Table Window Help Home Work 4 References Mailings Review View nser Due Friday, 9

Question

Table Window Help Home Work 4 References Mailings Review View nser Due Friday, 9125/2017) 1. (15 points) Poly( caprolactone) is being considered as a potential material for a following vascular graft. After a particular batch has been made, someone gives you the fractional distribution data of PCL molecules and asks you to calculate Mn, Mw and PDI for this polymer Use your PDI number to comment whether this polymer is suitable for the vascular graft application. M: Number average molecular weight M.: Weight average molecular weight PDI: Polydispersity index Use the following equations to generete the umbers in the following table wi Mi Ni wi 0.10 0.10 0.30 0.40 0.10 M (kgmol) 25 30 4070100 2. (5 points) Prepare two statements with examples on what you have learned about polymer conformation and configuration in the class. 3. (6 points) What are the three different types of solvents you can coasider while dissolving a polymer biomaterials to make a solution. How do you define those solvents? 4. (4 points) What type of monomers can be polymerized via condensation and addition reactions, Explain with three examples for each type of reaction. 5. (5 points) You are examining a copolymer for its potential as a material for a vascular graft. You are trying to determine whether you want a high or low degree of crystallinity in the material. What type of structures for copolymers have a higher probability for crystallization? 220 Words English (us) 24t

Explanation / Answer

Conformation : it refers to order that arises from the rotation of molecules about the single bonds. Configuration : describes the spatial position of atoms with in the molecule.

Wi 0.1 0.1 0.3 0.4 0.1 sum=1

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