Halimatul Syahirah Mohamad
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Halimatul Syahirah Mohamad has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Ab Wahab Mohd Kahar
School of Materials Engineering, University Malaysia Perlis, 02600, Arau, Perlis, Malaysia
1 shared publication - Anna Przybył
Department of Physics, Czestochowa University of Technology, Armii Krajowej 19, 42-200 Czestochowa, Poland
1 shared publication - Elammaran Jayamani
Swinburne University of Technology Sarawak
1 shared publication - Hanafi Ismail
Universiti Sains Malaysia
1 shared publication - Izabela Wnuk
Czestochowa University of Technology, Department of Physics, 19 Armii Krajowej Av., 42-200 Czestochowa, Poland
1 shared publication - Przemysław Postawa
Department of Technology and Automation, Faculty of Mechanical Engineering, Czestochowa University of Technology, Armii Krajowej 21 St., 42-201 Czestochowa, Poland
1 shared publication
Latest Publications
- Open Access
Effect of Sago Starch Modifications on Polystyrene/Thermoplastic Starch Blends
The preparation of polystyrene/thermoplastic starch (PS/TPS) blends was divided into three stages. The first stage involved the preparation of TPS from sago starch. Then, for the second stage, PS was blended with TPS to produce a TPS/PS blend. The ratios of the TPS/PS blend were 20:80, 40:60, 60:40, and 80:20. The final stage was a modification of the composition of TPS/PS blends with succinic anhydride and ascorbic acid treatment. Both untreated and treated blends were characterized by their physical, thermal, and surface morphology properties. The obtained results indicate that modified blends have better tensile strength as the adhesion between TPS and PS was improved. This can be observed from SEM micrographs, as modified blends with succinic anhydride and ascorbic acid had smaller TPS dispersion in PS/TPS blends. The micrograph showed that there was no agglomeration and void formation in the TPS/PS blending process. Furthermore, modified blends show better thermal stability, as proved by thermogravimetric analysis. Water uptake into the TPS/PS blends also decreased after the modifications, and the structural analysis showed the formation of a new peak after the modification process.
Open AccessEffect of Sago Starch Modifications on Polystyrene/Thermoplastic Starch Blends
The preparation of polystyrene/thermoplastic starch (PS/TPS) blends was divided into three stages. The first stage involved the preparation of TPS from sago starch. Then, for the second stage, PS was blended with TPS to produce a TPS/PS blend. The ratios of the TPS/PS blend were 20:80, 40:60, 60:40, and 80:20. The final stage was a modification of the composition of TPS/PS blends with succinic anhydride and ascorbic acid treatment. Both untreated and treated blends were characterized by their physical, thermal, and surface morphology properties. The obtained results indicate that modified blends have better tensile strength as the adhesion between TPS and PS was improved. This can be observed from SEM micrographs, as modified blends with succinic anhydride and ascorbic acid had smaller TPS dispersion in PS/TPS blends. The micrograph showed that there was no agglomeration and void formation in the TPS/PS blending process. Furthermore, modified blends show better thermal stability, as proved by thermogravimetric analysis. Water uptake into the TPS/PS blends also decreased after the modifications, and the structural analysis showed the formation of a new peak after the modification process.