Pollution is one of the main problems the world faces today. One of the reasons is the overload of non-biodegradable objects like plastics, cans and Styrofoam. The invention of plastics and Styrofoam made a huge change in our society and it helped us in many ways. But it is also one of the main pollutants that destroy our planet. Because of these we devised a way to recycle used Styrofoam, and this is to make glue out of it. This glue can help reduce the number of Styrofoam that will be thrown away. Styrofoam is made of polystyrene beads which unravel into fine strands whenever it is melted/dissolved. Due to the unraveling of polystyrene, the Styrofoam will become a thick like gel. When it is a gel, it will be moldable and when it dries it will be very sticky. It is a very effective adhesive to glue things together. But it is not very safe since it is napalm and it can damage the lungs if it is burned. It also gives off a foul odor.
Statement of the problem 1. Will it help solve the problem of pollution in our society? 2. Will it be useful and effective? 3. What will be the effects of using the glue?
It will not be effective and it will be harmful.
Theoretical Framework Theory of Plastic Deformation
There are several mathematical descriptions of plasticity. One is deformation theory (see e.g. Hooke's law) where the stress tensor (of order d in d dimensions) is a function of the strain tensor. Although this description is accurate when a small part of matter is subjected to increasing loading (such as strain loading), this theory cannot account for irreversibility.
Ductile materials can sustain large plastic deformations without fracture. However, even ductile metals will fracture when the strain becomes large enough - this is as a result of work hardening of the material, which causes it to become brittle. Heat treatment such as annealing can restore the ductility of a worked piece, so that shaping can continue.