نتایج جستجو برای: Miniemulsion polymerization

تعداد نتایج: 30444  

Journal: :Chemical communications 2010
Ronan McHale Negar Ghasdian Yibo Liu Michael B Ward Nicole S Hondow Huihui Wang Yuqing Miao Rik Brydson Xiaosong Wang

Metal coordination polymer nanoboxes are reported for the first time. Initially spherical miniemulsion droplet templates were transformed to hollow cubic crystalline nanostructures via a miniemulsion periphery polymerization conducted under benign thermal and chemical conditions.

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Weili Qiang Yilong Wang Ping He Hong Xu Hongchen Gu Donglu Shi

Asymmetric nanocomposite particle pairs of polystyrene and silica were prepared via one-step miniemulsion polymerization for the first time. The transmission electron microscopy images showed that these nanocomposite particle pairs were monodisperse and highly asymmetric in morphology. The key to obtaining the asymmetric nanocomposite particle pairs was the combination of miniemulsion polymeriz...

2008
F. Joseph Schork Juchen Guo F. J. Schork J. Guo

Most miniemulsion polymerizations are carried out in batch reactors. However, continuous reactors or continuous reactor trains can provide a high level of consistency when operated at steady state. In this feature article, progress in continuous miniemulsion polymerization will be reviewed. Special attention will be given to issues of monomer diffusion and secondary nucleation. A large portion ...

2003
Ufuk Yildiz Katharina Landfester Markus Antonietti

Miniemulsion polymerization is a new way to synthesize polymer nanoparticles in the size range of 40–500 nm with high morphological uniformity and chemical flexibility. Focusing on the very small particles, miniemulsion polymerization already steps into the range of microemulsion polymerization, however, with a minimum expense of surfactant which is up to a factor of 10 lower than in microemuls...

2010
Daniel Crespy Katharina Landfester

The miniemulsion technique is a particular case in the family of heterophase polymerizations, which allows the formation of functionalized polymers by polymerization or modification of polymers in stable nanodroplets. We present here an overview of the different polymer syntheses within the miniemulsion droplets as reported in the literature, and of the current trends in the field.

2011
Siqing Cheng Per B Zetterlund S. Cheng P. B. Zetterlund

Implementation of controlled/living radical polymerization in miniemulsion (typically with oil droplet diameter of 20-500 nm) for synthesis of well-defined, polymeric nanoparticles is of particular interest as miniemulsions possess the inherent advantage that ideally each monomer droplet is transformed into a polymer particles(Zetterlund et al., 2008). However, the high energy requirement for m...

Journal: :Chemical communications 2009
Xueping Ge Mozhen Wang Qiang Yuan Hua Wang Xuewu Ge

Novel anisotropic hybrid particles with various morphologies have been synthesized by radiation miniemulsion polymerization for the first time.

Journal: :Polymer Chemistry 2021

Reaction parameters, such as droplet size, initiator solubility and monomer solubility, which are important in favouring nucleation a miniemulsion thiol–ene step polymerization reviewed.

2009
Juchen Guo Kyu Yong Choi F. Joseph Schork

The copolymerizations of a gaseous monomer (ethylene) and a liquid monomer (vinyl acetate) via emulsion and miniemulsion polymerizations are reported. Reactions in which the vinyl acetate was introduced in both batch and semibatch modes are carried out. (Ethylene introduction is always in a semibatch model since the polymerization is carried out under a constant pressure of ethylene in the reac...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2009
Elisabetta Canetta Jeanne Marchal Chun-Hong Lei Fanny Deplace Alexander M König Costantino Creton Keltoum Ouzineb Joseph L Keddie

Tackifying resins (TRs) are often added to pressure-sensitive adhesive films to increase their peel strength and adhesion energy. In waterborne adhesives, the TR is dispersed in water using surfactants and then blended with colloidal polymers in water (i.e., latex). In such waterborne systems, there are problems with the colloidal stability and difficulty in applying coatings of the particle bl...

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