Category

Characteristic dimension

ApplicationCharacteristic dimensionCharacterizationCustomer publicationsLipidsMaterialProteins & DNA/RNASAXSStructural biologyTechnique

Alginate-coating of artemisinin-loaded cochleates results in better control over gastro-intestinal release for effective oral delivery

Shuddhodana; Judeh, Zaher

Development of new drug delivery systems for effective delivery of poorly water-soluble drugs is important. We report the development of cochleate-based formulation for the oral administration of poorly water-soluble artemisinin (ART). Cochleates offer great potential as vehicles for the oral delivery of ART due to their high drug encapsulation and…
sergio.rodrigues@xenocs.com
25 November 2019
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialNanoparticles & colloidsParticlesSAXSSelf-assembled materialTechnique

Hierarchical self-assembly of 3D lattices from polydisperse anisometric colloids

Luo, Binbin; Kim, Ahyoung; Smith, John W.; Ou, Zihao; Wu, Zixuan; Kim, Juyeong; Chen, Qian

Anisometric colloids—which have both nanometer and micrometer dimensions—combine features of their two constituent length scales. Here, using optical microscopy and modeling, the authors find that highly polydisperse anisometric colloids self-assemble into 3D, periodic lattices in a manner hardly inaccessible to nano- or micron-scale…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPhase analysisPolymer researchSAXSSelf-assembled materialTechniqueTemperatureWAXS

Topochemical polymerization of hierarchically ordered diacetylene monomers within the block copolymer domains

Krishnan, Deepthi; B, Amal Raj R.; Gowd, E. Bhoje

Integration of polymerizable small molecules within block copolymer based supramolecules provides a new strategy to generate functional materials. Herein we report hydrogen-bonding complexes of photopolymerizable 10,12-pentacosadyionic acid (PCDA) and polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP). We systematically investigate how annealing conditions affect the hierarchical ordering and…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCompositesCustomer publicationsMaterialPolymer researchSAXSTechnique

A robust self-healing polyurethane elastomer: From H-bonds and stacking interactions to well-defined microphase morphology

Fan, Cheng-Jie; Huang, Zi-Chun; Li, Bei; Xiao, Wen-Xia; Zheng, En; Yang, Ke-Ke; Wang, Yu-Zhong

Self-healing materials have attracted considerable attention because of their improved safety, lifetime, energy efficiency and environmental impact. Supramolecular interactions have been extensively considered in the field of self-healing materials due to their excellent reversibility and sensitive responsiveness to environmental stimuli. However, development of a polymeric material with good…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSTechnique

Effects of Diisocyanate Structure and Disulfide Chain Extender on Hard Segmental Packing and Self-Healing Property of Polyurea Elastomers

Li, Ting; Zheng, Tianze; Han, Jiarui; Liu, Zhanli; Guo, Zhao-Xia; Zhuang, Zhuo; Xu, Jun; Guo, Bao-Hua

Four linear polyurea elastomers synthesized from two different diisocyanates, two different chain extenders and a common aliphatic amine-terminated polyether were used as models to investigate the effects of both diisocyanate structure and aromatic disulfide chain extender on hard segmental packing and self-healing ability. Both direct investigation on hard segments and…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSTechnique

A comparison of non-isocyanate and HDI-based poly(ether urethane): Structure and properties

Shen, Ziyun; Zheng, Liuchun; Li, Chuncheng; Liu, Guoming; Xiao, Yaonan; Wu, Shaohua; Liu, Jiajian; Zhang, Bo

DMC-derived poly (ether urethanes) were prepared via isocyanate-free route. The transurethanization reaction of the non-isocyanate route needs higher temperature as compared with the traditional route. There may be some unknown side reactions under high temperature which lead to changes in chemical structure and subsequent thermal and mechanical properties of the…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSSelf-assembled materialTechnique

Light-induced healing in azobenzene bridged silsesquioxanes

Galante, María J.; Zucchi, Ileana A.; Oyanguren, Patricia A.; Sáiz, Luciana M.

Intrinsic healable polymers are materials capable of repairing itself through its chemical nature, in order to improve stability and durability and to restore the lost functionalities or properties. In this study, azobenzene (AZO) moieties were incorporated into a previously reported bridged silsesquioxane based on the reaction of isocyanatepropyltriethoxysilane (IPTS) with…
sergio.rodrigues@xenocs.com
25 November 2019
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsGISAXSInorganic materialMaterialNanoparticles & colloidsOrientation analysisParticlesSurface structure and patternsTechniqueThin films

Transforming an inert nanopolymer into broad-spectrum bactericidal by superstructure tuning

Scilletta, Natalia A.; Pezzoni, Magdalena; Desimone, Martín F.; Soler-Illia, Galo J.A.A.; Catalano, Paolo N.; Bellino, Martín G.

Poloxamer block copolymers (also known as Pluronic®) are particularly useful for drug delivery and self-assembly techniques. These nanopolymers are generally considered to be biologically inert and they were used to generate only bacteria repellent surfaces but keeps bacteria alive and as a latent threat. However, the inherent capabilities of these…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCompositesCustomer publicationsMaterialPolymer researchSAXSTechnique

Reprocessable Supramolecular Thermoplastic BAB-Type Triblock Copolymer Elastomers with Enhanced Tensile Strength and Toughness via Metal–Ligand Coordination

Wang, Wentao; Zhang, Juan; Jiang, Feng; Wang, Xuehui; Wang, Zhigang

A new strategy was proposed to enhance tensile strength, toughness, and extensibility of BAB-type reprocessable supramolecular triblock copolymer elastomers (STBCPEs) by simply incorporating 1-vinylimidazole (VI) as a minor comonomer to introduce metal–ligand coordinate bonds of minor contents into the soft matrix. Poly(n-butyl acrylate-co-1-vinylimidazole)-b-poly(isobornyl…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPhase analysisPolymer researchSAXSTechniqueTemperatureWAXS

De-symmetrizing periodically grafted amphiphilic copolymers: design, synthesis and generation of Janus folded chains

Sarkar, Ramkrishna; Gowd, E. Bhoje; Ramakrishnan, S.

Periodically grafted amphiphilic copolymers (PGACs) were earlier shown to fold in a zigzag fashion to enable segregation of the two immiscible segments, namely the backbone and the pendant segments; crystallization of one or both segments led to the formation of a lamellar structure with the two segments located in alternate…
sergio.rodrigues@xenocs.com
25 November 2019