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Synthesis of 3‐(tert‐Butoxycarbonylmethyl)‐N‐vinyl‐2‐caprolactam and Homologous Copolymerization Toward Biocompatible Carboxylated Poly(N‐vinyl‐2‐caprolactam) Responsive to pH and Temperature

Shuangcheng Tang、Yu Cao、Samuel C. Goddard 等 4 位作者2013-10-29Journal of Polymer Science Part A Polymer Chemistry

ABSTRACT A new monomer derivative of N ‐vinyl‐2‐caprolactam (VCL), namely 3‐( tert ‐butoxycarbonylmethyl)‐ N ‐vinyl‐2‐caprolactam (TBMVCL), was synthesized via nucleophilic substitution at the α‐carbon to the lactam carbonyl group. The monomer was copolymerized radically with VCL and the copolymer compositions were co…

Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical Applications

Self‐aligning liquid crystals in polymer composite systems

Luciano De Sio、Nelson V. Tabiryan2013-10-29Journal of Polymer Science Part B Polymer Physics

ABSTRACT Soft composite materials combined with a holographic photopolymerization process are used for realizing an innovative switchable periodic structure made of slices of almost pure polymer alternated with films of well aligned nematic liquid crystals named POLICRYPS. It exhibits negligible scattering losses, whi…

Photonic and Optical DevicesLiquid Crystal Research AdvancementsPhotorefractive and Nonlinear Optics

Measurement of a Photoinduced Transition from a Nonordered Phase to a Transient Ordered Phase in the Organic Quantum-Paraelectric Compound dimethyltetrathiafulvalene-dibromodichloro-p-benzoquinone Using Femtosecond Laser Irradiation

Tatsuya Miyamoto、Kazuki Kimura、Takanori Hamamoto 等 8 位作者2013-10-29Physical Review Letters

We report a new photoinduced transition from a nonordered phase to a transient ordered phase with symmetry breaking in an organic charge-transfer compound, dimethyltetrathiafulvalene (DMTTF)-dibromodichloro-p-benzoquinone (2,6QBr(2)Cl(2)), which is a neutral compound located near the neutral-ionic phase boundary and s…

Transition Metal Oxide NanomaterialsOrganic and Molecular Conductors ResearchSolid-state spectroscopy and crystallography

Popcorn-like morphology of asymmetric nanoparticles co-adjusted by hydrophilicity and crosslinking degree of the seeds

Xiao Liu、Mingwang Pan、Jinfeng Yuan 等 6 位作者2013-10-29RSC Advances

This paper presents a facile synthesis method for poly(methyl methacrylate-co-acetoacetoxyethyl methacrylate)–polystyrene popcorn-like particles by soap-free seeded emulsion polymerization. In this study, popcorn-like, raspberry-like and reverse core–shell structures of the P(MMA-co-AAEM)–PS particles could be obtaine…

Proteins in Food SystemsSurfactants and Colloidal SystemsPickering emulsions and particle stabilization

Cu_2O/MgO band alignment and Cu_2O-Au nanocomposites with enhanced optical absorption

Xuemin Wang、Dawei Yan、Changle Shen 等 10 位作者2013-10-29Optical Materials Express

Single crystalline Cu2O film has been successfully synthesized on MgO(100) surface through laser molecular beam epitaxy. In situ reflection high-energy electron diffraction was employed to study the epitaxial growth of Cu2O. The composition and structure of the Cu2O were studied in detail by in situ X-ray photoelectro…

ZnO doping and propertiesCopper-based nanomaterials and applicationsElectronic and Structural Properties of Oxides

Modulation of Reaction Kinetics for the Tuneable Synthesis of Gold Nanoparticles and Quantum Clusters: Application of Gold Quantum Clusters as “Turn‐Off” Sensing Probe for Sn4+ Ions

Puneet Khandelwal、Dheeraj K. Singh、Subha Sadhu 等 4 位作者2013-10-29ChemPlusChem

Abstract The syntheses of gold nanoparticles (Au NPs) and gold quantum clusters (Au QCs) that employ cefadroxil (CFX; an antibiotic) as both reducing and capping agents are reported. The HAuCl 4 /CFX concentration, temperature, and pH are crucial factors in the modulation of the nucleation and growth kinetics of the r…

