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616 Aktuelle Fachpublikationen zum Thema temperature

mit folgenden Suchkriterien:

How Composition Determines the Properties of Isodimorphic Poly(butylene succinate-ran-butylene azelate) Random Biobased Copolymers: From Single to Double Crystalline Random Copolymers

26.12.2014 | Idoia Arandia; Agurtzane Mugica; Manuela Zubitur; Arantxa Arbe; Guoming Liu; Dujin Wang; Rosica Mincheva; Philippe D ..., Macromolecules, 2014

The structure, morphology, and thermal properties of biobased and biodegradable poly(butylene succinate-ran-butylene azelate) random copolyesters with a wide composition range were studied. These PBS-ran-PBAz copolymers can crystallize in the entire composition range despite being random, ...


Microphase Separation and Crystallization in All-Conjugated Poly(3-alkylthiophene) Diblock Copolymers

26.12.2014 | Jing Ge; Ming He; Nan Xie; Xiubao Yang; Zhi Ye; Feng Qiu, Macromolecules, 2014

The microphase separation and crystallization of all-conjugated poly(3-butylthiophene)-b-poly(3-dodecylthiophene) (P3BDDT) diblock copolymers were systematically investigated by temperature-resolved wide-angle X-ray diffraction (WAXD), Fourier transform infrared (FTIR), and synchrotron ...


Nitroxide-Mediated Polymerization of 2-(Diethylamino)ethyl Methacrylate (DEAEMA) in Water

26.12.2014 | Ali Darabi; Abbas Rezaee Shirin-Abadi; Philip G. Jessop; Michael F. Cunningham, Macromolecules, 2014

Nitroxide-mediated polymerization (NMP) of 2-(diethylamino)ethyl methacrylate (DEAEMA) with a small amount of acrylonitrile (AN) as a comonomer was performed for the first time in water at 90 °C and atmospheric pressure using n-hydroxysuccinimidyl BlocBuilder (NHS-BB) alkoxyamine without addition ...


Micellar Morphologies of Block Copolymer Solutions near the Sphere/Cylinder Transition

24.12.2014 | Chya Yan Liaw; Kevin J. Henderson; Wesley R. Burghardt; Jin Wang; Kenneth R. Shull, Macromolecules, 2014

The thermoreversible self-assembly of poly(methyl methacrylate)-b-poly(tert-butyl methacrylate) (PMMA–PtBMA) diblock copolymers in 2-ethylhexanol has been studied in the transition regime between spherical and cylindrical morphologies. In these materials the PMMA block exhibits a strong ...


Interfacial Profile and Propagation of Frontal Photopolymerization Waves

22.12.2014 | Alessandra Vitale; Matthew G. Hennessy; Omar K. Matar; João T. Cabral, Macromolecules, 2014

We investigate the frontal photopolymerization of a thiol–ene system with a combination of experiments and modeling, focusing on the interfacial conversion profile and its planar wave propagation. We spatially resolve the solid-to-liquid front by FT-IR and AFM mechanical measurements, ...


Unique Rheological Response of Ultrahigh Molecular Weight Polyethylenes in the Presence of Reduced Graphene Oxide

22.12.2014 | Kangsheng Liu; Sara Ronca; Efren Andablo-Reyes; Giuseppe Forte; Sanjay Rastogi, Macromolecules, 2014

The paper addresses the difference in electrical conductivities and rheological properties between two nanocomposites of reduced graphene oxide nanosheets (rGON) with commercial ultrahigh molecular weight polyethylene (C_PE) and a low-entanglement-density UHMWPE synthesized under controlled ...


RAFT Dispersion Polymerization in Nonpolar Media: Polymerization of 3-Phenylpropyl Methacrylate in n-Tetradecane with Poly(stearyl methacrylate) Homopolymers as Macro Chain Transfer Agents

18.12.2014 | Yiwen Pei; Luckshen Thurairajah; Odilia R. Sugita; Andrew B. Lowe, Macromolecules, 2014

Poly(stearyl methacrylate) (PSMA) homopolymers, prepared by RAFT radical polymerization, have been employed in the RAFT dispersion polymerization (RAFTDP) of 3-phenylpropyl methacrylate (PPMA) in n-tetradecane. RAFTDPs yielded block copolymers with narrow molecular weight distributions and ...


Quadruple-Stimuli-Sensitive Polymeric Nanocarriers for Controlled Release under Combined Stimulation

12.12.2014 | Ziquan Cao; Hao Wu; Jie Dong; Guojie Wang, Macromolecules, 2014

Here we report a novel quadruple-stimuli-responsive block copolymer nanocarrier sensitive to pH, temperature, light, and reducing agent. The well-defined amphiphilic diblock copolymer poly(2-nitrobenzyl methacrylate)-SS-poly(dimethylaminoethyl methacrylate) (PNBM-SS-PDMAEMA) was synthesized via ...


Direct Formation of Different Crystalline Forms in Butene-1/Ethylene Copolymer via Manipulating Melt Temperature

11.12.2014 | Yaotao Wang; Ying Lu; Jiayi Zhao; Zhiyong Jiang; Yongfeng Men, Macromolecules, 2014

The crystallization behavior of a butene-1/ethylene random copolymer with 9.88 mol % ethylene counits was investigated by means of differential scanning calorimetry, wide- and small-angle X-ray scattering, and polarized optical microscopy. Unlike in its homopolymer counterpart which crystallizes ...


Temperature Driven Macromolecule Separation by Nanoconfinement

10.12.2014 | Ilaria De Santo; Filippo Causa; Paolo A. Netti, Macromolecules, 2014

We focused on the influence of temperature variations on macromolecule partitioning between unconfined and nanoconfined areas in nanoslits using single molecule measurements. We evaluated the number of fluorescent poly(ethylene glycol) (PEG) molecules confined in glass nanoslits in several ...


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