Soft Materials最新文献_第3页

Amphiphilicity evolution in self-assembled carbon-based nanostructures for stabilizing different types of Pickering emulsions 稳定不同类型皮克林乳剂的自组装碳基纳米结构的两亲性演化

IF 1.2 4区材料科学

Soft Materials Pub Date : 2023-11-20 DOI: 10.1080/1539445x.2023.2283881

Baichen Wang, Xiaolin Liao, Yu Gao, Wei Li

引用次数: 0

The complex formed between Cocamidopropyl betaine (CAPB) – sulfonated polystyrene (PSS) via electrostatic and hydrophobic interactions 椰油酰胺丙基甜菜碱(CAPB) -磺化聚苯乙烯(PSS)通过静电和疏水相互作用形成配合物

4区材料科学

Soft Materials Pub Date : 2023-11-13 DOI: 10.1080/1539445x.2023.2277726

Mohamed El Amine Zennaki, Lahcene Tennouga, Brahim Bouras, Soraya Balkaid

{"title":"The complex formed between Cocamidopropyl betaine (CAPB) – sulfonated polystyrene (PSS) via electrostatic and hydrophobic interactions","authors":"Mohamed El Amine Zennaki, Lahcene Tennouga, Brahim Bouras, Soraya Balkaid","doi":"10.1080/1539445x.2023.2277726","DOIUrl":"https://doi.org/10.1080/1539445x.2023.2277726","url":null,"abstract":"ABSTRACTThis work produced a polyelectrolyte, sulfonated polystyrene (PSS) from polystyrene waste. The resulting PSS was characterized by FTIR spectrometry, which shows the bands of the sulfur trioxide group. Thermogravimetric analysis (TGA) confirms the material’s high stability compared to the starting material. The interactions between oppositely charged polyelectrolyte (PSS) and the surfactant cocamidopropyl betaine (CAPB) in an aqueous solution of three different pH values were also studied at 25°C, using conductimetry and viscometry techniques. The CMC of the surfactant is above the critical aggregation concentration (CAC) and well below the C2 (saturation concentration). PSS interacts strongly with the zwitterionic surfactant CAPB. At pH 2.5, the polymer is a strong polyanion, and binding is dominated by electrostatic charge neutralization with the cationic surfactant at this pH. At pH 5.2 and 9, the electrostatic attraction between CAPB and PSS weakens, and the hydrophobic interaction strengthens. The effect of salt concentration on the interaction between CAPB and PSS depends on the competition between increasing interaction and filtering interaction. The ionic strength is essential to these interactions after salt and acid injection. CAC and C2 are affected by the charge of the electrolyte and the medium due to the synergistic effects of alkali on the surfactant compared to the polymer system without alkali-surfactant and probably also due to the increase in the formed bond between the polyelectrolyte and the surfactant in the presence of salt.KEYWORDS: Sulfonated polystyreneCocamidopropyl betainecritical micellar concentrationhydrophobic interactionshydrophobic aggregates Disclosure StatementNo potential conflict of interest was reported by the author(s).Author ContributionsAll authors contributed equally to the paper.Supplementary DataSupplemental data for this article can be accessed online at https://doi.org/10.1080/1539445X.2023.2277726.","PeriodicalId":22140,"journal":{"name":"Soft Materials","volume":"72 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136347736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elastic instability and inflation modeling of an axially-loaded hyperelastic cylindrical thin shell 轴向载荷超弹性圆柱薄壳弹性失稳与膨胀模型

