Synthesis, Characterization, and Gas Permeation Properties

More documents

Recommendations

Info

Figure 1. 1 H NMR spectra of G1-c-ІІ, 1, and 2c 94 Dendronization of Ethyl Cellulose Labels: a, terminal methyl protons of dendron; b, terminal methyl protons of ethyl cellulose; a′, terminal methyl protons derived from the dendron; b′, terminal methyl protons derived from ethyl cellulose. Figure 2. 1 H NMR spectra of G2-c-ІІ, 1, and 3c Labels: a, terminal methyl protons of dendron; b, terminal methyl protons of ethyl cellulose; a′, terminal methyl protons derived from the dendron; b′, terminal methyl protons derived from ethyl cellulose. were not quite different from those of 1. For instance, the Mn and Mw/Mn of 1 were
Figure 3. FTIR spectra of 1, 2c, and 3c. Table 1. Degree of Substitution and Molecular Weight of Polymers 1, 2a–c, and 3a–c polymer DStotal Mn c Mw c Mw/Mn c 1 2.69 a 71 000 237 000 3.3 2a ≈ 3.00 b 222 000 750 000 3.4 2b ≈ 3.00 b 225 000 677 000 3.0 2c ≈ 3.00 b 226 000 739 000 3.3 3a ≈ 3.00 b – d – d – d 3b ≈ 3.00 b – d – d – d 3c ≈ 3.00 b – d – d – d 95 Chapter 3 a Determined by 1 H NMR. b Determined by elemental analysis. c Determined by GPC (0.01 M LiBr in DMF as eluent). d Could not be determined. observed to be 71 000 and 3.3, respectively, while those of 2a were 222 000 and 3.4.
Page 1 and 2:
Synthesis, Characterization, and Ga
Page 3 and 4:
Table of Contents General Introduct
Page 5 and 6:
General Introduction cellulose deri
Page 7 and 8:
General Introduction biogenetically
Page 9 and 10:
General Introduction chemistry offe
Page 11 and 12:
General Introduction solution-diffu
Page 13 and 14:
General Introduction A simplified t
Page 15 and 16:
General Introduction been observed
Page 17 and 18:
polymers. 41,46 General Introductio
Page 19 and 20:
General Introduction Keeping in vie
Page 21 and 22:
General Introduction the derivatize
Page 23 and 24:
General Introduction strategy (G1-a
Page 25 and 26:
General Introduction In conclusion,
Page 27 and 28:
General Introduction 5. (a) Kobayas
Page 29 and 30:
General Introduction 15. (a) Goetma
Page 31 and 32:
General Introduction American Chemi
Page 33 and 34:
General Introduction Macromolecules
Page 35 and 36:
Silylation of Ethyl Cellulose Intro
Page 37 and 38:
Silylation of Ethyl Cellulose milli
Page 39 and 40:
Silylation of Ethyl Cellulose chlor
Page 41 and 42:
Silylation of Ethyl Cellulose Resul
Page 43 and 44:
Silylation of Ethyl Cellulose Solub
Page 45 and 46: Silylation of Ethyl Cellulose 1.034
Page 47 and 48: Silylation of Ethyl Cellulose poly(
Page 49 and 50: Silylation of Ethyl Cellulose the r
Page 51 and 52: Silylation of Ethyl Cellulose D.; Y
Page 53 and 54: Chapter 2 51 Chapter 2 Synthesis, C
Page 55 and 56: 53 Chapter 2 are few and far betwee
Page 57 and 58: 55 Chapter 2 constant volume/variab
Page 59 and 60: 57 Chapter 2 Membrane Density. Memb
Page 61 and 62: 59 Chapter 2 IR spectrum of 1 (Figu
Page 63 and 64: 61 Chapter 2 1,3-bis(trifluoromethy
Page 65 and 66: 63 Chapter 2 The increase in the po
Page 67 and 68: 65 Chapter 2 other fluorinated poly
Page 69 and 70: 67 Chapter 2 of the gas permeabilit
Page 71 and 72: 69 Chapter 2 Gas Diffusivity and So
Page 73 and 74: 71 Chapter 2 mobility of the perflu
Page 75 and 76: 73 Chapter 2 1325-1329. (b) Hamza,
Page 77 and 78: Chapter 3 75 Chapter 3 Synthesis an
Page 79 and 80: 77 Chapter 3 cost, and above all ap
Page 81 and 82: 79 Chapter 3 molecular weights (Mn
Page 83 and 84: 81 Chapter 3 1.99-2.07 (m, 2H, (CH3
Page 85 and 86: 83 Chapter 3 25 °C, ppm): 11.9, 13
Page 87 and 88: 85 Chapter 3 38.1, 44.7, 46.8, 47.9
Page 89 and 90: 87 Chapter 3 CH2CH2C(=O)O), 2.50-4.
Page 91 and 92: 89 Chapter 3 1091, 1053, 853, 806,
Page 93 and 94: 91 Chapter 3 dendrons (G1-a-ІІ-G1
Page 95: 93 Chapter 3 (DMAP) as a base, as s
Page 99 and 100: 97 Chapter 3 (partly soluble) and 3
Page 101 and 102: 99 Chapter 3 increased polarity of
Page 103 and 104: 101 Chapter 3 that of 1, and approx
Page 105 and 106: 103 Chapter 3 derivatization per th
Page 107 and 108: 105 Chapter 3 (2a-c) were in the or
Page 109 and 110: 107 Chapter 3 2709-2719. (b) Schenn
Page 111 and 112: 109 Chapter 3 17. van Krevelen, D.
Page 113 and 114: Chapter 4 111 Chapter 4 Synthesis,
Page 115 and 116: 113 Chapter 4 Since, no significant
Page 117 and 118: 115 Chapter 4 Materials. Ethyl cell
Page 119 and 120: DStotal = DSEt + DSCarb (for 1a and
Page 121 and 122: 119 Chapter 4 Figure 2. 1 H NMR spe
Page 123 and 124: 121 Chapter 4 ruling out the possib
Page 125 and 126: 123 Chapter 4 t-butyl moiety. A str
Page 127 and 128: 125 Chapter 4 reported to lead to t
Page 129 and 130: 127 Chapter 4 Table 4. Gas Permeabi
Page 131 and 132: 129 Chapter 4 augmentation in eithe
Page 133 and 134: 131 Chapter 4 indicate the signific
Page 135 and 136: 133 Chapter 4 M.-R. J. Appl. Polym.
Page 137 and 138: Chapter 5 135 Chapter5 Synthesis an
Page 139 and 140: 137 Chapter5 acid- and peptide-cont
Page 141 and 142: 139 Chapter5 Specific rotations ([
Page 143 and 144: 141 Chapter5 1.66 (brs, 1.1H, NHCH(
Page 145 and 146: 143 Chapter5 as shown in Scheme 1,
Page 147 and 148:
145 Chapter5 in Table 1. The molecu
Page 149 and 150:
147 Chapter5 almost same pattern of
Page 151 and 152:
Conclusions Table 3. Thermal Proper
Page 153 and 154:
151 Chapter5 W.; Jing, X. J. Polym.
Page 155 and 156:
Chapter 5 Synthesis and Properties
Page 157 and 158:
Acknowledgments While submitting th
Page 159:
Synthesis, Characterization, and Ga
show all

Synthesis, Characterization, and Gas Permeation Properties

Create successful ePaper yourself

Delete template?

Save as template?