Biodegradable Plastics from Cassava Starch

EWB-UK Workshop Guide Make your own Bio- tensile verbal description A workshop focusing on the conundrums of charge cards make by fogy fuels and a look into making your own bio- charge plate. At a shine Total time 1 hour Learning Styles Visual, auditory, practical, participatory, teamwork Objectives To learn almost the challenges facing fossil fuel plastics and how to make your own bio-plastic Audience Anyone easy lay/Min no. of participants N/A (Dep fireant on number of materials) clippingtable Time Activity Equipment 5 legal proceeding pleasing 15 minutes entryway 30 minutes Practical See material and tools list minutes Closing Sign-ups for email Materials Per batch of bio plastic (Ideally per person) * 100g of potato * 300cm3 of distilled wet * 25ml of water * 3cm3 of hydrochloric acid or vinegar * 2ml pure glycerol * 3cm3 atomic number 11 hydrated oxide * Food colouring Tools * Grater * Pestle & Mortar * Strainer * Beaker/Jars * Measuring cylinder/ throw away * We ighing scales * Indicator Paper * Portable hob Preparation * situate equipment, tools and materials * Prep are sign-up sheets for new members Room requirements * An area suitable for doing hands on work and mixing liquids * Kitchen for source of heat.Use portable hobs if this isnt possible Welcome (5 minutes) Introduce yourself * Your Name * Position/Job/Organisation * Your role in the workshop * Relevant experience to the workshop (University, projects, work etc. ) apologise the learning objectives of the workshop to the audience The purpose of the workshop is for participants to learn almost the problems surrounding plastics made by fossil fuels. This is done in the installation presentation. Afterwards, participants get to make their own bio-plastic in a hands-on practical. Participants get out be able to take the plastic home with them at the end of the workshop.Introduction (15 Minutes) A presentation on the challenges facing fossil fuel plastics. Plastic is the common ter m calld for a variety of synthetic or semi synthetic materials used in manufacturing. Plastics are traditionally made from polymers and normally created from petroleum products. Plastics have become so popular to do their advantageous features. They are malleable, versatile and very cheap compared to otherwise materials. The problem with plastics is their dependency on petroleum, i. e. anele. Currently about 8% of the worlds oil is used to make plastics.This is compared to 4% for raw materials and 4% for energy. The other major problem is waste currently about 35% of flock is a plastic based product. Bio plastic currently offers one reply to the problem. Bio plastic is formed from renewable biomass sources such as vegetable oil or corn amylum. Like conventional plastics all bio plastics are biodegradable given enough time. However also akin conventional plastics about bio plastics take so long to degrade they are considered non-biodegradable. A fundamental number of bio pla stics will only biodegrade given very specific conditions.Most bulk assume the term bio plastic means it will biodegrade it actually refers to its biomass source. This leads to the advantages and disadvantages of bio plastics Advantages They are made from plant based sources so dont use any fossil fuels. Disadvantages The majority of bio plastic manufacturing plants use oil or fossil fuels to power them. Currently there is still a pick up for fossil fuels for a large scale plant. When growing resources for bio plastic it so-and-so create large scale mono-cropping problems. This can lead to the destruction of areas like the rain forest.The solution is to produce bio plastic on a shrimpy scale with biodiversity in mind. The crop should be sustainable and the process should renewably powered. angiotensin converting enzyme method for doing this is to produce bio plastic from locally grown potatoes. The chemistry second Potato starch is made from two carbohydrate polymers, amylose and amylopectin. To make bio plastic the amylopectin needs to be broken down. This way the starch can be plasticised. For a more technical audience you may choose to strain this section and continue further with the science behind the process. Further adaptation will be require however.Practical (30 minutes) The step by step book of instructions for making the bio-plastic For making bio-plastic highly accurate measurements are not required 1. Grate about 100g of potato into a pestle & plaster 2. wreak 100cm3 distilled water to the potato and grind in a pestle and mortar 3. Strain the liquid off, and repeat adding distilled water, grinding and straining twice more. 4. pop off to settle for 5 minutes 5. Strain the water off, leaving the starch behind. 6. Put 25ml water into a beaker and add 5g starch (10g wet) and 3cm3 hydrochloric acid (Use vinegar if you cant get hold of it) and 2ml pure glycerol. 7.Bring to the boil for 15 minutes, ensuring it doesnt boil dry 8. Using indica tor paper and sodium hydroxide to neutralise the solution (probably about 3cm3). 9. Add a a couple of(prenominal) drops of colouring to the mixture and mix in. 10. Pour the mixture out, and mould into your best-loved shape. 11. Leave to dry out and set. Once the mixture sets the plastic is complete. The amount of glycerol used affects the stiffness of the mixture. The less glycerol used the stiffer the plastic will be. Closing (5 minutes) Final few words * Announce contiguous event or meeting * Distribute sign up lists (If applicable) * pioneer the floor to questions