JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Yanhui Zhang,Ruoning Zhang,Yao Lu,Yanxiang Gao,Like Mao
Hypothesis High internal phase emulsions (HIPEs) have great potentials in the food industry to control fat consumption. Textural perception of HIPEs during oral processing is strongly influenced by saliva, which has not been systematically investigated. Therefore, we investigated the roles of saliva in the rheological and tribological properties of HIPEs during oral processing. Experiments HIPEs (O/W) stabilized by oleogel and a protein were fabricated. Small (SAOS) and large (LAOS) amplitude oscillatory shearing measurements and tribological tests were performed, in combination with structural characterization of the emulsions. Findings Particle size and CLSM observation indicated that saliva induced coalescence of droplets by weakening the interface and more EC resulted in faster clustering. SAOS tests revealed that emulsions mixed with saliva had weaker structural strength and lower resistance to deformation. Particularly in large deformation , the HIPEs mixed with saliva presented an acceleration in the droplet–droplet structure breakdown, which led to the pronounced strain-thinning behavior and energy dissipation. Tribological curves further revealed that the corporation of saliva contributed to the release of oil to reduce friction coefficient .
研究领域:
食品科学
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生物学
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2020
·
IF 5.774
Ning Zhang,Yunfei Qi,Suhuan Tian,Yue Wang,Ping Cui,Wei Jiang
Bottom-up and up-down strategy were adopted simultaneously to fabricate the interconnected porous polystyrene monolith based on the high internal phase emulsions (HIPEs) technique. Interface-initiated polymerization strategy of the HIPEs combined with porogen toluene molecule offered an attractive route to fabricate the ultra-light polystyrene foam. High porosity and extra-light density endowed the polystyrene foam with outstanding oil adsorption performance towards a wide range of oil/organic solvents and diesel adsorption capacity exceeded 75.1 g/g. For recyclability, the oil adsorbed in the monolithic polystyrene foam was recovered just by means of centrifugation and the deoiling rate was over 90%. Even after ten cycles of adsorption-centrifugation, the material showed little decline in the adsorption capacity. Oleophilicity, hydrophobicity, permeable pore structure, ultra-low density, excellent oil adsorption performance and recyclability, all these features help the polystyrene foam find great application in the field of oil–water separation.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
高影响因子
SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS
·
2019
·Vol. 26
·期 1
·261-269
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IF 0.705
Xiazhi Zhou,Wei Zhou,Dianchun Ju,Yinxian Peng,Lei Zhou,Sheng Tang,Jing Wang
In this work, hierarchical porous resins (PRs) are fabricated and applied as novel adsorbent for removal of oily substance. The oil/water (o/w) high internal phase emulsions (HIPEs), stabilized by phenolic resin precursor and tween 80, were used as the template for simultaneous polymerization of aqueous phase, methenamine, sodium persulfate and liquid paraffin. Subsequently, dopamine hydrochloride, 1-dodecanethiol and Fe 3 O 4 particles are grafted onto the interface of PRs via adhesion of dopamine and Markel addition reaction between quinone groups on dopamine and sulfhydryl groups on 1-dodecanethiol. The as-prepared composites possessed hydrophobicity and magnetic property (HPRs). The physical and chemical properties, morphology and adsorption properties of HPRs are characterized by XRD, FT-IR, TGA, SEM, N 2 adsorption-desorption isotherms. The as-synthesized HPRs composites had a typical hierarchical porous structure, and the resulted macropores with a well-defined open-cell and interconnecting pore throat structure could be controlled via the composition of the aqueous phase of emulsion. The hierarchical porous structure of HPRs contained macropores ranging from 0.3 μm to 4 μm and mesopores of 11.26 nm. HPRs have rough and hydrophobic surface (water contact angle of 130 ∘ ) with specific surface area of 15.06 m 2 /g and pore volume of 0.0349 cm 3 /g. The oil adsorption rate and the oil retention rate for toluene are 11.765 g/g and 86.43%, respectively. The oil adsorption rate in the first minute can reach more than 80% of the highest oil adsorption rate. The oil adsorption rate of HPRs after three recycling experiments can still reach 87.32%of the first-time oil adsorption rate.
