Polymers part 2 Flashcards

1
Q

Number average

A

(M1n1 + M2n2) /(n1 + n2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

average weight

A

Mavg = (M1^2 n1 + M2^2n2)/(M1n1 + M2n2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

PDI =

A

Average weight/number density

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

PDI = 1

PDI > 1

A

=1: Homopolymer/Natural polymer

>1: Copolymer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Polyester 3 examples

A

Dacron, PHBV, Glyptal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Polyamide 2 examples

A

Nylon 66 , Nylon 6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Forces order

A

Fibre > Thermosetting > Thermoplastic > Elastomer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly