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Liquid–liquid Phase Separation in a Polyethylene Blend Monitored by Crystallization Kinetics and Crystal-decorated Phase Morphologies by Shujun Wang; Changjiang Wu; Min-Qiao Ren; Ryan M. Van Horn; Matthew J. Graham; Charles C. Han; Erqiang Chen; Stephen Z.D. Cheng is a Materials Science article available to read on EtoBox.
What is Liquid–liquid Phase Separation in a Polyethylene Blend Monitored by Crystallization Kinetics and Crystal-decorated Phase Morphologies about?
A series of polyethylene (PE) blends consisting of a linear high density polyethylene (HDPE) and a linear low density polyethylene (LLDPE) with an octane-chain branch density of 120/1000 carbon was prepared at different concentrations. The two components of this set of blends possessed isorefractive indices, thus, making it difficult to detect their liquid-liquid phase separation via scattering techniques. Above the experimentally observed melting temperature of HDPE, T m 1⁄4 133 C, this series of blends can be considered to be in the liquid state. The LLDPE crystallization temperature was below 50 C; therefore, above 80 C and below the melting temperature of HDPE, a series of crystalline-amorphous PE blends could be created. A specifically designed two-step isothermal experimental procedure was utilized to monitor the liquid-liquid phase separation of this set of blends. The first step was to quench the system from temperatures of known miscibility and isothermally anneal them at a temperature higher than the equilibrium melting temperature of the HDPE for the purpose of allowing the phase morphology to develop from liquid-liquid phase separation. The second step was to quench the
Who reads Liquid–liquid Phase Separation in a Polyethylene Blend Monitored by Crystallization Kinetics and Crystal-decorated Phase Morphologies?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Shujun Wang; Changjiang Wu; Min-Qiao Ren; Ryan M. Van Horn; Matthew J. Graham; Charles C. Han; Erqiang Chen; Stephen Z.D. Cheng
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0032-3861)
- Published
- 2009
- Language
- EN
- Field
- Materials Science (Physical Sciences)