Article
Energy & Fuels
Dharmjeet Madhav, Bart Buffel, Frederik Desplentere, Paula Moldenaers, Veerle Vandeginste
Summary: In this study, CaCO3 particles with different morphologies were produced via single-step CO2 capture and mineralization, inspired by the natural formation of nacre. It was found that a combination of triethanolamine and ammonium hydroxide as absorption promoters resulted in 53.2% conversion of Ca2+ into stable CaCO3 particles within 5 minutes. Polymer and surfactant-mediated mineralization of CO2 produced spherical and hollow, stable calcite particles that could have various applications.
Article
Polymer Science
Se-Jin Choi, Sung-Ho Bae, Jae-In Lee, Eun Ji Bang, Hoe Young Choi, Haye Min Ko
Summary: This study explores the use of chitosan-based bio-inspired polymers to improve the strength and durability of cement concrete. By adjusting the pH during synthesis, the characteristics of the polymers were successfully tuned. The study found that adding bio-inspired polymers can significantly enhance the compressive and tensile strengths of cement concrete.
Article
Polymer Science
Adriano Vignali, Roberto Utzeri, Maurizio Canetti, Fabio Bertini
Summary: In this study, composites based on poly(epsilon-caprolactone) (PCL) filled with hollow glass microspheres (HGM) or functionalized hollow glass microspheres (HGMf) were prepared via melt-compounding. Silanization treatment improved the compatibility between the inorganic particles and the polymer matrix, leading to enhanced dispersion of glass microspheres in the matrix and better filler-polymer adhesion. The presence of silanized glass microspheres promoted faster crystallization rates and higher nucleation activity compared to neat PCL and composite filled with 20 wt% HGMf. Crystalline and supermolecular structure of PCL and composites crystallized from the melt showed differences in terms of crystallinity index and structural parameters under different crystallization conditions.
Article
Chemistry, Multidisciplinary
Liubin Shi, Mingde Tang, Yaseen Muhammad, Yong Tang, Lulu He, Weichao Wang, Zhangfa Tong, Lishuo Li
Summary: Calcium carbonate hollow microspheres with a micro-nano hierarchical structure were successfully synthesized using EDTA-2Na as an additive, with a diameter of 4-6 μm and a wall thickness of 100 nm assembled into cubic shape nanoparticles. The fluorescence analysis revealed that the luminescence intensity of the product increased with an increasing Eu3+ content in the microspheres, reaching maximum intensity at 4% content.
Article
Chemistry, Applied
Xule Yang, Danping Qi, Kaibo Xu, Alimasi Alimu, Liqin Cao
Summary: In this study, biocompatible macro-porous nano-hydroxyapatite particles (n-HAPs)/polymer monolithic composites were prepared using a green and facile method. The composites showed good dispersion of functional fillers and improved flexibility and mechanical performance. The non-toxicity and enzyme immobilization properties of these composites were also demonstrated. The results suggest that these porous composites have promising potential in various applications.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Materials Science, Ceramics
Youqu Shen, Julie A. Semon, Richard K. Brow
Summary: Hollow biphasic calcium phosphate (BCP) microspheres with different fractions of nanocrystalline hydroxyapatite (HA) and beta-tricalcium phosphate (beta-TCP) were prepared and evaluated for their in vitro and in vivo reactivity. The microspheres showed varying degrees of calcium ion release and bone formation, with greater fractions of beta-TCP promoting more new bone formation.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Debojit Paul, Gopal Das
Summary: This study focused on the mechanical properties of CaCO3 composites based on flavonoids, highlighting how the toughness of the composite could be varied by tuning the concentration of the organic phase. The interaction between organic and inorganic phases significantly influenced the mechanical properties of the composite. Post-doping evaluation of the composites showed improved tensile stress values for CaCO3 incorporated with quercetin and hesperidin compared to bare CaCO3.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Nanoscience & Nanotechnology
Hao Li, Yong Li, Jun Wu, Xiaohua Jia, Jin Yang, Dan Shao, Lei Feng, Sizhe Wang, Haojie Song
Summary: This study presents the design of bio-inspired hollow carbon microtubes (HCMTs) as a promising material for photothermal applications. The HCMTs, inspired by polar bears, effectively reduce heat loss and improve the utilization of light and photothermal properties. The coatings made from HCMTs show excellent superhydrophobic properties and can withstand various environmental conditions, making them highly durable and adaptable.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Kristopher White, Rabab Chalaby, Gina Lowe, Jacob Berlin, Carlotta Glackin, Ronke Olabisi
Summary: The method of assessing mineralization by osteoblasts within microspheres using calcein and Alizarin Red S was described in the study, with calcein staining proving to be more consistent in hydrogel microspheres.
