Life cycle design of fully bio-based poly(lactic acid) composites with high flame retardancy, UV resistance, and degradation capacity

Qiu, Shuang; Sun, Jun; Li, Yuchun; Zhu, Tao; Li, Hongfei; Gu, Xiaoyu; Fei, Bin; Zhang, Sheng

doi:10.1016/j.jclepro.2022.132165

Cited by 48 publications

(12 citation statements)

References 61 publications

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“…In addition, the absorption of ultraviolet light will also damage the precise structure of the radiation cooling film, thus reducing the radiation cooling capacity. To our knowledge, PLA tends to degrade under the exposure of ultraviolet light . Therefore, it is necessary to improve the ability to resist ultraviolet radiation.…”

Section: Resultsmentioning

confidence: 99%

Flexible Radiative Cooling Textiles Based on Composite Nanoporous Fibers for Personal Thermal Management

Yan

Fan

2023

ACS Appl. Mater. Interfaces

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Passive radiative cooling textiles can reflect sunlight and dissipate heat directly to the outside space without any energy input. However, radiative cooling textiles with high performance, large scalability, cost effectiveness, and high biodegradability are still uncommon. Herein, we exploit a porous fiber-based radiative cooling textile (PRCT) via nonsolvent-induced phase separation and scalable roll-to-roll electrospinning technology. Nanopores are introduced into single fibers, and the pore size can be accurately optimized by managing the relative humidity of the spinning environment. The anti-ultraviolet radiation and superhydrophobicity of textiles were improved by the introduction of core−shell silica microspheres. An optimized PRCT yields a strong solar reflectivity of 98.8% and atmospheric window emissivity of 97%, which results in a sub-ambient temperature drop of 4.5 °C, with the solar intensity over 960 W•m −2 and 5.5 °C at night. For personal thermal management, it is demonstrated that the PRCT can obtain a temperature drop of 7.1 °C compared to the bare skin under direct sunlight. Given the excellent optical and cooling properties, flexibility, and self-cleaning property, PRCT was demonstrated to be a potential candidate for commercial applications in multifarious complex scenarios to afford a style for global decarbonization.

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Section: Resultsmentioning

confidence: 99%

Flexible Radiative Cooling Textiles Based on Composite Nanoporous Fibers for Personal Thermal Management

Yan

Fan

2023

ACS Appl. Mater. Interfaces

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“…The neat PLA is a highly flammable polymer, and this intrinsic disadvantage severely restricts the broad applications of PLA. Therefore, many efforts [49][50][51][52][53][54] have been made to prepare flame-retardant PLA, which indicated that phosphorus-based compounds show high efficiency as flame-retardants of PLA. Because the newly prepared plasticizers of PC4 and their analogs are phosphorus-containing chemicals, the flame-retardant properties of the PLA/plasticizer system was studied by the burning test (Figure 10).…”

Section: Transparency Flame-retardancy and Plasticizer Migration Of T...mentioning

confidence: 99%

Tri(3‐alkoxyl‐3‐oxopropyl) phosphine oxides derived from PH₃ tail gas as a novel phosphorus‐containing plasticizer for polylactide

Liu

Hong

Wang

et al. 2022

Polymers for Advanced Techs

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Preparing a polylactide (PLA)/plasticizer system has been regarded as an effective solution to improve the ductility of brittle PLA. In this reach, a novel type of alkyl phosphine oxides consisting of three aliphatic ester substituents was prepared from PH3 tail gas, and its potential to be employed as a PLA plasticizer was studied. Differential scanning calorimeter tests confirmed that the newly‐prepared plasticizer decreased the Tg of PLA (28 wt% plasticizer) from 52°C (neat PLA) to 11°C, and increased the elongation at break from 11% (neat PLA) to 271% (plasticized PLA). X‐ray diffraction results showed that the crystallization degree of PLA (28 wt% plasticizer) increased from 0.12% of neat PLA to 14.04%, while Young's modulus of PLA remained as high as 121.3 MPa, which was much higher than that of the PLA/citrate ester systems with same plasticizer content. These novel phosphorus‐containing plasticizers exhibited excellent thermal stability and a weight‐loss of the system no more than 2.5% at 180°C; therefore, no unpleasant volatiles were released during processing. In contrast, the weight loss of the PLA/citrate system was as high as 10.8% at 180°C, forming heavy fog with an unpleasant smell during thermal mixing. Scanning electron microscopy was employed to observe the microstructure of the PLA/plasticizer systems, which indicated that the carboxylic butyl ester‐containing phosphine oxides was compatible with PLA matrix.

