Polymers

in work to make progress. Polymer science was the most logical choice I could have made for my career path. The fact that I could not look in any direction without seeing a polymer in some shape or form set off at least a dozen light bulbs in my mind. Many of the most important molecules in biological systems, textiles, coatings, food and more are made from polymers. Despite its importance today and potential for future economic growth, I was shocked by how few Polymer Science programs there…

concentration andeventual cracking, Ceramics- Stiffness, strength, corrosion resistance, dimensional stability, good surface finish. Brittle and expensive, low conductivity. Polymer Concrete- Low Young’s Modulus, low thermal conductivity, high damping properties. Tensile and impact strengths lower, creep more under sustained load Polymer-Impregnated Concrete (PIC)-…

WITHOUT POLYMER OUR LIFE WOULD BE SLIGHTLY HARDER BECAUSE WHEN YOU CLEAN THE HOUSE YOU HAVE TO GET CERTAIN MATERIAL TO CLEAN CERTAIN SPOTS. WITH POLYMER IT CAN CLEAN ANYTHING BUT STAINS! I WANT TO HONOR STEPHANIE KWOLEK WITH A STATUE AT THE NATIONAL INVENTORS HALL OF FAME BECAUSE SHE WAS THE FOURTH WOMAN TO BE ADDED TO THE NATIONAL INVENTORS HALL OF FAME IN 1995.THE OTHER THING I WANT TO HONOR STEPHANIE KWOLEK IS MAKE A POLYMER ROOM IN THE NATIONAL INVENTORS HALL OF FAME. A POLYMER ROOM TO…

between solid and liquid stages of matter. Slime and other substances like it are common in the average everyday life today, and yet are almost unnoticed. Slime is a colloid, a substance that shares both liquid and solid traits. Many colloids are polymers, which are a certain type of molecule. Although slime may seem simple, in reality it is quite complex in the microscopic standpoint. Slime can also be referred to as a non-Newtonian fluid. A non-newtonian fluid is a fluid that has a…

Polymers behave in a similar way as the long strands of spaghetti. If the long molecules slide past each other, the substance acts like a liquid. If the polymers stick together in a few places, then the substance will be a rubbery solid, an elastomer. And elastomer is a natural or synthetic polymer having elastic properties. When the glue mixture was added to the borax, the borax acted as a cross-linker…

These functional groups are bonded with membrane surface groups by ionic or polar bonding.127 Therefore, the polymer surfaces suitable to this kind of modification must have sites that are able to undergo electrophilic or nucleophilic attack. Such polymer structures include benzene rings, hydroxyl groups, double bonds or halogens.127 The polymer surfaces can be functionalised via nitration,135 amination,135 bromination,136 sulfonation,122,137,138 benzoylation,139 and carboxylation…

Task-5 a) • Metals Metal structure is made up of crystals of metals which are made up of positive metal ions and these ions are surrounded by a sea of delocalized electrons. To separate these substances from this crystal lattice a lot of energy is needed. In between the positive and negative ions is present a strong electrostatic force of attraction. That is the reason why metals have strong melting and boiling points. In order to slide one layer of the metal ions over the other layer very less…

When we think “polymer”, we should not limit ourselves to its biological applications; polymers can do so much more. Polymers are the “recipe for life.” We find them everywhere we look. For example, turn to your friend. What is he or she made of? The answer is polymers. Polymers make up essential molecules in our bodies, such as proteins or nucleic acids. They may be microscopic, but their functions in our bodies are important. Background Information There is so much more to being…

On the other hand, contact between plastic containers and drugs can present a number of problems including leaching, sorption, permeation, chemical reactivity of the plastic polymer, and alteration of physical properties of the plastic. These problems have been considered for plastic used as a packaging materials. Glass prefilled syringes, although less expensive than those which are reusable, have a higher cost than those made…

Results and discussion 3.1 Ionic conductivity measurements The complex impedance plots for the polymer electrolytes with different amounts of TBAI /LiI is shown in Fig. 1. It can be displayed that the ionic conductivity increases with the increase in TBAI salt content and reaches the maximum value of 1.737×10-3 S cm-1 at 298 K for 60 % of TBAI content, beyond decreases on further addition of TBAI. At a low content of TBAI, the conductivity is low due to the small number of charge carriers in…