Article
Chemistry, Multidisciplinary
Jiaxian Liu, Zhaoqi Tan, Xiaozhong Qu, Fuxin Liang, Zhenzhong Yang
Summary: Cross-linked epoxy resin (EP) single-hole Janus hollow spheres are prepared by cross-linking induced phase separation and selective modification. The size of the hole and cavity can be controlled by adjusting the solvent content and cross-linker concentration. Using frozen wax as the core material allows for effective protection of the sphere's interior surface, enabling selective modification.
Article
Multidisciplinary Sciences
Hailong Zhang, Ting Qu, Hairong Wang, Weixing Wu, Fangfang Lu, Jiguang Ou, Genmin Zhu, Liangjun Gao, Longsheng Cheng
Summary: This study designed and synthesized interfacially active Janus hollow glass microparticles (J-HGMPs) with asymmetric wettability to achieve more efficient separation of emulsified oil droplets. Surface characteristic techniques were employed to evaluate the amphiphilic surface properties of J-HGMPs. The results showed that J-HGMPs could remove/recover more than 96% oil from oil-water mixed phase, indicating strong interfacial activities and firm anchoring at oil/water interfaces.
SCIENTIFIC REPORTS
(2023)
Review
Chemistry, Multidisciplinary
Yaqi Chen, Yan Liang, Li Wang, Mengdan Guan, Yameng Zhu, Xiaoping Yue, Xiao Huang, Gang Lu
Summary: This review discusses the recent advances in both the preparation and applications of freestanding Janus nanosheets, as well as the methods for preparing and applications in various fields.
Article
Chemistry, Multidisciplinary
Shanshan Li, Xiaobo Liu, Hao Zhang, Yuhua Mao, Tangxin Zhang, Jianli Wang
Summary: This study reports the fabrication of shape-tunable polymeric Janus nanoparticles with hollow cavities derived from polymerization induced self-assembly based crosslinked vesicles for the first time. These novel nanoparticles can be applied to a wide range of applications where nanoparticles with controllable hollow morphologies are needed.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Haifeng Tong, Juan Wang, Liang Qi, Qunyu Gao
Summary: Janus particles (J-OSPs) based on chitosan nanoparticles (CSNPs) and octadecenyl succinic anhydride starch (OSPs) were synthesized using Pickering emulsion method and electrostatic interaction. J-OSPs exhibited various asymmetric structures and their surface characteristics were altered, making them superior in terms of emulsion stability by enhancing hydrophobicity and adjusting surface charges.
CARBOHYDRATE POLYMERS
(2023)
Article
Polymer Science
Giovanni Russo, Marco Lattuada
Summary: Post-synthesis modifications have been used to prepare non-spherical polymer particles with Janus characteristics. By selectively dissolving one face of the Janus colloids, intriguing shapes such as mushroom-like and Janus dimpled particles can be obtained. The composition of the PMMA face and the addition of a cross-linker also affect the particles' morphology. This method provides a new approach for controlling the shape of polymer particles.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yang Yang, Heqin Huang, Dan Xu, Xiaojie Wang, Ye Chen, Xiaohui Wang, Kai Zhang
Summary: This study explores the preparation of complex 3D structures with aligned cellulose nanocrystals (CNCs) from dynamic hydrogels, forming pseudo catenoid hollow xerogels through mechanical stretching and air-drying. The mechanical properties of the pseudo catenoid architecture are controlled at two stages on diverse length scales by the aligned CNCs and the geometry of the xerogels, offering a new perspective for designing advanced materials with tailored mechanical properties and functions.
Article
Biotechnology & Applied Microbiology
Zi-Yi Feng, Tao-Tao Liu, Zhen-Tao Sang, Zhen-Sheng Lin, Xin Su, Xiao-Ting Sun, Hua-Zhe Yang, Ting Wang, Shu Guo
Summary: By leveraging the phase separation phenomenon in micro-droplets, polymer-lipid Janus particles were synthesized on a microfluidic flow focusing chip. These particles can achieve drug release under various conditions, such as triggering by temperature or pH levels.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ievgen. Pylypchuk, Maria Karlsson, Par A. Linden, Mikael. E. Lindstrom, Thomas Elder, Olena Sevastyanova, Martin Lawoko
Summary: Studies have found that the size of lignin nanoparticle (LNP) is determined by the molecular weight (M-w) of lignin. However, a deeper understanding of the role of molecular structure in LNP formation and its properties is needed to establish a solid foundation for structure-property relationships. This study demonstrates that, for lignins with similar M-w, the size and morphology of LNPs depend on the molecular structure of the lignin macromolecule. The molecular structure determines the molecular conformations, which in turn affect the inter-molecular assembly, resulting in differences in size and morphology between LNPs.
