Ojijo, Vincent ORay, Suprakas SSadiku, R2014-09-122014-09-122014-05Ojijo, 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 596-6081438-7492http://onlinelibrary.wiley.com/doi/10.1002/mame.201300306/pdfhttp://hdl.handle.net/10204/7668Copyright: 2014 Wiley. This is an ABSTRACT ONLY. The definitive version is published in Macromolecular Materials and Engineering, vol. 299(5), pp 596-608Polylactide (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.enImproved multiple propertiesNanocompositesOrganoclayPolylactide/poly[(butylene succinate)-co-adipate] blendsReactive processingArticleOjijo, 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/10204/7668Ojijo, 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/10204/7668Ojijo 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.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 -