Application Compendium - Agilent Technologies

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Conditions Sample: Polylactide, polycaprolactone and polylactide-glycolide Columns: 2 x Agilent ResiPore, 300 x 7.5 mm (p/n PL1113-630) Eluent: THF Flow Rate: 1 mL/min Temp: 40 °C Detector: Agilent PL-GPC 50 Plus (DRI and Agilent PL-BV 400RT) Results and Discussion Figures 1 to 3 show examples of dual detection chromatograms for some biodegradable polymers. Figure 1 shows a polylactide sample, Figure 2 is a polycaprolactone sample and Figure 3 is a polylactide-glycolide. 0 Retention time (min) 22 Figure 1. Dual detection chromatograms of a sample of polylactide Viscometry Differential refractive index Viscometry Differential refractive index 0 Retention time (min) 22 Figure 2. Dual detection chromatograms of a sample of polycaprolactone 2 Viscometry Differential refractive index 0 Retention time (min) 22 Figure 3. Dual detection chromatograms of a sample of polylactideglycolide The overlaid molecular weight distribution plots are shown in Figure 4. dw/dlogM Retention time (min) Polylactide-glycolide Polylactide Polycaprolactone Figure 4. Molecular weight distibutions of three biodegradable polymers The universal calibration curve was generated using linear PS standards with narrow polydispersity (Figure 5). Based on this calibration, the molecular weight averages and weight average, intrinsic viscosity (IVw) was calculated for the biodegradable polymers. The table shows the molecular weight averages for a selection of such polymers.
Figure 5. Universal calibration curve Table 1. Molecular weight averages for a selection of biodegradable polymers Sample Poly(dl-lactide) Poly(dl-lactide)glycolide 50:50 d,l-PLGA 65:35 d,l-PLGA 75:25 d,l-PLGA 95:5 d,l-PLGA Polycaprolactone Conclusion Molecular Weight Averages gmol-1 Mp Mn Mw Mz Mz+1 Mv PD 70,863 42,039 73,904 115,032 160,338 68,604 1.758 69,596 41,967 74,148 114,767 158,539 68,860 1.7668 72,153 44,926 77,077 118,849 164,761 71,687 1.7156 70,863 43,821 76,555 118,849 164,761 71,687 1.747 43,010 24,729 42,860 63,021 84,231 40,121 1.7332 42,259 24,183 41,822 62,163 83,542 390,774 1.7294 64,762 36,471 63,183 96,758 133,397 58,812 1.7324 59,209 33,999 61,212 96,217 135,076 56,698 1.8004 72,153 43,984 75,487 116,184 160,925 70,231 1.7162 72,153 42,852 74,164 114,689 158,620 68,914 1.7307 16,447 9,114 16,488 24,968 33,641 15,339 1.8091 16,447 9,231 16,280 24,477 32,753 15,167 1.7636 100,091 67,340 105,978 153,033 203,984 99,736 1.5738 100,091 67,310 105,871 154,173 206,777 99,514 1.5729 The GPC system successfully characterized some biodegradable polymers. Using RI and viscometer detection, and universal calibration, it was possible to derive the molecular weight distirbutions of the samples, and calculate several of their characterization parameters. www.agilent.com/chem This information is subject to change without notice. © Agilent Technologies, Inc. 2010 Published in UK, September 3, 2010 SI-01914
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MATERIALS TESTING AND RESEARCH SOLU
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When accuracy and reliability in me
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AGILENT TECHNOLOGIES APPLICATIONS F
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Figure 1. Agilent Cary 630 FTIR spe
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The calibration samples were measur
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Author Frank Higgins Agilent Techno
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Figure 1. The overlaid aliphatic be
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Author John Seelenbinder Agilent Te
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Figure 3. Sample is lightly pressed
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Author Dr. Mustafa Kansiz Agilent T
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microscopy provides for a factor of
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Standard ATR IR Image No Pressure (
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A visual inspection of the sample u
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Experimental Instrumentation To per
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Authors Jonah Kirkwood † and Must
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Spectra were collected from each lo
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Infrared mapping allows for multipl
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The spectra in Figure 2 are visuall
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Conclusion Agilent‟s Cary 610 FTI
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Authors Dr. Wayne Collins*, John Se
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The calibration curve obtained for
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Conclusion Select ‘Peak Ratio’
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Summary This method describes a pro
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Method configuration To determine t
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The calibration curve for the deter
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Figure 6. The MicroLab PC FTIR soft
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Summary An analytically representat
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Figure 3. The Irganox 1010 peak are
