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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Various topics related to sustainability in plastics, including bio-related, environmental issues, green, recycling, renewal, re-use and sustainability.
Synergistic effects on nonisothermal poly(lactic acid) crystallization
The combination of plasticizers and nucleating agents accelerates the crystallization rate of poly(lactic acid).
Bioplastics and global sustainability
Application of bioplastics is in its infancy stage but holds significant promise in developing sustainable plastics for the future.
Oil-palm fiber as natural reinforcement for polymer composites
The importance of natural fibers as reinforcement or fillers in polymers is increasing, but limitations have prevented them from totally replacing synthetic fibers.
Freeze-thawed hydrogels for modeling blood vessels
Artificial materials that match both the physical dimensions and mechanical properties of biological blood vessels could be useful in biomedical simulation experiments.
A unique, high-flow, drapable, soft reprocessable material
A new pelletizable, reprocessable composition can be converted into a nonwoven material or a fabric suitable for spin bonding.
Visco-elastic properties of modified poly(lactic acid)/ spruce-wood-flour composites
Composite mechanical behavior is critically influenced by interfacial compatibility between the filler and polymer matrix.
Recycled polyvinyl chloride as a sustainable solution
An improved extrusion technique for polyvinyl chloride regrind could be useful to manufacturers, builders, and architects.
Polymer blends with improved mechanical properties
Hydrolytic degradation and elongation properties of polylactic acid can be enhanced by blending with polyhydroxybutyrate.
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.
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.
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.
Processing and characterization of recycled poly(ethylene terephthalate) blends
Chain extenders blended with recycled poly(ethylene terephthalate) improve mechanical properties and moldability.
Freeze-drying improves crystallization of biodegradable polymers
Poly(L-lactide) prepared by freeze-drying exhibits higher crystallizability than the bulk polymer.
Tissue engineering scaffolds formed by pseudo-negative voltage electrospinning
An emerging electrospinning technique enables the fabrication of multilayered fibrous membranes with high fiber density and reliable fiber alignment.
Nanocomposites improve performance of biodegradable polymers
Nanocomposites based on polycaprolactone exhibit enhanced tensile properties and controlled biodegradation rates.
A GREEN PROCESS FOR THE SYNTHESIS OF MESOPOROUS SILICA MATERIALS
In this paper, mesoporous silica and functionalized silicas were prepared by a green template, polyamidoamine (PAMAM) dendrimers. Three silane coupling agents, 3-triethoxysilylpropyl- amine (APTES), -methylacryloyl oxypropyl trimethoxysilane (MAPTMS) and N-[3-(trimethoxysilyl)propyl]ethylenediamine (AEAPTMS) were used for modification on pore surface. The characters of synthesized silicas were investigated in detail. The results showed that controllable pore diameters, narrow pore size distributions, high surface area and pore volume were achieved. The PAMAM template can be feasibly removed by using water extraction.
A NOVEL POLY (LACTIC ACID) BASED WATERBORNE POLYURETHANE
In the past few decades, Bio-plastics of plant origin and biodegradable plastics, and emulsions containing no organic solvent have drawn growing attentions as general environmentally friendly materials. Poly (lactic acid) based polyurethanes self-emulsified in 100% water were synthesized. The particle sizes of some of the emulsions were fine (less than 100nm) and they were stable for 6 months under 5oC storage condition. The low Tg sample showed good biodegradability. In this report, result of the polymerization and the emulsification, and the characteristic of the obtained emulsions were described.
A STATISTICAL STUDY OF THE COMPATIBILITY AND CURING OF DEVULCANIZED RUBBER AND POLYPROPYLENE
The usage of waste tire rubber crumb as a dispersed phase in a thermoplastic matrix has been a topic of study for a long time. Inspite of using compatibilizers the properties achieved using polypropylene (PP) and waste ground rubber tire (GRT) crumb composites remained inferior. Devulcanized rubber (DR) being more relatively similar to virgin rubber is supposed to perform better than GRT and hence should be a better material for commercializing. This paper presents a statistical analysis of compatibility between DR and PP and also studies the effectiveness of a sulphur cure system in compatibilization.
BIMODAL POLYSTYRENE/PARTICLE FOAM BY EXTRUSION FOAMING
Extrusion foaming using supercritical carbon dioxide (CO2) as the blowing agent is an economically and environmentally benign process. However, it is difficult to control the foam density and maintain the thermal insulation performance. In this study, the extrusion foaming process of bimodal polystyrene foams was investigated by using CO2 as the blowing agent and water as the co-blowing agent. Compared to the extruded foam without water as co-blowing agent, the bimodal foams exhibit better thermal insulation property and compressive performance.
BIODEGRADATION OF POLY (HYDROXY BUTANOIC ACID) COPOLYMERS
Biodegradable plastics have attracted much attention in the last decade, not only because they can divert waste from landfill, but also because the biodegradable functionality meets the requirement of many applications. Poly (hydroxy butanoic acid) or PHB copolymers is one such class of plastics. This paper will review the biodegradability of these polymers in various environments including soil, fresh water, seawater, compost and anaerobic digesters. Testing methods and variables influencing biodegradation will also be discussed.
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