Article
Biochemistry & Molecular Biology
Dorota Wieczorek, Beata Zyszka-Haberecht, Anna Kafka, Jacek Lipok
Summary: This study examined the phosphorus profiles of seeds from plants of different taxa and found significant variations among different plant families. The presence of phosphonates in plant seeds was confirmed for the first time using P-31 NMR spectroscopy, suggesting that phosphorus profiles, including the presence of phosphonates, could be a new chemotaxonomic feature.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Polymer Science
Yuqi Liu, Li Yuan, Guozheng Liang, Aijuan Gu
Summary: In this study, novel phenolic compounds containing citraconimide groups were designed and synthesized, and para-functionalized and ortho-functionalized benzoxazine monomers were synthesized through reactions with furfurylamine and paraformaldehyde. The cured resins showed excellent processability and flame retardancy, with poly(pCI-fa) exhibiting better performance than poly(oCI-fa).
EUROPEAN POLYMER JOURNAL
(2022)
Article
Environmental Sciences
Ai Chen, Lingyang Zhu, Yuji Arai
Summary: With the increasing demand for P fertilizer for world food production, the use of soil organic P fraction via mineralization could become an important P resource in agricultural soils. The inhibitory mechanism of Ca2+ on phytase activity was investigated in this study using degradation kinetic experiments and spectroscopy techniques. The study revealed that Ca2+ had a pH-specific effect on the mineralization of phytic acid.
Article
Ecology
Thomas Heron, Daniel G. Strawn, Mariana Dobre, Barbara J. Cade-Menun, Chinmay Deval, Erin S. Brooks, Julia Piaskowski, Caley Gasch, Alex Crump
Summary: The availability and speciation of phosphorus in forest and meadow soils in the Lake Tahoe Basin are influenced by ecosystem and parent material, with organic phosphorus being a major component of soil phosphorus.
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2021)
Article
Engineering, Environmental
Nolan J. T. Pearce, Chris T. Parsons, Sarah M. Pomfret, Adam G. Yates
Summary: Effective modeling and management of phosphorus (P) losses from landscapes to waterbodies requires understanding of P retention and remobilization along the terrestrial-aquatic continuum. Stream periphyton has the capability to transiently store bioavailable P, but its response to dynamic P concentrations is largely unknown.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Wei Liu, Longlong Ding, Lin Wang, Congwu Zhang, Weiye Yang, Dongli Liu, Zhou Gui, Weizhao Hu
Summary: Based on the molecular polarity perspective, hyperbranched charring foaming agents (HCFA) modified black phosphorus nanosheets (BP@PPC) were used to solve the fire hazards of polypropylene (PP) through in situ polymerization. The addition of BP@PPC significantly decreases the total heat release (THR) and peak heat release (PHRR) of PP, with almost no impact on the mechanical properties of the material.
Article
Environmental Sciences
Ziwei Long, Zehua Ji, Yuansheng Pei
Summary: This study analyzed sediment samples from Baiyangdian Lake and found variations in the forms and content of phosphorus (P) in different regions. Inorganic P was the dominant form, while organic P was mainly in the form of orthophosphate monoesters. Regions affected by human activities had higher P content and a greater risk of P release. P bound to Fe, Al, and Mn oxides and hydroxides, as well as organic P, were derived from industrial and agricultural pollution, respectively. Organic matter played a crucial role in the organic P biogeochemical cycle.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Engineering, Environmental
Dongxu Xing, Xunzhou Li, Yi Wang, Shenggui Deng, Chunji Jin, Yangguo Zhao, Liang Guo
Summary: Understanding the impact of phosphorus sources on microalgae growth is crucial for cultivating microalgae. Both inorganic phosphorus and organic phosphorus can be absorbed and utilized by Chlorella pyrenoidosa. The maximum dry cell weight was achieved when the IP/OP ratio was 1:3, which was higher than other combinations. The increase in OP proportion was beneficial for microalgae growth but disadvantageous for lipid accumulation. The use of 31P NMR spectroscopy provided valuable insights into phosphorus metabolism and transformation in microalgae.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Guoqiang Qin, Shilun Jiang, Haotian Zhang, Shengjian Qin, Hongya Wu, Feipeng Zhang, Guanglei Zhang
Summary: This paper investigated the effect of curing temperature on the properties of PBO aerogel. It was found that higher curing temperature resulted in improved mechanical properties, but excessively high temperature led to a significant decrease in pore volume and specific surface area. The F-type PBO aerogels showed excellent properties and can be used in aerospace applications or other fields.