研究领域:
材料科学
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化学工程
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环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Danzhao Guo,Yuying Mao,Xuan Zhang,Bin Bai,Xingchen Yan,Shucheng Liu
In this work, two new kinds of boronic acid functioned sorbents (HCLPH-N 3 @PCAPBA and HCLPH@N 3 -PBA) based on emulsion reactors coupled with click chemistry and boronate affinity were developed for the separation of naringin (NRG). The new clickable boronate ligands 3-(prop-2-ynyloxycarbonylamino) phenylboronic acid (PCAPBA) and azide phenylboronic acid (N 3 -PBA) were utilized as functional monomers for the specific separation and purification of NRG molecules, respectively. The pore structure of macroporous polymers were adjusted via the hypercrosslinking reactions, which can effectively increase their specific surface area and provide abundant recognition sites. The resulting HCLPH-N 3 @PCAPBA and HCLPH@N 3 -PBA exhibited fast equilibrium adsorption at 120 min, and their maximum absorption amounts were 29.85 μmol g −1 and 41.27 μmol g −1 at 303 K, respectively. The HCLPH-N 3 @PCAPBA and HCLPH@N 3 -PBA demonstrated remarkable stability in six cycles of adsorption–desorption experiments (88.48% and 92.02%, respectively). Furthermore, the HCLPH@N 3 -PBA achieved an efficient extraction 93.4% for the commercially available NRG. Our findings provided an idea for constructing hierarchically porous high-surface-area polymers with fast penetrability and various abundant binding sites have great potential for separation and purification of industrial samples.
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高影响因子
JOURNAL OF FOOD ENGINEERING
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2026
·
IF 5.8
Fuge Niu,Yuxian Long,Chunxiao Wang,Huabin Liao,Feina Gu,Zhijuan Feng,Jianzhong Zhou,Mengdi Zhao,Weichun Pan
Glycosylation enhanced EWP emulsifying capacity for stable HIPEs. • HIPEs formed jammed droplet networks with viscoelastic behavior. • Interfacial adsorption governed droplet size and microstructure. • Dense interfacial layers improved β-carotene stability (>90%). • Optimal conjugate level (1.5%) maximized bioavailability (+146%). High internal phase emulsions (HIPEs) are promising carriers for lipophilic bioactives; however, their structural stability and digestive performance are highly dependent on interfacial design. In this study, egg white protein (EWP)–xylan oligosaccharide (XOS) maillard conjugates were used to fabricate food-grade HIPEs, and their effects on interfacial adsorption, microstructure, rheological behavior, and delivery functionality were systematically investigated. Glycosylation significantly improved the emulsifying performance of EWP, enabling the formation of stable HIPEs with a maximum oil phase fraction ( ϕ ) of 0.87 at 2.0% conjugate concentration, while a minimum concentration of 0.4% was sufficient at ϕ = 0.80. Increasing conjugate concentration enhanced interfacial adsorption, reduced droplet size, and promoted the formation of a densely packed, jammed droplet network, resulting in concentration-dependent viscoelastic properties. Furthermore, HIPEs effectively improved the thermal and storage stability of β-carotene, with retention exceeding 90% after 30 days, which was attributed to the formation of a dense interfacial barrier that limited mass transfer. In vitro digestion revealed that lipid hydrolysis and β-carotene bioaccessibility were maximized at 1.5% conjugate concentration, reflecting a balance between structural stability and enzymatic accessibility. Overall, this study establishes a structure–function relationship in EWP–XOS-stabilized HIPEs and provides mechanistic insights for designing protein–polysaccharide-based delivery systems for lipophilic bioactive. Download: Download high-res image (339KB) Download: Download full-size image
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高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2020
·
IF 3.333
Yong Dong,Liqin Cao,Yongxia Yang,Xiujuan Wu,Jide Wang
