If a material is said to be biodegradable this means it is capable of being decomposed by biologic agents, especially bacteria.(1) Biodegradable polymers are polymers that break down and nod off their initial integrity. Polymers are substances that have a molecular grammatical construction made up mainly of a large round of similar units bonded together. Biodegradable polymers are used in medical examination devices to avoid the need for a second operation to rack up them.
There are many different types of polymer humiliation. Degradation is a process that deteriorates polymer properties or their external appearance, changing its properties such as tensile strength, colour, shape, etc. Degradation preserve be score by a number of factors, such as heat, oxygen, moisture, automatic stresses and other factors. Depending on the agent, the following forms of polymer degradation are sublime: thermal, thermal oxidative, photochemical, hydrolytic, and radiation, among others.(2) Usually numerous types of degradation processes take station simultaneously in a polymer; for example, making a polymer into a product, it undergoes thermal, thermal oxidation, and mechanical forms of degradation.
Thermal degradation of polymers: thermal degradation of polymers is a molecular weakening as a event of overheating. At high temperatures the components of the long range of a function backbone of the polymer can begin to separate (molecular scission) and react with one another to transfer the properties of the polymer (3) thermal degradation normally results in changes to the molecular tilt of the polymer usual property changes include reduced ductility, colour changes, cracking, popular reduction in most other desirable bodily properties
UV degradation of polymers: Common synthetic polymers which may be attacked include polypropylene and LDPE where tertiary carbon bonds in their chain structures are the centres of attack. (4) The...If you want to get a full essay, format it on our website: Ordercustompaper.com
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