Foaming biocompatible and biodegradable PBAT/PLGA as fallopian tube stent using supercritical carbon dioxide

Wang, Yue; Huan, Luyao; Liang, Huaping; Ding, Xuejia; Mi, Jianguo

doi:10.1016/j.cjche.2021.04.028

Cited by 5 publications

(3 citation statements)

References 46 publications

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“…Upon further increasing the temperature to 115 °C, the cell walls of the foam appeared to collapse seriously, resulting in poor cell structure. This phenomenon occurs because the elevated temperature reduces the melt strength, rendering it unable to support the cell structure. , Figure b displays SEM images of the foams prepared at various saturation pressures. As the pressure increased, the cell size gradually decreased, primarily due to the increased quantity of CO 2 dissolved in the polymer melt resulting from the rise in pressure .…”

Section: Resultsmentioning

confidence: 99%

Shrink-Resistant Poly(butylene adipate-co-terephthalate) Foam Reinforced with Crystalline Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Particles

Sheng,

Zhou,

Yan

et al. 2023

ACS Appl. Polym. Mater.

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Poly(butylene adipate-co-terephthalate) (PBAT) foam blown with CO2 exhibits severe shrinkage problems, with a substantial post-foaming shrinkage ratio reaching up to 80%. In this study, we reported a useful method to prepare PBAT foams with good dimensional stability by simply optimizing the polymer blending ratios and foaming conditions. The foaming behaviors showed that the PBAT/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blend with a mass ratio of 80/20 possessed an expansion ratio of up to 29.3 at 110 °C, with a shrinkage ratio of less than 5%. Moreover, the presence of 20 wt % PHBV in PBAT melt could not only facilitate the open-cell structure but also improve the stiffness of the cell walls. A possible mechanism for the reinforced foam stability is proposed based on the results of the CO2 desorption experiment and foam morphology observation.

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Section: Resultsmentioning

confidence: 99%

Shrink-Resistant Poly(butylene adipate-co-terephthalate) Foam Reinforced with Crystalline Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Particles

Sheng,

Zhou,

Yan

et al. 2023

ACS Appl. Polym. Mater.

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“…Articles report tunable porous structures with fast biodegradability, low thermal conductivity, high compression strength, and low density. Some of the applications of PBAT porous materials involve medical purposes [ 26 ], aesthetic problems [ 27 ], and insulation [ 28 ]. The PBS porous structure is appointed for use as selective oil-adsorbing materials [ 29 ], packaging applications [ 30 ], and thermal insulation [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Biodegradable Polymers for Porous Structure: Further Steps toward Sustainable Plastics

Lima,

Mukherjee,

Picchioni

et al. 2024

Polymers

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Plastic pollution poses a significant environmental challenge, necessitating the investigation of bioplastics with reduced end-of-life impact. This study systematically characterizes four promising bioplastics—polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), and polylactic acid (PLA). Through a comprehensive analysis of their chemical, thermal, and mechanical properties, we elucidate their structural intricacies, processing behaviors, and potential morphologies. Employing an environmentally friendly process utilizing supercritical carbon dioxide, we successfully produced porous materials with microcellular structures. PBAT, PBS, and PLA exhibit closed-cell morphologies, while PHBV presents open cells, reflecting their distinct overall properties. Notably, PBAT foam demonstrated an average porous area of 1030.86 μm2, PBS showed an average porous area of 673 μm2, PHBV displayed open pores with an average area of 116.6 μm2, and PLA exhibited an average porous area of 620 μm2. Despite the intricacies involved in correlating morphology with material properties, the observed variations in pore area sizes align with the findings from chemical, thermal, and mechanical characterization. This alignment enhances our understanding of the morphological characteristics of each sample. Therefore, here, we report an advancement and comprehensive research in bioplastics, offering deeper insights into their properties and potential morphologies with an easy sustainable foaming process. The alignment of the process with sustainability principles, coupled with the unique features of each polymer, positions them as environmentally conscious and versatile materials for a range of applications.

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“…Articles report tunable PBAT and PBS porous structures with fast biodegradability, low thermal conductivity, high compression strength, and low density. Some of the applications of PBAT porous materials involves medical purposes [24], aesthetic problems [25] and insulation [26]. PBS porous structure is appointed to use as selective oil-adsorbing materials [27], packaging applications [28], and also thermal insulation [29] Besides plastic pollution creating environmental imbalance, the depletion of fossil resources is also a problem.…”

Section: Introductionmentioning

confidence: 99%

Biodegradable PBAT, PBS and PHBV polymers characterization for porous structure: further steps to sustainable plastics

Lima

Mukherjee

Picchioni

et al. 2022

Preprint

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Plastic pollution is one of the main issues of the modern era. When plastic is wrongly disposed of, it can be found in contaminated water, land, and even in the air. One of the solutions to tackle plastic con-tamination in the world is introducing polymers that require fewermaterials to fulfill the same function in addition to biodegradable and biobased options. Biodegradable polymers tackle end-of-life pollution when wrongly discarded, and biobased polymers use fewer or none fossil-based resources. In this study, we characterize the bioplastics Polybutylene adipate terephthalate (PBAT), Polybutylene succinate(PBS), and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) as further steps to stage the features of promising alternatives to currently utilized plastics. We access the chemical, thermal and mechanical characteristics of commercially available PBAT, PBS, and PHBV polymers.These results help us to understand purity, process behavior, and per-ceive different porous morphology. In addition, we successfully produce porous materials using a green process with carbon dioxide. Because of their respective features, all three polymers resulted in microcellularporous, but PBAT and PBS resulted in closed cells and PHBV opencells. Since each polymer has different thermal properties, the process temperature follows their respective melting temperature.In order to see the morphology of each sample, the porous material was cut and analyzed under a scanning electron microscope (SEM). The possibility to make porous samples with different morphology also adds value to the polymers and introduces new options to fill more applications.

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Foaming biocompatible and biodegradable PBAT/PLGA as fallopian tube stent using supercritical carbon dioxide

Cited by 5 publications

References 46 publications

Shrink-Resistant Poly(butylene adipate-co-terephthalate) Foam Reinforced with Crystalline Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Particles

Shrink-Resistant Poly(butylene adipate-co-terephthalate) Foam Reinforced with Crystalline Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Particles

Characterization of Biodegradable Polymers for Porous Structure: Further Steps toward Sustainable Plastics

Biodegradable PBAT, PBS and PHBV polymers characterization for porous structure: further steps to sustainable plastics

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