dc.contributor.author |
Ojijo, Vincent O
|
|
dc.contributor.author |
Ray, Suprakas S
|
|
dc.contributor.author |
Sadiku, R
|
|
dc.date.accessioned |
2014-09-12T10:00:49Z |
|
dc.date.available |
2014-09-12T10:00:49Z |
|
dc.date.issued |
2014-05 |
|
dc.identifier.citation |
Ojijo, V., Ray, S.S. and Sadiku, R. 2014. Concurrent Enhancement of Multiple Properties in Reactively Processed Nanocomposites of Polylactide/Poly[(butylene succinate)-co-adipate] Blend and Organoclay. Macromolecular Materials and Engineering, vol. 299(5), pp 596-608 |
en_US |
dc.identifier.issn |
1438-7492 |
|
dc.identifier.uri |
http://onlinelibrary.wiley.com/doi/10.1002/mame.201300306/pdf
|
|
dc.identifier.uri |
http://hdl.handle.net/10204/7668
|
|
dc.description |
Copyright: 2014 Wiley. This is an ABSTRACT ONLY. The definitive version is published in Macromolecular Materials and Engineering, vol. 299(5), pp 596-608 |
en_US |
dc.description.abstract |
Polylactide (PLA) and poly[(butylene succinate)-co-adipate] (PBSA) were reacted by being blended in a batch mixer in the presence of a chain extender, triphenyl phosphite (TPP), and two different types of organically modified clays—a montmorillonite clay (C20A) and a synthetic mica (MEE)—to enhance the thermal stability, impact toughness, and barrier properties of the PLA. An accelerated increase in the torque during processing indicated catalyzed chain-extension reactions in the clay-based compatibilized blends. The rate and extent of the increase in the chain extension/coupling were dependent on the type of organic surfactant used to modify the pristine clays. Enhanced chain extension/coupling and char formation resulted in dramatic thermal stability increases of 17 and 26 8C for composites with 2 and 6wt% C20A loadings, respectively. Similarly, the oxygen and water-vapor permeabilities were improved with the addition of the clays. At 4wt% MEE loading, the oxygen and water-vapor permeabilities were reduced by 60 and 50%, respectively. Unlike the MEE-based blends, C20A-based compatibilized blends resulted in higher toughness than the neat PLA due to the lesser crystallinity of the PLA component and enhanced chain extensions/coupling in the C20A-based samples. Therefore, this work demonstrates the possibility of enhancing the thermal stability, toughness, and barrier properties of PLA in a one-stage process through reactive blending with PBSA in the presence of clays. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Wiley |
en_US |
dc.relation.ispartofseries |
Workflow;13387 |
|
dc.subject |
Improved multiple properties |
en_US |
dc.subject |
Nanocomposites |
en_US |
dc.subject |
Organoclay |
en_US |
dc.subject |
Polylactide/poly[(butylene succinate)-co-adipate] blends |
en_US |
dc.subject |
Reactive processing |
en_US |
dc.title |
Concurrent Enhancement of Multiple Properties in Reactively Processed Nanocomposites of Polylactide/Poly[(butylene succinate)-co-adipate] Blend and Organoclay |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Ojijo, V. O., Ray, S. S., & Sadiku, R. (2014). Concurrent Enhancement of Multiple Properties in Reactively Processed Nanocomposites of Polylactide/Poly[(butylene succinate)-co-adipate] Blend and Organoclay. http://hdl.handle.net/10204/7668 |
en_ZA |
dc.identifier.chicagocitation |
Ojijo, Vincent O, Suprakas S Ray, and R Sadiku "Concurrent Enhancement of Multiple Properties in Reactively Processed Nanocomposites of Polylactide/Poly[(butylene succinate)-co-adipate] Blend and Organoclay." (2014) http://hdl.handle.net/10204/7668 |
en_ZA |
dc.identifier.vancouvercitation |
Ojijo VO, Ray SS, Sadiku R. Concurrent Enhancement of Multiple Properties in Reactively Processed Nanocomposites of Polylactide/Poly[(butylene succinate)-co-adipate] Blend and Organoclay. 2014; http://hdl.handle.net/10204/7668. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Ojijo, Vincent O
AU - Ray, Suprakas S
AU - Sadiku, R
AB - Polylactide (PLA) and poly[(butylene succinate)-co-adipate] (PBSA) were reacted by being blended in a batch mixer in the presence of a chain extender, triphenyl phosphite (TPP), and two different types of organically modified clays—a montmorillonite clay (C20A) and a synthetic mica (MEE)—to enhance the thermal stability, impact toughness, and barrier properties of the PLA. An accelerated increase in the torque during processing indicated catalyzed chain-extension reactions in the clay-based compatibilized blends. The rate and extent of the increase in the chain extension/coupling were dependent on the type of organic surfactant used to modify the pristine clays. Enhanced chain extension/coupling and char formation resulted in dramatic thermal stability increases of 17 and 26 8C for composites with 2 and 6wt% C20A loadings, respectively. Similarly, the oxygen and water-vapor permeabilities were improved with the addition of the clays. At 4wt% MEE loading, the oxygen and water-vapor permeabilities were reduced by 60 and 50%, respectively. Unlike the MEE-based blends, C20A-based compatibilized blends resulted in higher toughness than the neat PLA due to the lesser crystallinity of the PLA component and enhanced chain extensions/coupling in the C20A-based samples. Therefore, this work demonstrates the possibility of enhancing the thermal stability, toughness, and barrier properties of PLA in a one-stage process through reactive blending with PBSA in the presence of clays.
DA - 2014-05
DB - ResearchSpace
DP - CSIR
KW - Improved multiple properties
KW - Nanocomposites
KW - Organoclay
KW - Polylactide/poly[(butylene succinate)-co-adipate] blends
KW - Reactive processing
LK - https://researchspace.csir.co.za
PY - 2014
SM - 1438-7492
T1 - Concurrent Enhancement of Multiple Properties in Reactively Processed Nanocomposites of Polylactide/Poly[(butylene succinate)-co-adipate] Blend and Organoclay
TI - Concurrent Enhancement of Multiple Properties in Reactively Processed Nanocomposites of Polylactide/Poly[(butylene succinate)-co-adipate] Blend and Organoclay
UR - http://hdl.handle.net/10204/7668
ER -
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en_ZA |