Chapter 2: Intro

Question 0

Poly disperse

Answer 0

Range of sizes (diff. masses) of individual polymers

Question 1

n=

Answer 1

Avg. for all distributions of chain lengths

Question 2

Unique properties why?

Answer 2

Result of size (DP)n approx 100

Molecular entanglement inc. strength

Question 3

Polymer vs. organic molecules

Answer 3

Poly: solids, viscous liquids, gums
O: solid, liquid, gas

Heat + poly: melt
Heat + O: melt (solid), boil (liquid), sublime (gas)

Poly: differ in length (entanglement)
O: identical molecules in pure sample, act as normal liquid

Question 4

N sub i

Answer 4

of molecules of molar mass M sub i

Question 5

M sub i

Answer 5

Molar mass of a species