Polymer chemistry

Organic/Natural cosmetic products are not superior to chemical cosmetic products because chemical products can do things organic/natural cosmetic products cannot. Hairdresser Daniel Galvin said, “There is just no way to perm hair without chemicals…”(dailymail.co.uk). In order to perm hair, the hair cuticle must be penetrated and changed. The use of chemicals is the only known way to penetrate and change the cuticle of the hair.There is no organic or natural alternative that will allow for the…

understand polymers and how they are altered to get a specific product. Polymers are long chain molecules with repeating sequences of large atoms1. Polymers are important in the field of organic chemistry, because they can be changed to create different compounds used in everyday life. Polymers can be found in nature, such as starches, proteins, and cotton. They can also be man-made, such as plastics, Kevlar, and Teflon1. Polymers can be linear, branched, cross-linked, and network1. Polymer…

tract The inhibition efficiency of polymers are highly dependent on group functionalities as well as adsorption characteristics, electronic properties, and molecular weight. The modification of these properties pave the way for future research in inhibitor technology. Introduction The inherent protection of metals and their alloys used in industry are of the upmost importance when it comes to longevity and reliability of structures. Many chemical compounds have been developed over the years…

What is Styrofoam? Styrofoam is a brand of closed-cell extruded polystyrene foam currently created for thermal insulation and craft applications. Dow Chemical Company retained and produced the Styrofoam. Through petroleum product known as styrene, Styrofoam was created. The styrene is amended into a clear molten mass of polystyrene through a complex chemical process known as polymerization. It would become a hard plastic if it were left to cool. Disposable eating utensils are created from this…

6.3. A. Microemulsions (135-143) Microemulsions are clear, stable, isotropic mixtures of oil, water, and surfactant, frequently in combination with a cosurfactant 135-137. Microemulsions have several advantages such as enhanced drug solubility, good thermodynamic stability, and higher transdermal permeability over conventional formulations 138,139. Many studies reported the use of microemulsions as topical drug delivery vehicles showed their ability to improve transdermal and dermal delivery…

polyurethane segments show high intersegment attraction such as hydrogen bonding and may be able to crystallize and form hard segments. In such polymers hard segments with Tg well above normal ambient temperature are separated by polyol soft segments, which in the mass are rubbery in nature. Hard and soft segments are arranged alternate along the polymer chain. Fig.7. Polyurethane chain configuration [32] 4.2.2. Polyurethane properties and advantages for product development Polyurethanes…

does your major (or minor) fit into your life’s plan? Chemistry, like all other sciences, provides us with a better understanding of how matter behaves. Chemistry provides ideas of explanation for laws of nature and realism, which are investigated using the specific theories, concepts, methods and experimental tools. I became a chemist to apply this to my life, and to provide tangible change to society. During my time in high school, AP chemistry was regarded as the toughest class. It was…

2.1 Polydimethylsiloxane (PDMS) Polydimethylsiloxane (PDMS) own to a group of polymeric organosilicon compounds that are commonly stated as silicones. PDMS is optically clear, and, in general, non-flammable, non-toxic, and inert. PDMS is viscoelastic, meaning that at long flow times (or high temperatures), it acts like a viscous liquid such as honey. However, at short flow times (or low temperatures), it acts like an elastic solid such as rubber. In other words, PDMS will flow to cover the…

Spinning of Nylon Fiber: The turning of the nylon filaments is completed with dissolve turning. There are two strategies for liquefy turning: 1. Grid turning 2. Extruder turning. Lattice turning is utilized for the generation of better fibers. The nylon chips are made to fall on a hot matrix that melts the nylon pieces. The liquid nylon is pumped through a sand channel to the spinneret. The sort of fiber created relies on the quantity of gaps on the spinneret, the size and the state of the…

long side chains, Biopol is also flexible. As a result of adding PHV, the polymer gains a lower melting point, lower crystallinity, more elongation, as well as an overall higher tensile strength. Generally, Biopol is a stable polymer, being resistant to water,…