how does photopolymerization work?  can you do it with styrene?
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I attached a thermal method for styrene\n\nThe photoinitiation is a bit more complicated and under research.  No known monomer can photopolymerize itself. It works by using photons to break apart special initiators/catalysts that form cations, anions or free radicals needed for polymerization.  While there laboratory models about photoinitiation, you would need an actual lab to control the reaction, because no kitchen or work bench will do. Good luck.
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Polymerise (v), Polymerization (n),  is a process of reacting monomer molecules together in a chemical reaction to form three-dimensional networks or polymer chains . There are many forms of polymerization and different systems exist to categorize them.\n\nThe main categories are\n\nAddition polymerization \nCondensation polymerization \nTerminology in the literature to represent these types of polymerizations is not standard: there are multiple terms for the same type. For example, "step polymerization" and "step-growth polymerization" refer to the same type of polymerization.\n\nHistory\nPolymerization dates back to the beginning of DNA based life, as both DNA and proteins can be considered polymers. The first 'synthetic' polymers of the 19th century were actually formed by modifying natural polymers. For example nitrocellulose was manufactured by reacting cellulose with nitric acid. The first genuinely man-made polymer, the phenol-formaldehyde resin bakelite, was synthesized in 1872. However, research into polymers and polymerization only really accelerated in the 1930s after the serendipitous discovery of polyethene by the chemical company ICI.
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See  http://en.wikipedia.org/wiki/Lenticular_printing\n\nTh
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Make a 3d model and print it out using anim8or @ anim8or.com\n\nIf that is not in option, try using a styrafoam block and carve it.
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??? Do you go to the McGyver School of Science and Technology? I never heard of anything like this, do you have to do it with only one hand? You can try this, inflate a rubber glove and wrap it in plater of paris, or stick your hand (in a glove) into a bucket of plater and let it harden to form a mold. Fill the mold with the material of choice for your prosethic device.
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The principle works, but the technical applicability is rather low.\n\nYou can use hydrogen peroxide solution in higher concentrations, as used by hair stylists or as concentrate for cleaning contact lenses. The reaction speed will be increased considerably. Unfortunately, reaction heat will become an issue, too, and oxidation of potatoes as well.
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In photolithography, first photo resist is added to the surface of the wafer. this photo-resist is then covered with mask for required pattern. This mask can be in contact to the photo-resist or can be a non-contact. present technology uses advanced optical arrangement so that mask can be place with out any contact with the wafer. \n(if contact mask is used then mechanical polishing is required to remove mask)  \nTo remove the photo-resist, different organic agents are used. The choice of chemical agent depends on the type of photo-resist (positive or negative). commonly used chemicals are aceton, methanol, isopropanol. some of the other agents include NMP, glycol ether, amine, DMSO, etc. (search for specific chemical agent for particular photo-resist and semiconductor)\nUsually, wafer is immersed in one of the agents and heated with occasional stirring (manual or ulta-sound). Finally it is rinsed several times with distilled water\n\ngenerally, Plasma is used to ionize the doping agents (usually gases). The ions are then separated using strong magnetic field and electric field is used to accelerate the ions and thus enabling to impinge on the surface of the wafer. the depth of ion penetration depends upon its speed which in turn depends on strength of e-field. (for specific details of viista 8000, check its manual) \n\nHope this helps
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Research as been done on biodegradable plastics that break down with the exposure to snlight. Starch can be mixed with plastic to allow it to degrade more easily, but it still doesn't lead to the complete breakdown of the plastic, unfortunately. Researchers have even genetically engineered a bacteria that will synthesize a completely biodegradable plastic, however this material is very expensive at the moment.\n\nQ: How are plastics recycled?\n\nThermoplastics can be remelted and reused. There are certain 'codes' placed on the plastics to help sort them out during the recycling process. You've probably seen them on various bottles, too. The link below lists the sort of labels you may find on plastics.\nhttp://en.wikipedia.org/wiki/Plastic#Biodegradable_Plastics\n\nQ: What are the long term impacts of these degradable plastics?\n\nThe disadvantage of biodegradable plastics is that the carbon that is locked inside them is released as a greenhouse gas, carbon dioxide, when they degrade. These plastics are also too costly and limited to use at the moment. When such plastic materials are dumped into landfills, they can become "mummified" and persist for decades even if they are supposed to be biodegradable. In this regard, though, plastics are no worse than food or paper, which also fail to degrade in landfills.\n\nHope this helps!
