Article
Chemistry, Multidisciplinary
Mathilde Laird, Niklas Herrmann, Naseem Ramsahye, Cedric Totee, Carole Carcel, Masafumi Unno, John R. Bartlett, Michel Wong Chi Man
Summary: This study reports an unprecedented, single isomer styryl-functionalized T-18 POSS, which has been unambiguously identified among nine possible isomers using multinuclear solution NMR, MALDI-MS, FTIR, and computational studies. A ring-strain model was developed to predict the speciation of non-equivalent Si atoms in other T-n compounds, demonstrating its general applicability and usefulness for predicting Si-atom environments.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Tughan Akbasak, Mehmet Kodal, Olcay Mert, Gueralp Ozkoc
Summary: Researchers are seeking alternative hydrophobic coatings to replace fluorinated chemicals, and polyhedral oligomeric silsesquioxanes (POSS) show potential as environmentally friendly candidates. In this study, hydrophobic cotton and polyester surfaces were created by anchoring Octavinyl POSS (OL-POSS) and Aminopropylisobutyl POSS (AM-POSS) using a one-step dip-coating technique. The use of ultraviolet (UV) radiation with Benzoyl Peroxide (BPO) initiator increased surface roughness and hydrophobicity. The findings suggest that 5% POSS coatings can provide similar or better water absorption duration (WAD) values compared to fluorinated chemicals.
Article
Engineering, Chemical
Yu-Jie Shen, Qing-Ran Kong, Li-Feng Fang, Ze-Lin Qiu, Bao-Ku Zhu
Summary: In this study, a molecular deposition strategy was designed to construct a high-performance nanochannel separation layer for selective separation of small molecules. The use of multifunctional molecules resulted in the creation of a robust and highly permeable composite membrane, which demonstrated excellent stability and rejection of antibiotics. This novel and green strategy provides an efficient way to separate molecules and salt using nanochannel composite membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Haixiang Song, Qiqi Zhang, Yanwei Zhang, Yanfei Wang, Zhongyuan Zhou, Ping Zhang, Bingnan Yuan
Summary: The influence of 3-amino-polyhedral oligomeric silsesquioxane (NH2-POSS) on waterborne polyurethanes (WPU) was studied by synthesizing NH2-POSS modified WPUs. The addition of NH2-POSS improved the dispersion stability and thermal stability of WPU, while also enhancing hydrophobic properties.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Polymer Science
Artur Bukowczan, Konstantinos N. Raftopoulos, Jacek Niziol, Krzysztof Pielichowski
Summary: Molecular mobility and liquid crystalline order formation of liquid crystalline polyurethanes (LCPU) modified by trisilanolphenyl-POSS were studied using various techniques. The addition of POSS did not significantly alter the nanoscale morphology of the LCPU matrix. Liquid crystal phase transitions were confirmed through dielectric and differential scanning calorimetry measurements. The presence of partially cross-linked POSS particles enhanced the material's rubber modulus in dynamic mechanical analysis. Overall, POSS caused a nucleation effect and did not impair LC phase formation.
Article
Chemistry, Physical
Artur Bukowczan, Konstantinos Raftopoulos, Krzysztof Pielichowski
Summary: A series of fibrous meshes based on liquid crystalline polyurethane/POSS composites were prepared. The influence of two different types of polyhedral oligomeric silsesquioxanes (POSSs) on fiber morphology, thermal properties, and mechanical properties was investigated.
Article
Polymer Science
Liberata Guadagno, Andrea Sorrentino, Raffaele Longo, Marialuigia Raimondo
Summary: In this study, a tetrafunctional epoxy resin loaded with different types of POSS compounds and multi-walled carbon nanotubes (CNTs) was used to formulate multifunctional structural nanocomposites for aeronautic and aerospace applications. The combination of nanoscale incorporations of CNTs with POSS resulted in nanohybrids that displayed desired properties, such as good electrical, flame-retardant, mechanical, and thermal properties. The presence of hydrogen bonding-based intermolecular interactions between the nanofillers played a strategic role in imparting multifunctionality to the nanohybrids. The TUNA technique confirmed the good dispersion of CNTs within the epoxy resin, and the combined action of POSS with CNTs enhanced the self-healing efficiency of the nanocomposites.