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“…43 However, due to the free radical scavenging activity of TA, some phenolic hydroxyl radicals generated by TA can combine with the radicals generated by the decomposition of PA6, resulting in the decrease of the pHRR value after UV irradiation. 42,44,45 The corresponding UV transmittance rates were obtained and shown in Figure S3 and Table S2. 46 It was seen that the UV-A and UV− B transmittance rate decreased significantly, and the UPF value increased significantly with the amount of TN and TA coatings on the surface of PA6, indicating the coatings provided excellent UV shielding.…”

Section: Uv Resistancementioning

confidence: 99%

Constructing a Fully Biobased Coating to Improve the Flame Retardancy, Antibacterial Properties, and UV Resistance of Polyamide 6 Fabrics

Liu

Qiu

et al. 2022

ACS Appl. Eng. Mater.

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A fully biobased solvent-free coating composed of tannic acid (TA) and taurine (TN) was constructed and introduced on polyamide 6 (PA6) fabric by a dipping-nipping process to improve the flame retardancy, antibacterial properties, and UV resistance of the fabric. Fire behavior characterization indicated that the presence of the TN/TA coating eliminated the melt dripping of the PA6 fabric and increased the limiting oxygen index to 26.8% from 19.4% of the control fabric sample. The total heat release and total smoke production of the coated fabric sample was reduced by 31.3% and 66.7%, respectively, compared to that of the control fabric sample. Moreover, the antibacterial activity of the coated fabric against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus was significantly enhanced. After 120 h of UV irradiation, the warp and weft tensile strength of the TN/TA coated PA6 fabric sample were increased by 200.9% and 159.0%, respectively, compared to that of the control PA6 fabric sample; in addition, the LOI and the damage length of the TN/TA coated PA6 fabric were almost unaffected. It was demonstrated that TA promoted the char formation and eliminated the melt dripping in the condensed phase, and TN diluted O 2 and combustible volatiles by releasing incombustible SO 2 in the gas phase. This work has provided useful information to prepare fully biobased multifunctional coatings for PA6 synthetic fabrics.

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Life cycle design of fully bio-based poly(lactic acid) composites with high flame retardancy, UV resistance, and degradation capacity

Cited by 48 publications

References 61 publications

Flexible Radiative Cooling Textiles Based on Composite Nanoporous Fibers for Personal Thermal Management

Flexible Radiative Cooling Textiles Based on Composite Nanoporous Fibers for Personal Thermal Management

Tri(3‐alkoxyl‐3‐oxopropyl) phosphine oxides derived from PH₃ tail gas as a novel phosphorus‐containing plasticizer for polylactide

Constructing a Fully Biobased Coating to Improve the Flame Retardancy, Antibacterial Properties, and UV Resistance of Polyamide 6 Fabrics

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Life cycle design of fully bio-based poly(lactic acid) composites with high flame retardancy, UV resistance, and degradation capacity

Cited by 48 publications

References 61 publications

Flexible Radiative Cooling Textiles Based on Composite Nanoporous Fibers for Personal Thermal Management

Flexible Radiative Cooling Textiles Based on Composite Nanoporous Fibers for Personal Thermal Management

Tri(3‐alkoxyl‐3‐oxopropyl) phosphine oxides derived from PH3 tail gas as a novel phosphorus‐containing plasticizer for polylactide

Constructing a Fully Biobased Coating to Improve the Flame Retardancy, Antibacterial Properties, and UV Resistance of Polyamide 6 Fabrics

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Product

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Tri(3‐alkoxyl‐3‐oxopropyl) phosphine oxides derived from PH₃ tail gas as a novel phosphorus‐containing plasticizer for polylactide