The Effect of Initiators on the Emulsion Polymerization of 2-hydroxyethyl Methacrylate

Chu, Hsin‐Sen; Lin, Chi-Shen

doi:10.1023/b:jpol.0000004631.64826.3c

Cited by 13 publications

(3 citation statements)

References 20 publications

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“…However, all the coagulum in the experiment is lower than 1%, which is less than that without nano-SiO 2 (10). The reason is that all the hydrophilic monomer HEMA and AA are dissolved in water (81 wt% in water for HEMA (12)) and polymerize in a water phase forming primary radical (oligomer), when the concentration of the oligometric emulsifier exceeds critical chain length, it precipitates and forms emulsion particles. The combination of oligometric emulsifier and mixture of 1% emulsifiers SDS/OP make the emulsion system stable.…”

Section: Effect Of Level Of Nano-sio 2 On Polymerizationmentioning

confidence: 86%

Studies on Acrylic Emulsion Polymerization Containing Hydrophilic Hydroxyl Monomer in the Presence of Nano‐SiO₂Particles

Zhang

2007

Journal of Macromolecular Science, Part A

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Emulsion polymerization with nano-scale SiO 2 particles as seeds composed of methyl methacrylate (MMA), butyl acrylate (BA), hydroxyethyl methacrylate (HEMA), and acrylic acid (AA) was studied from varying reaction temperatures, level of SiO 2 particle, HEMA, and emulsifier. The morphology of the emulsion particle was examined with a transmission electron microscope (TEM). The results showed that the addition of nano-SiO 2 particles decreased the coagulum greatly when its level was lower than 7%. The coagulum also decreased with the increasing of temperature from 658C to 758C. The level of HEMA and emulsifier had little influence on the coagulum in the presence of nano-SiO 2 . The particle size of the emulsion increased with the increase of level of nano-SiO 2 and HEMA. Part of the emulsion particles connected together due to the existence of HEMA, and yet some of the nano-SiO 2 particles were not covered with polymer.

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Section: Effect Of Level Of Nano-sio 2 On Polymerizationmentioning

confidence: 86%

Studies on Acrylic Emulsion Polymerization Containing Hydrophilic Hydroxyl Monomer in the Presence of Nano‐SiO₂Particles

Zhang

2007

Journal of Macromolecular Science, Part A

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“…The determination of PS size and size distribution is derived from Eshuis et al 34 The number-average, volume-average, and weightaverage diameters (i.e., D n , D v , and D w , respectively) are defined as usual. 35 If one were to assume a single-sized population following a Gaussian distribution, then the polydispersity index (PDI) related to the standard deviation () of the hypothetical Gaussian distribution is shown below:…”

Section: Characterizationmentioning

confidence: 99%

Synthesis of polystyrene nanolatexes via emulsion polymerization using sodium dodecyl sulfonate as the emulsifier

Yang

2014

High Performance Polymers

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Polystyrene (PS) nanolatexes were successfully prepared via emulsion polymerization using sodium dodecyl sulfonate as the emulsifier. The effects of emulsifier concentration, initiator concentration, polymerization reaction time, and polymerization reaction temperature on particle size and size distribution of PS colloidal spheres were investigated, respectively. The particle size of the diluted polymer emulsion was about 20 nm, as determined by laser scattering. These obtained PS particles were also characterized using Fourier transform infrared spectroscopy and scanning electron microscopy.

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“…The polymerization of 2-hydroxyethyl methacrylate (HEMA), using a series of initiators (2,2'-azobisisbutyronitrile, 2,2'-azobis-(2-amidinopropane) dihydrochloride, 4,4'-azobis(4-cyanopentanoic acid) (ACPA), 1,1'-azobis(cyclohexane carbonitrile)) and using either sodium lauryl sulfate (SLS) as emulsifier or a mixture of SLS and poly(vinyl pyrrolidone) (PVP) as tensioactive system, has been already reported [8].…”

Section: Introductionmentioning

confidence: 99%

Upon the Delivery Properties of a Polymeric System Based on Poly(2-Hydroxyethyl Methacrylate) Prepared with Protective Colloids

Niţă¹,

Chiriac²,

Nistor³

et al. 2013

JBNB

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A comparative study related to the preparation of poly(2-hydroxyethyl methacrylate) (pHEMA) through radical polymerization process in the presence of three different protective colloid substances, respectively poly(vinyl alcohol) (PVA), β-cyclodextrin, or poly(aspartic acid) (PAS), is presented. The dependence of the thermal behavior of the polymers as well as their morphological aspect, on the protective colloids used in synthesis was evidenced by polymers characterization. It is also demonstrated that the swelling capacity is dependent on the protective colloid variant present during the pHEMA preparation. This behavior induces as well interdependence on the ability to load bioactive compounds onto the polymeric matrices. The distribution of the indomethacin (INN), as model drug, into the pHEMA network was put into evidence by near infrared chemical imaging (NIR-CI), a non-destructive technique and with its correspondingly statistical analysis.

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The Effect of Initiators on the Emulsion Polymerization of 2-hydroxyethyl Methacrylate

Cited by 13 publications

References 20 publications

Studies on Acrylic Emulsion Polymerization Containing Hydrophilic Hydroxyl Monomer in the Presence of Nano‐SiO₂Particles

Studies on Acrylic Emulsion Polymerization Containing Hydrophilic Hydroxyl Monomer in the Presence of Nano‐SiO₂Particles

Synthesis of polystyrene nanolatexes via emulsion polymerization using sodium dodecyl sulfonate as the emulsifier

Upon the Delivery Properties of a Polymeric System Based on Poly(2-Hydroxyethyl Methacrylate) Prepared with Protective Colloids

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The Effect of Initiators on the Emulsion Polymerization of 2-hydroxyethyl Methacrylate

Cited by 13 publications

References 20 publications

Studies on Acrylic Emulsion Polymerization Containing Hydrophilic Hydroxyl Monomer in the Presence of Nano‐SiO2Particles

Studies on Acrylic Emulsion Polymerization Containing Hydrophilic Hydroxyl Monomer in the Presence of Nano‐SiO2Particles

Synthesis of polystyrene nanolatexes via emulsion polymerization using sodium dodecyl sulfonate as the emulsifier

Upon the Delivery Properties of a Polymeric System Based on Poly(2-Hydroxyethyl Methacrylate) Prepared with Protective Colloids

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Product

Resources

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Studies on Acrylic Emulsion Polymerization Containing Hydrophilic Hydroxyl Monomer in the Presence of Nano‐SiO₂Particles

Studies on Acrylic Emulsion Polymerization Containing Hydrophilic Hydroxyl Monomer in the Presence of Nano‐SiO₂Particles