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

Nobuaki Tabata, Takashi Sasaki , Daisuke Morino, March 2011

Poly(L-lactide) prepared by freeze-drying exhibits higher crystallizability than the bulk polymer.

Processing and characterization of recycled poly(ethylene terephthalate) blends

Yottha Srithep, Lih-Sheng Turng, March 2011

Chain extenders blended with recycled poly(ethylene terephthalate) improve mechanical properties and moldability.

Biodegradable polymers based on starch and poly(lactic acid)

Tamas Tabi, Jozsef Gabor Kovacs, March 2011

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

Vera Maria Wik, Mirta Ines Aranguren, Mirna Alejandra Mosiewicki, March 2011

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

Alfonso Rodriguez-Galan, Luis Javier del Valle, Jordi Puiggali , Maria Teresa Casas, Laura Morales-Gamez, Lourdes Franco, March 2011

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

Seeram Ramakrishna, Wee-Eong Teo, Mohammad Amani-Tehran, Maryam Yousefzadeh, Masoud Latifi, March 2011

Different yarn counts with various twists are feasible with a new technique.

Preparation of vinyl alcohol groups containing polymer nanocomposites

Jin-San Yoon, Eun-Ju Lee, Gwang-Tae Kim, Eun-Soo Park , Young Seob Jong, March 2011

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)

William H. Starnes Jr, March 2011

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

Abdel-Karim Maaroufi, Gabriel Pinto, March 2011

Initial studies have been performed on how optimal electrical properties depend on percolation thresholds.

An improved approach to simulating resin-transfer molding

Mohammed Hattabi, Aouatif Saad , Adil Echchelh, Mohammed El Ganaoui, March 2011

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

Arthur Bobovitch, Emmanuel Gutman, Dmytry Mogilansky, Yakov Unigovski, February 2011

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

James L. White, Jinhai Yang, Qibo Jiang, February 2011

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

Fatima Perez-Rodriguez, Ramon Diaz de Leon, Enrique Jimenez-Regalado, February 2011

The rheological properties of a new type of water-soluble compound do not depend on temperature.

Measuring post-extrusion stretching force in polymer melts

Eduardo Mendizabal, Jorge R. Robledo-Ortiz, Daniel E. Ramirez-Arreola, Ruben Gonzalez-Nunez, February 2011

The stretching force of polymer melts depends on the draw ratio and freeze-line position.

Thermal stresses and birefringence in quenched cylinders

Antonio J. Carillo, Avraam I. Isayev, February 2011

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

Jeffrey Cogen, Saurav Sengupta, Bharat Chaudhary, February 2011

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

Hossein Ali Khonakdar, Javad Seyfi, Seyed Hassan Jafari, February 2011

Nanofillers in reactive blends which are compatibilized through interchange/exchange reactions have opposing effects on the visco-elastic response of nanocomposites.

Processing effects on nanoclay/ polymer-blend morphology and rheology

Jacques Huitric, Michel Moan, Thierry Aubry, Julien Ville, Pascal Mederic, February 2011

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

Luis Antonio Sanchez de Almeida Prado, February 2011

Filler distribution and the role of the interphase are important aspects that determine the morphology of polymer nanocomposites.

Polyethylene degradation: effect of polymerization catalyst

Chris Liauw, Norman Allen, Karmele Sanchez, February 2011

Metallocene catalysis yields a polyethylene resin of superior chemical stability during melt processing.

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