Physicochemical properties of organoclay filled polylactic acid/natural rubber blend bionanocomposites

Bitinis, Natacha; Verdejo, Raquel; Maya, Eva M.; Espuche, Éliane; Cassagnau, Philippe; López–Manchado, Miguel A.

doi:10.1016/j.compscitech.2011.11.018

Cited by 114 publications

(89 citation statements)

References 35 publications

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“…Hence, to improve compatibility and to stabilize the immiscible rubber blends, compatibilization using organic molecules, block copolymers, or inorganic solid particles is often required [16]. Among all these alternatives, the addition of inorganic nanofiller to the blend is very promising due to its simplicity and the possibility of dualfunctionality using added filler as a reinforcement agent or compatibilizer in the blend matrices.…”

Section: Introductionmentioning

confidence: 98%

“…The utilization of inorganic fillers for NR/EPDM has already been applied in previous studies. Previous examples of inorganic fillers are rice husk ash, silica [24,32], carbon black [16,20,[33][34][35], titania nanoparticles [22], organo-modified Cloisite nanoclay [19], and more. However, to the best of our knowledge, there are still limited references available for NR/EPDM rubber blend or other polymeric rubber blend nanocomposites filled with graphene nanoplatelets [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

“…Over the past few years, many researchers have employed natural rubber (NR) and ethylene-propylenediene-monomer (EPDM) synthetic rubber for the preparation of elastomeric blends [16][17][18][19][20][21][22][23]. Vulcanized NR/ EPDM blend systems have been extensively studied because of their superior performance in tire application, as well as a significant improvement in heat and ozone resistance [22].…”

Section: Introductionmentioning

confidence: 99%

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Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

et al. 2015

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The facile approach of non-covalent surface treatment utilizing poly(ethyleneimine) (PEI) polymer was applied to modify graphene nanoplatelets (GNPs). The effects of surface modification and various GNPs-PEI loadings to cure characteristic, mechanical, physical, and morphological properties of natural rubber (NR)/ethylenepropylene-diene-monomer (EPDM) blend nanocomposites were studied and compared to the unfilled NR/EPDM blend and blends filled with unmodified GNPs at similar loadings. We found that the modification of GNPs surface significantly influences the properties of NR/EPDM blends. The addition of GNPs significantly improved the blend's processability, offering approximately a 104.30 % increase in tensile strength obtained with the addition of 5.00 wt% GNPs-PEI. A reduced swelling index of Q f /Q g in parallel with an increase in modified GNPs-PEI content revealed enhancements in terms of rubber-filler interactions between the NR/EPDM matrix and GNPs. These findings were further supported by X-ray diffraction, differential scanning calorimetry, thermogravimetry analysis, and fracture morphology by scanning electron microscope.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

et al. 2015

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“…In bionanocomposites, glass transition temperature and crosslink density are higher than the base matrix, and the vapour and UV barrier can also improve with nanoparticles [14]. Bionanocomposites that simultaneously exhibit the controlled release capacity of an antimicrobial extract are gaining interest in active antimicrobial food biopackaging applications [15].…”

Section: Introductionmentioning

confidence: 99%

A combination of three surface modifiers for the optimal generation and application of natural hybrid nanopigments in a biodegradable resin

et al. 2016

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Our purpose was to improve the thermal, mechanical, and optimal properties of an epoxy bioresin using optimum hybrid natural pigments previously synthetized in our lab. Then, we searched the best combinations of factors in the synthesis of natural hybrid nanopigments, and then incorporated them into the bioresin. We combined three structural modifiers in the nanopigment synthesis, surfactant, coupling agent (silane) and a mordant salt (alum), selected to replicate mordant textile dyeing with natural dyes.We used Taguchi's design L8 to seek final performance optimisation. We selected three natural dyes, chlorophyll, beta-carotene and beetroot extract, and used two laminar nanoclay types, montmorillonite, and hydrotalcite. The thermal, mechanical and colorimetric characterisation of the composite obtained by mixing natural hybrid nanopigments (bionanocomposite) was made. The natural dye interactions with both nanoclays improved the natural dyes and bioresin's thermal stabilities, colour performance and UV-VIS light exposure stability. The best bionanocomposite materials were found by using an acidic pH [3][4] environment, and modifying nanoclays with mordant and surfactant during the nanopigment synthesis process.

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“…Nevertheless, the immiscibility of polymeric constituents in the blends resulting from the polarlity difference could lead the finishing product having poor mechanical properties. [1,8] Hence, the compatibilizer made from graft copolymer was required to improve the phase morphology in these blends such as natural rubber-g-glycidyl methacyrlate (NR-g-GMA), [9] natural rubber-g-poly (methyl methacrylate) (NR-g-PMMA) [10] and PLA-NR-PLA triblock copolymer. [11] Therefore, the aim of this work was to synthesize the NR-graft-PLA (NR-PLA) used as a compatibilizer for PLA/NR blends.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Natural Rubber‐graft‐Poly(lactic acid) Used as a Compatibilizer for Poly(lactic acid)/NR Blends

Sookprasert

Hinchiranan

2015

Macromolecular Symposia

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Summary: Poly(lactic acid) (PLA) is a biodegradable plastic with good properties in terms of high tensile strength and high tensile modulus, but the brittleness and low impact strength behavior limit its applications. To enhance the impact strength of PLA, natural rubber (NR) with excellent elastic property should be applied to PLA. However, the polarity difference of these constituents leads the incompatibility resulting in poor mechanical properties of PLA/NR blends. Thus, the chemical modification of NR to increase its polarity is required. This research aimed to synthesize NR-graft-PLA (NR-PLA) as a compatibilizer for PLA/NR blends. There were 2 steps to prepare NR-PLA compatibilizer. Firstly, NR was functionalized by various maleic anhydride (MAH) contents (5-20 phr) to produce NR-MAH having higher polarity than NR. Then, NR-MAH was grafted with PLA via esterification using 4-dimethyaminopyridine (DMAP) as a catalyst. The structural characterization of the NR-MAH and NR-PLA was conducted by FT-IR and 1 H NMR spectrooscopy. This was observed that the increase in the MAH contents increased the amount of grafted MAH in the NR-MAH structure. The higher grafted MAH content induced the greater efficiency for grafting PLA in preparation of NR-PLA. The effects of DMAP, NR/PLA wt ratio and temperature in the esterification step on the grafted PLA were investigated.

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Physicochemical properties of organoclay filled polylactic acid/natural rubber blend bionanocomposites

Cited by 114 publications

References 35 publications

Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

Effects of poly(ethyleneimine) adsorption on graphene nanoplatelets to the properties of NR/EPDM rubber blend nanocomposites

A combination of three surface modifiers for the optimal generation and application of natural hybrid nanopigments in a biodegradable resin

Preparation of Natural Rubber‐graft‐Poly(lactic acid) Used as a Compatibilizer for Poly(lactic acid)/NR Blends

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