Article
Polymer Science
Farnaz Amani, Elham Dehghani, Mehdi Salami-Kalajahi
Summary: The solubility issues of polypyrrole (PPy) as a conductive polymer have been improved by grafting pH and temperature responsive polymers on the surface of PPy nanoparticles through surface-initiated atom transfer radical polymerization (SI-ATRP). The synthesized smart particles exhibited dual pH-sensitive and thermoresponsive behavior, with snowman-like and dumbbell-like Janus structures observed in the morphology. The accuracy of synthesis was confirmed through various spectroscopy and microscopy techniques.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Rajarshi Roy Raju, Joachim Koetz
Summary: This study reports a modified approach for the batch scale preparation of completely engulfed core-shell emulsions or partially engulfed Janus emulsions with colorful optical properties. The in situ reduction of gold chloride at the olive oil interface leads to the formation of compartmentalized emulsion droplets in water, with time-dependent morphological transformations observed depending on the presence of chitosan or presynthesized AuNPs. The Pickering effect of AuNPs brings color effects to microdroplets and induces surprising self-assembly.
Article
Engineering, Environmental
Weixing Wu, Genmin Zhu, Beifu Wang, Ting Qu, Ming Gao, Yuanlu Zhu, Jiangyi Yan, Guiliang Li, Hailong Zhang, Lihong Nie
Summary: In this study, recyclable Janus hollow silica micron particles (J-HSMPs) were successfully synthesized and their application in treating oily wastewater was tested. The experimental results showed that J-HSMPs had excellent oil removal capability and reusability, effectively removing crude oil and diesel oil. The amphiphilicity of J-HSMPs allowed them to aggregate tiny oil droplets into millimeter-sized droplets and easily separate them from the water phase.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Elahe Pourakbar, Esmail Sharifzadeh
Summary: In this study, HO Janus (HOJ) micro- and nanoparticles were synthesized through buoyancy-induced desymmetrization process, and their effects on the thermal conductivity of binary polymer blends were investigated. The results showed that the presence of HO micro- and nanoparticles could increase the conduction coefficient of the blends, while their simultaneous presence in both phases had a significantly more impact on the thermal conductivity.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Analytical
Ruixuan Hu, Xiaolong Li, Jian Xu, Ya Cheng, Min Zhang, Guoyue Shi
Summary: In this study, a three-dimensional microfluidic chip was fabricated using ultrafast laser-processing technology for the continuous synthesis of semiconducting polymer nanoparticles (SPNs) with tunable size. The efficient mixing and powerful vortices of the chip ensured a homogeneous distribution of SPNs and prevented aggregation during synthesis. The integrated high-performance fluorescence of SPNs and the 3D microfluidic chip enabled the development of an online sensing platform for ratiometric fluorescence assays, achieving low limits of detection for H2O2 and glucose. This platform offers new opportunities for facile nanoparticle production and online sensing of biomarkers.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Ken Mukai, Yuki Fujii, Toyoko Suzuki, Hideto Minami
Summary: Elastic/glassy Janus composite particles with snowman-like shape were prepared by polymerization of benzyl methacrylate in the presence of cross-linked silicone particles. These composite particles exhibited two different stiffness properties, combining the elasticity from silicone phase and the hardness from the PBzMA lobe.
