• No results found

Sketch the weight versus temperature curve you would expect from a TGA instrument

N/A
N/A
Info
Downloaden
Protected

Academic year: 2022

Share "Sketch the weight versus temperature curve you would expect from a TGA instrument"

Copied!
1
0
0

Bezig met laden.... (Bekijk nu de volledige tekst)

Download het nu ( 1 pagina )

Hele tekst

(1)

050119 Quiz Characterization DSC/TGA

1) Sketch the heat versus temperature plot for a semicrystalline polymer such as PET, showing the glass transition, crystallization and melting regions. (indicate which direction is endothermic)

2) How does the rate of heating effect the curve drawn in question 1?

3) What is a modulated DSC and what advantages does it have over the DSC used in this lab for polymer samples?

4) Consider a semi-crystalline sample such as nylon that is hydroscopic, melts at 120 C and degrades at 250 C. Sketch the weight versus temperature curve you would expect from a TGA instrument.

5) What is the difference between a DSC and a DTA instrument?

6) Describe how a TGA compares to a DSC in terms of instrument construction and components. How would the TGA curve for nylon 6-6 differ from the DSC curve for nylon 6-6?

Referenties

Download het nu ( DOC - 1 pagina - 22.50 KB )

GERELATEERDE DOCUMENTEN

Would you prefer your coefficients with a little bias, or rather with a lot of variance?

In this editorial, we would like to focus on the question whether bias in regression estimates should indeed be avoided, or whether it may actually yield desirable

PLACES WHERE YOU WOULD

Why did they choose to geocache in Drenthe, did they go geocaching alone or with other teams, what is their place attachment to the location in which they went geocaching and if

The “second causative”: A typological sketch

I do not analyze here the intricate (and rather rare) systems in lan- guages that have a few causative morphemes which can combine with each other in the same verb, such as Carib

This is the normal length of a research paper: always longer than you would expect

If you wish to remove or change the word Page in the footer, change the value

Consider a transformation of the complex plane z 7→ a¯z + b, (1) where a, b ∈ C are such that |a

It is known that this transformation has a straight line composed of fixed points... Argue that this

A sketch grammar of Lamjung Yolmo

The relationship to other Yolmo varieties, including that spoken by the main population in the Melamchi Valley, and the Syuba variety spoken in Ramechhap,

Personalization as a Trigger for Reviews: Would You Write One?

›  Personalization does not have a significant impact on willingness to write a review ›  Personalization leads to a significant increase in privacy concerns. ›  A

WHY WOULD I HELP YOU? – MOTIVES THAT DRIVE ADVICE GIVING AT AN ONLINE FORUM

In sum, while there are significant relationships between the positivity of product experiences and product involvement on the one hand, and product involvement and the tendency to