Skip to main content
search
All Posts By

Characterization of phospholipid vesicles containing lauric acid: physicochemical basis for process and product development

Farkuh, Laura; Hennies, Paulo T.; Nunes, Cláudia; Reis, Salette; Barreiros, Luisa; Segundo, Marcela A.; Oseliero Filho, Pedro L.; Oliveira, Cristiano L. P.; Cassago, Alexandre; Portugal, Rodrigo V.; Muramoto, Rodrigo A.; Carretero, Gustavo P. B.; Schreier, Shirley; Chaimovich, Hernan; Cuccovia, Iolanda M.

 ApplicationCharacterizationCustomer publicationsLipidsMaterialParticle interactionsParticlesPhase analysisSAXSSizeStructural biologySurfactantsTechnique

Characterization of phospholipid vesicles containing lauric acid: physicochemical basis for process and product development

Farkuh, Laura; Hennies, Paulo T.; Nunes, Cláudia; Reis, Salette; Barreiros, Luisa; Segundo, Marcela A.; Oseliero Filho, Pedro L.; Oliveira, Cristiano L. P.; Cassago, Alexandre; Portugal, Rodrigo V.; Muramoto, Rodrigo A.; Carretero, Gustavo P. B.; Schreier, Shirley; Chaimovich, Hernan; Cuccovia, Iolanda M.

Lauric acid (LAH) strongly inhibits the growth of acne-causing bacteria. LAH is essentially water-insoluble and the solubility of laurate (LA) salts are medium and temperature dependent. Hence, LAH/LA preparations are difficult to formulate. Here we fully characterized phospholipid vesicles containing up to 50 mol% LAH. Vesicles of dipalmitoylphosphatidylcholine (DPPC) containing…
Introducing Functionality to Fluorinated Electroactive Polymers

Kallitsis, Konstantinos; Soulestin, Thibaut; Tencé-Girault, Sylvie; Brochon, Cyril; Cloutet, Eric; Domingues Dos Santos, Fabrice; Hadziioannou, Georges

 (Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsMaterialPhase analysisPolymer researchSAXSTechniqueTemperatureWAXS

Introducing Functionality to Fluorinated Electroactive Polymers

Kallitsis, Konstantinos; Soulestin, Thibaut; Tencé-Girault, Sylvie; Brochon, Cyril; Cloutet, Eric; Domingues Dos Santos, Fabrice; Hadziioannou, Georges

Fluorinated electroactive polymers (FEPs) are among the most interesting insulating materials for the production of organic electronic devices. Their ability to tune their response to an applied electric field makes them appropriate for vastly different applications in electronics. However, due to the chemical inertness of such polymers and the rather…
Strong, Water-Stable Ionic Cable from Bio-Hydrogel

Kong, Weiqing; Li, Tian; Chen, Chaoji; Chen, Gegu; Brozena, Alexandra H.; Liu, Dapeng; Liu, Yang; Wang, Chengwei; Gan, Wentao; Wang, Sha; He, Shuaiming; Hu, Liangbing

 (Hydro)gels(Natural) polymersApplicationCharacterizationCustomer publicationsFibersMaterialOrientation analysisOtherSAXSTechnique

Strong, Water-Stable Ionic Cable from Bio-Hydrogel

Kong, Weiqing; Li, Tian; Chen, Chaoji; Chen, Gegu; Brozena, Alexandra H.; Liu, Dapeng; Liu, Yang; Wang, Chengwei; Gan, Wentao; Wang, Sha; He, Shuaiming; Hu, Liangbing

Nanofluids have attracted much attention due to their various applications in energy storage, water desalination, and ionic circuits. However, the practical applications of the existing ionic conductors are limited due to their poor mechanical strength and stability in water. Here, inspired by nature, we develop a mechanically robust and water-stable…
Effects of Hard Segment of Polyurethane with Disulfide Bonds on Shape Memory and Self-Healing Ability

Ha, Yu-Mi; Seo, Hae Cheon; Kim, Young-O; Khil, Myung-Seob; Cho, Jae Whan; Lee, Jae-Suk; Jung, Yong Chae

 (Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSSelf-assembled materialTechnique

Effects of Hard Segment of Polyurethane with Disulfide Bonds on Shape Memory and Self-Healing Ability

Ha, Yu-Mi; Seo, Hae Cheon; Kim, Young-O; Khil, Myung-Seob; Cho, Jae Whan; Lee, Jae-Suk; Jung, Yong Chae

Self-healing polyurethane with disulfide bonds was synthesized using polycarbonate diol as a soft segment, and methylene diphenyl diisocyanate and 2-hydroxyethyl disulfide as a hard segment. Well-developed phase separation as the hard segments increased was confirmed by Fourier transform infrared spectra. The X-ray diffraction data showed that the crystallinity of the…
Effective corrosion protection by eco-friendly self-healing PMMA-cerium oxide coatings

Harb, Samarah Vargas; Trentin, Andressa; de Souza, Thiago Augusto Carneiro; Magnani, Marina; Pulcinelli, Sandra Helena; Santilli, Celso Valentim; Hammer, Peter

 (Natural) polymersApplicationCharacterizationCompositesCustomer publicationsFractal dimensionInorganic materialsMaterialSAXSSizeTechnique

Effective corrosion protection by eco-friendly self-healing PMMA-cerium oxide coatings

Harb, Samarah Vargas; Trentin, Andressa; de Souza, Thiago Augusto Carneiro; Magnani, Marina; Pulcinelli, Sandra Helena; Santilli, Celso Valentim; Hammer, Peter

