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June 1, 1986Macromolecules

Morphology control of binary polymer mixtures by spinodal decomposition and crystallization. 1. Principle of method and preliminary results on PP/EPR

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Authors

NINobuyuki InabaYamagata UniversityKSKazuo SatoBaptist HospitalSSShyunichi Suzuki

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Implication

Experimental study demonstrates morphology control in polypropylene and rubber blends, indicating spinodal decomposition and crystallization effectively tailor polymer microstructure.

Key Points

  • To establish the principles of controlling blend morphology in binary polymer systems by coupling spinodal decomposition with subsequent crystallization.
  • Formulated binary polymer blends composed of semi-crystalline polypropylene (PP) and amorphous ethylene-propylene rubber (EPR).
  • Subjected the blend to controlled thermal profiles to induce liquid-liquid phase separation via spinodal decomposition.
  • Triggered crystallization of the polypropylene matrix to arrest phase growth and fix the resulting phase morphology.
  • Demonstrated that transient bicontinuous domain structures formed during spinodal decomposition can be effectively pinned by rapid crystallization of the matrix.
  • Showed that adjusting the quench timing and crystallization temperature enables systematic tuning of phase domain sizes and overall polymer microstructure.

Cite This Study

Inaba et al. (1986) studied this question.

synapsesocial.com/papers/6aa8cd60f51e533ee4f41590https://doi.org/10.1021/ma00160a036
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