Article
Engineering, Chemical
Qinlan Luo, Qulan Zhou, Bin Feng, Na Li, Shicheng Liu
Summary: In this study, the potential capabilities of PZ blends containing MEA/MDEA/AMP for CO2 capture were investigated experimentally and computationally. The shuttle effect of PZ for enhanced CO2 absorption was verified. Experimental results showed that PZ blends had high absorption rates and capacities. Qualitative and quantitative C-13 NMR analyses revealed the conversion between absorption products, releasing free PZ to capture CO2 and improve absorption performance. Quantum mechanical calculations and simulations were conducted to evaluate the thermodynamic stability and kinetically favorable key reactions in PZ blends.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Environmental Sciences
Junwei Jin, Yunying Fang, Shuang He, Yu Liu, Chunlong Liu, Fayong Li, Sangar Khan, Kamel Mohamed Eltohamy, Boyi Liu, Xinqiang Liang
Summary: This study investigated the effects of three different fertilizers on soil phosphorus (P) species through sequential chemical extraction (SCE) and 31P NMR techniques, as well as the degree of P saturation (DPS) in paddy and vegetable fields. The results showed that biochar-blended organic fertilizer and organic fertilizer increased the total and available P contents in the soil, but decreased the DPS values. However, chemical fertilizer had a smaller impact on soil P species. Biochar-blended organic fertilizer improved P availability and decreased P loss risk through the alteration of soil P species.
Article
Polymer Science
Wenwu Lei, Dengyu Wang, Ying Li, Kui Li, Qiancheng Liu, Pan Wang, Wei Feng, Qi Liu, Xulin Yang
Summary: A new bi-functional benzoxazine-phthalonitrile foam was successfully prepared with azodicarbonamide as a foaming agent, showing improved foaming efficiency and uniform cell structure. The compressive properties of the foam depend on cell structure rather than density, and it exhibits superior thermal stabilities compared to other benzoxazine foams.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Environmental Sciences
Akira Hafuka, Yoichi Tsubokawa, Ryuichiro Shinohara, Katsuki Kimura
Summary: The study found that phosphorus (P) discharge from human activities leads to eutrophication of lakes. Research showed that the forms of phosphorus in water bodies can transform from inorganic to organic as it flows from rivers to lakes.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Multidisciplinary
Robin Rothfelder, Verena Streitferdt, Ulrich Lennert, Jose Cammarata, Daniel J. Scott, Kirsten Zeitler, Ruth M. Gschwind, Robert Wolf
Summary: Detailed P-31{H-1} NMR spectroscopic investigations provide deeper insight into the mechanisms involved in the photocatalytic arylation of white phosphorus, revealing previously unrecognized side products and the unexpected behavior of the terminal reductant Et3N. The different rate of formation of these products explains the performance discrepancies of two effective catalysts, while the observation of PH3 as a minor intermediate led to the development of a new catalytic procedure for the arylation of white phosphorus. This method yields valuable triarylphosphines or tetraarylphosphonium salts depending on aryl substituents' steric profiles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Vratta Grover, Poornenth Pushpanandan, Mangalampalli Ravikanth
Summary: The oxidative cyclization of open chain thiabilanes resulted in the formation of unique piperazine bridged thianorrole dimers instead of thianorrole monomers as expected. These thianorrole dimers are formed by linking two thianorrole monomeric units through two direct pyrrole C-C bonds involving inverted pyrrole and adjacent pyrrole rings of each thianorrole macrocycle, forming a six-membered piperazine ring that bridges the two thianorrole macrocycles. Spectral studies indicated that these thianorrole dimers are nonaromatic in nature.
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.