An investigation of co-crystallization in LDPE/HDPE blends using DSC and TREF
| Autor: | Claudia A. Fonseca, Ian R. Harrison |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
chemistry.chemical_classification
Materials science technology industry and agriculture Polymer Polyethylene Condensed Matter Physics Endothermic process law.invention chemistry.chemical_compound Low-density polyethylene Differential scanning calorimetry chemistry Chemical engineering law Phase (matter) Polymer chemistry High-density polyethylene Physical and Theoretical Chemistry Crystallization Instrumentation |
| Zdroj: | Thermochimica Acta. 313:37-41 |
| ISSN: | 0040-6031 |
| Popis: | A number of differential scanning calorimetry (DSC) experiments were performed to investigate the melting behavior of blends of low density polyethylene (LDPE) and high density polyethylene (HDPE). Results revealed three endothermic peaks which suggested that, upon fast cooling, a “co-crystalline” phase is formed. The same feature was found using Temperature Rising Elution Fractionation (TREF), which fractionates semi-crystalline polymers based on relative crystallizability of molecules. Isolation of the “co-crystallized” fraction was possible using TREF in a preparative mode. Analytical TREF and DSC were then used to identify polymeric components in the “co-crystalline” phase. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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