Plastics Engineering Blog | The monthly blog for Plastics Engineering magazine | Page 3 By Jan H. Schut When Coca Cola Co. Skeptics also noted that the bottles didn’t say “30% bio content” or “at least 30% bio content,” normal wording for post consumer recycled content. In fact, Coke had put an elaborate multi-national bio monomer supply chain in place, capable of meeting rapidly escalating demand for bio-content PET. To reach 30% bio content requires bio MEG, for which Coke bought bio ethanol in Brazil, shipped the bio ethanol to India, and had it made into bio MEG, which was then made into 30% bio content PET. The beauty of Coca Cola’s route is that it used bio ethanol available on the Brazilian market, an existing producer of bio MEG, and existing reactors and infrastructure to make the PET, so supply could be ramped up fairly quickly. Coke put a complex international supply chain in place to make 30% bio PET bottles. By late 2010 Coke said it had distributed 2.5 billion “PlantBottles.” Brazilian bio ethanol is derived from fermenting sugar cane juice.
Shapeways Inspired by Mendel Heit, Martin Bauer and Jay Cousins we've been doing a lot of playing around with bioplastics. Here you can see the original post with a video that shows you how they made bioplastic. Additionally this video is quite helpful. So why have I been spending every minute of my free time cooking bioplastic? Theoretically home made bioplastics could be of great benefit to hobbyists and hardware hackers. Livernon. Un broyeur à pédales pour faire du BRF - Lot Jacky Dupéty a découvert le bois raméal fragmenté (BRF) lors de la canicule de 2003, en recherchant une technique biologique permettant des économies d'eau dans son potager. Après s'être procuré des études agronomiques québécoises et belges, mises en application sur le causse, Jacky a constaté que le BRF n'était pas un banal paillage, mais une technique permettant un enrichissement naturel du sol, évitant également des traitements phytosanitaires. Il y a cinq ans, Jacky Dupéty créait, avec quelques amis, l'association pour la valorisation et l'expérimentation du bois raméal fragmenté (BRF). Lors de son assemblée générale, cette association a élu son conseil d'administration et son bureau. Des sollicitations proviennent de l'étranger, d'Italie et d'Afrique, particulièrement du Mali, du Togo et du Burkina Faso. En partenariat avec l'école nationale d'ingénieurs de Tarbes, et une classe de BTS du lycée de Rodez, les plans 3D du broyeur sont terminés.
the free encyclopedia Invest in Graphene » SanDisk (NASDAQ:SNDK) » Page: 1 | Invest in Graphene Of all the companies investing in graphene research and product development at the moment SanDisk is perhaps the one to watch. Ranked second in the Top 20 of graphene patent applicants with the first application only made in 2006, SanDisk is only outclassed by the much bigger Samsung, a company whose 60 applications dwarf SanDisk’s mere 31. As a potential graphene stock investment SanDisk’s shares have nearly doubled in the last three months and shown a 500% increase in share price over the past three years. The second quarter of 2011 produced the best quarterly revenue in the company’s history at $1.375 billion. SanDisk is best known as a global market leader in flash memory storage devices, and for its commitments to research and development, product design and manufacturing, branding and distribution for OEM and retail channels. The company is currently working in partnership with Toshiba in a joint venture called Flash Forward Ltd, with Sandisk holding 49.9% of the company. Google+
Fun with Agar and a Faulty Roto Molding Experiment For this weeks experiment I wanted to keep exploring homemade bioplastics, and decided to do so with a new recipe using agar. Agar is a derivative of red algae and has some interesting uses, including being used as a culinary ingredient in Asian desserts and gelatins, or as medium in which to grow bacteria in microbiological work. I first used agar in the same recipe I've tested for my previous bioplastic experiments, using it as my starch. It was only after I started mixing these ingredients that I realized I was not following the prescribed recipe for agar bioplastic from green-plastics.net, and had to subsequently make an additional batch. The main differences between the two recipes were that the actual agar recipe did not use vinegar, called for less agar, used a 1% glycerol solution instead of straight glycerin, and used a lot more water as well. The results were pretty interesting. Foil and foam core geometric mold Foil and foam core geometric mold
Mix it Up ! Now that you have gathered all the necessary materials and ingredients, its time to mix up a batch of potato plastic. A note to younger viewers: be sure to have a parent with you when using the stove, I don't want you to burn down your house because of this instructable! Also, beware of the starch plastic resin when you are pouring it into a mold, it is very hot and will burn you if it gets on your skin, you can never be too cautious with boiling hot substances.
