Review
Chemistry, Multidisciplinary
Deepak Rawtani, Swath Satish, Piyush Rao
Summary: Industrial and academic communities are closely following the advancements in polymer nanocomposite technology, which aims to enhance specific characteristics through the combination of nanomaterials. The properties of resulting nanocomposites depend on factors such as the choice of clay, pretreatment, choice of polymers, and the method of incorporating polymers. The addition of nanoparticles to polymers significantly changes the properties of the composites, with the effects relying on the processing and surface treatment of the nanomaterials. Halloysite nanotubes (HNTs) have surface features that allow for surface modifications, and their inter-tubular and interfacial interactions with polymers enhance the thermal properties of the nanocomposites. Halloysite has been recognized as a suitable nanomaterial to improve the thermal stability and flame retardancy of resulting nanocomposites.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yunfei Guo, Anna M. M. Cristadoro, Julian Kleemann, Stefan Bokern, Rint P. P. Sijbesma, Zeljko Tomovic
Summary: Polyurethane can be modified with thermally stable aromatic imide structures to enhance its mechanical and thermal properties. In this study, imide-containing isocyanate-terminated prepolymers were synthesized in solvent-free conditions and used to prepare PUI elastomers with improved char formation and stiffness. The aromatic PUI elastomer also showed enhanced flame retardancy. This work demonstrates the potential use of imide prepolymers in high thermal stability and flame retardant PU applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Manufacturing
Fuli Xu, Yuan Wang, Yitong Feng, Fei-Fei Chen, Ying-Jie Zhu, Yan Yu
Summary: A composite paper composed of PEI-modified GO and HAP nanowires has been developed, showing improved thermal stability and flame retardancy. The composite paper provides continuous fire warning and maintains mechanical strength and high flexibility after fire attacking.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Polymer Science
Xianting Wang, Hongyi Tu, Haofeng Xiao, Junyi Lu, Jie Xu, Guangxin Gu
Summary: A novel P-N flame-retardant (PON) was synthesized using diphenyl phosphoryl chloride and piperazine. The thermal stability, combustion behavior, and flame retardancy of PS composites containing PON and different char-forming agents were investigated. The PS/10% PON/10% EG composite exhibited the highest LOI value of 25.8% and significantly reduced pHRR, THR, and TSP compared to neat PS, demonstrating excellent flame retardancy. The flame-retardant mechanism of the composite was discussed based on SEM, TG-IR, and PY-GC/MS analysis.
Article
Materials Science, Composites
Xinming Ye, Zhiqing Han, Panpan Tian, Tong Liu, Xiangning Meng, Chengke Yuan, Wensheng Wang, Yingchun Li
Summary: Cu-Ph-POSS was synthesized by grafting Cu into Si-O-Si cage, and used to solve the problem of black smoke generated during combustion of epoxy resin (EP) in high fire safety fields. The incorporation of 2 wt% Cu-Ph-POSS into EP significantly improved thermal stability and reduced peak heat release rate (p-HRR), peak smoke production rate (p-SPR), and peak CO production rate (p-COP) by 56.8%, 44.4%, and 59.4%, respectively. The presence of polycyclic aromatic and Si-C compounds in the interior char layers effectively inhibited the release of heat, smoke, and toxic volatiles, imparting superior flame retardant and smoke suppression performances to the fabricated EP composites.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Shahid Iqbal, Sohail Nadeem, Mirza Nadeem Ahmad, Mohsin Javed, Hashem O. Alsaab, Nasser S. Awwad, Hala A. Ibrahium, Eslam B. Elkaeed, Fwzah H. Alshammari, Norah Alwadai, Mohammed Issa Alahmdi, Ali Bahadur, Sadaf ul Hassan, Ayesha Mohyuddin
Summary: Polyorthochloroaniline (POC) nanocomposites with montmorillonite (MMT) clay (POC/MMT) have distinctive properties and wide applications. The preparation of POC/MMT clay nanocomposites was achieved chemically. The influence of MMT clay on the characteristics of POC was investigated, and the results showed improved flame retardancy and thermal stability.
