| Autor: |
Abdul Wahab, Mohamad Kahar, Ismail, Hanafi, Othman, Nadras |
| Předmět: |
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| Zdroj: |
Polymer-Plastics Technology & Engineering; May2011, Vol. 50 Issue 7, p748-753, 6p, 2 Black and White Photographs, 1 Chart, 4 Graphs |
| Abstrakt: |
Characterization of thermoplastic tapioca starch modified with citric acid (TPSCA) and its influence on the thermal analysis of high density polyethylene (HDPE)/natural rubber (NR)/thermoplastic tapioca starch (TPS) blends was investigated. Morphology and relative molecular weight of TPS and TPSCA were analyzed using scanning electron microscope (SEM) micrographs and high performance liquid chromatography (HPLC). TPSCA shows better plasticization as can be seen from SEM micrographs. The HDPE/NR/TPSCA blends exhibit the glass transition of NR shifted to higher temperature as compared to the HDPE/NR/TPS blends. This indicates better interaction between TPS-HDPE/NR as TPS is modified with citric acid (CA). The thermal behavior and water absorption of HDPE/NR/TPS blends were evaluated as a function of TPS loadings with and without modification with CA. The HDPE/NR/TPSCA blends exhibit better water resistance, which is attributed to a compatibilization effect that occurred in the HDPE/NR/TPSCA system as TPS was modified with CA. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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