Degradation Of Polymer

MLE3102 adulteration and Failure of Materials research lab Report for the look into: Degradation of Polymers Department of Materials Science and Engineering, Faculty of Engineering, National University of capital of Singapore, Singapore 117574. Lab Group 9 Neo Chi Jin Darren (U084552E) run through Yi Sian (U084514U) Sim Zhen Hao (U084502Y) involution of Experiment: 2 and 9 of September 2010 1. Aims and Objectives * To get the thermic oxidation and thermal degradation of polyvinyl chloride (PVC) with time * To equation the various differences mingled with the changes in PVC during thermal oxidation and those induce by thermal degradation * To learn how to use the Fourier qualify Infrared spectrographic analysis (FTIR) and UV-Vis spectrometers to obtain information on the changes in the molecule social organizations everyplace degradation time. 2. entree Polymer Degradation Degradation of polymers includes all the changes in the chemical complex body part and animal(prenominal) properties of the polymers due to external chemical or physiologic stresses caused by chemical reactions, involving bond scissions in the backbone of the macromolecules that overhaul to materials with characteristics diametric from (usually worse than) those of the starting material.

Polymer degradation in broader cost includes biodegradation, pyrolysis, oxidation, and mechanical, photo- and catalytic degradation. According to their chemical structure, many polymers are defenceless to calumnious effects from the environment. This includes attack by chemical deteriogens oxygen, its active juncture forms, humidity, harmful anthr opogenic emissions and atmospheric pollutant! s such as nitrogen oxides, sulfur dioxide and ozone and physical stresses such as heat, mechanical forces, charge of light and ablation. While trying to elucidate the general features of polymer degradation, including the appliance of unsubdivided reactions, it is important to consider the effects of various physical factors on the reactions. The degradation of materials could either...If you want to get a skillful essay, come in it on our website: OrderEssay.net

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