Article
Chemistry, Multidisciplinary
Kunal Mishra, Raman P. Singh
Summary: Polyhedral oligomeric silsesquioxane (POSS) is a nanoscale reinforcement that can modify the mechanical, thermal, and chemical properties of thermosetting polymers, such as epoxy resin systems. The inclusion of POSS in epoxy resin at higher loading introduces ductility in the fracture behavior of nanocomposites. The J-integral is used to quantify the fracture behavior and characterizes the crack growth resistance curve. Different nanocomposites are prepared by adding varying amounts of glycidyl POSS into DGEBF epoxy resin, and the fracture toughness experiments show that the addition of POSS improves crack initiation toughness and changes the failure behavior due to the development of POSS-POSS compliant domains. The increase in fracture resistance at higher POSS loading is due to shear yielding, while the increased fracture toughness at lower POSS loading is due to crack pinning and deflection.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Mayu Nagao, Taihei Hayashi, Hiroaki Imoto, Kensuke Naka
Summary: Dumbbell-shaped polyhedral oligomeric silsesquioxane (POSS) derivatives with unsymmetrical structures exhibit hybrid properties in solubility and thermal behavior, showing potential to improve the thermal degradation performance of compounds.
Article
Electrochemistry
Devaney Ribeiro do Carmo, Murilo Santos Peixoto, Alexsandro dos Santos Felipe, Valmor Roberto Mastelaro, Fernanda dos Santos Franco
Summary: In this study, a polyhedral oligomeric silsesquioxanes (POSS) modified with zinc and ferrocyanide was prepared to create an electroactive nanohybrid material (SZnH) for developing an electrochemical sensor to detect isoniazid. The SZnH-modified graphite paste electrode (GPSZn) demonstrated high sensitivity to isoniazid concentrations, with two linear response ranges from 1.0 x 10(-5) to 1.0 x 10(-3) mol l(-1).
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Polymer Science
Magdalena Lipinska
Summary: The effects of POSS nanoparticles on the properties of biodegradable poly(epsilon-caprolactone) (PCL) were studied. It was found that amine-POSS and Gly-POSS enhanced the mechanical properties of PCL, while HO-POSS facilitated crystallization. TGA analysis showed that the thermal stability of PCL decreased when HO-POSS and Gly-POSS were added.
Article
Chemistry, Applied
Zuzanna Buchwald, Mariusz Szolyga, Joanna Zwolinska, Bogdan Marciniec, Adam Voelkel
Summary: The remineralizing potential of hydroxyapatite has led to its use in dental composites. However, the compatibility between hydroxyapatite and organic compounds is insufficient, resulting in low mechanical properties. Polyhedral oligomeric silsesquioxanes show promise as additives to dental composites, and their modification of hydroxyapatite surfaces improves mechanical properties and reduces water sensitivity.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Chemistry, Applied
Juna Chen, Tengfei Liu, Xin Zhang, Yishan Jiang, Feng Xiao, Wen Li, Xianming Wang, Shougang Chen
Summary: In this study, polyhedral oligomeric silsesquioxane (POSS) was covalently grafted on a 2D covalent organic framework to enhance the corrosion and wear resistance of epoxy coating. The results demonstrated that the addition of POSS improved the hydrophobicity of the coating and exhibited excellent anti-corrosion and wear resistance properties. The study suggests that incorporating 2D-COF with POSS could lead to the development of advanced composite coatings.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Ruirui Zhou, Lijie Lin, Birong Zeng, Xindan Yi, Chenyu Huang, Kunpeng Du, Xiaohui Liu, Yiting Xu, Conghui Yuan, Lizong Dai
Summary: The DOPO-containing diblock copolymer poly(HAMA(m)-b-HEPOMA(n)) was synthesized and grafted with Ti-POSS to obtain PolyTi. The PolyTi was used as a macromolecular flame retardant to modify epoxy resin materials, resulting in improved thermal stability, flame retardancy, and resistance to migration.
Article
Materials Science, Multidisciplinary
Wenyuan Zhang, Zijian Zheng, Jianfeng Huang, Zhaohong Shen, Boyou Hou, Meiyu Ji, Wenchao Zhang, Zhaolu Qin, Rongjie Yang
Summary: By combining boron nitride and polyhedral oligomeric silsesquioxane, researchers prepared an iron-containing polyhedral oligomeric silsesquioxane assembly that showed improved thermal conductivity, reduced dielectric constant, decreased heat release rate, and enhanced flame retardancy in epoxy composites.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Hongni Wang, Zhongjie He, Xiaoqian Li, Yudeng Wang, Dongdong Yao, Yaping Zheng
Summary: By incorporating functionalized graphene oxide with Co-MOF and phytic acid, the flammability of epoxy resin (EP) was effectively reduced. The addition of 2 wt% of the nano-hybrid material, ZIF-67@GO-PA, improved the limiting oxygen index value of EP to 29.4% and achieved a UL-94 rating of V-0. Furthermore, the peak heat release rate and total release rate were significantly decreased by 57.4% and 25.7%, respectively. These improvements were attributed to the catalytic effect of metal oxide and phosphorous compounds produced during the combustion of ZIF-67@GO-PA, as well as the barrier effect of graphene oxide.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yangyang Xin, Dechao Wang, Dongdong Yao, Hailong Ning, Xiaoqian Li, Xiaoqian Ju, Yichi Zhang, Zhiyuan Yang, Yahong Xu, Yaping Zheng
Summary: A new strategy for synthesizing low-viscosity UiO-66-PLs was proposed based on post-synthetic modification of MOFs and the like-dissolves-like principle. The synthesized UiO-66-PLs exhibit superior fluidity at room temperature and accessible porosity.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Zhongjie He, Xiaoqian Li, Hongni Wang, Fangfang Su, Dechao Wang, Dongdong Yao, Yaping Zheng
Summary: A simple strategy was proposed to construct graphene aerogels (GAs) with an adjustable structure, and the properties of GAs were significantly improved by adjusting the microstructure.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Hongni Wang, Zhongjie He, Yudeng Wang, Zhilin Zhang, Xiaoqian Li, Dechao Wang, Fangfang Su, Dongdong Yao, Yaping Zheng
Summary: Functionalized graphene oxide (FGO) modified with phosphorus/nitrogen compound and zinc hydroxystannate shows high thermal stability and dispersity in epoxy resin (EP), leading to significant reduction in fire, smoke, and toxicity hazards.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Hongni Wang, Xiaoqian Li, Fangfang Su, Jinliang Xie, Yangyang Xin, Weirui Zhang, Chen Liu, Dongdong Yao, Yaping Zheng
Summary: Despite its important industrial applications, epoxy resin (EP) suffers from high flammability and toxicity emission, limiting its usage. In this study, a core-shell structured ZIF67@ZIF8, further functionalized with phytic acid (PA), was successfully synthesized and used as an efficient flame retardant for EP. The results show a significant reduction in heat and smoke production, along with improved fire safety properties.
Article
Nanoscience & Nanotechnology
Zehao Wang, Dongdong Yao, Zhongjie He, Yisong Liu, Hongni Wang, Yaping Zheng
Summary: In this study, adhesive-free superhydrophobic poly(ethylene terephthalate) (PET) fabrics were fabricated using a gellable fluorinated block copolymer. The fabrics exhibit excellent superhydrophobicity and durability, and possess self-cleaning, anti-icing, oil-water separation, and self-healing capabilities. These multifunctional fabrics have the potential for applications in industry and daily life.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hongni Wang, Fangfang Su, Zehao Wang, Yangyang Xin, Dongdong Yao, Yaping Zheng
Summary: Graphene oxide (GO) was modified multiple times with functional elements to improve its dispersion and flame retardant efficiency. The resulting graphene-based flame retardant (MZP-GO) was successfully incorporated into epoxy resin (EP) to reduce flammability and smoke production. The EP composite with MZP-GO showed significant reduction in heat and smoke, with 62.9% decrease in peak heat release rate and 52.7% decrease in smoke production rate compared to pure EP. This study provides a novel strategy to fabricate high-performance flame-retardant polymer materials.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ruilu Yang, Qi Zhang, Yaping Zheng, Jian Shi, Mengzhi Li
Summary: This article introduces a liquid-like graphene oxide (GO)/silicon dioxide (SiO2) derivative for improving the UV resistance of epoxy resins. SiO2 nanoparticles were deposited in situ on the surface of GO to form a black, homogeneous, and solvent-free GO/SiO2 nanofluid. In addition, a solvent-free GO/SiO2 nanofluid/epoxy resin composite was prepared. The study shows that the GO/SiO2 nanofluid effectively reduces the loss of bending strength of epoxy resin after UV irradiation, which may be attributed to the excellent anti-UV aging properties of GO and SiO2 nanoparticles.
Article
Nanoscience & Nanotechnology
Fangfang Su, Jinliang Xie, Xiaoqian Li, Zhongjie He, Hongni Wang, Jing Zhang, Yangyang Xin, Aibo Zhang, Dongdong Yao, Yaping Zheng
Summary: Solar energy, as a renewable energy, has received extensive attention, especially in the field of solar thermal utilization. Nanofluid-based direct absorption solar collectors (DASCs) are considered an important alternative method for improving solar thermal efficiency. This study proposes a novel Ti3C2Tx-IL-based nanofluid with excellent stability, wide spectrum absorption, and efficient solar energy conversion performance. The nanofluids maintain liquid state in a wide temperature range and exhibit low viscosity. Preliminary exploration of their application in photosensitive inks shows potential in fields such as injectable biomedical materials and anti-ice coatings.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Xiaoqian Li, Zhuojun Mao, Zhongjie He, Fangfang Su, Mingtao Li, Maogang Jiang, Shuaijun Chao, Yaping Zheng, Jiahe Liang
Summary: This study proposes a general strategy for constructing yolk-shell porous ionic liquids with tunable core sizes and morphologies. The prepared yolk-shell liquids show promise in gas capture and separation, with improved adsorption properties and enhanced ability to tailor chemical composition and pore architecture.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Xiaoqian Ju, Zhiyuan Yang, Jingwen Wang, Baolu Cui, Yangyang Xin, Yaping Zheng, Dechao Wang
Summary: Due to the flexibility and versatility of layered double hydroxides (LDHs), they have great potential in various fields. However, LDH nanosheets (LDH-NSs) easily agglomerate, hindering their further application. In this study, nanoflower-like LDHs (NFLs) with exposed hydroxyl groups were prepared and combined with organic oligomers to achieve a solid-to-liquid transition. The NFL-F3 showed good fluidity and dispersion stability even after storage for 100 days. The CO2 sorption performance of NFL-F3 was significantly improved, attributed to the voids between polymers, physical sorption, and high-saturation grafting on the surface of NFL-F3. This study provides new insights into the construction of low-viscosity LDH-based nanofluids with high CO2 capacity and CO2/N-2 selectivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jinliang Xie, Xiaoqian Li, Zhongjie He, Ling Fan, Dongdong Yao, Yaping Zheng
Summary: Ionogels have advantages in thermal stability, ionic conductivity, environmental friendliness, etc., and can be widely used in flexible electronics and soft robotics. However, their poor mechanical strength and complex preparation methods limit their practical application. This study proposed a simple strategy to improve the performance of ionogels by adjusting their phase separation behavior, and found a ionogel with excellent mechanical properties.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Fangfang Su, Zhongjie He, Jinliang Xie, Jing Zhang, Weirui Zhang, Yangyang Xin, Aibo Zhang, Dongdong Yao, Yaping Zheng
Summary: In recent years, solar thermal conversion has gained significant attention due to its clean and renewable characteristics. MXene, a new photothermal material, has been studied to improve its light-thermal conversion performance. This study demonstrates that nanofluids made from MXene and CuS composite photothermal materials have improved light absorption and conversion efficiency. These nanofluids have potential applications in seawater desalination, cancer treatment, and anti-icing.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Xiaoyang Li, Peng Yang, Yongdie Deng, Dongdong Yao, Yaping Zheng
Summary: This study investigates the modification of epoxy resin using MXene nanofluids (MXene NFs) and finds that a low content of MXene NFs can significantly enhance the strength of the composite while reducing its coefficient of thermal expansion. The findings highlight the immense potential of MXene NFs as fillers for epoxy composites.
Article
Nanoscience & Nanotechnology
Hui Zhao, Jin Yun, Yali Zhang, Kunpeng Ruan, Yinsen Huang, Yaping Zheng, Lixin Chen, Junwei Gu
Summary: The fabrication of Fe3O4/expanded graphite (EG) papers can enhance the construction of phonon and electron transmission channels, improve mechanical strength, and exhibit excellent shielding effectiveness and absorptivity. Meanwhile, it shows good reliability and stability, suitable for various fields.
ACS APPLIED MATERIALS & INTERFACES
(2022)