FRONTIERS IN MATERIALS
(2022)
Article
Chemistry, Applied
Jie Wang, Yu Guo, ShunPing Zhao, Zhihao Zhu, Yan Huang, Tianhao Tian, Yongcun Zhou, Lianghui Bi
Summary: In this study, a structurally novel halogen-free oligomer poly (benzoguanamine phospholipamide) (BQDP) was successfully synthesized and used as an effective flame retardant for epoxy resins. BQDP showed improved limited oxygen index (LOI) values and UL-94 ratings, as well as excellent smoke suppression performance. The combination of phosphaphenanthrene and triazine demonstrated a synergistic effect, resulting in outstanding flame-retardant properties in both gaseous and condensed phases.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Chemistry, Applied
Corneliu Hamciuc, Tachita Vlad-Bubulac, Diana Serbezeanu, Gabriela Lisa, Ion Anghel, Dana Maria Preda
Summary: In this study, a novel polyphosphonate and halloysite nanotubes were incorporated into epoxy resin to prepare environmental-friendly nanocomposites with improved flame retardancy.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2023)
Article
Materials Science, Composites
Joon Fatt Wong, Jia Xin Chan, Azman Hassan, Zurina Mohamad, Shahrir Hashim, Jeefferie Abd Razak, Yern Chee Ching, Zaini Yunos, Ridwan Yahaya
Summary: This study investigates the properties of synthetic wollastonite nanofibers reinforced polyoxymethylene nanocomposites. The results showed that the mechanical strength, thermal stability, and flame retardancy of the nanocomposites were improved, indicating their potential use in automotive applications.
POLYMER COMPOSITES
(2022)
Article
Agricultural Engineering
Jinfeng Li, Wei Jiang
Summary: A novel flame retardant containing high amounts of P and N elements was designed and grafted onto cotton fabric via P-O-C covalent bonds, showing improved flame retardancy and durability. The treated cotton exhibited lower peak heat release rate, total heat release, and initial decomposition temperatures, as well as increased carbon residue during combustion, indicating the formation of an expanded char layer. Various spectroscopic techniques confirmed the flame retardant mechanism, and the mechanical properties of the treated cotton remained suitable for use after treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Polymer Science
Xinxing Zhang, Qingyin Wang, Shaoying Liu, Lilei Zhang, Gongying Wang
Summary: The newly synthesized Schiff base flame retardant monomer NBA(n)PET showed improved properties in cross-linking temperature, poly-condensation time, and thermal stability, with wider potential applications.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Zilong Zhang, Ke Zhang, Kaili Xie, Ying Bao, Xiaohan Li, Jiateng Huang, Xiaojie Li, Wei Wei
Summary: In this study, a eugenol allyl ether grafted polysiloxane (PMES-Allyl) was synthesized and used to modify BD resin to improve its toughness and flame retardancy. The addition of 15 wt% PMES-Allyl resulted in well-dispersed particles in the resin matrix, leading to an increase in crosslinking density. The cured BDPA15% resin exhibited improved mechanical properties, comparable thermal stability, and excellent flame retardancy.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Zhu-Bao Shao, Tian-Ci Wang, Xue-Bao Lin, Xiang Song, Jing Cui, Shuai Zhang, Longxiang Zhu
Summary: A nanolayered double hydroxide/ ammonium polyphosphate (BLDH@APP) composite was prepared to reduce fire hazard and improve the mechanical performances of epoxy resin (EP). The 4B-LDH@APP/EP achieved the UL-94 V-0 rating and showed superior flame-safety performance compared to 4APP/EP. The fire growth rate, peak heat release rate, and peak smoke production rate of 4B-LDH@APP/EP decreased significantly, which can be attributed to the excellent synergistic flame-retardant effect among boron, LDH, and APP.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Thermodynamics
Yiming Wang, Cui Li, Hui Liu, Lili Ma, Dayong Jiang, Xin Wen, Tao Tang
Summary: In this study, the effect of molecular sieve 4A (MS4A) as a synergist on the thermal stability and flame retardancy of PBS/piperazine pyrophosphate (PAPP) composites was investigated. The results showed that the addition of MS4A effectively improved the thermal stability of PBS/PAPP composites in both nitrogen and air atmospheres. The combination of PPAP/MS4A mainly imparted its flame retardancy through a condensed phase mechanism.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Engineering, Manufacturing
Zhengdong Wang, Tong Zhang, Mengyuan Hao, Mengli Li, Yuanhang Zhou, Wenjie Sun, Jinkai Wang, Yonghong Cheng
Summary: In this study, a solution using nitrogen and boron co-effect flame-retardant (MB-BNNS) functionalized boron nitride nanosheets was presented to enhance the thermal conductivity and flame retardance of epoxy resin while maintaining excellent electrical insulation properties. The MB-BNNS were prepared by grafting MB onto boron nitride surfaces through a simple ball-milling and eco-friendly water scrubbing process. Epoxy composites with uniformly dispersed MB-BNNS were obtained via wet processing. The 5 vol% EP/MB-BNNS composite exhibited optimal comprehensive performance, with 108% increase in thermal conductivity, 36.44% and 32.06% decrease in peak heat release rate and total heat release rate, respectively, and a slight decrease in dielectric breakdown strength. Furthermore, the release percentages of toxic and combustible gases in the EP/MB-BNNS composite system were significantly reduced, as measured through in-situ measurement.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Review
Chemistry, Physical
Hongbo Gu, Wenhao Xie, Ai Du, Duo Pan, Zhanhu Guo
Summary: This review summarizes the common features, synthesis methods, and research progress of electrode materials used in the electrocatalytic process for the treatment of antibiotics in the last five years. The removal mechanism and transformation pathways of antibiotics in the electrocatalytic oxidation and reduction processes are presented, while considering the cost aspect and proposing several developing directions for further research.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Industrial
Ying Cheng, Yanshan Gao, Lei Wang, Fei Tao, Qing-Guo Wang
Summary: This paper studies the operational robustness of the IIoT platform for Manufacturing Service Collaboration (MSC) and proposes a graph-based operational robustness analysis method. By modelling the IIoT platform operation network for MSC as an interdependent network structure, the effectiveness of MSC under uncertainty effects can be quantified.
