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- W61663923 abstract "In this study, the injection moulding processability of polylactic acid (PLA) and lowdensity polyethylene (LDPE) were investigated with the aid of Moldflow ® software. The effects of the process conditions for both polymeric materials were studied and compared by varying the process parameters. PLA was claimed to be one of the biodegradable polymers which would replace for most of the non-biodegradable petrochemical-derived monomers. Plastic spoon (PLSN) design was selected in determine the processability for PLA (PLSN001) and LDPE (PLSN002). The optimum processing behaviour for both work piece designs was characterized according to injection temperature and pressure, mould temperature, volumetric shrinkage and frozen layer fraction. As conclusion, the simulation outcomes showed PLSN001 required longer fill time, higher injection temperature and pressure due to its high viscosity. However, PLSN002 possessed semicrystalline properties exhibited higher volumetric shrinkages as compared to PLSN001 which possessed amorphous properties. This was due to the higher transition of specific volume and extensive crystallization occurred in PLSN002 upon cooling. Besides that, PLSN001 exhibited higher TPW (37.525 g) as compared to PLSN002 (27.2341 g) due to the differences of compressibility and molten-solid density in both polymeric materials. Moldflow ® simulation analyses also showed PLSN001 exhibited higher FLFT corresponds to the moulding period compared to PLSN002 due to its higher viscosity in PLA. The higher differences in mould temperature and fresh injected molten polymer temperature led to higher heat transfer and thus higher frozen layer fraction. In order to achieve stable and economical production, both PLSN001 and PLSN002 required at least 30 s holding time." @default.
- W61663923 created "2016-06-24" @default.
- W61663923 creator A5035654234 @default.
- W61663923 date "2012-08-21" @default.
- W61663923 modified "2023-09-27" @default.
- W61663923 title "Injection Moulding Processing Analysis of Polylactic Acid And Low-Density Polyethylene Plastic Spoon" @default.
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