Pellach, Michal; Atsmon-Raz, Yoav; Simonovsky, Eyal; Gottlieb, Hugo; Jacoby, Guy; Beck, Roy; Adler-Abramovich, Lihi; Miller, Yifat; Gazit, Ehud
Spontaneous Structural Transition in Phospholipid-Inspired Aromatic Phosphopeptide Nanostructures
Phospholipid membranes could be considered a prime example of the ability of nature to produce complex yet ordered structures, by spontaneous and efficient self-assembly. Inspired by the unique properties and architecture of phospholipids, we designed simple amphiphilic decapeptides, intended to fold in the center of the peptide sequence, with a…
Star-Shaped Poly(l-lactide) with a Dipyridamole Core: Role of Polymer Chain Packing on Induced Circular Dichroism and Photophysical Properties of Dipyridamole
Nagarajan, Selvaraj; Gowd, E. Bhoje
The dipyridamole is emissive in the solution state; however, the emission is weakened in the solid state due to the aggregation-caused quenching. The aggregation of dipyridamole can be prevented by synthesizing star-shaped poly(l-lactide) (SSPLLA) using dipyridamole core. During crystallization of the polymer, chromophore molecules were expelled out of crystalline lamellae…
Stretching temperature dependence of the critical strain in the tensile deformation of polyethylene copolymer
Liao, Tao; Jiang, Zhiyong; Li, Rui; Gao, Yuxin; Men, Yongfeng
The deformation behavior and structural evolution of the quenched ethylene-butene copolymer under uniaxial loading and unloading were investigated as a function of stretching temperature using step-cycle tests, in situ small angle X-ray scattering (SAXS), and wide angle X-ray diffraction (WAXD) measurements. The true stress-strain curves together with detailed analysis of…
Strengthening mechanisms in Fe-Al based ferritic low-density steels
Pramanik, Sudipta; Koppoju, Suresh; Anupama, A. V.; Sahoo, Balaram; Suwas, Satyam
Low-density steels with different aluminium contents have been investigated with an aim to examine the occurrence of different strengthening mechanisms leading to its higher strength. A composition corresponding to 6.8wt% aluminium has been studied to understand the underlying strengthening mechanisms. Different factors contributing to the strengthening mechanisms have been separately…
Structural characterization of multilamellar liposomes coencapsulating curcumin and vitamin D3
Chaves, Matheus Andrade; Oseliero Filho, Pedro Leonidas; Jange, Camila Garcia; Sinigaglia-Coimbra, Rita; Oliveira, Cristiano Luis Pinto; Pinho, Samantha Cristina
This study aimed the production of multilamellar liposomes coencapsulating two hydrophobic bioactives, curcumin and vitamin D3, which present antioxidant and nutraceutical properties. Liposomes were produced by proliposomes hydration and stabilized with a mixture of xanthan and guar gums. Proliposomes were produced by coating of micronized sucrose method. Physicochemical properties of…
Structural Diversity and Phase Behavior of Brush Block Copolymer Nanocomposites
Song, Dong-Po; Gai, Yue; Yavitt, Benjamin M.; Ribbe, Alexander; Gido, Samuel; Watkins, James J.
Macromolecules, 2016, vol 49, 17, pp. 6480–6488DOI:Visit the full articleBack to the overview
Structural evolution of poly(l-lactide) block upon heating of the glassy ABA triblock copolymers containing poly(l-lactide) A blocks
Nagarajan, S.; Deepthi, Krishnan; Gowd, E. Bhoje
Two triblock ABA copolymers poly(l-lactide-b-dimethylsiloxane-b-l-lactide) (PLLA-b-PDMS-b-PLLA) and poly(l-lactide-b-ethylene glycol-b-l-lactide) (PLLA-b-PEG-b-PLLA) containing poly(l-lactide) were synthesized by ring opening polymerization of l-lactide using bis(hydroxyalkyl) terminated PDMS and hydroxyl end-capped polyethylene glycol as macroinitiators, respectively. Both the triblock…
Structural Flexibility of CaV1.2 and CaV2.2 I-II Proximal Linker Fragments in Solution
Almagor, Lior; Avinery, Ram; Hirsch, Joel A.; Beck, Roy
Biophysical Journal, 2013, vol 104, 11, pp. 2392-2400DOI:10.1016/j.bpj.2013.04.034Visit the full articleBack to the overview
Structural evolution from shish-kebab to fibrillar crystals during hot-stretching process of gel spinning ultra-high molecular weight polyethylene fibers obtained from low concentration solution
Wang, Zongbao; An, Minfang; Xu, Haojun; Lv, You; Tian, Feng; Gu, Qun
The pre-stretched gel-spinning ultra-high molecular weight polyethylene fibers with low concentration solution obtained from industrial production line were used to study the structural transition from shish-kebab to fibrillar crystals during hot-stretching process via in-situ small-angle X-ray scattering, wide-angle X-ray diffraction measurements, and scanning electron microscopy. With the…
Structural Phase Transitions of Syndiotactic Polystyrene upon the Guest Extraction Process
Shaiju, P.; Gowd, Erathimmanna Bhoje
In this work, the effects of initial morphology/crystalline form and the guest molecules used for the preparation of syndiotactic polystyrene (sPS) co-crystals, on the structural phase transitions of sPS upon the guest extraction process were systematically investigated. For that purpose, samples having two different initial morphologies such as amorphous and…