Assignment
1. List all vibration bands of each sample, identify their bond types and determine possible
chemical structures of polymers. Attach IR spectra to your assignment. Demonstrate your
work and analyze your data.
Sample 1: Parafilm


Peak at 2847.87 is C-H (sp^3 carbon)
Possibly Polyethylene
Sample 2: Pipet


Peak around 2800 is C-H (sp^3 carbon)
Polypropylene
Sample 3: Weight boat
Sample 4: Plastic Sheet

1680-1820 C=O
Sample 5: Student Sample (Bubble Wrap)

C-H (sp^3 carbon)
2. List all peaks of H NMR spectrum of each sample and determine molecular weight,
copolymer component. Attach NMR spectra to your assignment. Demonstrate your work
and analyze your data.
Sample 1: PPG
Peak 1 – 1.15 ppm
Peak 2– 3.56 ppm
Sample 2: PEG
Peak 1: 3.67 ppm
Sample 3: PEG Methyl Ether
Peak 1: 3.65 ppm
Sample 4: PEG-b-PPG
Peak 1: 1.15 ppm
Peak 2: 3.55 ppm