JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
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2018
·Vol. 18
·期 12
·8419-8425
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IF 1.354
Fei Guiqiang,Zhang Yu,Wang Xia,Li Xiaorui,Wang Haihua
Cationic poly(urethane-acrylate) emulsifier-free microemulsions are prepared by seeded emulsion polymerization (SPUA) or in-situ emulsion polymerization (IPUA) with (a) or without (b) crosslinking agent hydroxyethyl acrylate (HEA). Furthermore, no surfactant is introduced into
the reaction system. The effect of continuous phase and HEA on the rheological behavior and properties of microemulsions are studied. The results show that IPUA using vinylmonomers as the continuous phase and with HEA (IPUAMB-b) has the highest ζ value, lowest coagulation ratio, smallest
particle size of 48 nm and apparent core–shell structures. Rheological research has concluded that the zero-shear viscosity of IPUAB-b and IPUAM-b emulsion is 6.03×102 and 7.89 Pa·s, respectively, and presents pseudoplastic behavior. However, IPUAMB-b and SPUA-b
display Newtonian behavior with η0 of 0.136 Pa·s and 0.0823 Pa·s, respectively. PUA emulsions display similar rheological behavior when NMP is replaced by the mixture of MMA and BA.
研究领域:
材料科学
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高分子化学
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DOI
PubMed
高影响因子
Biology-Basel
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2021
·Vol. 10
·期 8
·815
·
IF 5.079
Guo Liu,Tao Hou,Shenglan Guo,Hongyu Lin,Meng Chen,Jianyin Miao,Xiaojuan Liu,Yahui Huang,Yong Cao,Yaqi Lan,Mingyue Song
Simple SummaryFor the first time, this study investigated the extraction of bioactive substances with different polarities from immature honey pomelo fruit (IPF), a by-product of pomelo planting processing that causes resource waste and environmental pollution, using novel continuous phase transition extraction technology (CPTE). The results showed that CPTE was suitable for extracting essential oil, naringin, and pectin in sequence according to their polarities. The naringin extraction process was optimized by the response surface methodology, resulting in an extract ratio up to 99.47%. Moreover, the pectin extracted from IPF by CPTE showed better quality compared to commercial counterparts, as evidenced by lower protein and ash contents and higher white value. Together, these results suggested that CPTE could be a promising technology to improve the application value of IPF. For instance, the extracted bioactive components can be utilized as nutraceutical food ingredients. The scientific insights from this study will contribute to the development of functional food ingredients and comprehensive utilization of farming by-products.AbstractThe immature honey pomelo fruit (IPF) is a huge agro-industrial by-product generated during pomelo planting. Although IPF is rich in nutrients, more than 95% of IPF is discarded annually, which causes resource waste and a serious environmental problem. Here, we report a novel continuous phase transition extraction technology (CPTE) to improve the comprehensive utilization of IPF by sequentially generating high value products and solve pollution problems related to their disposal. First, essential oil was successively extracted by CPTE at a yield of 1.12 ± 0.36%, in which 43 species were identified. Second, naringin extraction parameters were optimized using the response surface methodology (RSM), resulting in a maximum extraction rate of 99.47 ± 0.15%. Finally, pectin was extracted at a yield of 20.23 ± 0.66%, which is similar to the contents of commercial pectin. In conclusion, this study suggested that IPF was an excellent potential substrate for the production of value-added components by CPTE.Keywords:immature pomelo fruit;sequential extraction;value-added compounds;continuous phase transition extraction under low temperature
研究领域:
食品科学
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环境科学
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农业资源利用
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DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2022
·Vol. 11
·期 4
·905-913
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IF 7.571
Yan Qiu,Liang Wu,Sijun Liu,Wei Yu
High performance hydrogels have essential applications in many fields such as tissue engineering and soft robot. Herein, we develop an impact resistant hydrogel composed of bicontinuous structures of polymer-hard phase and polymer-soft phase. This unique bicontinuous phase structure is formed by modulating various hydrogen bonding interactions. During loading, the polymer-hard phase is broken accompanied by the dissociation of hydrogen bonds to dissipate energy, while the polymer-soft phase distributes the load to avoid stress concentration, thus enabling the bicontinuous hydrogel to achieve excellent strength and toughness simultaneously. Furthermore, the fracture of hierarchical energy dissipation structures efficiently reduces impact strength and increases buffer time. Owing to the synergy of the bicontinuous phase structure and hierarchical energy dissipation, the resulting bicontinuous hydrogel remains intact even if it undergoes impact at a strain rate of ∼13 000 s−1. Based on these findings, it is expected that the bicontinuous hydrogel has a potential application in the field of articular cartilage repair.
