Strengthened corrosion control of poly (lactic acid) (PLA) and poly (ε-caprolactone) (PCL) polymer-coated magnesium by imbedded hydrophobic stearic acid (SA) thin layer

Zhang, Wentai; Chen, Yingqi; Chen, Meiyun; Zhao, Sheng; Mao, Jinlong; Ai, Qu; Li, Wei; Zhao, Yuancong; Huang, Nan; Wan, Guojiang

doi:10.1016/j.corsci.2016.07.027

Cited by 64 publications

(19 citation statements)

References 51 publications

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“…Melt‐blending PLA in an extruder with other flexible polymers is an excellent method to modify PLA. Poly(lactide acid) was blended with ductile modifiers such as poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate), poly(ε‐caprolactone), poly(butylenes succinate), and poly(butylene adipate‐co‐terephthalate) (PBAT) to make fully bio‐based and/or biocompostable materials.…”

Section: Introductionmentioning

confidence: 99%

The morphological, mechanical, rheological, and thermal properties of PLA/PBAT blown films with chain extender

Pan

et al. 2018

Polymers for Advanced Techs

101

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Biodegradable poly(lactic acid) (PLA)/poly(butylene adipate‐co‐terephthalate) (PBAT) blends and films were prepared using melt blending and blowing films technique in the presence of chain extender‐Joncryl ADR 4370F. The ADR contains epoxy functional groups and used as a compatibilizer. The morphological, mechanical, rheological, thermal, and crystalline properties of the PLA/PBAT/ADR blown films were studied. Scanning electron microscopy micrographs of the films revealed more ductile deformation with increasing PBAT content. The addition of PBAT enhanced the toughness of the PLA film. Tensile tests indicated that the elongation at break increased from 20.5% to 334.6% in the machine direction and from 7.1% to 715.9% in the transverse direction. The Young modulus increased from 2690.5 to 395.6 MPa in the machine direction and from 2623.5 to 154.0 MPa in the transverse direction. The sealing strength of 40/60/0.15 PLA/PBAT/ADR film was the highest among all the samples up to 9.4 N 15 mm−1. These findings gave important implications for designing and manufacturing polymer packaging materials.

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Section: Introductionmentioning

confidence: 99%

The morphological, mechanical, rheological, and thermal properties of PLA/PBAT blown films with chain extender

Pan

et al. 2018

Polymers for Advanced Techs

101

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“…However, the drawbacks of Mg alloys are low corrosion resistance, alkalization and hyper‐generation of hydrogen . There are different effective methods to protect the Mg from corrosion viz., anodization , calcium phosphate coating, polymer based coating, chemical conversion coating, hydride coating, sol‐gel coating, etc. Fluoride conversion coating is of particular interest for Mg implant because it enhances corrosion resistance and biodegradability of Mg alloys .…”

Section: Introductionmentioning

confidence: 99%

Dynamic electrochemical impedance study of fluoride conversion coating on AZ31 magnesium alloy to improve bio‐adaptability for orthopedic application

Kannan

Kalaiyarasan

Chatterjee

et al. 2019

Materials & Corrosion

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In the present work, fluoride conversion coating was formed on AZ31 magnesium alloy at 40 °C and the conversion time was optimized. A smooth surface with pores were formed which was observed from SEM. The crystalline MgO and MgF2 formed on the surface were confirmed by EDAX and X‐ray diffraction (XRD). The investigation on corrosion behavior of the coating was performed using potentiodynamic polarization, potentiostatic polarization and dynamic electrochemical impedance studies (DEIS). The coating stability was studied at various potentials ranging from −1.78 to −1.09 V which depicts that the coating was stable for wide range of potentials as compared to the substrate. The in vitro biomineralization of the coating was analyzed by immersing in Earle's solution for 7 days and the formation of nanospherical carbonated apatite with fluorine and magnesium was revealed by SEM/EDAX and ATR‐IR spectroscopy. The osteointegration and proliferation of MG63 and MSC cells on the coating were examined using MTT assay.

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“…Melt blending PLA in an extruder with other flexible polymers is an excellent method to increase the elongation at break and toughness of the resulting material and is a highly economical and efficient production method. PLA was blended with ductile modifiers such as poly(3‐hydroxybutyrate‐ co ‐3‐hydroxyvalerate) (PHBV) , poly(ɛ‐caprolactone) (PCL) , poly(butylene succinate) (PBS) and poly(butylene adipate‐ co ‐terephthalate) (PBAT) to make fully bio‐based and/or biocompostable materials.…”

Section: Introductionmentioning

confidence: 99%

Improvement of compatibility and mechanical properties of the poly(lactic acid)/poly(butylene adipate‐co‐terephthalate) blends and films by reactive extrusion with chain extender

Yan

Yang

et al. 2017

Polymer Engineering & Sci

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Biodegradable poly(lactic acid)/poly(butylene adipate‐co‐terephthalate) (PLA/PBAT) blends and films were prepared by melt blending and blowing films technique in the presence of chain extender. The Joncryl ADR‐4370F (ADR) was used as the chain extender. The effect of ADR on the mechanical properties, rheological behavior, morphology, and thermal behavior of PLA/PBAT blends was investigated. The mechanical properties were markedly improved by incorporation of 0.15 phr ADR, for example, the elongation at break increased from 23.5% to 410.3% and the notched Izod impact strength increased from 7.5 to 33.4 KJ/m2 for the PLA/PBAT/ADR blends. The elongation at break increased from 17.7% to 264.6% and the tensile strength increased from 28.0 to 40.7 MPa for the PLA/PBAT/ADR films in the transverse direction. The tensile strength and tear strength of the films increased from 28.0 to 40.7 MPa and from 135.5 to 163.8 kN/m in the machine direction, respectively. Morphological observation through scanning electron microscopy revealed that the compatibility of the PLA/PBAT blends was greatly enhanced by the incorporation of ADR. The interfacial adhesion was improved between PLA phase and PBAT phase. These findings contributed new knowledge to the additives area and gave important implications for manufacturing biodegradable polymer packaging material. POLYM. ENG. SCI., 58:1868–1878, 2018. © 2017 Society of Plastics Engineers

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Strengthened corrosion control of poly (lactic acid) (PLA) and poly (ε-caprolactone) (PCL) polymer-coated magnesium by imbedded hydrophobic stearic acid (SA) thin layer

Cited by 64 publications

References 51 publications

The morphological, mechanical, rheological, and thermal properties of PLA/PBAT blown films with chain extender

The morphological, mechanical, rheological, and thermal properties of PLA/PBAT blown films with chain extender

Dynamic electrochemical impedance study of fluoride conversion coating on AZ31 magnesium alloy to improve bio‐adaptability for orthopedic application

Improvement of compatibility and mechanical properties of the poly(lactic acid)/poly(butylene adipate‐co‐terephthalate) blends and films by reactive extrusion with chain extender

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