| dc.creator |
Ndazi, Bwire S. |
|
| dc.date |
2016-03-11T10:13:13Z |
|
| dc.date |
2016-03-11T10:13:13Z |
|
| dc.date |
2012 |
|
| dc.date.accessioned |
2018-03-27T08:36:46Z |
|
| dc.date.available |
2018-03-27T08:36:46Z |
|
| dc.identifier |
Ndazi, B.S., 2012. Evaluation of Physical and Mechanical Properties of Polylactide/Rice Hull Filled Composite Plates. Polymers from Renewable Resources, 3(3), p.101. |
|
| dc.identifier |
http://hdl.handle.net/123456789/863 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/2739 |
|
| dc.description |
Full text available at http://search.proquest.com/openview/c7733198d14fc2d143546a76161a5466/1?pq-origsite=gscholar |
|
| dc.description |
The influences of rice hull modification and content on the physical and mechanical
properties of the polylactide (PLA) composite plates have been investigated in
this paper. The rice hull was prepared by soda cooking at 170°C for 60 min and
by crushing with a hammer miller. The mixture of the PLA and the rice hull was
compounded in the extruder in the presence of fixed amounts of maleic anhydride
and dicumyl peroxide. This was followed by compression moulding of the mixture
under vacuum for 5 minutes in the Fortune Press to produce approximately 2 mm
thick composite plates. The composite plates produced were subjected to flexural
and tensile tests using the Instron while the morphology of the fractured surfaces
was investigated by scanning electron microscopy. The results revealed that
crushed and soda cooked rice hulls both acted predominantly as rigid fillers in
the PLA matrix. Their presence did not impart any improvement of the strength of
the composite plates. However, the tensile and flexural moduli of the composite
plates were found to improve up to 0.46 and 1.1 GPa, respectively, due to addition
of the rice hull fillers. The composite plates made of the rice hull pulps generally
exhibited higher flexural properties than those produced from ground rice hulls as
demonstrated by statistical analysis. This was due to enhancement of chemical
interaction between the chemically modified rice hulls and the PLA matrix as also
revealed on the nature of the fractured surfaces by SEM. The tendency of the
composite plates to exhibit brittle failures was demonstrated by abrupt tensile
fractures at lower strains |
|
| dc.language |
en |
|
| dc.publisher |
RAPRA JOURNALS |
|
| dc.subject |
Compositeplates |
|
| dc.subject |
Mechanicalproperties |
|
| dc.subject |
Polylactide |
|
| dc.subject |
Physical properties |
|
| dc.subject |
Rice hull pulps |
|
| dc.title |
Evaluation of Physical and Mechanical Properties of Polylactide/Rice Hull Filled Composite Plates |
|
| dc.type |
Journal Article |
|