Advanced biosensing and bioanalysis techniquesNanocluster Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis

Defect Structure, Phase Separation, and Electrical Properties of Nonstoichiometric Tetragonal Tungsten Bronze Ba0.5–xTaO3–x

Xiaojun Kuang、Fengjuan Pan、Jiang Cao 等 7 位作者2013-10-29Inorganic Chemistry

New insight into the defect chemistry of the tetragonal tungsten bronze (TTB) Ba(0.5-x)TaO(3-x) is established here, which is shown to adapt to a continuous and extensive range of both cationic and anionic defect stoichiometries. The highly nonstoichiometric TTB Ba(0.5-x)TaO(3-x) (x = 0.25-0.325) compositions are stab…

Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesElectronic and Structural Properties of Oxides

Tensile Strength and Water Absorption Behavior of Recycled Jute-Epoxy Composites

Sihan Wang、Reza Masoodi、J. B. Brady 等 4 位作者2013-10-29JOURNAL OF RENEWABLE MATERIALS

Recycled natural fi bers and biopolymers with sustainable, eco-friendly, and biodegradable properties are receiving increased attention. The moisture absorption and swelling of natural fi ber composites adversely infl uence their mechanical properties and applications. In this research, bio-based epoxy polymers that a…

Nanocomposite Films for Food PackagingNatural Fiber Reinforced CompositesPolymer composites and self-healing

Reactive, intumescent, halogen‐free flame retardant for polypropylene

Guixun Li、Wanjie Wang、Shaokui Cao 等 5 位作者2013-10-29Journal of Applied Polymer Science

ABSTRACT A reactive, intumescent, halogen‐free flame retardant, 2‐({9‐[(4,6‐diamino‐1,3,5‐triazin‐2‐yl)amino]‐3,9‐dioxido‐2,4,8,10‐tetraoxa‐3,9‐diphosphaspiro[5.5]undecan‐3‐yl}oxy)ethyl methacrylate (EADP), was synthesized through a simple three‐step reaction from phosphorus oxychloride, pentaerythritol, hydroxyethyl…

Synthesis and characterization of novel inorganic/organometallic compoundsFlame retardant materials and propertiesSynthesis and properties of polymers

Influence of Processing Parameters During Small‐Scale Batch Melt Mixing on the Dispersion of MWCNTs in a Poly(propylene) Matrix

Beatriz Mayoral、José N. Canongia Lopes、Tony McNally2013-10-29Macromolecular Materials and Engineering

The relationship between varying processing variables, rotor speed (50 to 200 rpm) and mixing time (10 to 30 min), and MWCNT loading (0.5 to 2.0 wt%), on MWCNT dispersion in a poly(propylene) during batch melt mixing was investigated. MWCNT dispersion was improved by increasing rotor speed and/or mixing time, 200 rpm…

Advanced Sensor and Energy Harvesting MaterialsPolymer crystallization and propertiesPolymer Nanocomposites and Properties

Directing the self-assembly of supra-biomolecular nanotubes using entropic forces

Luis Ruiz Pestana、Sinan Keten2013-10-29Soft Matter

Peptide self-assembly, ubiquitous in biology, is one of the most promising 'bottom-up' approaches for the generation of synthetic supramolecular architectures. However, directing the self-assembly of functional peptides into predictable ordered structures most often requires precise tuning of weak intermolecular force…

Supramolecular Chemistry and ComplexesSupramolecular Self-Assembly in MaterialsPolydiacetylene-based materials and applications

Structure stability and high-temperature distortion resistance of trilayer complexes formed from graphenes and boron nitride nanosheets

Jianhui Yuan、K.M. Liew2013-10-29Physical Chemistry Chemical Physics

The molecular dynamics was employed to study the structure stability and high-temperature distortion resistance of a trilayer complex formed by a monolayer graphene sandwiched in bilayer boron nitride nanosheets (BN-G-BN) and graphenes (G-G-G). The investigation shows that the optimal interlayer distances are about 0.…

Graphene research and applicationsThermal properties of materialsBoron and Carbon Nanomaterials Research

