Reactive compatibilization of PA12/plasticized starch blends: Towards improved mechanical properties

Teyssandier, Fabien; Cassagnau, Philippe; Gérard, Jean‐François; Mignard, Nathalie

doi:10.1016/j.eurpolymj.2011.09.017

Cited by 26 publications

(22 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Polylactic acid (PLA) is an aliphatic polyester, biodegradable, compostable, and thermoplastic . This material presents good mechanical properties, and it is employed on industrial applications such as biocompatible/bioadsorbable packages, medical disposables, films, and fibers . PLA can be degraded by hydrolysis of ester bonds.…”

Section: Introductionmentioning

confidence: 99%

Hyperbranched polyester polyol modified with polylactic acid

Mesias

Murillo

2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study the modification of a hyperbranched polyester polyol of second generation (HBP2G) with polylactic acid (PLA) was carried out. The proportions employed of PLA were: 10 (HBP2G90), 25 (HBP2G75), 40 (HBP2G60), and 55 wt % (HBP2G45). The materials obtained were characterized by acid value, hydroxyl value, infrared, nuclear magnetic resonance (NMR), chromatography exclusion size (SEC), dynamic light scattering, thermogravimetric, differential scanning calorimetry, and rheology analyses. The analyses of the acid values and hydroxyl values showed that the reaction between HBP2G and PLA occurred. The greater modification degree was 92.00%. The NMR spectrum shows that evidently the PLA was grafted onto the HBP2G. The SEC analysis revealed that all samples presented values of average molecular weight (M n ) and weight average molecular weight (M w ) higher than the HBP2G. The thermal stability of the materials increased with respect to HBP2G and it was independent of the modification degree.

show abstract

Section: Introductionmentioning

confidence: 99%

Hyperbranched polyester polyol modified with polylactic acid

Mesias

Murillo

2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The morphology of a polymer blend depends on the rheological properties of components (viscosity ratio and elasticity ratio), volume fractions, and interfacial tension . To reduce the interfacial tension, it is common to add compatibilizers …”

Section: Introductionmentioning

confidence: 99%

Rheology and morphology of polyester/thermoplastic flour blends

Démé

Peuvrel‐Disdier

Vergnes

2013

J of Applied Polymer Sci

View full text Add to dashboard Cite

International audienceTwo maize flours (standard and waxy grades) were plasticized in an internal mixer with a constant amount of water and two glycerol contents. The resulting thermoplastic flours (TPFs) were characterized in dynamic oscillatory shear and creep/recovery rheometry. They displayed two different behaviors: the viscoelastic behavior of a high-molecular-weight polymer for the first one and a gel-like behavior for the second one. The TPFs were then mixed with a copolyester [poly(butylene adipate-terephtalate)]. All of the blends contained the same volume fractions and were prepared with the same mixing conditions. The morphology and rheological behavior of each blend were characterized. Different morphologies, ranging from cocontinuous to nodular, were observed. In fixed mixing conditions, the blend morphology was shown to be governed by the rheological behavior of the starchy phase and the plasticizer content. The gel-like behavior of the second TPF seemed to prevent droplet coalescence; this led to a very fine dispersion. The rheological behavior of each blend appeared to be linked to both the morphology and the rheological behavior of the two phases

show abstract

“…This type of blend, where the dispersed phase and the matrix possess a completely different viscoelastic behavior, has already been reported in two of our previous works (Teyssandier et al, 2011;Teyssandier et al, 2012). In these works, blends of polyamide12 (PA12) and thermoplastic Starch (TPS) with the same ratio of polyamide12/plasticized starch (70 : 30) were studied.…”

Section: Resultsmentioning

confidence: 99%

“…Polymer Processing XXVII (2012) tradiction with a previous study (Teyssandier et al, 2011) realized on polyamide 12/plasticized starch blend where a liquid epoxy resin (DGEBA D.E.R. The shift of the polypropylene crystallization temperature can be attributed to the influence of epoxy resin on the promotion of primary nucleation of the spherulites.…”

Section: Resultsmentioning

confidence: 99%

Morphology and Mechanical Properties of Compatibilized Bio-sourced PA/Plasticized Starch Grafted PP Ternary Polymer Blends

Teyssandier

Cassagnau

Gérard

et al. 2012

International Polymer Processing

Self Cite

View full text Add to dashboard Cite

Morphology and Mechanical Properties of Compatibilized Bio-sourced PA/Plasticized Starch Grafted PP Ternary Polymer BlendsPolymer blends of biosourced polyamide (Rilsan XD) and thermoplastic starch grafted polypropylene (LAB4270) were processed by means of a co-rotating twin-screw extruder, using a solid epoxy resin (D.E.R. 664UE) as a compatibilizer. Morphologies as well as rheological, thermal and mechanical properties of the blends were characterized. The morphology of the reference blend was characterized by nodules of the micron order of magnitude of the dispersed phase (LAB4270) embedded in the polyamide matrix. Even though the morphologies of the blends were not impacted by the addition of the epoxy resin, the mechanical properties as well as the impact resilience were proved to be enhanced. The thermal properties of the blends were as well influenced. A shift of the crystallization temperatures and a decrease of the crystallization enthalpies of both the polypropylene and the PA XD were observed. Thus the addition of the epoxy resin as compatibilizer had proved to be truly effective to obtain a material mostly biosourced with mechanical properties that tend towards combined optimal properties of the different components of the blend.

show abstract

Reactive compatibilization of PA12/plasticized starch blends: Towards improved mechanical properties

Cited by 26 publications

References 42 publications

Hyperbranched polyester polyol modified with polylactic acid

Hyperbranched polyester polyol modified with polylactic acid

Rheology and morphology of polyester/thermoplastic flour blends

Morphology and Mechanical Properties of Compatibilized Bio-sourced PA/Plasticized Starch Grafted PP Ternary Polymer Blends

Contact Info

Product

Resources

About