研究领域:
材料科学
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生物医学工程
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组织工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2022
·
IF 4.889
Chenghao Gao,Sida Ling,Zhuo Chen,Yundong Wang,Jianhong Xu
Droplet microfluidic technology refers to the technique of preparing and controlling microscale monodisperse droplets by shear force and interfacial tension of two immiscible phases accurately, which has a wide range of applications in biomedicine, chemical reaction enhancement, nanoparticle preparation, and other fields due to its efficient mass and heat transfer, easy manipulation, rapid response, and high throughput. In the application of droplet microfluidic technology, coalescence often occurs due to the structural complexity of microchannels, which limits the practical application performance. The mechanism of droplet coalescence has been widely studied in conventional reactors, among which the liquid film drainage theory is the most widely accepted. To achieve accurate control of the droplet coalescence process, there have been many studies on droplet coalescence in microchannels. A variety of microchannel structures have been proposed and the mechanism and influencing factors of double droplets coalescence have been explored. However, most of the existing studies on coalescence are based on cross structures, mainly studying the coalescence of double droplets in confined systems. There is still a lack of research on the coalescence process of droplet swarms, which is more widespread in practical applications. Therefore, this work used the rectangular expansion structure to realize the droplet coalescence and explored the effects of two-phase flow rate, continuous phase viscosity, surfactant concentration, and the size of expanding channel on the droplet coalescence behavior. The coalescence types, probabilities, and size distributions of microdroplet swarms under different factors were summarized. The time distribution of liquid film drainage in the droplet coalescence process and the influence of various factors on it were further analyzed based on the liquid film drainage theory.
研究领域:
微流控技术
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生物医学工程
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2021
·
IF 5.645
Guo Liu,Mingjuan Liao,Baoyan Guo,Qixin Kan,Shuangde Zhou,Konglong Feng,Wanhuang Lin,Yahui Huang,Jianyin Miao,Yong Cao
Castor ( Ricinus communis L.) meal, a by-product of castor oil production, is a high-quality protein source. Unfortunately, the toxic substance limits its application. Herein, a novel continuous phase transition extraction (CPTE) technology at pilot scale was explored for castor meal detoxification. The detoxification conditions were optimized using response surface methodology (RSM) as: treatment time of 3 h, extraction pressure of 0.16 MPa and temperature of 84.8°C. And the removal rate of allergens, hemagglutinin, and ricin reached 79.2 %, 99.8 % and 99.0 %, respectively. The protein content of castor meal increased from 38.4% to 39.0%. The nontoxicity nature of the treated caster meal was verified via an acute toxicity tests where the mean lethal dose was >5000 mg/kg body weight. Overall, CPTE offers a novel and efficient tool for castor meal detoxification, with the superiority of non-nutrient loss, it improved the application value of castor meal and reduced the risk of environmental pollution.
研究领域:
食品科学
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植物学
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Yang Liu,Yan Zhang,Xiaofang Lv,Yisong Yu,Shuang Ren,Qianli Ma,Chuanshuo Wang,Shidong Zhou,Bingcai Sun
As oil and gas extraction increasingly ventures into deep-sea environments, the issues surrounding the flow safety of hydrate and wax deposits have become more critical. There is an urgent need to develop environmentally friendly and adaptable hydrate anti-agglomerants, and to expand the database and knowledge base for risk management strategies to ensure optimal production safety. This study formulated combined anti-agglomerants with varying HLB values using Span 80 and Tween 80 in different ratios. Rheological experiments were conducted to investigate their synergistic anti-agglomeration performance in water-in-oil emulsions and their adaptability in environments with wax, varying water contents, and different continuous phase compositions. The results indicate that, in comparison to a single anti-agglomerant, the combined anti-agglomerants not only increases the critical time for hydrate formation but also reduces peak viscosity and stable viscosity by 23–90 % and 25–85 %, respectively. Additionally, an index for assessing the flow risk of hydrate slurries under specific conditions was proposed, which demonstrates that the combined anti-agglomerant with an HLB value of 8.6 exhibits exceptional performance across various conditions. This finding is significant for refining risk management strategies for hydrates in deep-sea oil and gas transportation processes.
