SPE Library
The SPE Library contains thousands of papers, presentations, journal briefs and recorded webinars from the best minds in the Plastics Industry. Spanning almost two decades, this collection of published research and development work in polymer science and plastics technology is a wealth of knowledge and information for anyone involved in plastics.
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Technical Article Briefs
Freeze-drying improves crystallization of biodegradable polymers
Poly(L-lactide) prepared by freeze-drying exhibits higher crystallizability than the bulk polymer.
Processing and characterization of recycled poly(ethylene terephthalate) blends
Chain extenders blended with recycled poly(ethylene terephthalate) improve mechanical properties and moldability.
Biodegradable polymers based on starch and poly(lactic acid)
Pre-process drying is an inexpensive and environmentally friendly way to enhance adhesion between fillers and polymers.
Environmentally friendly polymer composites prepared with cellulose nanocrystals
Novel polyurethanes obtained from vegetable oil exhibit appreciably improved mechanical performance with inclusion of just 0.5% by weight of nanosized cellulose crystals.
Nanocomposites of new biodegradable polyesters and polyesteramides
Polymers are easily prepared by bulk polycondensation based on metal-halide salt formation, while crystallization is strongly influenced by incorporation and distribution of silicate nanoparticles.
Continuous twisted yarn from well-aligned nanofibers by a water vortex
Different yarn counts with various twists are feasible with a new technique.
Preparation of vinyl alcohol groups containing polymer nanocomposites
Materials prepared by solvent casting and precipitation, combined with chemical processes involving fatty acid derivatives, have significant potential for industrial applications.
Free radicals in thermal dehydrochlorination of poly(vinyl chloride)
Kinetic analysis disproves operation of two mechanisms that involve free radicals, but autoacceleration begins with reactions of radicals formed in situ.
Critical filler concentration for electroconductive polymer composites
Initial studies have been performed on how optimal electrical properties depend on percolation thresholds.
An improved approach to simulating resin-transfer molding
Implementation of the conventional control-volume/finite-element method and a modified conjugate-gradient algorithm can efficiently optimize rheological simulations.
The creep behavior of linear low-density polyethylene
Research reveals that the creep strain of films is higher at lower densities, specifically between 0.902 to 0.930g/cm!sup!3!/sup!.
Modeling intermeshing, counterrotating twin-screw extrusion
Effects of screw-flight thickness, channel depth, and non-Newtonian flow can be predicted and experimentally verified by considering screw-flight shearing.
Thermally insensitive hydrosoluble associative polymers
The rheological properties of a new type of water-soluble compound do not depend on temperature.
Measuring post-extrusion stretching force in polymer melts
The stretching force of polymer melts depends on the draw ratio and freeze-line position.
Thermal stresses and birefringence in quenched cylinders
During quenching from melt to solid state, the contribution of thermal stresses to birefringence is minimal for polystyrenes and significant for polycarbonates.
Cross-linked polypropylene formation through silane-based moisture curing
Polypropylene crosslinking with alkylsilanes and co-agents through free-radical modification enables generation of significant gel content.
Clay-induced visco-elastic response of reactive nanocomposites
Nanofillers in reactive blendsâ€â€which are compatibilized through interchange/exchange reactionsâ€â€have opposing effects on the visco-elastic response of nanocomposites.
Processing effects on nanoclay/ polymer-blend morphology and rheology
Polyethylene/polyamide and polyamide/clay contact times critically impact clay-nanoparticle composition, polymer dispersed-phase morphology, and ternary-clay-blend rheological properties.
Morphological and structural aspects of polymer nanocomposites
Filler distribution and the role of the interphase are important aspects that determine the morphology of polymer nanocomposites.
Polyethylene degradation: effect of polymerization catalyst
Metallocene catalysis yields a polyethylene resin of superior chemical stability during melt processing.
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