bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characterization of the fracture behavior of glass fiber reinforced thermoplastics based on PP, PE‐HD, and PB‐1
Authors: Schoßig Marcus , Grellmann Wolfgang , Mecklenburg Thomas 
Published: October 2009

AbstractThis article deals with the influence of the polymeric matrix, such as isotactic polypropylene (iPP), polyethylene (PE‐HD), and isotactic polybutene‐1 (iPB‐1), and the glass fiber content on the material behavior of short glass fiber reinforced thermoplastics. The glass fiber content of all materials ranged between 0 and 50 wt %, which corresponds to a volume content between 0 and approx. 0.264. To describe the mechanical properties of all materials, the stiffness, strength, hardness, and toughness behavior were determined. The crack toughness behavior regarding unstable crack propagation was also assessed by applying fracture mechanics concepts. It was found that the energy‐determined J‐values for the PP material system reach their maximum at a glass fiber content of 0.135. In contrast, the crack toughness of the PE‐HD materials increases continuously with increasing glass fiber content due to the unchanged deformation ability at simultaneously increasing strength. The toughness level of the PB‐1 materials is nearly the same independent of the glass fiber content due to the opposite trend of the load and the deformation ability. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Effect of experimental parameters on the formation of chitosan–poly(acrylic acid) nanofibrous scaffolds and evaluation of their potential application as DNA carrier
Authors: Wang Jian‐Wen , Chen Ching‐Yi , Kuo Yi‐Ming 
Published: October 2009

AbstractGene delivery from tissue engineering scaffolds has demonstrated the ability to promote gene transfer and stimulate new tissue formation. In this article we report a novel nanofibrous scaffold based on polyelectrolyte complexes as a vehicle for delivery of DNA. When polycation chitosan (CS) was dropped into polyanion poly(acrylic acid) (PAA) suspension and freeze‐dried, CS‐PAA nanofibrous scaffold with diverse microstructure would be formed under different experimental conditions. The nanofiber size was affected by the CS molecular weight, the concentration of CS, the volume ratio of CS to PAA, the reaction temperature, the incubation time, and the final pH of the suspension as well. By using adipic acid as branch promoter, adjusting the pH value of the CS solution to 3, and then dropping CS into the PAA solution at a ratio of 3 : 1, a nanofibrous structure with average diameter 140 nm is obtained after the suspension is freeze‐dried. These nanofibrous scaffolds were nontoxic and can encapsulate plasmid DNA very well. Transgenic expression in human dermal fibroblasts seeded on the nanofibrous scaffolds was significant after 14 days compared to lipofectamine controls. This result indicates that CS‐PAA nanofibrous scaffold have favorable characteristics for nonviral gene delivery to mammalian cell, and have the potential to enhance gene transfer in tissue engineering. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Kinetic study of polyurethane synthesis using different catalytic systems of Fe, Cu, Sn, and Cr
Authors: de Lima Viviane , da Silva Pelissoli Nicole , Dullius Jeane , Ligabue Rosane , Einloft Sandra 
Published: October 2009

AbstractThis work presents a comparative study between alternative catalytic systems, metal‐β‐diketones complexes (iron, copper, chromium, and tin), and the commercial catalyst dibutyltin dilaurate, DBTDL, in the polyurethanes synthesis obtained from isophorone diisocyanate (IPDI) and polyols as polypropyleneglycol/diethyleneglycol and 1,6‐hexanodiol polyadipate (polyester A‐Mn = 2000 g/mol and polyester B‐Mn = 1000 g/mol) reactions. The polyurethanes synthesis was followed by the IPDI consumption in time, verified by infrared spectroscopy (FTIR) through the decrease of free NCO characteristic band at 2300–2200 cm−1. The FTIR data was used to determine the polyurethanes formation kinetic behavior. It was verified that for the reactions with polyethers excess, DBTDL catalyst was more effective when compared to metal‐β‐diketones complexes, while for the reactions with polyester, A and B, the metal‐β‐diketones complexes were more effective. © 2009 Wiley Periodicals, Inc. JAppl Polym Sci, 2010
Effects of inorganic nano‐particles on plasticizers migration of flexible PVC
Authors: Yang Baohong , Bai Yongping , Cao Yingjie 
Published: October 2009