Removing dyes and antibiotics from wastewater remains the current requirement for a global health problem. The ionic macroporous adsorbent is an efficient solution to this problem. Herein, a novel sulfonated TiO 2 /poly(acrylamide- co -2-acrylamido-2-methylpropanesulfonic acid) [TiO 2 /P(AM- co -AMPS)] macroporous composite monolith was first prepared by copolymerization of AM and AMPS in m TiO 2 -costabilized CO 2 -in-water Pickering high internal phase emulsions (HIPEs). The composite monoliths were characterized using XRD , SEM, confocal laser scanning microscopy , EDS mapping, FTIR, TGA , and mercury injection methods. The mechanical properties of the TiO 2 /P(AM- co -AMPS) HIPE were also evaluated. The void diameter could be adjusted by changing the density of carbon dioxide and the amount of m TiO 2 . The equilibrium swelling ratios of TiO 2 /P(AM- co -AMPS) with different contents of crosslinking agent of 2, 5, and 10 wt% (AM+AMPS) were 93, 37, and 19 g/g, respectively. TiO 2 /P(AM- co -AMPS) was used to remove methylene blue (MB) and tetracycline (TC) for evaluating the adsorptive properties of the composite monoliths. Results indicated that the main adsorption driving force was the electrostatic attraction between −SO 3 − and MB/TC. Adsorption experiments were conducted using a batch technique. The adsorption capacities of TiO 2 /P(AM- co -AMPS) for MB and TC were 1660 and 1128 mg/g in a wide pH range of 3–10. The equilibrium saturation point could be reached after 90 min for MB and 360 min for TC. Thereafter, the removal of MB and TC by gravity-driven separation was presented. The breakthrough curve and reuse evaluation for the removal of MB/TC were also studied in detail.
研究领域:
环境科学
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材料科学
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化学工程
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高影响因子
RSC Advances
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2016
·Vol. 6
·期 96
·93894-93904
·
IF 3.289
Jianming Pan,Jialu Luo,Jun Cao,Jinxing Liu,Wei Huang,Wenli Zhang,Lili Yang
Hydrophilic urea-formaldehyde macroporous foams (UFMF) were simply synthesized by templating oil-in-water Pickering high internal phase emulsions (HIPEs) solely stabilized by lignin particles. Morphology and structure of the UFMF can be easily tailored by varying the experimental compositions of Pickering HIPEs and polymerization time. Due to their porous matrix, hydrophilic surface, and high content of binding groups (such as hydroxyl groups and carbonyl groups), as-prepared UFMF was adopted for the removal of three phenolic compounds (PCs) from aqueous solution. The influences of pH, solution temperature, contact time, and initial concentration of 2,4,5-trichlorophenol (2,4,5-TCP), 2,4,6-trichlorophenol (2,4,6-TCP) and 4-nitrophenol (4-NP) on adsorption capacity and competitive adsorption of multi PCs were investigated via the batch mode experiments. The adsorption kinetics and adsorption isotherms fit well by a pseudo-second-order model and Langmuir model, respectively. The max adsorption capacity of 2,4,5-TCP, 2,4,6-TCP and 4-NP at 25 °C are 116.3 mg g−1, 78.74 mg g−1, 29.41 mg g−1, respectively, and their adsorption rate follows the order 2,4,5-TCP > 2,4,6-TCP > 4-NP. Moreover, the group type and position effects both influence the adsorption, and follow the order: 2,4,5-position substitution of chloride > 2,4,6-position substitution of chloride > 4-position substitution of nitro-group, showing that the substitution with the more groups has the higher adsorption affinity.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2018
·Vol. 135
·期 23
·46346
·
IF 1.901
Liwen Wang,Yongjia Liu,Lei Bao,Dongdong Hu,Yuan Zong,Gangsheng Tong,Ling Zhao,Tao Liu
