiene. Part I: impact properties.
November 1, 2005... INTRODUCTION Polymer composites featuring both stiffness and strength have been of great commercial interest in the past decade. In particular, nanocomposites formed through a hybrid of organic and inorganic materials dispersed in a nano...

Accuracy and mechanical properties of multiparts produced in one mold in microinjection molding.
November 1, 2005... INTRODUCTION The development of microsystem technology on a vast scale is dependent on manufacturing systems that can reliably and economically produce microcomponents. The microinjection molding process, which permits cost-effective mass...

Effects of titanate coupling agent on the properties of mica-reinforced nylon-6 composites.
November 1, 2005... INTRODUCTION Inorganic fillers (CaC[O.sub.3], flyash, talc, mica, etc.) are widely used in polymer composites to improve various physical properties of the materials, such as mechanical strength and modulus, rigidity, and heat resistance....

Rheological and mechanical behavior of blends of styrene-butadiene rubber with polypropylene.
November 1, 2005... INTRODUCTION There is currently a lot of interest in "soft touch" materials--materials that are overmolded on hard or stiff structural forms to give a soft, comfortable, often textured, grip or surface for hand tools, domestic appliances,...

Investigation of modified SEBS-based thermoplastic elastomers by temperature scanning stress relaxation measurements.(styrene-b-ethylene/butylene-b-styrene)
November 1, 2005... INTRODUCTION The commercial uses for thermoplastic elastomer compounds (TPEs) based on block copolymers are growing rapidly. Compared with conventional rubber elastomers, these materials can be more easily processed and more easily...

Synthesis and characterization of PBMA-b-PSt-b-PBMA triblock copolymers by atom transfer radical emulsion polymerization.
November 1, 2005... INTRODUCTION The synthesis of polymers that have well-defined structure (e.g., predictable molecular weight and low polydispersity) and functionality using radical intermediates has been an area of intense interest in recent years [1, 2]....

Synthesis and adsorption properties of macroporous cross-linked polystyrene that contains an immobilizing 2,5-dimercapto-1,3,4-thiodiazole with tetraethylene glycol spacers.
November 1, 2005... INTRODUCTION It is well known that mercury is an occurring toxic metal in natural ecosystems. It is commonly used in a wide variety of industries such as electrical, paints, fungicides, chloralkali, paper and pulp, and pharmaceuticals. Out...

Temperature effect on mechanical properties of toughened silicone resins.
November 1, 2005... INTRODUCTION The question of mechanical property dependence on temperature has been brought up repeatedly when the toughened silicone resins are used for a range of applications, including structures in space. Those structures experience...

High-strength and low-stiffness composites of nanoclay-filled thermoplastic polyurethanes.
November 1, 2005... INTRODUCTION Polymers have been successfully reinforced by glass fibers and by other inorganic materials. In these reinforced composites the polymer and additives are seldom homogeneously dispersed to a nanometer scale, even if the...

Effect of shear on the electrical conductivity of suspensions of graphite in an unsaturated polyester resin.
November 1, 2005... INTRODUCTION Most polymers are poor conductors of electricity. One way of making them electrically conductive is to add conductive particles to the polymer matrix in large enough concentrations that the contact between the particles helps...

Kinetic studies of cationic photopolymerizations of cycloaliphatic epoxide, triethyleneglycol methyl vinyl ether, and cyclohexene oxide.
November 1, 2005... INTRODUCTION In contemporary engineering, cationic photopolymerization is becoming increasingly important because of its applicability to the computer controlled rapid-prototyping technique of stereolithography--hence, the relevance of...