AbstractThe influences of nano‐particles (nano‐sized CaCO3 and nano‐sized SiO2) on plasticizers volatility, solvent extraction stability, and exudation stability of flexible PVC were studied. The results showed that nano‐particles could reduce migration of plasticizers, thus improved the ability of anti‐migration of flexible PVC. Further more, nano‐sized SiO2 shows excellent property than nano‐sized CaCO3 in resistance migration of plasticizers. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Preparation and characterization of PVA films with magnetic nanoparticles: The effect of particle loading on drug release behavior
Authors: Bertoglio Paula , Jacobo Silvia E. , Daraio Marta E. 
Published: October 2009

AbstractThis article deals with the drug release behavior of theophylline (Th) from poly(vinyl alcohol) (PVA) hydrogels, prepared with magnetic nanoparticles at different particle loadings. These biocompatible matrices were obtained by incorporating different amounts of an aqueous ferrofluid into PVA hydrogels, loaded with Th as a marker for drug‐delivery studies. PVA films with magnetic particles proved to be magnetic field‐responsive materials as the drug release decreased through the application of a relative low and uniform magnetic field for particle concentrations of 0.9% w/w or higher. Moreover, the percentage of restriction of drug release is found to be correlated with particle loading. The in vitro release profiles were analyzed by applying a semiempirical power law to obtain the kinetic parameters. The value of the release exponent was found to be in the range 0.54–0.56 in all experiments, which thus indicates a predominant diffusional mechanism for drug release from these smart magnetic hydrogels. This effect suggests the possibility of modulating the release behavior by controlling the particle content in the preparation of the composites. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Chemical and mechanical characterization of two South‐American plant fibers for polymer reinforcement: Caranday Palm and Phormium
Authors: Krause Sammartino L. E. , Aranguren M. I. , Reboredo M. M. 
Published: October 2009

AbstractTwo South‐American plants, native Caranday Palm and Phormium, were characterized to investigate their potential as a source of fibers for the preparation of polymer composites. The plant leaves were subjected to different chemical characterizations, whose results were further corroborated by Fourier transformed infrared spectroscopy and Thermogravimetric analysis techniques. The results showed that leaves from Caranday Palm have higher cellulose content than Phormium leaves. The tensile testing of the technical fibers showed that they may be suitable for use in the production of polymer composites, as the properties are comparable to those of other vegetable technical fibers. Preliminary results on the effect of the incorporation of Caranday Palm fibers into polypropylene lead to a composite of improved modulus and relatively low density. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Synthesis and characterization of phosphorus‐containing polystyrene
Authors: Petreus Oana , Avram Ecaterina , Lisa Gabriela , Serbezeanu Diana 
Published: October 2009

AbstractChemical modification of a chloromethylated polystyrene (CMPSt) was performed by the reaction of the chlorometyl group with the PH bond of 9,10‐dihydro‐oxa‐10‐phosphaphenanthrene‐10‐oxide. A kinetic study on the phosphorylation reaction of CMPSt with different chlorine contents and/or different molecular weighs was reported. The obtained polymers bearing phosphorus containing cyclic bulky groups were characterized by analytical methods, FTIR and 1H NMR spectroscopy. Their thermal behavior and flammability were also studied. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Control of release characteristics in pH‐sensitive poly(vinyl alcohol)/poly(acrylic acid) microcapsules containing chemically treated alumina core
Authors: Yun Jumi , Kim Hyung‐Il 
Published: October 2009

AbstractThe pH‐sensitive poly(vinyl alcohol)/poly(acrylic acid) hydrogel microcapsules containing vitamin B12‐loaded Al2O3 core were prepared with a three‐step emulsion polymerization. Al2O3 was chemically treated with HCl or NaOH solutions at room temperature for 24 h to modify the binding properties with vitamin B12. The colon‐targeted release characteristics of vitamin B12 from the microcapsules were evaluated at different pHs. These microcapsules showed the faster and larger release of vitamin B12 due to the high swelling of microcapsule shell as the pH was changed into more basic condition. However, these microcapsules showed the slower and less release of vitamin B12 as the acid value of Al2O3 increased due to the strong binding interaction between Al2O3 core and vitamin B12 even though the initial loading of vitamin B12 was higher. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Gene expression profiling in the fetal cardiac tissue after folate and low‐dose trichloroethylene exposure
Authors: Caldwell Patricia T. , Manziello Ann , Howard Jamie , Palbykin Brittany , Runyan Raymond B. , Selmin Ornella 
Published: October 2009