Poly(vinyl acetate- alt -dibutyl maleate)- block -poly(ethylene glycol) (PVDBM- b -PEG) copolymers were synthesized via reversible addition–fragmentation chain transfer radical polymerization and used as emulsifiers to form stable CO 2 -in-water high internal phase emulsions (C/W HIPEs). Then, highly interconnected cellular polyacrylamide (PAM) and poly(acrylamide- co - N -hydroxymethyl acrylamide) [P(AM- co -HMAM)] poly-HIPEs with enhanced mechanical strength were prepared based on the stable C/W HIPEs. The porous structures of the PAM poly-HIPEs, as well as morphology and compressive modulus, could be influenced by the surfactant concentration and the length of the CO 2 -philic tails of the surfactants. PAM poly-HIPEs with the smallest average pore diameter (11.12 ± 0.62 μm) and the highest compressive modulus (22.65 ± 0.10 MPa) could be obtained by using the short CO 2 -philic chains of the PVDBM- b -PEG surfactant at a high concentration (1.0 wt %). Moreover, with the copolymerization of N -hydroxymethyl acrylamide (HMAM) comonomers with acrylamide, the compressive modulus of the obtained P(AM- co -HMAM) poly-HIPEs was three times higher than that of PAM poly-HIPEs. Both PAM and P(AM- co -HMAM) poly-HIPEs were employed as scaffolds to guide H9c2 cardiac muscle cellular growth. Fluorescence images showed that a smaller average pore size and a narrower pore-size distribution were helpful for cell growth and proliferation on these materials. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46346.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2020
·Vol. 31
·期 12
·2967-2979
·
IF 2.578
Chao Ma,Jide Wang,Liqin Cao
The current study reports the utilization of MIL-100(Fe) as Pickering emulsifiers to stabilize CO 2 -in-water high internal phase emulsions, thereby synthesizing interconnected macroporous hybrid monoliths with adjustable pore sizes. During such a green synthesis procedure, the influences of Fe-MOF type and content, carbon dioxide density, and the amount of crosslinker have been explored respectively. The as-synthesized MOF-containing poly(HIPE)s were characterized by FT-IR, XRD, SEM, CLSM, and TGA. The morphology of the monoliths was mainly observed by EDS-mapping and SEM, which showed that Fe-MOFs were uniformly distributed into the monolithic matrix and the void sizes and interconnected pore sizes were 20 to 150 μm and 5 to 50 μm, respectively. Furthermore, the MIL-100(Fe)-containing monoliths exhibited an excellent elasticity and can quickly return to their original state when reaching up to 90% compressive strain without failing. To evaluate the adsorptive properties of the composite monoliths, the immobilization of β-amylase on the obtained monoliths was studied. The results of immobilized enzymes showed that the highest protein adsorption rate can reach 55% and the immobilization efficiency can reach 89%. Since our synthetic route is clean and controllable, biocompatible monoliths with good elasticity and toughness were prepared, which presents a viable strategy to produce hybrid monoliths for bio-medical applications.
研究领域:
材料科学
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生物医学工程
·
酶工程
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DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2015
·
IF 1.587
Hong-Yu Luo,Min Zhang,Nai-Chao Si,Min-Jia Meng,Li Yan,Wen-Jing Zhu,Chun-Xiang Li
In this study, novel molecularly imprinted open porous membranes (MIOPMs) were prepared using the Pickering HIPEs template method and molecular imprinting technology for selective adsorption and separation of methyl 4-hydroxybenzoate (M4HB). The template M4HB, functional monomers, crosslinker and plastifier 2-ethylhexyl acrylate (2-EHA) were contained in the oil phase. Hydrophobic silica nanoparticles (HNP-SiO 2 ) were employed as a stabilizer to establish stable W/O Pickering HIPEs with nonionic surfactant sorbitantrioleate (Span 85). The results of SEM and FTIR indicated that the optimal MIOPMs were prepared successfully and possessed open and interconnecting pores. Then, the MIOPMs were used as sorbents for M4HB. The correlation coefficient ( R 2 ) values for the Langmuir–Freundlich isotherm model and pseudo-second-order kinetic model fitting to the adsorption equilibrium and kinetic data respectively were all higher than 0.95. The maximum adsorption capacity and the time of rapid adsorption for MIOPM 4 were 4.146 mg g −1 and 100 min, respectively. In addition, the permeability separation factor of MIOPMs for M4HB compared to a structurally related analog methyl 2-hydroxybenzoate (M2HB) could reach 3.122.