Metallic alloys are extensively used in many technological applications, however their susceptibility to corrosion causes huge economical losses and can result in failure of critical components. Aiming to obtain environmentally friendly, self-healing and high efficient anticorrosive coatings, organic-inorganic hybrids consisting of poly(methyl methacrylate) (PMMA) covalently bonded to CeO2/Ce2O3…
Aescin-Induced Conversion of Gel-Phase Lipid Membranes into Bicelle-like Lipid Nanoparticles

Geisler, Ramsia; Pedersen, Martin Cramer; Hannappel, Yvonne; Schweins, Ralf; Prévost, Sylvain; Dattani, Rajeev; Arleth, Lise; Hellweg, Thomas

 ApplicationCharacterizationCustomer publicationsMaterialProteins & DNA/RNASAXSShapeSizeStructural biologySurfactantsTechnique

Aescin-Induced Conversion of Gel-Phase Lipid Membranes into Bicelle-like Lipid Nanoparticles

Geisler, Ramsia; Pedersen, Martin Cramer; Hannappel, Yvonne; Schweins, Ralf; Prévost, Sylvain; Dattani, Rajeev; Arleth, Lise; Hellweg, Thomas

Mixtures of the phospholipid 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) and the saponin ?-aescin spontaneously form monodisperse, bilayered discoidal micelles (also known as “bicelles” or “nanodisks”) in aqueous solution. Such bicelles form below the melting temperature of DMPC when the phospholipids are in the rigid L?? state and are precursors of spontaneously formed vesicles.…
Towards mechanical robust yet self-healing polyurethane elastomers via combination of dynamic main chain and dangling quadruple hydrogen bonds

Hu, Jin; Mo, Ruibin; Jiang, Xiang; Sheng, Xinxin; Zhang, Xinya

 (Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSSelf-assembled materialTechnique

Towards mechanical robust yet self-healing polyurethane elastomers via combination of dynamic main chain and dangling quadruple hydrogen bonds

Hu, Jin; Mo, Ruibin; Jiang, Xiang; Sheng, Xinxin; Zhang, Xinya

One of the greatest challenges of robust self-healing materials is the confliction between high chain mobility for self-healing and a stable structure for mechanical strength. Herein, dangling 2-ureido-4-pyrimidione (UPy)-functionalized side groups were introduced into the hard segments of thermoplastic polyurethane (TPU) elastomers, where embedded the dynamic disulfide bonds in the…
How Confinement Affects the Nucleation, Crystallization, and Dielectric Relaxation of Poly(butylene succinate) and Poly(butylene adipate) Infiltrated within Nanoporous Alumina Templates

Safari, Maryam; Maiz, Jon; Shi, Guangyu; Juanes, Diana; Liu, Guoming; Wang, Dujin; Mijangos, Carmen; Alegría, Ángel; Müller, Alejandro J.

 (Natural) polymersApplicationCharacterizationCustomer publicationsGIWAXSInorganic materialMaterialOrientation analysisPhase analysisPolymer researchSurface structure and patternsTechnique

How Confinement Affects the Nucleation, Crystallization, and Dielectric Relaxation of Poly(butylene succinate) and Poly(butylene adipate) Infiltrated within Nanoporous Alumina Templates

Safari, Maryam; Maiz, Jon; Shi, Guangyu; Juanes, Diana; Liu, Guoming; Wang, Dujin; Mijangos, Carmen; Alegría, Ángel; Müller, Alejandro J.

This work describes the successful melt infiltration of poly(butylene succinate) (PBS) and poly(butylene adipate) (PBA) within 70 nm diameter anodic aluminum oxide (AAO) templates. The infiltrated samples were characterized by SEM, Raman, and FTIR spectroscopy. The crystallization behaviors and crystalline structures of both polymers, bulk and confined, were analyzed by…
Influence of hydrogen bonding on the crystallization behavior of poly(ethylene oxide)/ionic liquids mixtures

Li, Wenze; Gong, Pengjian; Huang, Yajiang; Niu, Yanhua; Li, Guangxian

 (Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsMaterialPhase analysisPolymer researchSAXSTechniqueTemperatureWAXS

Influence of hydrogen bonding on the crystallization behavior of poly(ethylene oxide)/ionic liquids mixtures

Li, Wenze; Gong, Pengjian; Huang, Yajiang; Niu, Yanhua; Li, Guangxian

Two types of imidazolium-based ionic liquids (ILs) and and their mixtures were blended with poly(ethylene oxide) (PEO) matrix to tune the strength of intermolecular hydrogen bonding in the system. With the addition of ILs, particularly increasing ratio, significantly reduced overall crystallization kinetics in the order of pure…
Elaboration of microporous CeO2 thin layers having nanocrystallites network controlled by Pluronic P123: Impact of key experimental parameters

Lu, Zijie; Rébiscoul, Diane; Causse, Jeremy; le Goff, Xavier; Mollard, Nicolas; Deschanels, Xavier

 ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialOtherSAXSTechniqueWAXS

Elaboration of microporous CeO2 thin layers having nanocrystallites network controlled by Pluronic P123: Impact of key experimental parameters

Lu, Zijie; Rébiscoul, Diane; Causse, Jeremy; le Goff, Xavier; Mollard, Nicolas; Deschanels, Xavier

Microporous ceria thin films having nanocrystallites network were synthesized by evaporation-induced self-assembly process, using P123 amphiphilic copolymer as structure-directing agent. The impact of key experimental parameters, i.e., the sol ageing, the relative humidity (RH), the thermal treatment, on the thin layer elaboration were investigated. The results show that the organization…
Close Menu