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Mengying Lian, Jiaxin Sun, Dawei Jiang, Miaojun Xu, Zijian Wu, Ben Bin Xu, Hassan Algadi, Mina Huang, Zhanhu Guo
Summary: In this work, a self-powered system based on a triboelectric-electromagnetic hybrid pipeline energy harvesting module is demonstrated. Rabbit fur and PTFE are used as triboelectric electrodes to fabricate disk-type soft-contact TENGs to collect the mechanical energy of water flow and convert it into electrical energy. The hybridization of electromagnetic generator module and TENGs module to form TEHNG can improve the electrical output performance, especially the current output, and enable simultaneous energy harvesting and data monitoring in harsh environments.
Article
Chemistry, Physical
Dedong Wang, Jie Jin, Yan Guo, Hu Liu, Zhanhu Guo, Chuntai Liu, Changyu Shen
Summary: This study successfully prepared a waterproof magnetic carbon foam with high-efficient electromagnetic wave absorption performance. By tuning the pyrolysis temperature, the foam achieved high efficient EMW absorption capacity along with high conductivity, hydrophobicity, and special 3D porous structure, demonstrating its promising potential as a multifunctional material.
Article
Environmental Sciences
Weicong Wang, Junming Shi, Keqi Qu, Xinrui Zhang, Wenjing Jiang, Zhanhua Huang, Zhanhu Guo
Summary: In this study, composite films with adjustable layers and controlled slow-release time were prepared using sodium alginate, chitosan, and activated charcoal as raw materials to improve the soil amendment performance. The prepared multilayer films showed a wide pH response range and excellent slow-release time. After 700 hours of slow-release, the cumulative release of humic acid increased from 19.87% to 66.72% with the increase in pH from 4.0 to 10.0. In addition, after 50 days of remediation in different types of soils, the nutrient contents were increased and sustained crop growth promotion effect was observed. This study demonstrates the promising application of multilayer films in soil remediation and agricultural production.
ENVIRONMENTAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Shixuan Feng, Futian Zhai, Huahua Su, Deepak Sridhar, Hassan Algadi, Ben Bin Xu, Rami Adel Pashameah, Eman Alzahrani, Hala M. Abo-Dief, Yong Ma, Tingxi Li, Zhanhu Guo
Summary: This article summarizes the classification and preparation methods of metal organic frameworks (MOFs) derived materials, as well as their wave absorption mechanisms. It also details the advantages and disadvantages of these materials in electromagnetic wave absorption research and provides a reference for further studies.