Synthesis and characterization of a novel aliphatic polyester based on itaconic acid

Yumin Wu、Qingwei Xie、Chuanhui Gao 等 5 位作者2013-10-29Polymer Engineering and Science

A novel potentially biobased aliphatic polyester poly (butylene 2‐methylsuccinate) (PBMS) was synthesized from 1,4‐butanediol (BDO) and 2‐methylsuccinate acid (MSA) via direct esterification and polycondensation route using tetrabutyl titanate (TBT) as catalyst. The reaction conditions were investigated in detail. The…

Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesPolymer Science and PVC

Large, Negative Magnetoresistance in an Oleic Acid-Coated Fe3O4 Nanocrystal Self-Assembled Film

Shigemi Kohiki、Tomoki Kinoshita、Koichiro Nara 等 5 位作者2013-10-29ACS Applied Materials & Interfaces

An oleic acid-coated Fe3O4 nanocrystal self-assembled film was fabricated via drop casting of colloidal particles on a SiO2/Si substrate. The film exhibited bifurcation of the zero-field-cooled and field-cooled magnetizations around 250 K. The nonlinear current-voltage (I-V) characteristics between the source and drai…

Multiferroics and related materialsMagnetic Properties and Synthesis of FerritesIron oxide chemistry and applications

Computer simulation of strain-induced phase transformations in thin Fe films

Binjun Wang、Herbert M. Urbassek2013-10-29Modelling and Simulation in Materials Science and Engineering

Using molecular-dynamics simulation and the Meyer–Entel potential, we study the response of thin Fe films (thickness ⩽10 nm) to tensile in-plane strain. The simulations are performed at a temperature slightly below the equilibrium phase transition temperature. For the four surface orientations studied, we typically fi…

Microstructure and mechanical propertiesMicrostructure and Mechanical Properties of Steelsnanoparticles nucleation surface interactions

Paper-supported elastomeric opal films for enhanced and reversible solvatochromic response

Christian Schäfer、Markus Biesalski、G. P. Hellmann 等 5 位作者2013-10-29Journal of Nanophotonics

Paper-supported solvent-responsive elastomeric opal films based on hard-soft core-interlayer-shell spheres featuring remarkably distinct iridescent reflection colors were investigated. By using extrusion and compression molding, elastomeric opal films could be obtained, which were incorporated into a porous paper shee…

Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsPhotochromic and Fluorescence Chemistry

Color rendition engineering of phosphor-converted light-emitting diodes

A. Žukauskas、Rimantas Vaicekauskas、P. Vitta 等 6 位作者2013-10-29Optics Express

phosphors and finding the optimal peak wavelengths of the phosphor bands as functions of the luminous efficacy of radiation. A blue component due to either phosphor photoluminescence or InGaN electroluminescence with the peak wavelength at about 460 nm was found to be an optimal one for the high-fidelity, color-dullin…

Luminescence Properties of Advanced MaterialsGas Sensing Nanomaterials and SensorsPigment Synthesis and Properties

Sulfonation of low‐density polyethylene and its impact on polymer properties

Mohib R. Kazimi、Tahir Shah、Saidatul Shima Jamari 等 5 位作者2013-10-29Polymer Engineering and Science

Sulfonation of polymers is of great importance for the packaging industry mainly due to its effect on the alteration of surface functionality of polymer films. In this study we customized liquid phase sulfonation of low‐density polyethylene (LDPE) swelling the polymer by using a combination of polar and nonpolar solve…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesRecycling and Waste Management Techniques

Benzyl ester of dehydrated castor oil fatty acid as plasticizer for poly(vinyl chloride)

Bhakti Mehta、Mukesh Kathalewar、Anagha Sabnis2013-10-29Polymer International

Abstract The poly(vinyl chloride) ( PVC ) industry plays an important role in today's total plastics industry. The major volume of PVC is used as soft and plasticized PVC . PVC applications consume approximately 80% of the total production of plasticizers. Most of the common plasticizers are aromatic esters of phthali…

biodegradable polymer synthesis and propertiesEffects and risks of endocrine disrupting chemicalsPolymer Science and PVC