Polymers

Lab 12: POLYMERS OBJECTIVE: In this lab we experiment and defined the molecular structure of polymers. We analyzed the procedure of cross-linking gelid types of polymers and observe the changes in the physical properties as a paper of this cross-linking. The changes in physical properties of a cross-linked polymer are also figure as the temperature is varied. INTRODUCTION: Polymers are large molecules made up of repeating units (monomers.) These units are chemical molecules. There are ii polymerization types that we analyzed in the experiment: thermoplastic polymers and thermo puzzleting polymers. Thermoplastic polymers changes properties when grooveed and chill outed. Thermoplastics become soft when heat is use and have a smooth, hard finish when cool ited. thermosetting polymers when open(a) to temperatures above their glass transition temperature (Tg) are molded into shapes and when allowed to cool will non change shape when heated once more than entirely wi ll char or burn. PROCEDURE: We followed the procedures see in the course manual, CHM112 General Chemistry Laboratory Manual, LaSalle University, scrape 2012. EXPERIMENTAL RESULTS: PART A- 1.)Compare the appearance of the settlements in flaskful #1 and #2. What can you say about the effect of having glucose by itself versus having I present in a polymer chain? flask #1 is clear because the sugar completely dissolves in the piss, go flaskful #2 is cloudy because the bonds of starch do not utter nor dissolve in water. 2.)What recovered when you added the acid to the starch settlement? Does it more closely resemble the glucose/ water, or the starch/ water mixture? When the acid was added to starch it does not dissociate until a higher volume of acid is included in the solution. initially the solution closely resembles the starch/ water mixture scarce as additional mL was added the solution resembled the glucose/ water mixture. 3.)What would chance if a corn plant was largely made up of glucose rather! than...If you want to get a full essay, set it on our website: OrderCustomPaper.com

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