AbstractBACKGROUND: Previous studies show gene expression alterations in rat embryo hearts and cell lines that correspond to the cardio‐teratogenic effects of trichloroethylene (TCE) in animal models. One potential mechanism of TCE teratogenicity may be through altered regulation of calcium homeostatic genes with a corresponding inhibition of cardiac function. It has been suggested that TCE may interfere with the folic acid/methylation pathway in liver and kidney and alter gene regulation by epigenetic mechanisms. According to this hypothesis, folate supplementation in the maternal diet should counteract TCE effects on gene expression in the embryonic heart. APPROACH: To identify transcriptional targets altered in the embryonic heart after exposure to TCE, and possible protective effects of folate, we used DNA microarray technology to profile gene expression in embryonic mouse hearts with maternal TCE exposure and dietary changes in maternal folate. RESULTS: Exposure to low doses of TCE (10 ppb) caused extensive alterations in transcripts encoding proteins involved in transport, ion channel, transcription, differentiation, cytoskeleton, cell cycle, and apoptosis. Exogenous folate did not offset the effects of TCE exposure on normal gene expression, and both high and low levels of folate produced additional significant changes in gene expression. CONCLUSIONS: A mechanism by which TCE induces a folate deficiency does not explain altered gene expression patterns in the embryonic mouse heart. The data further suggest that use of folate supplementation, in the presence of this toxin, may be detrimental and not protective of the developing embryo Birth Defects Research (Part A), 2010. © 2009 Wiley‐Liss, Inc.
ChemInform Abstract: Experimental Detection and Theoretical Characterization of Germanium‐Doped Lithium Clusters LinGe (n = 1—7).
Authors: Ngan Vu Thi , De Haeck Jorg , Le Hai Thuy , Gopakumar G. , Lievens Peter , Nguyen Minh Tho 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Structures, Phase Transitions, Hydration, and Ionic Conductivity of Ba4Nb2O9.
Authors: Ling Chris D. , Avdeev Maxim , Kutteh Ramzi , Kharton Vladislav V. , Yaremchenko Aleksey A. , Fialkova Svitlana , Sharma Neeraj , Macquart Rene B. , Hoelzel Markus , Gutmann Matthias 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: CdCu3(OH)6(NO3)2: An S = 1/2 Kagome Antiferromagnet.
Authors: Nytko Emily A. , Shores Matthew P. , Helton Joel S. , Nocera Daniel G. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Modeling of the Phase Evolution in Mg1‐xAlxB2 (0 < x < 0.5) and Its Experimental Signatures.
Authors: Andersson David A. , Casillas Luis , Baskes Michael I. , Lezama Juan S. , Conradson Steven D. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Powder Second Harmonic Generation Measurement and Thermal Decomposition Mechanisms of a New Organometallic Compound [(18C6)Li][Cd(SCN)3].
Authors: Zhang J. J. , Huang Y. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Microstructure, Surface Composition and Chemical Stability of Partly Ordered LaTiO2N.
Authors: Logvinovich Dmitry , Bocher Laura , Sheptyakov Denis , Figi Renato , Ebbinghaus Stefan G. , Aguiar Rosiana , Aguirre Myriam H. , Reller Armin , Weidenkaff Anke 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Crystal Structure of the High‐Pressure Iron Borate β‐FeB2O4.
Authors: Neumair Stephanie C. , Glaum Robert , Huppertz Hubert 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Vicinal Benzo[b]thiophene‐5,6‐dicarboxaldehyde in Heterocyclic Synthesis: A Reagent for Fluorescence Determination of Amino Acids.
