Improving Impact Toughness of Polylactide/Ethylene-co-vinyl-acetate Blends via Adding Fumed Silica Nanoparticles: Effects of Specific Surface Area-dependent Interfacial Selective Distribution of Silica

Zhang, Tingting; Zhou, Meixi; Guo, Zhang; Zhao, Youbo; Han, Di; Xiu, Hao; Bai, Hongwei; Zhang, Qin; Fu, Qiang

doi:10.1007/s10118-021-2565-4

Cited by 13 publications

(9 citation statements)

References 67 publications

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“…Consequently, using nanofillers may be an attractive route for developing multiphase polymeric materials with a balanced stiffness‐toughness property. [ 2,20–29 ]…”

Section: Introductionmentioning

confidence: 99%

“…The PLA/EVA blend containing optimum levels of nanosilica exhibited considerably enhanced tensile toughness, elongation at break, and impact strength. Zhang et al [ 26 ] incorporated three types of SiO 2 with different specific surface areas into PLA/EVA (85/15) blend by melt blending. The SiO 2 nanoparticles with a low specific surface area had a stronger tendency to locate at the interface between PLA matrix and EVA dispersed phase as compared to those with a high specific surface area.…”

Section: Introductionmentioning

confidence: 99%

“…The SiO 2 nanoparticles with a low specific surface area had a stronger tendency to locate at the interface between PLA matrix and EVA dispersed phase as compared to those with a high specific surface area. [ 26 ] The interfacial localization of SiO 2 nanoparticles enhanced the impact toughness without the deterioration of strength and modulus. Toughening efficiency of nanofiller at the interface was increased with the specific surface area of SiO 2 .…”

Section: Introductionmentioning

confidence: 99%

“…For instance, the addition of nanofillers into toughened blends can further improve the morphology and dispersion state of the dispersed impact modifier domains through either selective localization within the matrix or at the interface between the matrix and impact modifier domains. [20][21][22][23][24][25][26][27] In the latter case, the nanoparticles can further promote the compatibilization process, with the consequence of a simultaneous improvement in stiffness and impact toughness of the resulting blend nanocomposite systems compared with the unfilled blend. Consequently, using nanofillers may be an attractive route for developing multiphase polymeric materials with a balanced stiffness-toughness property.…”

mentioning

confidence: 99%

“…Consequently, using nanofillers may be an attractive route for developing multiphase polymeric materials with a balanced stiffness-toughness property. [2,[20][21][22][23][24][25][26][27][28][29] There are several reports in the literature concerning the use of nanofillers in toughened PLA/EVA blends. Singla et al [24] prepared ternary nanocomposites of PLA/EVA (70:30) containing (0.4-9.1 wt%) of halloysite nanotubes (HNTs).…”

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confidence: 99%

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Physical, mechanical, viscoelastic, and morphological properties of poly(lactic acid)/ethylene‐co‐vinyl acetate blend reinforced with silicon carbide nanoparticles

2023

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Phase morphology, mechanical properties, melting and crystallinity, as well as the dynamic viscoelastic properties of poly(lactic acid) (PLA)/ethylene‐co‐vinyl acetate (EVA) (80/20) blend containing 0–3 wt% nano‐silicon carbide (SiC) were studied. Morphological observations revealed the localization of nano‐SiC particles around the EVA droplets with the consequence of a fall in the size of EVA dispersed phase in the nanocomposites compared with the unfilled blends. The mechanical characterization results showed a gradual increase in the elastic moduli and yield stress with increasing nano‐SiC content in the nanocomposites, while the strain at break and Izod impact strength were steadily decreased. The nano‐SiC particles served as nucleating agents for crystallization of the PLA matrix from the molten state. The crystallinity of the PLA matrix in the nanocomposites was slightly reduced compared with that of the unfilled blend. The dynamic mechanical thermal analysis results showed a gradual increase in the glass transition temperature of PLA matrix together with a steady decline of damping capability as the nano‐SiC content in the nanocomposite was increased. The dynamic rheological data demonstrated enhanced complex viscosities and storage moduli of the nanocomposites in a direct proportion to the nanofiller loading, specially at the low‐frequency region. The changes occurred in the various properties of the fabricated nanocomposites were interpreted in terms of alteration in the phase morphology and the physical interactions of the nano‐SiC particles with the blend's components.

