The following figure represents the result of a calorimetry experiment exploratory scanning (DSC) conducted with a polyethylene sample terephthalate (PET). The experiment consists of heating at a constant rate (first heat) followed by cooling (cool), also at a constant rate. Identify, in each of the curves, the nature of each thermal event (fusion, Tg, ...).
The following figure represents the result of a calorimetry experiment exploratory scanning (DSC) conducted with a polyethylene sample terephthalate (PET). The experiment consists of heating at a constant rate (first heat) followed by cooling (cool), also at a constant rate. Identify, in each of the curves, the nature of each thermal event (fusion, Tg, ...).
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
The following figure represents the result of a calorimetry experiment
exploratory scanning (DSC) conducted with a polyethylene sample
terephthalate (PET). The experiment consists of heating at a constant rate
(first heat) followed by cooling (cool), also at a constant rate.
Identify, in each of the curves, the nature of each thermal event (fusion,
Tg, ...).
Transcribed Image Text:1.5
endol
1.0-
Col
0.5-
0.0-
First Heat
-0.5-
-1.0-
20
60
100
140
180
220
260
Temperature (°C)
Heat Flow (W/g)
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