研究领域:
石油工程
·
化学工程
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2025
·
IF 6.6
Mengjing Zhou,Bin Li,Aolin Wu,Jiawei Li,Jinming Tang,Ying Wang,Zhigang Hu
In this study, we used beeswax and rice bran wax as oleogelators. We used gelatin as a hydrogelator for the hydrogels. Then, we checked the bigels' thermal, mechanical, rheological, and freeze-thaw properties with different mixes of hydrogel and oleogel. As the tests went on, it was found that when the ratio of hydrogel to oleogel was 6:4, the BG5 bigel had a water-oil bicontinuous phase. The Fourier transform infrared spectroscopy (FTIR) analysis indicated that the hydrogel and oleogel parts each had their own unique peaks. This pattern is similar to the lipid profile of butter. The storage modulus (G′) and loss modulus (G″) of the bigel changed in a way that wasn't linear as the hydrogel content went up. This indicated that the ratio of hydrogel to oleogel had a big effect on the bigel's elastic and viscous properties. Tests of freeze-thaw stability indicated that the oil holding capacity (OHC) went up significantly as the hydrogel content went up. Following three freeze-thaw cycles, the OHC values for BG2 to BG6 were 71.62 ± 1.03 %, 75.1 ± 0.36 %, 76.0 ± 0.02 %, 80.53 ± 1.85 %, and 99.60 ± 0.39 %. This study proposes a bigel preparation method with excellent structural and freeze–thaw stability, providing a new approach and technical support for the development of butter alternatives in low-fat food systems.
研究领域:
食品科学
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材料科学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2022
·
IF 4.326
Ze-Teng Wang,Si-Xing Chen,Yi Ouyang,Xue-Qin Zhang,Bing-De Zheng,Na Zhang,Jing Ye,Mei-Tian Xiao,Yu-Cheng Yang
Process intensification equipment is playing an increasingly role in the emulsion process. A novel rotating solid foam stirrer tank (RSFST) is developed in this work to try to intensify the liquid–liquid emulsification process. The effects of operating parameters and physical parameters, such as emulsification time, rotational speed, packing size, dispersed phase volume fraction, and continuous-phase viscosity, on the droplet size distribution and Sauter mean diameter d32 of oil-in-water emulsions produced in RSFST were investigated using a kerosene–water system. To benchmark the emulsion performance of the RSFST, a Rushton stirrer is used a reference stirrer and the generated droplet size and average energy dissipation rate as the evaluation metrics. Based on the experimental data of emulsification under different operating conditions and physical parameters, models are applied to describe the bimodal distribution of oil-in-water emulsion droplet sizes, and correlation is proposed to predict the Sauter mean diameter d32 of RSFST. This work provides fundamental data for practical applications of RSFST used in emulsion process intensification.
研究领域:
化学工程
·
过程强化
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DOI
高影响因子
MACROMOLECULES
·
2022
·
IF 6.057
Xiaofeng Li,Kuan Yang,Zimo Wang,Yaohan Chen,Yonggang Li,Jing Guo,Jifu Zheng,Shenghai Li,Suobo Zhang
Main-chain non-ether anion-exchange membranes (AEMs) have become a research hotspot in recent years because of their ease of preparation and excellent alkaline stability. However, owing to the limitations of the types of monomers and polymerization mechanisms, preparing main-chain non-ether AEMs with controllable morphology remains challenging. Herein, seven poly(fluorene alkylene) membranes, including random and block-structured membranes with different quaternary ammonium (QA) group distributions on the side chains, with the same ion-exchange capacity (IEC) were designed via superacid-catalyzed polymerization. The properties of the as-synthesized membranes were characterized, and the water-transport mechanism has been discussed in relation to the morphology of the membranes. The formed bicontinuous phase structure based on block biphenyl units possessed multidirectional ion channels and distinct ion clusters favorable to water molecule movement. The conductivity of the optimized membrane with a block biphenyl structure reached 208 mS cm–1 at 80 °C, and the peak power density of an H2/O2 fuel cell based on the as-prepared membrane was 0.92 W cm–2. The reported approach is effective in balancing the content of free and bound water within the membrane, generating maximum hydroxide mobility and water transport suitable for high-performance AEM fuel cells. This study highlights the significance of regulating the block structure and adjusting the segment distribution in AEMs to tune their morphologies and provides an innovative design approach for constructing high-performance AEMs.
