The study of glycerol plasticized thermoplastic sago starch
Thermoplastic sago starch (TPSS) was produced by plasticizing with glycerol through melt blending before being compression moulded. The investigated TPSS was prepared at glycerol/starch weight fraction of 40/60, 35/65 and 30/70. The functional groups composition, tensile strength, density, moistu...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications, Switzerland
2012
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/26637/1/AMR.576.289_ICAMME_2012.pdf http://irep.iium.edu.my/26637/ http://www.scientific.net/AMR.576.289 |
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| Institution: | Universiti Islam Antarabangsa Malaysia |
| Language: | English |
| Summary: | Thermoplastic sago starch (TPSS) was produced by plasticizing with glycerol through
melt blending before being compression moulded. The investigated TPSS was prepared at
glycerol/starch weight fraction of 40/60, 35/65 and 30/70. The functional groups composition,
tensile strength, density, moisture content and water absorption were evaluated and compared at
different glycerol/starch ratio. The compatibility of the glycerol as the plasticizer in the TPSS was
proven by Fourier transform infrared spectroscopy (FTIR) where glycerol could form stable
hydrogen bond with sago starch. This preliminary study demonstrated that the stress at maximum
load was only applicable for lower glycerol/starch ratio of 30/70. The density of TPSS was
inversely proportional to the increment of glycerol/starch ratio whereas moisture content and water
absorption had opposite relationship. |
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