(iii)Propose a synthetic pathway to synthesize the diblock copolymer, PEO-b-PNIPAM (polymerC). Comment on the water solubility of this diblock copolymer as a function of temperature.LCST of PNIPAM in water is 32 °C.ΝΗFigure 3. Chemical structure of polymer C[10 marks]

To propose a synthetic pathway for the diblock copolymer PEO-b-PNIPAm (Polymer C) and comment on its…

Answered: (iii) Propose a synthetic pathway to…

Chemistry

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ISBN:9781305957404

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Chapter1: Chemical Foundations

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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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In reference to cloth or fiber, the term acetate usually means cellulose acetate, a semisynthetic polymer made by treating cellulose with acetic anhydride. Cellulose acetate is spun into yarn by dissolving it in acetone or methylene chloride and forcing the solution through spinnerets into warm air, where the solvent evaporates. An organic chemistry student wore a long-sleeved acetate blouse to the laboratory. She was rinsing a warm separatory funnel with acetone when the pressure rose and blew out the stopper. Her right arm was drenched with acetone, but she was unconcerned because acetone is not very toxic. About ten minutes later, the right arm of the student’s blouse disintegrated into a pile of white fluff, leaving her with a ragged short sleeve and the tatters of a cuff remaining around her wrist. Explain how a substance as innocuous as acetone ruined the student’s blouse.
7 Ethanoic acid has a melting point of 17 °C, ethanamide has a melting point of 81 °C, and ethanal has a melting point of -125 °C. Rationalize the differences in melting point between these three compounds.
The number average molecular weight of polymer A reaches 16000 g/mol at the percent conversion of 92 %. What would be the stoichiometric imbalance factor in this polymerization? Given that the molecular weight of the repeating unit of this polymer A is 113 g/mol
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The following condensation polymerization using 1.00 mol of diacid (limiting reactant) and a slight excess of diamine gave Nylonx.x. O H₂N(CH₂)6NH2 HOC(CH2) COH ??? mol (iii) + 1.00 mol Write the numbers in Nylonx.y. Degree of polymerization at p value of 0.995 was found to be 91. Then find out the value of 'r, and mol of diamine used. Keeping in mind that you used excess diamine, write down the structure of the polymer End group-[AB] End group n
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Chemistry Based on the structure shown, what kind of interactions do you expect between HM and the chemicals listed below? OH COOH CH,COOH (CH2-CHn CH2 CO COOH NH HCOH HCOH OH НСОН OCH3 HCO copper(Il) (Cu2) Choose. hydronium ion (H3O*) hydrophobic interactions chelation glycerol (CH2(OH)CH(OH)CH2(OH)) hydrogen bonding methylene chloride (CH,Cl2) salt linkage or ligand exchange glucose ((CHон)4(CH2ОH) (СHO)) protonation copper(II) complexed with oxalate (Cu..0OC-coo) Choose. benzene (CeHe) Choose. decane (C10H22) Choose.
3. Draw the structure for the monomer(8) from which the following polymer is made and name the type of polymer (addition, polyester or polyamide). a) PETE (polyethylene terephthalate) 4 PETE 0-CH;-CH2 CH2 Polyester the monomers are: но-сн2-сн,—он and но OH b) PP (polypropylene) PP H CH; H CH, H CH; H CH; H H H HH Addition WPS Office the monomer is: H H
The number-average degree of polymerization is given by n = M₂m, where mis the molecular weight of the monomeric unit. For the above sample n corresponds to the value 785. Determine which of the following polymers is present in the sample (all calculations must be shown). H I 11 Dt. Ht. CI A B D
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(iii) Propose a synthetic pathway to synthesize the diblock copolymer, PEO-b-PNIPAM (polymer C). Comment on the water solubility of this diblock copolymer as a function of temperature. LCST of PNIPAM in water is 32 °C. ΝΗ Figure 3. Chemical structure of polymer C [10 marks]