Effect of Molecular Weight on Phase Transition of Polyethylene under High Pressure

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概要

• 論文の詳細を見る

• The effect of the molecular weight distribution which makes polyethylene (PE) behave as a multi-component system in the phase transition under high pressure suggested by the authors from thermal study was confirmed by an X-ray method. Fractionated PE crystallized into an extended-chain crystal (ECC) showed the equilibrium successive first-order phase transition of a one-component system. But a PE mixture of two different molecular weights or unfractionated PE crystallized into ECC showed continuous melting of hexagonal solid characteristic of the melting of binary or multi-component systems. PE crystallized into folded-chain crystal (FCC), on the other hand, showed no equilibrium transition. These results confirm our previous suggestion and it is concluded that only monodisperse ECC-PE can be regarded as a thermodynamically pure material.

• 社団法人応用物理学会の論文
• 1981-03-05

著者

• HIKOSAKA Masamichi

  Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University

関連論文

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• Melting and Solid-Solid Transition of Polyethylene under Pressure
• Solid-Liquid Phase Diagrams of n-Paraffin and Polyethylene
• Formation of Oriented Isotactic Polypropylene γ-Form Crystal through α-γ Transition
• Effect of Molecular Weight on Phase Transition of Polyethylene under High Pressure
• Growth Rate of Polyethylene Single Crystals at High Pressure
• Growth of Bulky Extended Chain Single Crystals of Polyethylene
• Direct Observation of Morphology and Growth Rate of Extended Chain Single Crystals of Polyethylene

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