4区材料科学

Soft Materials Pub Date : 2023-11-08 DOI: 10.1080/1539445x.2023.2274138

Md Moonim Lateefi, Somnath Sarangi

{"title":"Elastic instability and inflation modeling of an axially-loaded hyperelastic cylindrical thin shell","authors":"Md Moonim Lateefi, Somnath Sarangi","doi":"10.1080/1539445x.2023.2274138","DOIUrl":"https://doi.org/10.1080/1539445x.2023.2274138","url":null,"abstract":"ABSTRACTWhile inflating the thin-walled hyperelastic cylindrical cell, a localized type of instability occurs. After some deformation, the localization forms a bulge along the tube length. When a bulge reaches a specific diameter, it begins to spread axially. Such a phenomenon occurs at a single pressure value much lower than the pressure required to initiate the bulge. In this paper, we model such a phenomenon by predicting the effect of axial load on the value of limit pressure and bulge propagation pressure. In conjunction with existing experiments, we develop the model and determine the conditions that cause bulges to form and spread in an inflated thin cylindrical shell in the presence of an axial force. Using a newly proposed energy function, we demonstrate how axial tensile load influences bulge initiation and steady-state propagation in a thin cylindrical rubber shell. Experimental data and alternative models have both been used to validate the proposed mathematical model.KEYWORDS: Continuum mechanicshyperelasticityelastic instabilitycylindrical thin shells Disclosure StatementNo potential conflict of interest was reported by the author(s).","PeriodicalId":22140,"journal":{"name":"Soft Materials","volume":"6 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, liquid crystalline self-assembly, organogel behavior, and DFT investigation of first phenolphthalein-based hexacatenar 第一酚酞基六烯醚的合成、液晶自组装、有机凝胶行为及DFT研究

4区材料科学

Soft Materials Pub Date : 2023-10-05 DOI: 10.1080/1539445x.2023.2261430

Sha Wang, Xiaoqing Yi, Yurun Liang, Xiaotong Liu, Hongfei Gao, Yulong Xiao

{"title":"Synthesis, liquid crystalline self-assembly, organogel behavior, and DFT investigation of first phenolphthalein-based hexacatenar","authors":"Sha Wang, Xiaoqing Yi, Yurun Liang, Xiaotong Liu, Hongfei Gao, Yulong Xiao","doi":"10.1080/1539445x.2023.2261430","DOIUrl":"https://doi.org/10.1080/1539445x.2023.2261430","url":null,"abstract":"ABSTRACTDifferent building blocks in organic molecules could induce complex intermolecular interactions to lead to different supramolecular micro/nanostructures in bulk and solution states. Herein, the first new phenolphthalein-based hexacatenar containing a central phenolphthalein fluorochrome functionalized with two dendritic wings is synthesized by click reaction. The polarized optical microscopy, differential scanning calorimetry, and small-angle X-ray diffraction data demonstrated that the reported phenolphthalein-based hexacatenar could self-assemble into hexagonal columnar mesophase in the bulk state and could form organogel with distinct morphologies in some common organic solvents due to intermolecular interactions. Density functional theory calculation results showed highly twisted molecular conformation, distinct charge distribution, and asymmetrical electronic property, which might be essential for the stabilization of columnar mesophase and organogel. Therefore, this work provides a method to develop soft materials containing different functional building blocks with complex self-assemblies.KEYWORDS: Hexacatenarliquid crystalorganogelphenolphthalein AcknowledgmentsWe thank Professor Zhihong Li and beamline 1W2A at Beijing Synchrotron Radiation Facility (BSRF), China, for providing SAXS testing and data analysis.Disclosure StatementNo potential conflict of interest was reported by the author(s).Supplementary DataSupplemental data for this article can be accessed online at https://doi.org/10.1080/1539445X.2023.2261430.Additional informationFundingThis work was supported by China West Normal University Doctor Startup Fund [No. 412821], Major project funds of Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province [No. CSPC202101], The Science and Technology Department of Sichuan Province [No. 2022NSFSC1237] and Natural Science Foundation of China [No. 22265030].","PeriodicalId":22140,"journal":{"name":"Soft Materials","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135483961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uniaxial - biaxial lyotropic cholesteric phase transition of lyotropic liquid crystals 溶变液晶的单轴-双轴溶变胆甾相转变

IF 1.2 4区材料科学

Soft Materials Pub Date : 2023-08-21 DOI: 10.1080/1539445x.2023.2246951

P. Mukherjee

引用次数: 0

Fractional Maxwell viscoelastic model to explain dynamic magneto-viscoelastic properties of an isotropic magnetorheological elastomer containing flake-shaped magnetic particles 分数阶麦克斯韦粘弹性模型用于解释含有片状磁性颗粒的各向同性磁流变弹性体的动态磁粘弹性特性

IF 1.2 4区材料科学

Soft Materials Pub Date : 2023-08-21 DOI: 10.1080/1539445x.2023.2247002

Dipal M Patel, R. Upadhyay

引用次数: 0

Bigels as novel systems for the delivery active compounds from Centella asiatica Bigels作为递送积雪草活性化合物的新系统

