Enhanced toughness of PLLA/PCL blends using poly(d-lactide)-poly(ε-caprolactone)-poly(d-lactide) as compatibilizer

Xiao, Xianglian; Chevali, Venkata S.; Song, Pingan; Yu, Bin; Yang, Yihu; Wang, Hao

doi:10.1016/j.coco.2020.100385

Cited by 40 publications

(14 citation statements)

References 20 publications

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“…This indicates that the fracture behavior of the sample in the tensile test changed from the brittleness of pure sc-PLA to the ductile fracture of sc-PLA/MBC-20% blends, which is ascribed to the intrinsic high flexibility of the PLLA/PCL multi-block copolymer. Similar phenomena have been reported by Zhang et al 48 and Xiao et al 49 Considering the loss in tensile strength accompanied by the multi-block copolymer, the appropriate contents of the multi-block copolymer should be 10–15% in the sc-PLA/MBC blends.…”

Section: Resultssupporting

confidence: 83%

Crystallization, thermal and mechanical properties of stereocomplexed poly(lactide) with flexible PLLA/PCL multiblock copolymer

et al. 2022

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Section: Resultssupporting

confidence: 83%

Crystallization, thermal and mechanical properties of stereocomplexed poly(lactide) with flexible PLLA/PCL multiblock copolymer

et al. 2022

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“…∆H m o is the melting enthalpy of 100% crystalline polymer (93.6 J/g for PLA, 136.0 J/g for PCL, respectively). [13,14] The morphologies of the samples were investigated using a JSM-6490LV scanning electron microscope (SEM). The samples were first freeze-fractured in liquid nitrogen, and then the PCL minor phase was etched with acetic acid for 15 h at room temperature.…”

Section: Characterizationmentioning

confidence: 99%

“…[10][11][12] The common compatibilizing agents such as PLA-PCL random, PLA-PCL-PLA block copolymers can improve the interfacial adhesion and enhance the miscibility of the two components. [13][14][15] Graphene (Gra) is a two-dimensional carbon material with a single atomic layer. [16,17] The tight bonding of Gra surface and the delocalized electrons generated by the sp 2 hybridization of the carbon atoms give excellent mechanical property, charge mobility and electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of P[MPEGMA-IL] Modified Graphene on Morphology and Dielectric Properties of PLA/PCL Blends

Zhou¹,

Wang²,

Ruan³

et al. 2020

ES Mater. Manuf.

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To investigate the combined effect of graphene (Gra) and poly(methoxy poly(ethylene glycol) monomethacrylate-co-1-vinyl-3-ethylimidazolium bromide) (P[MPEGMA-IL]) on the morphology, crystallization behavior and dielectric properties for polylactide (PLA)/poly(-caprolactone) (PCL) blends, a series of PLA/PCL blend based composites have been prepared using solution-cast method. The P[MPEGMA-IL] modified Gra could be mainly localized in the PCL domains, and improved the dispersibility of PCL phase in the composites. Due to the heterogeneous nucleation of Gra and ion cluster of P[MPEGMA-IL], the crystallinity of PLA and PCL were improved simultaneously with the increase of modified Gra content. The good conductivity of Gra and the better dispersion of PCL made the PLA/PCL blends with higher dielectric permittivity owing to the increase of the mobile charge carriers at the interfaces.

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“…Several modification methods, such as copolymerization [20][21][22][23], plasticization [24][25][26][27] and blending with other polymers [28][29][30][31], have been proposed to toughen PLA. Copolymerization modification of PLA, such as poly(L-lactide-co-ε-caprolactone)(poly(CL-co-LA)) [23] and PLA-b-PEG [22], could toughen PLA efficiently and obtained favorable mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Toughening Modification of Polylactic Acid by Thermoplastic Silicone Polyurethane Elastomer

Sun

Huang

et al. 2021

Polymers

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The melt blending of polylactic acid (PLA) and thermoplastic silicone polyurethane (TPSiU) elastomer was performed to toughen PLA. The molecular structure, crystallization, thermal properties, compatibility, mechanical properties and rheological properties of the PLA/TPSiU blends of different mass ratios (100/0, 95/5, 90/10, 85/15 and 80/20) were investigated. The results showed that TPSiU was effectively blended into PLA, but no chemical reaction occurred. The addition of TPSiU had no obvious effect on the glass transition temperature and melting temperature of PLA, but slightly reduced the crystallinity of PLA. The morphology and dynamic mechanical analysis results demonstrated the poor thermodynamic compatibility between PLA and TPSiU. Rheological behavior studies showed that PLA/TPSiU melt was typically pseudoplastic fluid. As the content of TPSiU increased, the apparent viscosity of PLA/TPSiU blends showed a trend of rising first and then falling. The addition of TPSiU had a significant effect on the mechanical properties of PLA/TPSiU blends. When the content of TPSiU was 15 wt%, the elongation at break of the PLA/TPSiU blend reached 22.3% (5.0 times that of pure PLA), and the impact strength reached 19.3 kJ/m2 (4.9 times that of pure PLA), suggesting the favorable toughening effect.

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Enhanced toughness of PLLA/PCL blends using poly(d-lactide)-poly(ε-caprolactone)-poly(d-lactide) as compatibilizer

Cited by 40 publications

References 20 publications

Crystallization, thermal and mechanical properties of stereocomplexed poly(lactide) with flexible PLLA/PCL multiblock copolymer

Crystallization, thermal and mechanical properties of stereocomplexed poly(lactide) with flexible PLLA/PCL multiblock copolymer

Synergistic Effect of P[MPEGMA-IL] Modified Graphene on Morphology and Dielectric Properties of PLA/PCL Blends

Toughening Modification of Polylactic Acid by Thermoplastic Silicone Polyurethane Elastomer

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