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Answer the following short questions.
1) Name two mechanisms that describe the kinetics of phase separation
2) Name 3 specific interactions that affect polymer-polymer miscibility
3) Name 3 methods for the preparation of a polymer blend
4) Name 3 methods used to compatibilize a polymer blend
5) List 3 types of liquid crystals
6) Name 3 types of interpenetrating polymer networks
7) Name 2 types of melt-miscible blends formed by cooling from a polymer when it crystallizes
8) Name 3 microphases exhibited by block copolymers
1)
Two mechanisms that describe the kinetics of phase separation are as follows :
A) Nucleation and growth described by Ficks theory
B) Spinodal decomposition used in the case of liquid liquid separation
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Please make sure to display your thought process? It is imperative to be able to follow...
Please make sure to display your thought process? It is
imperative to be able to follow how the answer was deduced. Please
be as thorough as possible. Please address all parts of this
question.
Q2: Calculate the solubility parameters (S)of the following polymer blends using the group contribution method (i..e., summations of F and v from the published table in the course notes for Small's data) (a) Polyvinyl acetate with poly(methyl acrylate) (b) Polystyrene with Polybutadiene (c) Polyacrylonitrile with Polystyrene...
Please make sure to display your thought process? It is imperative to be able to follow how the answer was deduced. Please be as thorough as possible. Please address all parts of this question. A) Name 3 types of heterogeneous polymerizations in which polymer particles are formed. B) Compare and contrast the mechanism and general formulation components of each type of polymerization. C) Give the size range for each.
Please make sure to display your thought process? It is imperative to be able to follow how the answer was deduced. Please be as thorough as possible. Please address all parts of this question. Use the Fox equation to calculate the glass transition temperatures (Tg) of various blends of polyurethane (PU) / Polyacrylate (PA) simultaneous interpenetrating polymer networks (SIN). The below parts are all part of one question. Make your calculations for blends of (a) 90/10 (wt) PU/PA (b) 75/25...
Please make sure to display your thought process? It is imperative to be able to follow how the answer was deduced. Please be as thorough as possible. Please address all parts of this question. A) How are reactivity ratios defined in free radical copolymerizations? B) Name 3 types of polymerization reactors. C) What is compositional drift in a copolymerization and how can the drift be reduced?
Please make sure to display your thought process? It is imperative to be able to follow how the answer was deduced. Please be as thorough as possible. Please address all parts of this question. List very clearly (one by one) and discuss three external factors that influence the magnitude of the yield strength of an amorphous polymer? Can these factors be related to shear rate, temperature, physical aging, creep rupture, air yielding, environmental stress cracking?
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The Kusy model can be used to calculate the critical volume (Vc)
of small particles (in a large particle/small particle emulsion
polymer blend) that will fill in the interstitial spaces in a
packed particle film. If the diameter of the small particles is 50
nm and...
Please make sure to display your thought process? It is imperative to be able to follow how the answer was deduced. Please be as thorough as possible. Please address all parts as they are critical to answering this question correctly: PLEASE BE AS THOROUGH AS POSSIBLE WHEN COMPARING AND CONTRASTING THE PROPERTIES Compare and contrast the properties carbon fibers, carbon nanofibers and carbon nanotubes?
Please make sure to display your thought process? It is imperative to be able to follow how the answer was deduced. Please be as thorough as possible. Please address all parts as they are critical to answering this question correctly: A) Why is the dispersion of nanoparticles so important to rheological behavior?
Please make sure to display your thought process? It is imperative to be able to follow how the answer was deduced. Please be as thorough as possible. Please address all parts of this question. 1. Match the polymer processing operation with the workpiece manufactured using that process Answer to match (e.g., A-1) Polymer Processing Operation Workpiece A Single screw extruder 1 Gloves B Spin coating 2 Bottles C Blow Molding 3 Pipe and tubes D Cast film extruder 4 Paint...
Please make sure to display your thought process? It is imperative to be able to follow how the answer was deduced. Please be as thorough as possible. Please address all parts as they are critical to answering this question correctly: 1) What are the differences between Newtonian fluids and powerlaw fluids? 2) Describe fluids that exhibit chemorheological behavior.