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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Recycling
Using ZeMac? Copolymers To Reduce Costs in Nylon Compounds While Meeting Exacting Customer Performance Specifications
Ashok M. Adur, Prasad Taranekar, May 2015
Nylon is widely used in many applications. At the 2013 ANTEC in Cincinnati, our paper covered the results obtained with compounding primarily recycled nylon with the addition of small quantities of alternating ethylene and maleic anhydride ZeMac? copolymers and specific property improvements for applications in injection molded compounds. The resulting compounds have performance that can match or exceed prime virgin nylon at 30-50% cost savings. At the 2014 ANTEC in Las Vegas, our paper covered the performance enhancements to provide several advantages for upgrading virgin nylon such as increasing relative viscosity for improved melt strength and the unique improvements obtained in impact-modified nylon-6 and nylon-6,6 by reducing the negative impact of traditional impact modifiers by offering synergistic set of properties. This current paper will cover how using the unique chemistry of these copolymer products can reduce costs in nylon compounds and still meet performance specifications.
When Permanent Really Means Permanent. Polyfuze, the New Heat Fused Graphic for Polyethylene, Polypropylene and Other Olefin Resins
Jason Brownell, May 2015
The intent of this paper is to demonstrate the truly permanent nature of a new patent protected heat fusion process for the transfer of graphics to polyethylene, polypropylene and other olefin products. As stated in Wikipedia, ?Heat fusion (sometimes called heat welding or simply fusion) is a welding process used to join two different pieces of a thermoplastic. This process involves heating both pieces simultaneously and pressing them together. The two pieces then cool together and form a permanent bond. When done properly, the two pieces become indistinguishable from each other. Dissimilar plastics can result in improper bonding.?
This paper will:
Explain the difference between the new Polyfuze Graphic and other labeling processes such as In-Mold Labels (IML), Hot Stamp (Foil), Screen/Pad Printing and adhesive backed stickers.
Define the environmental significance of each of these decorating methods vs. heat fused graphics.
X-Ray Nanotomography of the Skin-Core Structure of Injection Molded Composites
Sudheer Bandla, Jay C. Hanan, May 2015
Microstructure development during polymer processing is of interest for manufacturers in engineering the final properties. Injection molding advancements have facilitated molding components with complex geometries. With industry moving towards minimizing the polymer waste while retaining the component properties, it is necessary to understand the microstructure formation in detail. Progresses in the field of X-ray imaging techniques have made it possible to characterize polymers with sub-micron resolution. In the current work, we show the applicability of X-ray nanotomography in quantifying the skin-core morphology resulting from injection molding.
Tunable drug delivery from a smart rubber composite
Melodie I. Lawton, Patrick T. Mather, April 2015
A strong, elastic synthetic biomaterial that mimics soft tissues remembers shapes and provides controlled release of a model drug.
Biodegradable porous structures derived from multiphase polymer blends
Costas Panayiotou, Ioannis Zuburtikudis , Apostolos Baklavaridis, January 2015
Reinforcing multiphase porous biopolymer composites with clay platelets increases their mechanical strength, making them a promising candidate for future tissue engineering applications.
3D printing biocomposites
Branden Lewandowski, Steven Ott, Louis Reifschneider, Victoria Finkenstadt, Zengshe Liu, Brent Tisserat, January 2015
Poor interfacial binding reduces the mechanical properties of 3D printed tensile bars prepared from filaments of blends of biomaterials with polylactic acid.
Autoclaved aerated concrete waste composites as a filler for natural rubber
Garry L. Rempel, Wanvimon Arayapranee, December 2014
Filling natural rubber with autoclaved aerated concrete waste enhances the processability and tensile and thermal properties of the composites.
Feather-inspired strong, light layered composites
Charalabos Doumanidis, James Seferis , Vasileios Drakonakis, December 2014
Layered carbon-fiber-reinforced composites with a fractal-structured interlayer of carbon-nanotube-reinforced nanofibers show a high strength/weight ratio.
Electrically conductive nanocomposite
Rachid Bouhfid, Abouelkacem Qaiss, November 2014
Adding graphene nanosheets to polymer blend polyamide 6/acrylonitrile butadiene styrene blends leads to electrically conductive nanocomposite materials at smaller threshold percolation.
Green composites based on poly(butylene) succinate
Zoi Terzopoulou, Dimitrios Bikiaris, November 2014
Reinforcing poly(butylene succinate) with hemp fibers and shives enhances the biodegradation rate.
Choice of extrusion screw for recycling glass-fiber-reinforced liquid crystal polymer
Shuidong Zhang, November 2014
A smaller extrusion screw produces a recycled product with adequate mechanical and thermal properties for reuse in electronic and electrical applications.
Upcycling leather waste
Aldo Eloizo Job, Eduardo Roque Budemberg, Renivaldo Jose dos Santos , Flavio Camargo Cabrera , Deuber Lincon da Silva Agostini, October 2014
Incorporating contaminated leather waste into natural rubber improves the rubber's mechanical properties and avoids improper disposal of toxins.
New biodegradable composites for food packaging
Antonio A. Vicente, Ricardo Pereira, Loïc Hilliou , Marie-Alix Berthet, Jose A. Covas , Mara Cunha, September 2014
Beer spent grain fibers are a biodegradable waste resource that forms breathable thin films by conventional extrusion film blowing under processing conditions scalable to industrial production.
Green technology for modification of poly(vinyl chloride)
Yelena Kann, September 2014
Biodegradable poly(hydroxybutyrate) copolymers plasticize, toughen, improve processing, and reduce UV discoloration.
Biopolyesters filled with date seed powder
Vikas Mittal , Nadejda Matsko, September 2014
Using date seed powder to reinforce the biodegradable polyesters poly-L-lactide and poly(butylene adipate-co-terephthalate) improves their properties.
Post-industrial waste nylon for automotive applications
David DuQuesnay , Ying Zhang, Philip Bates, August 2014
Although slightly lower in tensile and fatigue strength, glass-fiber-reinforced waste nylon can be a viable substitute for reinforced prime nylon in cyclically loaded under-hood automotive applications.
Enhancing properties and value of recycled plastics
Ramazan Asmatulu, August 2014
Adding graphene nanoflakes to recycled high-density polyethylene drastically improves its performance.
Bioplasticized poly(vinyl chloride)
Bharat Chaudhary, August 2014
Treatment with epoxidized soybean oil and bis(2-ethylhexyl) succinate for wire and cable applications softens the polymer but preserves tensile elongation properties after heat aging.
Enhanced cold crystallization of glassy poly(L-lactic acid)
Changyu Shen, Yaming Wang, Qian Li, Chunguang Shao, June 2014
Glassy PLA samples prepared by rapid compression possess lower onset crystallization temperature, higher crystallization rate, and larger final crystallinity than samples prepared by other methods.
Antibiotic wound dressings
Sheeja Rajiv , Sabitha Mahadevan, June 2014
Incorporating ampicillin into electrospun polyurethane makes bandages that control common infections.
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