研究领域:
材料科学
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分离技术
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化学工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Jianming Pan,Yijie Yin,Yue Ma,Fengxian Qiu,Yongsheng Yan,Xiangheng Niu,Tao Zhang,Xue Bai
To recognize and remove targeted organic and inorganic pollutants simultaneously, a simple and outstanding approach was provided to fabricate hierarchical porous molecule/ion imprinted polymers (M-IIPs) with double specific binding sites, Firstly, λ-cyhalothrin (LC) molecules imprinted polymer foam initiators (MIPFIs) with the average void diameter of 8.0 μm were prepared via a W/O Pickering high internal phase emulsions (HIPEs) template stabilized by vinyl-silica particles (V-SPs). Secondly, based on a pore-filled strategy, adjustable amounts of copper ions (Cu(II)) imprinted polymers (IIPs) were incorporated into the macroporous surface of MIPFIs via atom transfer free radical polymerization (ATRP). Owing to the well-defined hierarchical porous structure, M-IIPs possessed enhanced binding kinetics, and the maximum monolayer adsorption capacities of as-prepared M-IIPs were 193.1 μmol g −1 and 169.9 μmol g −1 towards LC and Cu(II), respectively. The imprinting factor ε was 1.942 for LC, while their relative selectivity coefficients α r for Cu(II)/Zn(II) and Cu(II)/Ni(II) were 6.31 and 4.24 times higher than those of non-imprinted polymers (N-NIPs), illustrating that M-IIPs showed excellent molecular recognition in testing solutions. In the binary solution of LC and Cu(II), an enhanced adsorption capacities towards LC and Cu(II) were observed, indicating the existence of promotion in selective adsorption ability in the case of coexistence of LC and Cu(II). Besides, test of reusability suggested that the M-IIPs could be repeatedly used without any significant loss in binding capacity. Overall, this work not only provided new insights into the fabrication of porous imprinted composites with huge specific surface area and binary function, but also highlighted their application for selective and simultaneous removal of LC and Cu(II).
研究领域:
环境科学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2014
·
IF 4.058
Jianming Pan,Qin Qu,Jun Cao,Dong Yan,Jinxin Liu,Xiaohui Dai,Yongsheng Yan
The water-in-oil Pickering high internal phase emulsions (HIPEs) were firstly stabilized by hydrophobic silica particles with adding small amounts of nonionic surfactant Hypermer 2296. Then molecularly imprinted polymer foams (MIPFs) derived from Pickering HIPEs were evaluated as adsorbents for the selective adsorption of λ-cyhalothrin. The results of characterization indicated that MIPFs possessed open-cell structure, interconnecting pores, thermal stability, moderate hydrophobicity and mechanical robust. The adsorption capacity for λ-cyhalothrin were closely related with the morphologies of the MIPFs, such as void diameter and interconnectivity, which could be easily tailored by varying the parameters of Pickering HIPEs. The batch mode experiments proved that as-prepared MIPFs exhibited the excellent adsorption capacity for λ-cyhalothrin (46.10 μmol g −1 at 25 °C) and enhanced recognition towards λ-cyhalothrin over fenvalerate and diethyl phthalate.
研究领域:
材料科学
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聚合物化学
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环境化学
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分析化学
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吸附技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）