Microwave-assisted synthesis of polylactic acidDiol for polyurethane as biodegradable packaging material
Since its discovery, plastic has been a part of human life and is widely employed in our daily lives. Excessive use of plastic has raised pollution rates around the world, with plastic ending up in landfills or the sea, posing a threat to both terrestrial and aquatic life. Considering this proble...
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| Main Authors: | , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/95118/1/95118_Microwave-assisted%20synthesis%20of%20polylactic%20acidDiol.pdf http://irep.iium.edu.my/95118/ https://iopscience.iop.org/journal/1757-899X |
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| Institution: | Universiti Islam Antarabangsa Malaysia |
| Language: | English |
| Summary: | Since its discovery, plastic has been a part of human life and is widely employed in
our daily lives. Excessive use of plastic has raised pollution rates around the world, with plastic
ending up in landfills or the sea, posing a threat to both terrestrial and aquatic life. Considering
this problem, the widespread use of polyurethanes (PUs) in many industries has resulted in
unavoidable PUs pollution in everyday life. A reaction involving prepolymer, isocyanate, and
polyol can be used to make PUs. Petroleum-based polyol and vegetable oil-based polyol are the
two types of polyols available. Isocyanate will become the hard domain of the polymer in the
PUs polymer chain, while polyol will become the soft domain. Polylactic acid-diol is the
prepolymer used to make PU (PLA-diol). PLA-diol was previously made using a traditional
heating approach, which takes a long time. To overcome this traditional method, microwaveassisted synthesis is proposed to synthesize the PLA-diol. The synthesis process involved
synthesizing PLA-diol at different microwave power (450W – 900W) and at different reaction
time (1 hour – 2 hours). The peak of hydroxyl group in synthesized PLA-diol was characterized
via the Fourier Transform Infrared Spectroscopy (FTIR) characterization to determine the
functional groups of PLA-diol and gel permeation chromatography (GPC) characterization was
done to determine the molecular weight of PLA-diol. The resulting PLA-diol will then be used
to synthesis biodegradable PUs in the subsequence study |
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