Superabsorbent polymer

Part C Question 1 Addition polymerization In addition polymerization, polymer is formed by addition monomer without eliminating any product at specified temperature, pressure and presence of catalyst. Different methods of addition polymerization are free radical polymerization, cationic polymerization, anionic polymerization and coordination polymerization. Mainly addition polymerization occurs in the monomers having double bound. This process has three stages initiation, propagation,…

Polymer - A word, which is connote for large molecules (that a molecule made from simple repeating units called monomers). The monomers are main building block of polymers. Polymers play an essential and ubiquitous role in everyday human life because of the extraordinary range of properties. Polymers are among the most widely used and important type of materials today. Polymers have been with us from the beginning of time; they form the very basis (building blocks) of life. Animals, plants all…

Advancements in polymer chemistry have resulted in a large number of aircraft moving from metallic materials to composite for their primary structures. The definition of a composite states that it is a new material with superior structural properties, which is formed from two or more materials that differ in physical and mechanical behaviour.…

chemically to produce a large chain-like or network molecule (www.britannica.com). Through polymerization, a polymer is produced. A large number of small molecules react to produce a small number of large molecules. The reactant of polymerization is a monomer. Monomers, meaning "one part" or "one member," are small units that make up giant molecules (Exploring Giant Molecules). The product is a polymer. There are two main types of polymerization reactions. They are addition polymerization and…

Pectin yield was determined as weight of dry pectin against the weight of initial residues multiplied by 100%. Y=100(P/Bi) Where Y is the extracted pectin yield (%), P is the amount of extracted pectin in grams and Bi is the initial amount of sweet potato residues used to extract pectin. Equivalent weight and Degree of methoxylation The equivalent weight was determined according to the method by Barretina et al., (Barretina et al. 2012). 0.25g pectin was wetted with 5ml ethanol and topped…

3.0 Results and Discussion Figure 1 shows the infrared spectrum for both crosslinked and non-crosslinked films. Both carrageenan and vanillin contain similar functional groups such as CH4, C=O, C-O-C, C-OH. There is no significant difference in the spectrum that can be detected for crosslinked and non-crosslinked film samples. The spectrum can be divided into upper and lower spectrum. In the upper spectrum for the region of 2000 – 3600 cm-1, O-H stretching (3100 – 3600 cm-1) and C-H stretching…

Compare and Contrast: iPhone SE versus iPhone 6S. Apple is the biggest successor in the tech-world today. The booming demand of Apple products seems neverending. iPhone is one of the best selling products among them. Every year, apple introduces newer and advanced version of the iPhone. iPhone SE and iPhone 6S are the most recent devices launched by Apple. Both devices have their own pros and cons. The purpose of this paper is to summarize the similarities and the differences between iPhone SE…

There are several power source options in the market to choose from. After several hours of research, it was determined that the best two options were lithium polymer battery and a high capacity smart technology USB power bank. Design #1: LIPO Battery The LIPO battery is a great piece of equipment to power electronic devices such as RC planes and RC cars. These types of batteries can usually push out significantly…

diapers contain polyacrylic acid, a super-absorbent polymer. When some of this polymer was added to a beaker with water and stirred, it absorbed many times its weight in water. Polyacrylic acid is a polymer made…

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…