MATERIALS TODAY PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Dheeraj Kumar Maurya, Ragupathy Dhanusuraman, John Zhanhu Guo, Subramania Angaiah
Summary: In this study, a nanofillers-reinforced 3D-electrospun nanofibrous hybrid polymer membrane (ESHPM) was prepared by electrospinning technique to overcome the challenges of poor thermal stability and low ionic conductivity in an electrolyte. The ESHPM exhibited excellent properties such as morphology, porosity, crystallinity, thermal stability, dimensional stability, operating potential window, and ionic conductivity. This research offers a potential solution for developing high-performing sodium-ion capacitors (NICs) with high energy and power densities.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Dan Ping, Feng Yi, Guiwei Zhang, Shide Wu, Shaoming Fang, Kailong Hu, Ben Bin Xu, Junna Ren, Zhanhu Guo
Summary: A novel ammonium chloride (NH4Cl)-assisted pyrolysis method was used to create single-atomic nickel (Ni)-based sheet-like electrocatalysts with abundant Ni-N4 active sites. Electron microscopy and X-ray absorption fine structure analysis confirmed the atomically dispersed Ni species anchored by N in Ni-N4 structure. The addition of NH4Cl optimized the mesopore size and concentrations of pyridinic N and Ni-N4 species, leading to outstanding CO2 reduction performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mrinal Kanti Dash, Amul Jain, Leena Dhruw, Santanab Giri, Zhanhu Guo, Gourisankar Roymahapatra
Summary: Pyridine-M2+ [M = Mg, Ca] hosts have been identified as potent H2 storage material. The study explores the adsorption of H2 molecules on pyridine-Mg2+ and pyridine-Ca2+ building blocks, and finds that the aromaticity remains after adsorption. The stability of the hosts is validated through chemical hardness, aromaticity, and molecular dynamic simulations. The adsorption of H2 molecules is mainly of quasi-molecular type, with a stable adsorption energy range.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Tong Li, Zhenzong Xu, Ben Bin Xu, Zhanhu Guo, Yunhong Jiang, Xuehua Zhang, Maryam Bayati, Terence Xiaoteng Liu, Yan-Hua Liu
Summary: Piezoresistive composite elastomers have great potential in wearable and flexible electronic applications due to their high sensitivity, excellent frequency response, and easy signal detection. A composition membrane sensor with an interlocked structure has been developed, showing outstanding pressure sensitivity, fast response time, and low temperature drift features. The sensor exhibits significantly improved pressure sensitivity, fast reaction speed, and excellent cycle life compared to a flexible MXene-based flat sensor.
Article
Chemistry, Physical
Xian-Ya Fang, Long Qin, Jiashuai Liu, Haonan Shi, Xiu-Li Sun, Xiaokang Kuang, Yanshan Gao, Yong Tang
Summary: In this study, a new class of oxazoline-amine zirconium complexes were synthesized and fully characterized. These complexes showed high activity in ethylene homopolymerization and ethylene/1-octene copolymerization.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Physical
Bingxin Qu, Yanan Zhao, Ping Song, Yanshan Gao, You-Yun Zhou, Xiu-Li Sun, Qiang Fu, Xiaoshan Ning, Junfang Li, Xiaokang Kuang, Yong Tang
Summary: Chain walking is a unique process that allows control over polyolefin branch type, density, topology, branch stereochemistry, and more. By introducing a ring strained monomer like norbornene, the chain walking process can be perturbed to produce copolymers with unique microstructures.
Article
Chemistry, Physical
Haoran Ye, Yang Shi, Ben Bin Xu, Zhanhu Guo, Wei Fan, Zhongfeng Zhang, Daniel M. Mulvihill, Xuehua Zhang, Pengju Shi, Ximin He, Shengbo Ge
Summary: BC-CaCl2, an innovative and environmentally friendly wood-based material, developed from natural pinewood, with high-density cross-linking structure and excellent properties, represents a viable alternative to petrochemical-based materials.
Article
Engineering, Chemical
Junhua Li, Lingshu Gao, Junmao Hong, Xiaofeng Shi, Sifang Kong, Jingyu Wang, Hassan Algadi, Benbin Xu, Zhanhu Guo
Summary: Terephthalic acid reformed Al/Zn metal organic nanoflake functionalized with trie-thylamine (T-AlZn) exhibits remarkable performance in removing trace lead (II) ions (Pb2+), with an adsorption equilibrium reached within 35 min and a removal rate ≥ 97%. After four regenerations, the decline in removal rates of T-AlZn for Pb2+ is only 16.73%. The adsorption of T-AlZn for Pb2+ follows the Langmuir isotherms model and pseudo-second-order dynamics model, with the utmost adsorption competence of 215.27 mg g-1. T-AlZn adsorbent shows a bright prospect in the adsorption for Pb2+ and is a considerable candidate in the disposal of industrial sewage.
Article
Chemistry, Multidisciplinary
Kai Zhang, Xiangyi Liu, Jiajun Bi, Amal BaQais, Ben Bin Xu, Mohammed A. Amin, Ying Hou, Xianglong Liu, Handong Li, Hassan Algadi, Juan Xu, Zhanhu Guo
Summary: Bimetallic NiCe/Lay catalysts were prepared and achieved a conversion rate of oleic acid of 100% and a hydrocarbon selectivity of 92.77%.
NEW JOURNAL OF CHEMISTRY
(2023)
