Plasticizing poly(lactic acid) using epoxidized palm oil for environmental friendly packaging material = Peningkatan fleksibiliti poli(laktik asid) menggunakan minyak kelapa sawit terepoksi untuk aplikasi pembungkus mesra alam
Petrochemical based polymers used in packaging materials are causing various environmental problems. Therefore, biopolymers prepared from renewable sources have high potential to substitute the commercially available non-degradable polymer. Poly(lactic acid) (PLA) is one of the biodegradable polym...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Malaysian Analytical Sciences Society
2016
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/52766/ http://irep.iium.edu.my/52766/ http://irep.iium.edu.my/52766/ http://irep.iium.edu.my/52766/1/Fathilah_20_5_22%20%281%29.pdf |
| Summary: | Petrochemical based polymers used in packaging materials are causing various environmental problems. Therefore, biopolymers
prepared from renewable sources have high potential to substitute the commercially available non-degradable polymer.
Poly(lactic acid) (PLA) is one of the biodegradable polymers that can be used to substitute in the application of petrochemicalbased
polymers. Environmental friendly and biodegradable epoxidized palm oil (EPO) was used as plasticizer in this study and
it was incorporated into PLA matrix through solution blending method. The mechanical properties were determined through
three-point flexural test and tensile test. Tensile results revealed that the flexibility of PLA can be improved by the addition of
epoxidized palm oil (EPO) as plasticizer in the polymer. PLA/EPO blend at ratio 100:10 showed significant flexibility among
the other PLA/EPO blends. The thermal properties of neat PLA and PLA/EPO blends were characterized by using Differential
Scanning Calorimetry (DSC). The glass transition temperature (Tg) decreased by addition of plasticizer, indicated the chain
mobility of PLA increased in the PLA/EPO blends system. The improved flexibility of PLA by using EPO as plasticizer showed
that it has high potential to be used as environmental-friendly packaging material.
Barangan dari sumber yang boleh diperbaharui boleh mewujudkan satu platform untuk menggantikan polimer
berasaskan petroleum yang diketahui tidak mampu terbiodegradasi. Poli(laktik asid) (PLA) adalah antara polimer yang
boleh biodegradasi secara semula jadi dan dipercayai boleh menjadi pengganti bagi penggunaan polimer petrokimia.
Pemplastik yang terbiodegradasi boleh digunakan untuk meningkatkan fleksibiliti PLA. PLA/EPO telah dicampurkan dengan
nisbah tertentu dan sifat mekanikal dan haba bahan ini telah dikaji. Sifat mekanik polimer/pemplastik ditentukan melalui
ujian lenturan mekanik dan ujian tegangan. Hasil kajian tegangan bahan menunjukkan bahawa fleksibiliti PLA boleh
dipertingkatkan dengan penambahan minyak kelapa sawat terepoksi (EPO) sebagai pemplastik dalam polimer. Ia telah
membuktikan bahawa kandungan 100:10 PLA/EPO adalah nisbah yang paling sesuai untuk campuran PLA/EPO. Ciri – ciri
haba diperolehi dengan menggunakan Kalorimeter Pengimbasan Perbezaan (DSC). Pemplastik didapati mengurangkan suhu
peralihan kaca PLA. EPO didapati meningkatkan tekanan tegangan dan pemanjangan di dalam PLA/EPO. Peningkatan
fleksibiliti PLA menerusi penggunaan EPO membuktikan bahawa PLA/EPO boleh digunakan untuk pengunaan bungkusan
mesra alam |
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