Authors: El‐Borai Mohamed A. , Rizk Hala F. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Facile Generation of C—S Bonds via One‐Pot, Odorless and Efficient Thia‐Michael Addition Reactions Using Alkyl, Aryl or Allyl Halides, Thiourea and Electron‐Deficient Alkenes in Wet Polyethylene Glycol (PEG 200) under Mild Reaction Conditions.
Authors: Firouzabadi Habib , Iranpoor Nasser , Abbasi Mohammad 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of 1,3‐Disubstituted Symmetrical/Unsymmetrical Ureas via Cs2CO3‐Catalyzed Transamination of Ethylene Carbonate and Primary Amines.
Authors: Jagtap Sachin R. , Patil Yogesh P. , Panda Anil G. , Bhanage Bhalchandra M. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Pd(O2CCF3)2/Benzoquinone: A Versatile Catalyst System for the Decarboxylative Olefination of Arene Carboxylic Acids.
Authors: Hu Peng , Kan Jian , Su Weiping , Hong Maochun 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Grubbs′ Catalyst Promoted Oxacycloisomerization: An Easy Route to Bicyclic Dihydrofurans and Tricyclic Acetals.
Authors: Taleb Assya , Lahrech Mokhtar , Hacini Salih , Thibonnet Jerome , Parrain Jean‐Luc 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Two‐Directional Cross‐Metathesis.
Authors: Newton Annabella F. , Roe Stephen J. , Legeay Jean‐Christophe , Aggarwal Pooja , Gignoux Camille , Birch Nicola J. , Nixon Robert , Alcaraz Marie‐Lyne , Stockman Robert A. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Simple, Efficient, and Selective Deuteration via a Flow Chemistry Approach.
Authors: Mandity Istvan M. , Martinek Tamas A. , Darvas Ferenc , Fueloep Ferenc 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Primary Amine‐Thioureas Based on tert‐Butyl Esters of Natural Amino Acids as Organocatalysts for the Michael Reaction.
Authors: Kokotos Christoforos G. , Kokotos George 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Intermolecular Rhodium‐Catalyzed Hydroacylation of Allenes: The Regioselective Synthesis of β,γ‐Unsaturated Ketones.
Authors: Randell‐Sly Helen E. , Osborne James D. , Woodward Robert L. , Currie Gordon S. , Willis Michael C. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Effective Chiral Ferrocenyl Phosphine‐Thioether Ligands in Enantioselective Palladium‐Catalyzed Allylic Alkylations.
Authors: Cheung Hong Yee , Yu Wing‐Yiu , Au‐Yeung Terry T. L. , Zhou Zhongyuan , Chan Albert S. C. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chiral Lanthanum(III)‐Binaphthyldisulfonate Complexes for Catalytic Enantioselective Strecker Reaction.
Authors: Hatano Manabu , Hattori Yasushi , Furuya Yoshiro , Ishihara Kazuaki 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reactions of ortho‐Lithiophenyl (‐Hetaryl) Isocyanides with Carbonyl Compounds: Rearrangements of 2‐Metalated 4H‐3,1‐Benzoxazines.
Authors: Lygin Alexander V. , de Meijere Armin 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: P(i‐PrNCH2CH2)3N: Efficient Catalyst for Synthesizing β‐Hydroxyesters and α,β‐Unsaturated Esters Using α‐Trimethylsilylethylacetate (TMSEA).
Authors: Wadhwa Kuldeep , Verkade John G. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Bicyclic Salicylates by [3 + 3] Cyclization of 1,3‐Bis(silyl enol ethers) with Cyclic 3‐(Silyloxy)alk‐2‐en‐1‐ones.
Authors: Hoettecke Nicole , Reinke Helmut , Fischer Christine , Langer Peter 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: An Efficient Non‐Catalytic, Regioselective Approach to the Synthesis of Angularly Fused Polycyclic Systems.
Authors: Pratap Ramendra , Ram Vishnu Ji 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Di‐ and Trinuclear [70]Fullerene Complexes: Syntheses and Metal—Metal Electronic Interactions
Authors: Matsuo Yutaka , Tahara Kazukuni , Fujita Takeshi , Nakamura Eiichi 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.