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.
The SPE Library is just one of the great benefits of being an SPE member! Are you taking advantage of all of your SPE Benefits?
Not an SPE member? Join today!
| = Members Only |
|
Categories
|
Recycling
Various topics related to sustainability in plastics, including bio-related, environmental issues, green, recycling, renewal, re-use and sustainability.
Polytetrafluoroethylene as a suitable filler for poly(lactic acid) composites
The mechanical, rheological, and foaming properties of melt-blended samples were investigated.
SPE Bioplastic and Renewable Technologies Division December 2016 Newsletter
Read the latest issue of the SPE Bioplastic and Renewable Technologies Division newsletter.
Effects of temperature on the relaxation behavior of poly(lactic acid)
A series of tensile loading-unloading and relaxation tests, under stretching and retraction cyclic deformation conditions, were conducted between room temperature and 50°C.
High-solid-loading ionic-liquid pretreatment of lignocellulosic particles for biocomposites
A novel and environmentally friendly pretreatment approach is used for the production of cellulose-rich fibers as reinforcements for thermoplastic-starch-based bioplastics.
Effect of molding conditions on properties of injection-molded polylactic acid parts
A post-molding stage, in which samples are kept at 105°C, is used to produce semi-crystalline samples in much shorter times than through standard injection into a hot mold.
Recycling paper waste sludge in water-blown rigid polyurethane foams
Thermal conductivity and mechanical strength measurements indicate that paper waste sludge particles can be used effectively as fillers in eco-polyol-based foams.
Reinforcing thermoplastic starch composites with cellulose nanofibers
Cellulose from sugarcane bagasse can be used to improve the mechanical and barrier properties of bionanocomposites.
Interfacial nanoreinforcement improves bamboo fiber/polymer composites
A fully biobased composite material, composed of bamboo fibers and a nanoparticle-reinforced bio-epoxy matrix, exhibits improved mechanical properties.
High-performance polylactide biocomposites reinforced with cellulose nanofibers
Rheological, optical, mechanical, and thermomechanical investigation of the properties of cellulose-nanofiber-reinforced polylactide demonstrates the solution method for achieving good fiber dispersion.
Polylactic acid biocomposite filaments with improved mechanical properties
Fully biodegradable polylactic acid/microcrystalline cellulose composites, with surface-modified reinforcing cellulose, are suitable for 3D printing applications.
Biodegradable biocomposites with antimicrobial properties for food packaging
A novel ternary composite comprising a biopolymer, natural fibers, and an essential oil extract is a promising active material for extending the shelf-life of food products.
Frictional heating of extruded polymer melts
Rheo-particle image velocimetry and thermal imaging results show that frictional and viscous heating act synergistically to produce significant temperature increases when a melt is extruded under slip conditions.
Biocompatible reinforcement of poly(lactic acid) with graphene nanoplatelets
Improved mechanical properties of composites produced by melt blending is achieved at low filler loadings.
Fabrication of self-reinforced cellulose composites
Cellulose fibers from agricultural waste are used to prepare composites with improved mechanical properties.
De-inking paper sludge as a potential reinforcement for recycled plastics
The addition of de-inking paper sludge into recycled high-density polyethylene composites improves their tensile strength and stiffness, but is detrimental to their ductility and toughness.
A Study on the Mechanical Properties of Recycling PC/ABS Blends Produced by Vent-Type Injection Molding
The mechanical properties of recycling PC/ABS blends produced by three kinds of molding conditions were discussed, including such parameters such as the cylinder temperature and the type of injection molding processes. Mechanical properties and the degradation rate with the increase of recycling times were investigated. The comparison of different cylinder temperature produced by vent-type injection molding was conducted, also the research between cent-type injection molding and non-vent-type injection molding, based on the detailed SEM observation on the fracture surfaces after Izod impact test. It can be found that, with the increase of recycling times, the material produced by vent-type injection molding machine demonstrated higher mechanical properties and lower degradation rate in mechanical properties than non-vent-type injection molding machine.