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“…Consequently, using nanofillers may be an attractive route for developing multiphase polymeric materials with a balanced stiffness‐toughness property. [ 2,20–29 ]…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Physical, mechanical, viscoelastic, and morphological properties of poly(lactic acid)/ethylene‐co‐vinyl acetate blend reinforced with silicon carbide nanoparticles

2023

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The Role of Interchain Force and/or Chain Entanglement in the Melt Strength and Ductility of PLA‐Based Materials

Chen

Sun

et al. 2023

Chemistry An Asian Journal

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As an eco‐friendly material, PLA was a desirable alternative to polyethylene and polypropylene films due to its biodegradability. The preferable melt strength of PLA‐based materials was a key factor in ensuring its processing using extrusion blow. This paper focuses on the influence of interchain force and/or chain entanglement on the melt strength and ductility of PLA‐based materials in recent years. In addition, the preparation of PLA‐based materials via physical blending or reactive processing was also summarized. The blending of PLA with a flexible heteropolymer, driven by the interchain force and/or chain entanglements, were characterized as a practicable method for toughening PLA‐based materials. Also, the restructuring of PLA chains, by branching based on chain entanglement, was suitable for increasing chain entanglements in PLA matrix, yielding satisfactory melt strength and ductility. This review aims to elucidate the relationship between interchain forces and/or entanglement with the melt strength and ductility of PLA‐based materials. An essential and systematic understanding of the tailoring melt strength and rheological properties of PLA by interchain forces and/or entanglement was apt to improve and perfect the processing technology of the extrusion blow, and consequently improve the tensile strength and toughness of PLA films.

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Simultaneously Toughening and Reinforcing Polylactide by Regulating the Distribution of Core–Shell Rubber Particles with Carbon Black

Liu

Yan

Cai

et al. 2022

Macro Materials & Eng

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Stiffness–toughness balance is an important issue in rubber toughened polymer blends. In this work, a facile and effective route to simultaneously toughen and reinforce polylactide (PLA) by regulating the distribution of core–shell rubber (CSR) nanoparticles with carbon black (CB) is reported. The PLA/CSR/CB nanocomposites are prepared via direct melt‐blending PLA, CSR, and CB nanoparticles with different self‐aggregate capabilities. The FTIR and DFT calculation results reveal that the interactions between CB and CSR are stronger than those between CB and PLA. Thus, CB nanoparticles with high self‐aggregate capability (HCB) can drive CSR nanoparticles to join into the HCB network structures and form CSR‐HCB network structures in the PLA/CSR/HCB nanocomposites. However, for the CB nanoparticles with low self‐aggregate capability (LCB), uniform dispersion of both CSR nanoparticles and small‐sized CB clusters in the PLA/CSR/LCB nanocomposites is observed. Compared to the network structures, the uniform dispersion structure can endow PLA/CSR/CB nanocomposites with much better stiffness–toughness balance performances. Additionally, the distribution of CSR nanoparticles on the rheological properties of PLA/CSR/CB nanocomposites are studied. This work reveals significant correlations between distribution of CSR nanoparticles and properties of PLA nanocomposites, which is helpful to prepare high‐performance PLA materials.

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Improving Impact Toughness of Polylactide/Ethylene-co-vinyl-acetate Blends via Adding Fumed Silica Nanoparticles: Effects of Specific Surface Area-dependent Interfacial Selective Distribution of Silica

Cited by 13 publications

References 67 publications

Physical, mechanical, viscoelastic, and morphological properties of poly(lactic acid)/ethylene‐co‐vinyl acetate blend reinforced with silicon carbide nanoparticles

Physical, mechanical, viscoelastic, and morphological properties of poly(lactic acid)/ethylene‐co‐vinyl acetate blend reinforced with silicon carbide nanoparticles

The Role of Interchain Force and/or Chain Entanglement in the Melt Strength and Ductility of PLA‐Based Materials

Simultaneously Toughening and Reinforcing Polylactide by Regulating the Distribution of Core–Shell Rubber Particles with Carbon Black

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