研究领域:
材料科学
·
能源化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Chong Liu,Junxiao Wang,Weijie Kou,Zhihao Yang,Pengfei Zhai,Yong Liu,Wenjia Wu,Jingtao Wang
All-solid-state lithium batteries, featuring high security and volume energy density, hold great potential as next-generation energy storage device. However, their development needs the fabrication of ionic conductive and structural stable solid electrolyte. Herein, Li 0.33 La 0.557 TiO 3 (LLTO) framework with interlocked porous structure is synthesized by sintering the gel permeated nylon. Then, poly(ethylene oxide) (PEO) is incorporated in the pores to produce PEO-LLTO framework solid electrolyte (PLLF electrolyte) with vertically bicontinuous phase. We demonstrate that LLTO framework fast transports Li + through the intrinsic vacancy; meanwhile the confined PEO with low crystallization displays fast Li + transfer ability, thus synergistically realizing efficient Li + conduction. This novel PLLF electrolyte exhibits a remarkable ionic conductivity of 2.04 × 10 −4 S cm −1 , which is ~72 times higher than that of traditional PEO-based electrolytes and superior to most reported solid electrolytes. Moreover, the interconnected networks endow PLLF electrolyte with excellent structural stability. Thus, the LiFePO 4 (LFP)/Li cell exhibits extraordinary cycling stability: the discharge capacity of 154.7 mAh g −1 at 1 C after 150 cycles with capacity decay of only 0.03% per cycle. Briefly, such a vertically bicontinuous phase structure maximizes the cooperation between the conduction function of ceramic framework and the stability of polymer, offering a promising approach for all-solid-state batteries.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Shuhui Wang,Yujie Yang,Qun Wang,Zhiqin Wu,Xiaojuan Liu,Shuxi Chen,Aimei Zhou
FCP-2-1, a water-soluble polysaccharide rich in galacturonic acid was isolated by continuous phase-transition extraction and purified with DEAE-52 cellulose and Sephadex G-100 column chromatography from finger citron with essential oil and flavonoids removed. The structural characterization and immunomodulatory activity of FCP-2-1 were further investigated in this work. FCP-2-1 with a M w and M n of 1.503 × 10 4 g/mol and 1.125 × 10 4 g/mol, respectively, was predominantly composed of galacturonic acid, galactose, and arabinose in a molar ratio of 0.685: 0.032: 0.283. The main linkage types of FCP-2-1 were proved to be →5)-α-L-Ara f -(1→ and →4)-α-D-Gal p A-(1→ based on methylation and NMR analysis. Moreover, FCP-2-1 was demonstrated to have significant immunomodulatory effects on macrophages in vitro by improving the cell viability, and enhancing phagocytic activity and secretion of NO and cytokines (IL-1β, IL-6, IL-10 and TNF-α), indicating that FCP-2-1 could be used as a natural agent in immunoregulation functional foods.
研究领域:
生物化学
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免疫学
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药理学
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产品关联
DOI
PubMed
高影响因子
Journal of Agriculture and Food Research
·
2025
·
IF 6.2
Peihang Chen,Xiaoying Zhang,Qiubian Yang,Liang Li,Yong Cao,Ruimin Zhong,Jianyin Miao
Plant seed oils are rich in unsaturated fatty acids and lipid-soluble active ingredients, which have become a hot spot of research in recent years. In this study, a novel low-temperature continuous phase transition extraction device was utilized to extract passion fruit seed oil and its lipid composition, quality properties and hypolipidemic activity were investigated. The extraction rate of passion fruit seed oil by low-temperature continuous phase transition extraction was 20.37%, which was about twice as much as that of solvent extraction (10.80%). The contents of unsaturated fatty acids, vitamin E and β-carotene in passion fruit seed oil extracted by low-temperature continuous phase transition were 84.00%, 21.03 μg/g and 6.28 μg/g, respectively, which were significantly better than those of solvent extraction. The acid value, peroxide value and saponification value of the resulting passion fruit seed oil were 0.275 mg/g, 0.034 g/100g and 185.175 mg/g, respectively. Passion fruit seed oil exhibited good hypolipidemic activity, and the IC 50 of its inhibitory effect on pancreatic lipase and cholesterol esterase were 97.19 μg/mL and 48.08 μg/mL, respectively. Further 3T3-L1 cell experiments concluded that passion fruit seed oil not only reduces lipid production in cells, but also reduces triglyceride, total cholesterol, and low-density lipoprotein cholesterol content in cells, while elevating high-density lipoprotein cholesterol content. This study provides a theoretical basis for the development and utilization of passion fruit seed oil as a functional lipid.
研究领域:
植物化学
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功能食品研究
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生物活性物质分析
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）