Comparison of polylactide/nano-sized calcium carbonate and polylactide/montmorillonite composites: Reinforcing effects and toughening mechanisms

Jiang, Long; Zhang, Jinwen; Wolcott, Michael P.

doi:10.1016/j.polymer.2007.11.001

Cited by 371 publications

(262 citation statements)

References 42 publications

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“…Fibrillation of the matrix resulted from these observed shear yielding and the two phase interface became blurry, which would absorb more energy during impact test. 28 This result may be attributed to the heterogeneous nucleation effect of TMC-328 and ZnO pillared organic saponite which increased the crystallization of PLA with a synergistic effect. Figure 6 showed a TEM image of PLA/ZnO pillared organic saponite.…”

Section: 폴리머 제38권 제3호 2014년mentioning

confidence: 99%

Properties, Structure and Crystallization of Poly Lactic Acid/Zinc Oxide Pillared Organic Saponite Nanocomposites

Zhen¹,

Sun²

2014

Polymer Korea

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ZnO pillared saponite was synthesized via a microwave hydrolysis method. To enhance interfacial compatibility between zinc oxide (ZnO) pillared saponite and poly lactic acid (PLA), ZnO pillared organic saponite was prepared by intercalation modification of cetyltrimethylammonium bromide. Moreover, PLA/ZnO pillared organic saponite nanocomposites were prepared by melting processing. The microstructure analysis of PLA/ZnO pillared organic saponite nanocomposites showed that ZnO pillared organic saponite was exfoliated and homogeneouslydispersed in PLA matrix. The property results showed that ZnO pillared organic saponite improved the mechanical properties and thermal stabilities of PLA/ZnO pillared organic saponite nanocomposites. Differential scanning calorimetry (DSC) demonstrated that ZnO pillared organic saponite restrained the appearance of cold crystallization, lowered the glass transition temperature and melting temperature of PLA, and improved the crystallinity of PLA. The results demonstrated that ZnO pillared organic saponite had a good interfacial compatibility and heterogeneous nucleation effect in PLA matrix, and also played an active role in accelerating the crystallization process of PLA.

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Section: 폴리머 제38권 제3호 2014년mentioning

confidence: 99%

Properties, Structure and Crystallization of Poly Lactic Acid/Zinc Oxide Pillared Organic Saponite Nanocomposites

Zhen¹,

Sun²

2014

Polymer Korea

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“…In contrast, after adding 10-15 phr TiO 2 , many fibrils as a result of crazing of PLLA matrix can be clearly observed on the whole surface (Figure 5b and 5c), indicating that the interfaciallocalized nano-TiO 2 particles effectively facilitate the deformation of PLLA matrix through crazing mechanism. Moreover, these highly stretched fibrils can prevent the crack initiation and propagation, allowing for a considerable plastic deformation to develop [48]. As a result, substantial energy is consumed, leading to the high impact toughness.…”

Section: Toughening Mechanismmentioning

confidence: 99%

Selective localization of titanium dioxide nanoparticles at the interface and its effect on the impact toughness of poly(L-lactide)/poly(ether)urethane blends

Xiu¹,

Bai²,

Huang³

et al. 2013

Express Polym. Lett.

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Inorganic nanofillers are often added into polymer/elastomer blends as a third component to modify their performance. This work aims to clarify the role of interface-localized spherical nanoparticles in determining the impact toughness of polymer blends. The selective distribution of titanium dioxide (TiO2) nanoparticles in poly(L-lactide)/poly(ether) urethane (PLLA/PU) blends was investigated by using scanning electron microscope. It is interesting to find that, regardless of the method of TiO2 introduction, nano-TiO2 particles are always selectively localized at the phase interface between PLLA and PU, leading to a significant improvement in notched Izod impact toughness. The moderately weakened interfacial adhesion induced by the interfacially-localized nano-TiO2 particles is believed to be the main reason for the largely enhanced impact toughness

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“…The mechanical properties were found to be significantly improved by the addition of fine CaCO 3 particles [15]- [20]. Large scale plastic deformation was found to be initiated by interfacial debonding and the subsequent relaxation of triaxial tensile stress [21]. Since PLA is well known for its difficulty to crystalline, adding CaCO 3 could have an impact on its properties as well as potential applications replacing petrochemical based plastics [14], [22].…”

mentioning

confidence: 99%

Mechanical Properties of Hydrophilicity Modified CaCO3-Poly (Lactic Acid) Nanocomposite

Nekhamanurak¹,

Patanathabutr²,

Hongsriphan³

2012

IJAPM

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Abstract-The goal of this work is to modify surface of calcium carbonate nanoparticles with silica (CaCO 3 @SiO 2 ) via sol-gel process, and to investigate the influence of CaCO 3 @SiO 2 on mechanical properties and fracture behavior of poly(lactic acid) nanocomposite. Modified CaCO 3 @SiO 2 nanoparticles were prepared with different Si:Ca ratios. It is found that the Si/Ca wt% was increased with respect to the Si:Ca mole ratio used in the reaction. Incorporating CaCO 3 @SiO 2 of 5 wt% increased elastic modulus, %elongation at break and notched impact strength of PLA nanocomposites. These properties of hydrophilic-modified CaCO 3 -poly(lactic acid) nanocomposite was increased with respect to the increasing of SiO 2 content on the surface of CaCO 3 nanoparticles. This implies that better compatibility between PLA matrix and nano-fillers was achieved after modification surface of CaCO 3 with SiO 2 layers.Index Terms-Nanocomposite, poly(lactic acid), calcium carbonate nanoparticle, silica, sol-gel process.

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Comparison of polylactide/nano-sized calcium carbonate and polylactide/montmorillonite composites: Reinforcing effects and toughening mechanisms

Cited by 371 publications

References 42 publications

Properties, Structure and Crystallization of Poly Lactic Acid/Zinc Oxide Pillared Organic Saponite Nanocomposites

Properties, Structure and Crystallization of Poly Lactic Acid/Zinc Oxide Pillared Organic Saponite Nanocomposites

Selective localization of titanium dioxide nanoparticles at the interface and its effect on the impact toughness of poly(L-lactide)/poly(ether)urethane blends

Mechanical Properties of Hydrophilicity Modified CaCO3-Poly (Lactic Acid) Nanocomposite

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