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The calibration curve and equation
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Select ‘Peak Ratio’ - from the
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Summary An analytically representat
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Figure 3. The GMS peak height absor
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Advanced Atomic Force Microscopy: E
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signal) image indicating the overwh
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A dependence of surface potential o
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A B C Figure 6A-C. The topography (
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A B Figure 10A-C. The topography (A
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KFM with AM-FM operation in the int
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ibbons is only slightly different f
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References 1. G. Binnig, C.F. Quate
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Figure 1. AFM topographic image of
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100nm 100nm 350nm 100nm Figure 3. A
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to perfect hexagonal patterns, whic
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Single-pass KFM studies have been k
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images due to the difference of the
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0.5 V) of the nanowires. Additional
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appeared in the topography image. T
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of PSS component. TEM studies of mo
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Atomic Force Microscopy Studies in
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on graphite and MoS2 are shown in F
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A B C D Scan size: 5 µm. Scan size
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images of PEDOT:PSS blend, (PEDOT -
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Young’s Modulus of Dielectric ‘
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Figure 3. Young’s modulus as a fu
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Nanoindentation, Scratch, and Eleva
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The samples listed as “D” sampl
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Figure 6. Elastic modulus results f
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Figure 11. Elastic modulus results
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Sample B Figure 16. Scratch curves
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Conclusions Nanoindentation and scr
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measurement technique has been expl
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References 1. J.L. Hay, “Using In
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Theory The complex shear modulus (G
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References 1. Jain, S.K., Bhattacha
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LCCC relies on carrying out isocrat
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log Mp 5 4.6 4.2 3.8 0.5 15% Water
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Authors Wei Luan and Chunxiao Wang
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Table 1. Chemical Information of An
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Injection Volume Influence of Real
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translator into three modes on diff
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To identify the matrix influence on
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Authors Chun-Xiao Wang and Wei Luan
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Table 1. Polymer Additives in ASTM
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1 2 3 4 5 1 Tinuvin P 2 BHT 3 BHEB
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1 Tinuvin P 2 BHT 3 BHEB 4 Isonox 1
Page 155 and 156: Authors Edgar Naegele Agilent Techn
Page 157 and 158: Results and discussion To meet the
Page 159 and 160: Authors Melissa Dunkle, Gerd Vanhoe
Page 161 and 162: Experimental The analyses were perf
Page 163 and 164: Repeatability of the SFC/MS analysi
Page 165 and 166: Conclusion The combination of the A
Page 167 and 168: Introduction Phthalates form a grou
Page 169 and 170: The analytical method was applied t
Page 171 and 172: Introduction Bisphenol A (BPA) is a
Page 173 and 174: Preparation of standards BPA and BP
Page 175 and 176: Limit of Detection (LOD) and Limit
Page 177 and 178: Sample analysis The content of BPA
Page 179 and 180: The calibration for BPA and BPF, wh
Page 181 and 182: Author Stephen Ball Agilent Technol
Page 183 and 184: Results and discussion By operating
Page 185 and 186: Introduction The wavelength of UV r
Page 187 and 188: LC parameters Premixed solutions of
Page 189 and 190: Linearity A linearity study was per
Page 191 and 192: References 1. Dr. James H. Gibson,
Page 193 and 194: Instrumentation Columns: 2 x PLgel
Page 195 and 196: Authors Greg Saunders and Ben MacCr
Page 197 and 198: Authors Greg Saunders, Ben MacCreat
Page 205: Author Greg Saunders Agilent Techno
Page 209 and 210: Methods and Materials Conditions Co
Page 211 and 212: Materials and Methods A column set
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