Advances in Adhesive Technology for Bonding Liquid Silicone Rubbers to Plastics and Metals
LORD Corporation offers new adhesive solutions that effectively bond platinum-cured liquid silicone rubber (LSR) to various substrates directly in an injection or compression molding process. This technology does not require plasma treatment or other complicated and costly surface preparation steps. In this study, three new adhesive systems were tested to bond LSR to various substrates, including polycarbonate, thermoplastic elastomer, polyamide, and stainless steel. Parts were molded and peel tested. This process and product technology offers a number of benefits compared to existing technology, including enhanced design freedom, more robust processing, less surface preparation requirements, and environmental friendliness.
An Effective Way of Processing Immiscible PP/PS Blends into High Strength Fiber
A new method for processing high strength fiber from immiscible PP/PS blends was developed. In contrast to conventional melt spinning with high jet stretch, the new method adopts a low jet stretch ratio and a subsequent hot drawing step above the Tg of PS for making a blend fiber with a highly oriented PP phase. Initial results demonstrated that 70/30 PP/PS blend fibers processed by zero jet stretch and 8X hot drawing at 100°C can achieve a tensile strength above 300 MPa, 6 times higher than that of corresponding blend fibers produced by conventional high jet stretch. This process also provides a new route for recycling immiscible polymer waste mixtures and may have a high potential for industrial applications. By making immiscible polymer blends recyclable, this method can lead to improved design flexibility for system integration and achieving multi-functional products.
Analysis on Mechanical Properties of Poly-lactic Acid Composites with Organic-Montmorillonite by Injection Molding
Biodegradable material enacts as an important role on reducing impacts in environment problem. This paper investigated the mechanical properties of Poly-lactic Acid (PLA) and PLA/nanocomposites by variant parameters of injection molding process. Effects on tensile strength between molecular orientation and density have been tested and discussed. The micron clay composites, organic-montmorillonite (OMMT) is used for filler materials in this study, and coupling agent, such as silane has been adopted to enhance polymer branches to catch OMMT and then improved both materials bonding. Effects on mechanical properties by different mixing ratio of pure PLA, PLA/M (PLA with OMMT) and PLA/S/M (PLA with silane and OMMT) clay composites have been prepared and the most significant factor for mechanical properties in tensile and impact strength with injection molding parameters have been obtained. The thermogravimetric analyzer (TGA) and differential scanning calorimetry (DSC) have also been used to measure the thermal properties of such PLA and PLA clay composites. Results show that the tensile properties of PLA/S/M are superior to that of PLA/M and the PLA/S/M4 of 4wt% OMMT has the largest tensile strength as 84.85MPa as increases approximately 8.0% higher than that of pure PLA specimen. However, the impact strength of PLA/M is superior to that of PLA/S/M. The PLA/M4 has the best impact strength as 0.625J/cm2 as increasing 54.3% higher than that of pure PLA specimen. Results of this study can be applied to future applications of in-vivo medical assistive device or fixed scaffold products by injection molding processes.
Application of Air Gap to Enhance Acoustic Performance of Biobased PLA Foams
There is an increasing need for lightweight, biodegradable and efficient sound absorbers in various industries. Polylactic acid (PLA) open cell foams have been previously identified as an effective sound absorber. This study investigates the integration of air gap to enhance acoustic performance of PLA foams. PLA foams of two different cell sizes were characterized and tested for the frequency range of 800-6300 Hz. It was identified that increasing the gap caused an increase in maximum absorption and a shift in peak frequency to lower values. The data recorded will allow for determination of parameters such as pore size and air gap for acoustic solutions in the industry.
|
This item is only available to members
Click here to log in
If you are not currently a member,
you can click here to fill out a member
application.
We're sorry, but your current web site security status does not grant you access to the resource you are attempting to view.
.jpg)
.jpg)
.jpg)
.jpg)