Graphène Un article de Wikipédia, l'encyclopédie libre. Ne doit pas être confondu avec graphème. Le graphène est un cristal bidimensionnel (monoplan) de carbone dont l'empilement constitue le graphite. Il a été isolé en 2004 par Andre Geim, du département de physique de l'université de Manchester, qui a reçu pour cette découverte le prix Nobel de physique en 2010 avec Konstantin Novoselov. Histoire[modifier | modifier le code] Le graphène a été identifié pour la première fois en 2004 par l'équipe d'Andre Geim à l'université de Manchester en Angleterre. Production[modifier | modifier le code] Représentation graphique du graphène. Le graphène se trouve à l'état naturel dans les cristaux de graphite, où il se présente sous la forme d'un empilement de feuilles. Graphène exfolié[modifier | modifier le code] Graphène épitaxié[modifier | modifier le code] Il s'agit de produire du graphène à partir de carbure de silicium. Graphène produit par CVD[modifier | modifier le code] Le graphène est conducteur.
moulages Principes de base des moulages. Je ne suis pas spécialiste en moulages, j'ai seulement acquis une expérience limitée dans ce domaine en fonction de mes lectures et de mes propres applications. Ce sont ces connaissances que je vous propose. A- Réalisation des moules : Que mouler et avec quoi ? Tout peut être reproduit par moulage : une pièce rigide, souple, de forme simple ou complexe, de petite ou grande taille. Il existe une grande variété de produit destinés à prendre l'empreinte de l'objet à mouler : plâtre, latex, silicone, alginate, ... Le choix sera guidé par le type d'objet à reproduire, mais aussi par les caractéristiques de la matière pour la prise d'empreinte. La silicone, appliquée sous forme liquide ou pâteuse, offre beaucoup d'avantages. Son coût limite cependant son utilisation à des objets de taille petite à moyenne.
Polylactic acid Poly(lactic acid) or polylactide (PLA) is a thermoplastic aliphatic polyester derived from renewable resources, such as corn starch (in the United States), tapioca roots, chips or starch (mostly in Asia), or sugarcane (in the rest of the world). In 2010, PLA had the second highest consumption volume of any bioplastic of the world.[3] The name "poly(lactic acid)" does not comply with IUPAC standard nomenclature, and is potentially ambiguous or confusing, because PLA is not a polyacid (polyelectrolyte), but rather a polyester.[4] Production[edit] There are several industrial routes to usable (i.e. high molecular weight) PLA. Two main monomers are used: lactic acid, and the cyclic di-ester, lactide. Another route to PLA is the direct condensation of lactic acid monomers. Polymerization of a racemic mixture of L- and D-lactides usually leads to the synthesis of poly-DL-lactide (PDLLA), which is amorphous. Manufacturers[edit] Chemical and physical properties[edit] Applications[edit]
BIOPLASTIC: HARDENED FOAM (Ruben) | deylab With this experiment I tried to make a hardened piece of foam using corn starch and gelatine. I put 700 ml of hot water in a bowl and added four leaves of gelatine. I also addead 4 tablespoons of cornstarch. 700 ml of hot water 4 leaves of gelatine 4 tablespoons of cornstarch Mix for 5 min. using an electrical mixer. Scoop up the foam and freeze dry it for half a day And last but not least let it harden in a warm dry place for 2 days Above: Bio foam Like this: Like Loading... Student's Corner download PDF (The characters Achilles and the Tortoise are taken from Douglas Hofstadter's Goedel, Escher, Back: an Eternal Golden Braid.) Achilles (a Greek warrior, fleetest of foot of all mortals) comes across a Tortoise in a forest. The Tortoise is smashing a plastic box with a hammer. Achilles: Good afternoon, Tortoise. Tortoise: I am finished with this plastic packaging, so I am returning it to the earth. Achilles: But all you are doing is hitting it with a hammer. Tortoise: Actually, if you must know, I am degrading it. Achilles: Degrading it? Tortoise: No, no. Achilles: Yes… Tortoise: Well, biodegrading is just one kind of degrading, you know. Achilles: Now wait, but that's hardly the same thing. Tortoise: Why? Achilles: You'll never do it with a hammer. Tortoise: Well, I could use a grinder of some sort. Achilles: That wouldn't… look. Tortoise: Aha, well now I've got you! Achilles: Something you can add now? Tortoise: No, no. Achilles: OK. Tortoise: No! Achilles: Oxydolic-degradation?