| Autor: |
Radin Siti Fazlina Nazrah Hirzin, Yahya, Rosiyah, Hassan, Aziz |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2018, Vol. 1985 Issue 1, p1-8, 8p |
| Abstrakt: |
The semi-rigid polyurethane (PU) film based on functionalized liquid natural rubber (FLNR) from cup lump rubber waste as the soft segment was prepared by one-shot and two-shot method. The hard segment consists with 4,4'- methylenebis-(phenylisocyanate) (MDI) and 1,4 butanediol (BDO). The urethane linkage formation was confirmed by FTIR with a N-H peak at 3317 cm-1 and disappearance NCO peak at 2262 cm-1. A rubber polyol as soft phase contributes a major implication in the polymer products and two-shot reaction was performed as better processable technique. The segmented interactions of polymer from solubility behaviour indicate stronger interaction between hard and soft segment of two-shot method compared to one-shot method preparation. The semi-rigid character of the PU with low polyol chain length and high soft phase domain favoured solubility in non-polar solvent (toluene and chloroform) and low polar solvent (THF). As for high polyol chain, it was insoluble in any solvent thus its high stability. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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