COLLOID AND POLYMER SCIENCE
(2022)
Article
Engineering, Chemical
Dimitrios Meimaroglou, Daniela Florez, Guo-Hua Hu
Summary: A novel modeling framework is presented for the peroxide-initiated radical polymerization of styrene in the presence of ground-tire rubber particles. The model takes into account the effects of rubber particles and their additives on the reaction, successfully predicting the behavior under different conditions.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Hui Zhao, Wei-Chen Gao, Qing Li, Muhammad Rafiullah Khan, Guo-Hua Hu, Yang Liu, Wei Wu, Chong-Xing Huang, Robert K. Y. Li
Summary: This review presents the recent preparation methods for superhydrophobic polyurethane (SHPU) and discusses its potential applications in various fields.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Chemical
Wei-Yun Ji, Tian-Tian Li, Si-Bo Cheng, Lian-Fang Feng, Xue-Ping Gu, Cai-Liang Zhang, Guo-Hua Hu
Summary: This study reveals that in reactive polymer blending, flow/mixing can both promote copolymer formation by creating interfaces and enhance collisions between reactive groups, as well as potentially pull the copolymer out of the interfaces and migrate it to one of the two polymer components of the blend, reducing its compatibilization efficiency.
Article
Chemistry, Applied
Yiheng Song, Tao Wu, Jiangkai Bao, Menghan Xu, Quanling Yang, Liping Zhu, Zhuqun Shi, Guo-Hua Hu, Chuanxi Xiong
Summary: Flexible porous piezoelectric aerogel films based on TOCN and Mo-S2 nanosheets were developed, exhibiting good piezoelectric properties. The aerogel film with 6 wt% MoS2 showed the best output performance, generating high open circuit voltage and short-circuit current.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Chemical
Heng-Kuan Zhang, Ya-Ran Yin, Xu-Qi Pan, Xian-Ming Zhang, Wen-Xing Chen, Guo-Hua Hu
Summary: This study investigates the evolution of normal force on a smooth plate immersed in Newtonian and yield stress fluids during dip coating, considering factors like withdrawal velocity, liquid rheological property, and plate roughness. The control forces for coating in each of the four stages of force variation are determined, providing insight into the film-formation mechanism and surface tension measurement in dip coating.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Chemical
Huang-He Feng, Xi Chen, Xue-Ping Gu, Lian-Fang Feng, Deng-Fei Wang, Guo-Xing Yang, Yu-Xin Gao, Cai-Liang Zhang, Guo-Hua Hu
Summary: Molecular weight distribution (MWD) and short chain branching distribution (SCBD) have a significant impact on the performance of linear low-density polyethylene (LLDPE). A model based on a non-standard polymerization reaction scheme is developed for the copolymerization of ethylene and alpha-olefin in a gas phase reactor. Experimental MWD and SCBD are simultaneously deconvoluted, leading to physically more relevant results. Parameter reduction and parameter estimability analysis are conducted to obtain a subset of reliable parameter estimation. The model based on the estimated parameters accurately predicts the MWD and SCBD of LLDPE grades obtained from a pilot-scale gas phase polymerization process.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Qiong Tian, Hang Zhao, Rui Zhou, Tengfei Li, Jianping Huang, Wei Tong, Ruijie Xie, Qingsong Li, Zhiyuan Liu, Guanglin Li
Summary: In this study, a monolayer porous film electrode with high breathability and stretchability was fabricated via the breath figure method and metal sputtering, and it was successfully applied in epidermal electrophysiological monitoring. The electrode showed comparable contact impedance with the gold standard Ag/AgCl gel electrode and demonstrated superior sweat resistance. This research provides a new approach to improve the breathability of epidermal electronics.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Cheng Chang, Lian-Fang Feng, Xue-Ping Gu, Cai-Liang Zhang, Lian-Kui Dai, Xi Chen, Guo-Hua Hu
Summary: In this study, an in situ Raman spectroscopy method was developed to determine the esterification percentage (Ester%) in real time, which is a key quality index in polyester industries. The method involves monitoring the Raman spectra of the polymerization process and using a background subtraction algorithm to identify and quantify the ester and carboxylic groups. The calculated Ester% values based on Raman peak areas were found to be less noisy and in better agreement with those obtained by titration. This in situ Raman spectroscopy method allows for real-time monitoring and quantification of Ester% during the polymerization process.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Rui Xue, Hui Zhao, Ze-Wei An, Wei Wu, Yan Jiang, Peng Li, Chong-Xing Huang, Dean Shi, Robert K. Y. Li, Guo-Hua Hu, Shuang-Fei Wang
Summary: A flexible photonic film with selfhealing ability (FPFS) was prepared by combining waterborne polyurethane containing dynamic covalent disulfide bonds (SSWPU) with cellulose nanocrystals (CNC). The FPFS exhibited excellent toughness under various mechanical actions and could self-heal within 2 hours at room temperature. It also showed reversible color change when soaked in solvents and could form visible patterns under polarized light when painted with ethanol ink. This study provides new perspectives in the areas of self-healing, biological anticounterfeiting, solvent response, and flexible photonic materials.