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How We Do It From http://rapidtoolinc.com\n\n1. E-mail us your STL file. \n\n2. We enter your STL file into the sinterstation. \n\n3. A layer of powdered material is spread. As the process begins, a precision roller mechanism automatically spreads a thin layer of powdered SLS material across the build platform. \n\n4. Sinter a cross-section of the STL file. Using data from the STL file, a CO2 laser selectively draws a cross section. It selectively "sinters" (heats and fuses) the powder creating a solid mass that represents one cross section of the part. \n\n5. Repeat. The system spreads and sinters layer after layer until the object is complete. \n\n6. Remove the part. Once the part is complete, remove it from the part build chamber and blow away any loose powder. \n\n7. Finish as desired. Use the part as is-or sand, anneal, coat, or paint it before using it for its intended application. \n\n8. Fed Ex your parts to your door, typically within 2-3 days.
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This group exists in order to promote polymer science through the organisation of an annual conference. The group is a non-profit-making charitable organisation and has run a series of high-level conferences for over forty years. We encourage participation by active researchers from academia and industry, from the UK and abroad.\n\npl. visit:\nhttp://www.highpolymer.org.uk/
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Hussain, your question has been sitting in the Quotation category for six days now without a reply.  Although I know the basic function of a paint dissolver, I do not know the chemical reaction, or how to size, etc.\n\nMay I suggest that you ask this question again in the Home & Garden category, where they have a sub-category - Decorating & Remodeling.  I'm sure you will find many experts there who will be able to help you.\n\nHussain, I've just checked and you are a complete newcomer to Yahoo Answers so I will direct you to Decorating & Remodeling.  First, go to the top left hand corner of this page, where you will see (in blue) the word "home", under the green ASK.  Click on that, and then when the categories appear beneath, click on Home & Garden (14 down).  You will then see the sub-categories - one of which is Decorating and Remodeling (2 down).\n\nWelcome to the family ... and good luck!
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Polymers can be made through a process called ADDITION POLYMERISATION.\n\nPolymers are made from starting materials known as MONOMERS. In addition polymerisation, the monomer is a member of a family of compounds known as the ALKENES.\n\nDuring the polymerisation, the carbon to carbon double bond that exists in all alkenes is broken apart and the resulting molecules join together to form a straight chain molecule.\n\ne.g. the polymerisation of hundreds of ethene monomers will result in the polymer POLYETHENE.
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I think you are referring to ABS Acrylonitrile Butadiene Styrene, not polystyrene.\n\nand its cost is a function of purchase volume, EAU, stocking, lead time, colorants, and other additives
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Flouropolymers are inert, meaning they don't react with other chemicals.  They also have the lowest known friction of any material (run your finger or slide a glass across a well varnished bar or table and you'll know what I mean)  They Contribute to paint's stain resistance by forming a sort of shield inside the paint (because they don't chemically react) and also give you some very shiny paint.  You can find a lil more about different polymers at my source link...  Good luck
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How are Rubber Bands made :\n\na) Mixing & Compounding\n\nThe rubber is mixed with various chemicals in required proportions depending on rubber content. This compounded mixture is then strained to ensure that there are no extraneous materials in compounded material.\n\nb) Extrusion\n\nThe compounded rubber is then put into an extrusion machine. This extrudes the rubber into tubing form using specific die heads to achieve a required diameter and wall thickness. The tubing is then cut into lengths and put onto mandrels of the same size / diameter.\n\nc) Curing\n\nThe tubing now on mandrels is put into an autoclave (oven) to ensure tubing reaches it's set form. The tubing is then blown off the mandrels for passing to the cutting area.\n\nd) Cutting\n\nThe tubing is then fed into rotary cutters to cut into designated cut widths of rubber bands.
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Dow Chemical Co. makes the polymer...contact them for a list of suppliers.\nIt is also available from some chemical supply houses and specialty polymer distributors...try M2 Polymer Technologies, eg.
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It will highly depend on the polymer.  I would think most will not without decomposition.