Polymers

Lab 12: POLYMERS objective lens: In this lab we regard and defined the molecular building of polymers. We analyzed the procedure of cross-linking polar types of polymers and observe the changes in the carnal properties as a stem of this cross-linking. The changes in physical properties of a cross-linked polymer ar also escort as the temperature is varied. INTRODUCTION: Polymers are large molecules made up of repeating units (monomers.) These units are chemic molecules. There are ii polymerization types that we analyzed in the experiment: thermoplastic polymers and thermo stick polymers. Thermoplastic polymers changes properties when hot pantsed and cerement outed. Thermoplastics become soft when heat is use and have a smooth, hard finish when cool offed. thermosetting polymers when open(a) to temperatures above their glass renewing temperature (Tg) are molded into counterfeits and when allowed to cool will non change shape when heated once much entirely will cleaning woman or burn. PROCEDURE: We followed the procedures stool a line in the course manual, CHM112 normal Chemistry Laboratory Manual, LaSalle University, rally 2012. EXPERIMENTAL RESULTS: PART A- 1.)Compare the visual aspect of the settlements in flaskful #1 and #2. What can you say somewhat the effect of having glucose by itself versus having I present in a polymer chain?

flask #1 is clear because the sugar entirely dissolves in the peeing, go flaskful #2 is cloudy because the bonds of amylum do not hear nor dissolve in water. 2.)What retrieve when you added the acetous to the stiffen termination? Does it more closely jibe 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. ab initio the solution closely resembles the starch/ water mixture only when as additional mL was added the solution resembled the glucose/ water mixture. 3.)What would come if a corn launch 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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