Article
Chemistry, Multidisciplinary
Qiong Tian, Hang Zhao, Xin Wang, Ying Jiang, Mingxing Zhu, Huoerhute Yelemulati, Ruijie Xie, Qingsong Li, Rui Su, Zhengshuai Cao, Naifu Jiang, Jianping Huang, Guanglin Li, Shixiong Chen, Xiaodong Chen, Zhiyuan Liu
Summary: Long-term epidermal electrophysiological (EP) monitoring is crucial, but motion artifacts caused by hair impede stable contact with dry epidermal electrodes. To address this, the hairy-skin-adaptive viscoelastic dry electrode (VDE) is developed, which fills skin wrinkles and maintains stable interface impedance for up to 48 days and 100 cycles. The VDE effectively shields hair disturbances in electrocardiography (ECG) and electromyography (EMG) monitoring, making it an ideal solution for EP monitoring on hairy skin, including EEG monitoring without the need for a cap or bandage.
ADVANCED MATERIALS
(2023)
Article
Polymer Science
Lan Guo, Yunsheng Xu, Xianming Zhang, Guo-Hua Hu
Summary: Nanoparticles are used to compatibilize immiscible polymer blends. Silica nanoparticles (SiO2) were used in this study to compatibilize polyamide 6 (PA6)/polycarbonate (PC) blends. The localization of SiO2 at the interfaces between PA6 and PC was achieved through grafting a methacrylic monomer onto SiO2 and copolymerizing it with styrene (St) and 3-isopropenyl-alpha,alpha'-dimethylbenzyl isocyanate (TMI). The presence of SiO2-PST significantly decreased the PC domain diameter and improved the mechanical properties of the PA6/PC blend.
Article
Engineering, Chemical
Huiwen Yu, Zhongwen Zhao, Baiping Xu, Guo-Hua Hu, Cecile Lemaitre, Yanhong Feng
Summary: This study investigates the residence time distribution (RTD) and flow patterns in an asymmetrical twin-screw extruder (ATSE) through visualizing the process using a transparent barrel. The results show that the mean residence time (t) in the ATSE is larger than that in a classical TSE, indicating the occurrence of backflow in the intermeshing regions between the low flight and the inner wall of the barrel.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Hong-Wei Li, Jia-Le Zhang, Rui Xue, Ze-Wei An, Wei Wu, Yang Liu, Guo-Hua Hu, Hui Zhao
Summary: This research proposes a novel solvent etching deposition method to combine waterborne polyurethane with MOF to prepare a self-healable and recyclable adsorption membrane. The results show that the WPU-SS-MOF membrane has excellent mechanical and self-healing properties, and it also exhibits outstanding adsorption and recycling capacity for anionic dyes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Shuai Tang, Jiao Li, Runguo Wang, Jichuan Zhang, Yonglai Lu, Guo-Hua Hu, Zhao Wang, Liqun Zhang
Summary: Elastomers, including natural rubber and bio-based synthetic elastomers, play a crucial role in society. While natural rubber has unique properties, its limited variety of molecular structures may not meet increasing demands. On the other hand, bio-based synthetic elastomers offer a wider range of molecular structures and have less impact on environmental pollution, promoting the sustainable development of the elastomer industry.
Article
Polymer Science
Dongdong Ren, Shiwei Wang, Xiaoxu Dong, Tiantian Wang, Tong Song, Yanxin Wang, Guo-Hua Hu, Qian Li
Summary: The study demonstrates that hydrogels prepared using acrylamide, acrylic acid, and hexamethylene diisocyanate trimer exhibit ultra-high strain, good self-recovery, and strong adhesion properties. These hydrogels show strong adhesion to various materials and the adhesion ability increases over time as water gradually evaporates. They are expected to have a promising future in the fields of flexible wearable materials and adhesives.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2022)