IF 1.2 4区材料科学

Soft Materials Pub Date : 2023-08-08 DOI: 10.1080/1539445x.2023.2243922

Agnieszka Kulawik-Pióro, Emilia Osak, M. Mendrycka, Zuzanna Trześniewska-Ofiara

引用次数: 0

Effects of oxidation degree on the physicochemical properties of xanthan gum hydrogels containing N,O-carboxymethyl chitosan 氧化程度对含N, o -羧甲基壳聚糖黄原胶水凝胶理化性质的影响

IF 1.2 4区材料科学

Soft Materials Pub Date : 2023-07-03 DOI: 10.1080/1539445X.2023.2203719

Hien-Phuong Le, T. Tran, Dat-Quoc Do, Khanh-Ngoc Trinh-Phan, Le-Giang Tran, V. Vo, T. Nguyen

引用次数: 0

Structural transition in a ferroelectric nano-dispersed cholesteric liquid crystal 铁电纳米分散胆甾液晶的结构转变

IF 1.2 4区材料科学

Soft Materials Pub Date : 2023-07-03 DOI: 10.1080/1539445X.2023.2235329

S. Shoarinejad, Nanor Markarian

{"title":"Structural transition in a ferroelectric nano-dispersed cholesteric liquid crystal","authors":"S. Shoarinejad, Nanor Markarian","doi":"10.1080/1539445X.2023.2235329","DOIUrl":"https://doi.org/10.1080/1539445X.2023.2235329","url":null,"abstract":"ABSTRACT We present a theoretical study of the orientational and electrical behaviors of a cholesteric liquid crystal dispersed with ferroelectric nanoparticles. We assume a soft planar coupling between the liquid crystal molecules and the nanoparticles. We consider two spiral structures in the ferroelectric nano-dispersed system under an external electric field. This assumption is due to the fact that the director and the polarization vector would have different pitches of spiral structure. We study the behavior of the average polarization and the pitch of the helical structure as a function of the field strength. The impact of ferroelectric nanoparticles on cholesteric-nematic phase transition is investigated by calculating the critical electric field. The influence of field strength and material parameters on the phase transition is also discussed. The calculations are based on a developed continuum theory and a modified form of free energy for the helical supramolecular structure. The influence of nanoparticle volume fraction on the helix unwinding of both spiral structures is studied. It is found that an electric field with a sufficiently high strength causes an increase in the pitch of the helical structure of polarization. We obtain a critical volume fraction of nanoparticles, after which the pitch of the polarization helical structure differs from the director pitch.","PeriodicalId":22140,"journal":{"name":"Soft Materials","volume":"21 1","pages":"293 - 305"},"PeriodicalIF":1.2,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43142083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal conductivity of hydrogenated h-BN nanosheets: a reactive force field study 氢化h-BN纳米片热导率的反作用力场研究

IF 1.2 4区材料科学

Soft Materials Pub Date : 2023-07-03 DOI: 10.1080/1539445X.2023.2232773

J. F. Dethan

{"title":"Thermal conductivity of hydrogenated h-BN nanosheets: a reactive force field study","authors":"J. F. Dethan","doi":"10.1080/1539445X.2023.2232773","DOIUrl":"https://doi.org/10.1080/1539445X.2023.2232773","url":null,"abstract":"ABSTRACT Thermal conductivity of hydrogenated hexagonal boron nitride (h-BN) nanosheets was investigated using molecular dynamics simulation method. A newly parameterized reactive force field (ReaxFF) for hydrogen and h-BN interactions was used. ReaxFF was used due to its higher accuracy compared to other simpler interatomic potentials. Accurate thickness selection of a monolayer h-BN nanosheet has been shown to produce high thermal conductivity values for pristine armchair and zigzag nanosheets. It was further found that hydrogenation diminishes thermal conductivity of hydrogenated h-BN nanosheets. This reduction in thermal conductivity was due to the occurrence of sp2 to sp3 bonding transition when hydrogen atoms were placed on top of B and N atoms. The increase in temperature was also found to diminish thermal conductivity due to the occurrence of phonon–phonon scattering at higher temperatures. N-vacancy defect has then been shown to exhibit lower thermal conductivity compared to B-vacancy defect. Furthermore, the removal of more atoms contributes to higher decline in thermal conductivity. However, vacancy defect constructed along vertical direction provides the highest reduction in thermal conductivity. It is expected that this work provides useful insights for the design of an effective hydrogen storage system using these novel h-BN nanosheets.","PeriodicalId":22140,"journal":{"name":"Soft Materials","volume":"21 1","pages":"271 - 279"},"PeriodicalIF":1.2,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49389044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0