background preloader

Green Plastics: the new science of bioplastic

Green Plastics: the new science of bioplastic
Hi everyone. I guess I'll first introduce myself before I start. I'm Ferhat Avdić. I come from Bosnia and Hercegovina, a little country in South-east Europe. I'm an 18 years old student and I had the chance to participate on project olympiads so that's why I'm writing the article in first place. Now let's move on to stuff you will hopefully have use of.

http://green-plastics.net/

The monthly blog for Plastics Engineering magazine By Jan H. Schut When Coca Cola Co. 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? 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.

Bioplastique Un article de Wikipédia, l'encyclopédie libre. Le terme bioplastiques désigne des matériaux de deux types. Il s'agit d'une part de matières plastiques agrosourcés, ou agroplastiques, issus de ressources renouvelables, telles que le maïs, la patate douce, le blé, la canne à sucre ou l’huile de ricin, et d'autre part de plastiques biodégradables, y compris issus de réactions pétrochimiques. Certains matériaux présentent les deux caractéristiques, agrosourcés et biodégradables. Les agroplastiques ne sont pas forcément biodégradables au sens de la norme internationale.

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.

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.

Production mondiale de plastique La production mondiale de plastique La production de plastique dans le monde 245.000.000.000 kilos/ an 245 millions de tonnes de plastique avaient été produits dans le monde en 2008, contre 265 millions de tonnes en 2011 selon la Fédération des producteurs de plastique PlasticsEurope. Sur cette quantité 45 Mt de plastique ont été enfouies (2007) et seuls 5% du plastique utilisé dans le monde sont recyclés Les déchets industriels, et particulièrement les déchets plastiques, sont une véritable nuisance pour l’environnement avec 280 millions de tonnes de plastiques produits dans le monde en 2011

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 ? 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.

BIOPLASTIC: HARDENED FOAM (Ruben) 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. 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.

Related: