Article
Chemistry, Multidisciplinary
Seon Ae Hwangbo, Minjeong Kwak, Jaeseok Kim, Tae Geol Lee
Summary: This study investigated the use of focused ultrasound to prepare surfactant-free waterborne TiO2 nanoparticles with excellent dispersion stability.
Article
Polymer Science
Bo-Young Lee, Seoungju Park, Dae-Won Chung, Keon-Soo Jang
Summary: This study examined the dispersity of silica nanoparticles (SNPs) in hydrophilic epoxy and hydrophobic polystyrene (PS) matrices, finding that alkyl-functionalized SNPs were more uniformly dispersed in the PS matrix. Among the different alkyl chains, propyl-functionalized SNPs exhibited the most homogeneous dispersion, leading to enhanced mechanical properties. Additionally, the smallest diameter SNPs (60 nm) showed slight enhancement in mechanics and dispersion compared to larger diameter SNPs (120 and 180 nm).
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Physical
Hiu To Ip, Liangdong Liu, Liangzhi Hong, To Ngai
Summary: Organic-inorganic nanocomposite particles were successfully prepared via Pickering emulsion polymerization using non-functionalized silica nanoparticles. Monodisperse nanocomposite particles with high silica incorporation efficiency were obtained. The wetting effect and electrostatic interaction were found to facilitate the adhesion of silica nanoparticles onto the growing latex particles.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Zhiwei Su, Jing Li, Ruixuan Jiang, Shujie Zhang, Chengkai Jin, Feng Ye, Bingcan Ke, Mengjun Zhou, Jinhui Tong, Hyesung Park, Fuzhi Huang, Yi-Bing Cheng, Tongle Bu
Summary: A green and cost-effective strategy using glycerol to synthesize high-quality SnO2 nanocrystals at low temperatures was developed, achieving greatly enhanced power conversion efficiency for flexible perovskite solar cells. The glycerol-modified SnO2-nanocrystal isopropanol dispersion approach also enabled the fabrication of large-area flexible perovskite solar mini-modules with good stability.
Article
Chemistry, Physical
Jie Wang, Zongchun Gao, Xianhua Jin, Donglin Fang, Jin Xu, Xuerong Fan
Summary: This study focused on the effects of two hydrophilic groups on the aggregation behavior of WPET, as well as the effects of concentration, temperature, and electrolytes. The results showed that a higher sulfonate group content in WPET leads to higher stability, while the effect of PEG content on dispersion stability is unclear. These findings can effectively control and improve the stability of WPET solutions and provide guidance for the prediction of dispersion and stability for molecules not yet synthesized.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Applied
Wei Zhao, Zilu Liu, Song Yang, Na Xu, Xiaokun Li, Gan Luo, Zhenjiang Wu, Shoujun Liu, Chao Yang
Summary: An aqueous carbon black slurry was prepared using esterified polystyrene-maleic anhydride as a dispersant for carbon black. The effects of grinding time and dispersant addition on particle size and dispersion stability were investigated. The results showed that isobutanol-modified SMA had a stronger dispersion effect and the best stability was achieved with 4% dispersant addition and 120 min grinding time. The study provides guidance for selecting dispersants for carbon black in aqueous media and confirms the practicality of black color pastes in gel inks.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Da In Kim, Hye Ji Kim, Ju Hyang Park, Ki Hak Kim, Hosu Kang, Jongbok Kim, Ping Lu, Hyungju Ahn, Dong Choon Hyun
Summary: This work describes the fabrication of magnetic polymer dimers with controlled surface anisotropy, showing strong magnetic response and excellent reusability in catalytic applications. By manipulating the composition of multilayer shells, different surface anisotropies can be introduced to the dimers, making them potentially useful for stabilizing immiscible oil-water mixtures as well.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Satish K. Nune, Quin R. S. Miller, H. Todd Schaef, Tengyue Jian, Miao Song, Dongsheng Li, B. Peter McGrail, Vaithiyalingam Shuttanandan
Summary: Injecting fluids into deep underground geologic structures is crucial for managing greenhouse gas emissions and facilitating energy extraction operations. Recent research has shown that metal-organic frameworks can be used as low-frequency absorptive-acoustic metamaterials injected into the subsurface to enhance geophysical monitoring tools. This study found that the surface characteristics of nanoparticles play a critical role in their colloidal stability and transport.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Kui Wang, Lu Shen, Guangyuan Zhou
Summary: Controlled individual and partial nanofibrous polyethylenes with high second melting point were obtained through ethylene-confined polymerization, supported by PPM-loaded Cp2TiCl2 catalysts. PPM-supported Cp2TiCl2 catalysts with the smallest average pore diameter showed the highest polymerization activity, leading to the formation of different polyethylene morphologies. The high T-m2 values of the polyethylene were attributed to the entanglement of polyethylene chains in amorphous layers caused by the unique cross-linked multimodal pore structure of the PPM supports, indicating good stability even after storage or dissolution in good solvents.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Polymer Science
Wen Xu, Depeng Yin, Caiyuan Pan, Chao Liu, Chunyan Hong
Summary: In this study, polymer nanoparticles with tunable room-temperature phosphorescence emission were successfully designed using polymerization-induced self-assembly (PISA). The morphology evolution of the nanoparticles was found to affect the phosphorescence intensity, and these nanoparticles could be used for information encryption.
Article
Polymer Science
Yingrui Nie, Hong Man, Shimin Shao, Yang Wang, Zhifei Wang, Yong Jiang
Summary: This study comprehensively investigated the impact of trace water content on the size of polystyrene microspheres and explored the varying effects of different hydration levels on particle nucleation and growth mechanisms. The results showed that within a certain water content range, variations in water content only induced slight variations in microsphere diameter. However, when the water content reached a certain level, there was an exponential decrease in microsphere size with increasing water content.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Uiseok Hwang, Junyoung Kim, Na-Yeon Kim, Kisuk Choi, June-Young Chung, Taesung Kim, Jonghwan Suhr, Jae-Do Nam
Summary: The study introduces a novel method for preparing hierarchical core-shell ceria/silica microspheres, which control the surface charge of particles by adjusting the thickness of the outer shell, enhancing product stability and utilization windows, showing great potential for various applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xianjun Hou, Haijun Liu, Xiaoxue Li, Hua Jiang, Zekun Tian, Mohamed Kamal Ahmed Ali
Summary: By systematically investigating the effects of various factors on the dispersion stability of Al2O3 nanoparticles in polyalphaolefin oil, this study optimized the preparation conditions and demonstrated that the addition of oleic acid as a surfactant can improve the stability of nanofluids. The results also showed that there is an optimal match between ultrasonication power and duration, and a certain concentration of oleic acid is required to achieve excellent dispersion stability in nanolubricants.
JOURNAL OF NANOPARTICLE RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Adam Czajka, Sarah J. Byard, Steven P. Armes
Summary: This article introduces a novel post-polymerization encapsulation strategy that achieves shape-shifting behavior through temperature control, using thermoresponsive amphiphilic copolymers and functionalized silica nanoparticles to prepare vesicles with high loading efficiency. The release of silica nanoparticles from the vesicles is achieved by cleaving disulfide bonds, enabling thermally-triggered release.
Article
Materials Science, Composites
Zaid G. Mohammadsalih, Beverley J. Inkson, Biqiong Chen
Summary: In this study, nanocomposites of polystyrene (PS) and graphene oxide (GO) were prepared using solution blending method, and the effect of different mixing periods on the structure and properties of the PS/GO nanocomposites was investigated. The results showed that controlling the mixing time could achieve excellent dispersion of nano-sheets, enhancing the thermal and thermomechanical properties of the composites.
POLYMER COMPOSITES
(2021)