Differential Scanning Calorimetry (DSC)

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$Glancing Angle X-ray Diffraction (GAXRD) Technique$

DSC: Effect of Amorphous Content on Cp �Amorphous Cp is greater than Crystalline Cp �Amorphous Content increases Specific Heat Capacity Crystalline polymers contain more order and thus fewer degrees of molecular motion. Less molecular motion results in lower specific heat capacity. DSC: Effect of Annealing (Crystallization) on Cp of PEEK Complex Cp (J/g/°C) 2.2 2.0 1.8 1.6 1.4 Amorphous PEEK PEEK annealed at 300°C PEEK annealed at 330°C 1.2 100 110 120 130 140 150 160
DSC: Effect of Aging on the Specific Heat Capacity of Polystyrene Endotherm 406 272 240 120 360 380 400 420 Temperature (K) DSC: Effect of Side Chains on Specific Heat Capacity tg (h) Polymer Side Chain Cp (J/g/°C) PE -H 2.763 PP -CH 2.752 PS -Ph 2.139 As the steric bulk of the side chain increases, molecular mobility decreases resulting in lower specific heat. 66 24 3 0
Page 1 and 2:
Differential Scanning Calorimetry (
Page 3 and 4:
DSC: Definitions A calorimeter meas
Page 5 and 6:
DSC: Heat Flow Measurement Alumel w
Page 7 and 8:
DSC: Heat Flux Principle The differ
Page 9 and 10:
PDSC Pressure DSC (PDSC) : capabili
Page 11 and 12:
DSC: Typical DSC Transitions Heat F
Page 13 and 14:
DSC: Heating/Cooling Method Heating
Page 15 and 16:
DSC: Calibration & Sample Preparati
Page 17 and 18:
Heat Flow (W/g) DSC: Temperature Ca
Page 19 and 20: DSC: Traceable Calibration Material
Page 21 and 22: DSC: Effect of Heating Rate on Indi
Page 23 and 24: Heat Flow (W/g) 0.5 0.0 -0.5 -1.0 -
Page 25 and 26: DSC: Baseline Curvature Heat Flow (
Page 27 and 28: Cell Constant DSC: Recommended Purg
Page 29 and 30: DSC: Sample Preparation (cont.) �
Page 31 and 32: DSC: Experimental Conditions �Hea
Page 33 and 34: DSC: Sample Preparation - Hermetic
Page 35 and 36: DSC: Selecting Experimental Conditi
Page 37 and 38: Selecting Experimental Conditions
Page 39 and 40: Heat Flow (W/g) Heat Flow (W/g) DSC
Page 41 and 42: DSC: What is the Glass Transition?
Page 43 and 44: DSC: What Affects the Glass Transit
Page 45 and 46: Effect of Cooling Rate on Tg Heat C
Page 47 and 48: DSC: Effect of Molecular Weight on
Page 49 and 50: DSC: Effect of Side Chains on the T
Page 51 and 52: DSC: Terminology �Amorphous Phase
Page 53 and 54: Baseline Types: Linear Heat Flow (W
Page 55 and 56: DSC: PET/ABS Blend "As Received" He
Page 57 and 58: DSC: Effect of Heating Rate on Nylo
Page 59 and 60: ∆T Exothermic DSC: Isothermal Cry
Page 61 and 62: DSC: Effect of Polymer Type on Melt
Page 63 and 64: DSC: Effect of Draw Ratio on Meltin
Page 65 and 66: DSC: Specific Heat Capacity �What
Page 67 and 68: DSC: Specific Heat Capacity Equatio
Page 69: DSC: Specific Heat Capacity Step 3.
Page 73 and 74: DSC: Modulated DSC TM �Theory �
Page 75 and 76: Heat Flow Heat Flow Kinetic Heat Fl
Page 77 and 78: Distribution of Transitions in MDSC
Page 79 and 80: Temperature (°C) Temperature Chang
Page 81 and 82: Conventional DSC Cp Measurement Cp
Page 83 and 84: Reversing Heat Flow from MDSC Raw S
Page 85 and 86: Glass Transition of Polymer Resin M
Page 87 and 88: MDSC: Detection of Two Glass Transi
Page 89 and 90: MDSC: Heat Capacity vs. Cure Time T
Page 91 and 92: MDSC: Sample Pans Standard Hermetic
Page 93 and 94: MDSC: Heat Flow (Cell Constant) Cal
Page 95 and 96: K(Cp) K(Cp) MDSC: Heat Capacity Cal
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Differential Scanning Calorimetry (DSC)

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