Research Article
Formulating Polypropylene with Desired Mechanical Properties through Melt Compounding of Homopolymer and Impact Copolymer
Table 2
The thermal properties of HPP, ICPP, and the ICPP and HPP mixtures.
| | Sample (%) | DSC | TGA | | 1st cooling | 2nd heating | Temperature at 5% mass loss (°C) | | 1st peak | 2nd peak | 1st peak | 2nd peak | | Enthalpy (J/g) | Onset T (°C) | Peak T (°C) | Enthalpy (J/g) | Enthalpy (J/g) | Onset T (°C) | Peak T (°C) | Enthalpy (J/g) | Crystallinity (%) |
| | 0 | 0 | 115 ± 0.2 | 117 ± 0.2 | 94 ± 1 | 0 | 152 ± 1 | 163 ± 2 | 91 ± 1 | 44 | 365 ± 2 | | 20 | 0 | 116 ± 0.3 | 118 ± 0.3 | 88 ± 1 | 0 | 153 ± 1 | 164 ± 1 | 87 ± 1 | 42 | 378 ± 1 | | 40 | 0.29 ± 0.03 | 119 ± 0.5 | 121 ± 0.7 | 83 ± 2 | 0.09 ± 0.02 | 156 ± 1 | 164 ± 1 | 85 ± 1 | 41 | 382 ± 4 | | 60 | 0.53 ± 0.03 | 121 ± 0.5 | 123 ± 0.5 | 80 ± 1 | 0.17 ± 0.03 | 157 ± 1 | 164 ± 1 | 81 ± 1 | 39 | 380 ± 1 | | 80 | 0.78 ± 0.05 | 122 ± 1.0 | 126 ± 0.5 | 80 ± 3 | 0.46 ± 0.03 | 156 ± 1 | 166 ± 1 | 79 ± 1 | 38 | 387 ± 1 | | 100 | 0.92 ± 0.02 | 130 ± 0.7 | 132 ± 0.9 | 78 ± 1 | 0.60 ± 0.13 | 154 ± 2 | 167 ± 1 | 71 ± 1 | 35 | 384 ± 3 |
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