Constructing Novel Biobased Phosphorus-Containing Oligomeric Lactates toward Synchronously Enhancing the Toughness and Fire Safety of Poly(lactic acid)

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(17), P. 6748 - 6761

Published: April 15, 2024

Simultaneously improving the flame retardancy and toughness of polylactic acid (PLA) remains a huge challenge. In this work, we report simple method for synthesizing PLA blended with biobased phosphorus-containing oligomeric lactates. Four lactates (PEL, PBL, PHL, POL) were synthesized l-lactic acid, aliphatic dihydric alcohols (ethylene glycol, butane-1,4-diol, 1,6-hexanediol, or 1,8-octanediol), phenyl phosphorodichloridate via esterification acylation reactions. Accordingly, flame-retardant ultratough composites can be achieved by direct blending commercially available plasticizer acetyl tributyl citrate (ATBC). The results exhibited that was obviously enhanced on adding 10 phr ATBC, its elongation at break reached about 550–670%, indicating their ultratoughness. This is ascribed to fact after ATBC diluted, fully dispersed in matrix so as reduce intermolecular force enhance toughness. Simultaneously, fire resistance distinctly. phosphoro group lactate structure PLA, which conducive capture radicals gas phase formation residual char condensed phase. All UL-94 V-0 rating. Besides, limited oxygen index increased from 20.0 34.8–41.0% addition 20 Additionally, both heat release rate total smoke effectively reduced. Intriguingly, four could improve crystallization retain outstanding transparency. work offers new manufacturing green flame-retardant, ultratough, transparent composites.

Language: Английский

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Synthesis of novel L-lactic acid-based plasticizers and their effects on the flexibility, crystallinity, and optical transparency of poly(lactic acid)

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 273, P. 132826 - 132826

Published: May 31, 2024

Language: Английский

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Recent advancements in bio-based plasticizers for polylactic acid (PLA): a review

Polymer Testing, Journal Year: 2024, Volume and Issue: unknown, P. 108603 - 108603

Published: Oct. 1, 2024

Language: Английский

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Solvent-Free One-Pot Recycling of Polylactide to Usable Polymers and Their Closed-Loop Recyclability

Macromolecules, Journal Year: 2024, Volume and Issue: 57(14), P. 6828 - 6837

Published: July 10, 2024

Language: Английский

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Facile approach to synthesis of full bio-based cardanol-derived plasticizer for polylactic acid with excellent plasticization and water vapor resistance

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 306, P. 141428 - 141428

Published: Feb. 25, 2025

Language: Английский

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Reutilization of waste cling film as a toughening agent and self-plasticizer in recycled poly(vinyl chloride) pipe for semi-rigid building material applications

Cleaner Materials, Journal Year: 2024, Volume and Issue: 12, P. 100244 - 100244

Published: March 28, 2024

Alternative approaches are urgently needed for both reuse and recycling of poly(vinyl chloride) (PVC) waste. Herein, this study aims to recycle rigid PVC pipe by toughening plasticizing it with waste cling film (CF). The CF has been first reused as a polymer additive blending from 0 50 wt% using two-roll mill compression molding machines. Both static dynamic mechanical properties, morphology, thermal transition, stability, migration the recycled (rPVC) were investigated compared unmodified PVC. Principal results showed that significantly improved softness toughness rPVC. Remarkably increased elongation 206 % (an 8-fold increase rPVC) strain-hardening event was obtained utilizing %wt CF, while tensile flexural strength decreased owing softening effect CF. There strong correlation between microstructure properties. wire drawing morphology toughest rPVC indicated mechanism via shear banding behavior, which inside proposed. A glass transition temperature reduction 35 °C achieved. Despite continued plasticizer in modified rPVC, volatilization diminished across all formulations, leading comparable stability rPVCs under typical processing temperatures. According these findings, potential capabilities agent self-plasticizer further reutilization confirmed. This provides new idea evaluation their applications. An alternative additive, derived flexible waste, also explored, introduced polymeric system.

Language: Английский

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Preparation, structure, and properties of biodegradable core‐sheath composite fibers derived from poly (butylene adipate‐co‐terephthalate) and polylactic acid

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 141(27)

Published: April 22, 2024

Abstract The non‐biodegradability of Ethylene‐Propylene Side‐by‐Side (ES) fibers has led to significant environmental pollution from waste sanitary products, thereby posing a severe challenge the environment. Replacing traditional non‐biodegradable materials with biodegradable polymeric is most effective method achieve green In this study, core‐sheath composed poly (butylene adipate‐co‐terephthalate) (PBAT) as sheath layer and polylactic acid (PLA) core were fabricated. effects different viscosity ratios composite on structure performance resultant investigated in detail. results showed that when PBAT/PLA ratio 50:50 range 0.8 1.43, exhibit good spinnability complete structure, their tensile properties comparable those PP/PE fibers. Further research found was 1.00 PLA component content increased 40% 60%, still maintained structure. addition, 60:40, after 120 days biodegradation, its strength retention rate only 35.2%.

Language: Английский

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Enhancing mechanical properties of polyvinyl chloride: Novel organic‐modified cinnamate‐intercalated calcium aluminum hydrotalcite as a high‐efficiency thermal stabilizer

Journal of Vinyl and Additive Technology, Journal Year: 2024, Volume and Issue: 30(5), P. 1177 - 1189

Published: April 30, 2024

Abstract To make the hydrotalcite uniformly dispersed in polyvinyl chloride (PVC) and enhance its thermal stability, cinnamate‐intercalated calcium aluminum (CaAl‐cinnamate‐LDHs) underwent organic modification with cetyltrimethylammonium bromide/sodium dodecyl sulfate/polyethylene glycol (CTAB/SDS/PEG). The structures of modified were characterized using x‐ray diffractometer, scanning electron microscope, particle size analysis, water contact angle test. stability was assessed through aging oven experiment, Congo Red thermogravimetric revealing their exceptional performance. Simultaneously, synergistic effect PEG‐LDHs auxiliary stabilizers examined, epoxy soybean oil proving to be most effective, which made PVC sample incompletely black within 120 min. Mechanical properties dynamic thermomechanical analysis indicated that overall mechanical characteristics samples significantly superior unmodified CaAl‐cinnamate‐LDHs. Additionally, optical performance test demonstrated excellent transparency PEG‐LDHs/PVC sample. Through analyzing mechanism, it effectively absorbed HCl. Furthermore, combination ESO replaced unstable Cl atoms reacted conjugated double bonds, thereby reducing discoloration PVC. Highlights preparation process simple easy operate. CTAB/SDS/PEG‐LDHs/PVC exhibited stability.

Language: Английский

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Synthesis, Performance Evaluation, and Plasticization Dynamics of a Dual-Green Components Flame-Retardant Plasticizer for Poly(vinyl chloride)

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 23, 2024

Language: Английский

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Synthesis and properties of an eco-friendly bio-based plasticizer for PVC with enhanced migration resistance

Journal of Materials Science, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Language: Английский

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