dc.contributor.author |
Dhanushka, MKDT |
|
dc.contributor.author |
Kaushalya, RANC |
|
dc.contributor.author |
Samarasekara, AMPB |
|
dc.contributor.editor |
Sivahar, V |
|
dc.contributor.editor |
Sitinamaluwa, HS |
|
dc.date.accessioned |
2022-03-18T08:46:53Z |
|
dc.date.available |
2022-03-18T08:46:53Z |
|
dc.date.issued |
2019-01 |
|
dc.identifier.citation |
Dhanushka, M.K.D.T., Kaushalya, R.A.N.C., & Samarasekara, A.M.P.B. (2019). Development of polylactic acid (PLA) based biodegradable packaging materials
[Abstract]. In V. Sivahar & H.S. Sitinamaluwa (Eds.), Dreams to reality through innovative materials (p. 7). Department of Materials Science and Engineering, University of Moratuwa. |
en_US |
dc.identifier.uri |
http://dl.lib.uom.lk/handle/123/17395 |
|
dc.description.abstract |
The key purpose of packaging is to protect the contents or products from external
factors. Synthetic polymers do not degrade completely in nature after the usage and
create environmental issues. Therefore, there is a tendency to substitute such polymers
with natural polymers that are easily biodegraded and less likely to cause
environmental pollution.
The main objective of this research is to develop a biodegradable packaging material
based on Polylactic Acid (PLA) and locally extracted starch. Starch was extracted
from cassava tubers by crushing, blending and sedimentation processes. The extracted
product was characterized by Fourier Transform Infrared Spectroscopic technique
(FTIR). Experimental results indicated that 25 wt.% of starch could be extracted from
the cassava that was tested.
Biodegradable PLA and starch-based blends were prepared by adding starch as the
main additive. The dried starch was incorporated into the PLA and melt-blended using
laboratory scale internal mixer. A mixing process was performed for various starch
concentrations. The blended samples were then pressed to form thin sheets in
a hydraulic press. Soil burial test was performed to analyze the biodegradability of the
developed product. The tensile strength and elongation at break of the samples were
determined by tensile testing. Weight loss in starch-containing samples gradually
increased with time during the soil burial test. Experimental results also indicated that
biodegradability of the products increased as the starch content is increased. The
mechanical properties such as tensile strength and elongation also decreased as the
starch content increased. These results indicated that the addition of starch to PLA is
a better method to increase the biodegradability of the PLA -starch blends.
These developed biodegradable materials can be used as a sustainable material to
create safer environment. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Department of Materials Science and Engineering |
en_US |
dc.subject |
Biodegradable |
en_US |
dc.subject |
PLA |
en_US |
dc.subject |
Starch |
en_US |
dc.subject |
Packaging material |
en_US |
dc.title |
Development of polylactic acid (PLA) based biodegradable packaging materials |
en_US |
dc.type |
Conference-Abstract |
en_US |
dc.identifier.faculty |
Engineering |
en_US |
dc.identifier.department |
Department of Materials Science and Engineering |
en_US |
dc.identifier.year |
2019 |
en_US |
dc.identifier.conference |
Materials Engineering Symposium on Innovations for Industry 2019 |
en_US |
dc.identifier.place |
Katubedda |
en_US |
dc.identifier.pgnos |
p. 7 |
en_US |
dc.identifier.proceeding |
Dreams to reality through innovative materials |
en_US |
dc.identifier.email |
banduamp@gmail.com |
en_US |