نتایج جستجو برای: hyperbranched copolymers

تعداد نتایج: 9697  

Journal: :Biomaterials 2011
Dirk Steinhilber Sebastian Seiffert John A Heyman Florian Paulus David A Weitz Rainer Haag

We report the preparation of polyglycerol particles on different length scales by extending the size of hyperbranched polyglycerols (3 nm) to nanogels (32 nm) and microgels (140 and 220 μm). We use miniemulsion templating for the preparation of nanogels and microfluidic templating for the preparation of microgels, which we obtain through a free-radical polymerization of hyperbranched polyglycer...

Journal: :The Journal of chemical physics 2007
G K Dalakoglou K Karatasos S V Lyulin A V Lyulin

Brownian dynamics simulations with explicit hydrodynamic interactions have been employed to study generic effects of size and topology in noncovalent (Coulombic-driven) complexes formed by irregular-shaped hyperbranched polymers and linear polyelectrolytes. The behavior of the complexes was explored in detail in terms of static and dynamic properties, both in local and in the entire complex sca...

M. Oftadeh, N. Madadi Mahani R. Bahjatmanesh Ardakani

Linear–dendrite copolymers containing hyper branched poly(citric acid) and linear poly(ethylene glycol) blocks PCA–PEG–PCA are promising nonmaterial to use  in nanomedicine. To investigate their potential application in biological systems (especially for drug carries) ONIOM2 calculations were applied to study the nature of particular interactions between drug and the polymeric nanoparticle...

Journal: :polyolefins journal 2014
laura boggioni incoronata tritto

highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (n) or of copolymerizing them with ethene (e) or propene (p). the polymers obtained show exciting structures and properties. e-n copolymers are industrially produced materials, with variable and high glass transitions depending on the wide range of their micr...

Journal: :Chemical communications 2005
Yu Chen Zhong Shen Holger Frey Julia Pérez-Prieto Salah-Eddine Stiriba

Self-assembly of hyperbranched polyethylenimine (PEI) and fatty acids leads to supramolecular inverted micellar structures that are able to irreversibly transfer water-soluble guest molecules into organic solvents.

Journal: :Chemical communications 2011
Hirotaka Ejima Kisei Matsumiya Toshiki Sawada Takeshi Serizawa

A peptide aptamer, which was originally identified by affinity screening for hyperbranched poly(phenylene vinylene) (hypPPV), functioned as an excellent dispersant for hypPPV nanoparticle formation.

Journal: :Macromolecular bioscience 2007
Shangjie Xu Ying Luo Rainer Haag

A simple general synthetic concept to build dendritic core-shell architectures with pH-labile linkers based on hyperbranched PEI cores and biocompatible PEG shells is presented. Using these dendritic core-shell architectures as nanocarriers, the encapsulation and transport of polar dyes of different sizes is studied. The results show that the acid-labile nanocarriers exhibit much higher transpo...

2012
Mariusz Ł. Mamiński Rafał Szymański Paweł Parzuchowski Andrzej Antczak Karolina Szymona

Two hyperbranched polyglycerols (HBPGs) and one oligoglycerol containing bisphenol A in the core of the molecule were synthesized from glycerol carbonate and applied as polyols in 2-component polyurethane adhesive systems. It was shown that mechanical performance of the joints made in solid wood depended on the hydroxyl functionality of the polyglycerol as well as on the type of the isocyanate ...

Journal: :Macromolecular rapid communications 2011
Zhishen Ge Hao Liu Yanfeng Zhang Shiyong Liu

Poly(N-isopropylacrylamide) (PNIPAM) oligomer containing one adamantyl (AD) and two β-cyclodextrin (β-CD) moieties at the chain terminals, AD-PNIPAM-(β-CD)(2), was synthesized by atom transfer radical polymerization (ATRP) and successive click reactions. In aqueous solution, AD-PNIPAM-(β-CD)(2) spontaneously forms supramolecular thermoresponsive hyperbranched polymers via molecular recognition ...

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