Article
Materials Science, Ceramics
Bo Li, Jun Xiong, Chuang Peng, Ming Li, Hao Liu, WeiMing Wang, Shuai Peng
Summary: In this study, hierarchical porous hydroxyl aluminum oxide hollow microspheres with controllable structure and morphology were prepared. The CO2 trapping performance of potassium carbonate-based adsorbents prepared using these microspheres as supports was evaluated. The results showed that the loading of potassium carbonate, the pore structure, and the surface basic site of the adsorbent significantly influenced its CO2 trapping performance.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Composites
Yucong Jin, Lijun Ye, Yuchi Chai, Jiahui Hong, Yongjin Li
Summary: This study explored the possibility of tailoring the filler arrangement and through-plane thermal conductivity (A perpendicular to) of polymer composites with asymmetric fillers using nonconductive hollow glass microspheres (HG mu S). It was found that by replacing 3 wt% of flake graphite (FG) platelets with HG mu S, the A perpendicular to of ultrahigh-filled polyamide 6/FG composites increased by 27%. This increase was attributed to the reduced structural anisotropy of the FG network and a synergistic effect achieved by combining HG mu S and alumina microspheres.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Applied
Mengjie Xu, Tingting Liu, Miao Qin, Yizhu Cheng, Weiwei Lan, Xiaolian Niu, Yan Wei, Yinchun Hu, Xiaojie Lian, Liqin Zhao, Song Chen, Weiyi Chen, Di Huang
Summary: Inspired by bone matrix vesicles, a similar physiological environment was established on alginate microspheres for biomimetic mineralization using DMEM. The formation of HA crystals and coating on the microspheres showed good biocompatibility and osteogenic performance, providing a potential solution for bone defect repair.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Environmental
Zi-ling Li, Yi-dan Wei, Jia-ning Wei, Ke-yan Chen, Yu He, Man-man Wang
Summary: A novel adsorbent CaCO3@HAP/Fe3O4 was prepared and successfully applied for efficient and selective adsorption of benzoylurea insecticides in tea beverages samples. The method showed excellent adsorption capacities, good stability, and easy regeneration of the sorbent for multiple uses, providing a convenient and reliable strategy for the determination of BUs in tea beverages.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Crystallography
Ya-Xin Li, Yuan Jiang
Summary: An emerging approach to synthesizing drug-loaded CaCO3 composites via the synergistic occlusion of alginate hydrogel matrices and the associated drug has been proposed. The technique was shown to result in the uniform dispersion of the anticancer drug doxorubicin within the hydrogel matrices, leading to CaCO3-based composites with high drug loadings and sustained and pH-responsive drug release. This occlusion strategy has the potential to be a general approach for designing smart drug delivery systems, considering the ability of many drug molecules to form molecular solutions with polymeric components.
Article
Materials Science, Ceramics
Shuaishuai Li, Ren Guo, Song Chen, Jianan Zhang, Toshiyuki Ikoma, Xiaona Li, Weiyi Chen
Summary: In this study, porous hollow hydroxyapatite (HAp) microspheres were successfully prepared using chitosan microspheres as sacrificial templates. The microstructure, biocompatibility, and drug delivery properties of HAp microspheres were evaluated. The results showed that the HAp microspheres had a spherical morphology with a porous and core-shell structure. They exhibited good biocompatibility and could support the attachment and proliferation of osteoblast cells. Furthermore, the HAp microspheres could adsorb and deliver a model drug, tetracycline hydrochloride (TH), and retain its biological activity to inhibit the growth of bacteria.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
