PS/CTAB/silica composites from room temperature polymerization of high internal phase emulsion gels

Tan, Zhulin; Xu, Gu; Li, Zhe‐Fei; Regev, Oren; Maddumaarachchi, Madhubhashini; Blum, Frank D.

doi:10.1016/j.jcis.2015.04.002

Cited by 13 publications

(47 citation statements)

References 39 publications

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“…Polymerizations of MMA at low temperatures not only allowed the retention of the activity of immobilized biomolecules during and after the polymerization, but it also enhanced the thermal properties of the resulting materials [6,17]. In this paper, we extend our prior work on the low temperature polymerization of styrene to MMA [9]. Because of the differences in polarity of MMA compared with styrene, the polymerization show some complications not observed in the styrene systems.…”

Section: Introductionmentioning

confidence: 85%

“…1) occurred because of the presence of three-dimensional networks of fumed silica particles in MMA dispersions [9,19]. The MMA/ fumed silica gel was translucent because the refractive index of fumed silica (1.46) is close to that of MMA (1.41).…”

Section: Gel Stability and Polymerizationmentioning

confidence: 99%

“…Free radical polymerizations at low temperatures also showed narrower polydispersities [4,5], different tacticities [6], and structures compared with higher temperature polymerizations. Conducting free radical polymerizations at low temperatures is important, and can be achieved by using metallic catalysts [7], redox initiators [8], irradiation [4], or, more recently, emulsion gels [9][10][11]. It is the later which is the focus of this work.…”

Section: Introductionmentioning

confidence: 99%

“…Kinetics data from the cationic surfactant, cetyltrimethylammonium bromide (CTAB) and AIBN system suggested that the AIBN and CTAB formed a complex [10], which accelerates the decomposition of AIBN. Therefore, it is possible to conduct the free radical polymerization at lower than normal temperatures [9,11]. For example, emulsion gels containing 90% of styrene monomers were polymerized at 21°C in 24 h through CTAB catalysis, and mono-dispersed polystyrene(PS)/CTAB/silica nanoparticles were obtained [9].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is possible to conduct the free radical polymerization at lower than normal temperatures [9,11]. For example, emulsion gels containing 90% of styrene monomers were polymerized at 21°C in 24 h through CTAB catalysis, and mono-dispersed polystyrene(PS)/CTAB/silica nanoparticles were obtained [9].…”

Section: Introductionmentioning

confidence: 99%

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Low-temperature polymerization of methyl methacrylate emulsion gels through surfactant catalysis

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Section: Introductionmentioning

confidence: 85%

Section: Gel Stability and Polymerizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low-temperature polymerization of methyl methacrylate emulsion gels through surfactant catalysis

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Journal of Colloid and Interface Science

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The Chemistry of Porous Polymers: The Holey Grail

Silverstein

2020

Israel Journal of Chemistry

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Porous polymers have been evolving continuously since the introduction of foam rubber in 1929. Today, pore diameters ranging from sub‐nanometre to millimetre can be generated controllably. Cutting‐edge porous polymers are now being applied at the forefront of critical problems with societal and environmental impact including advanced systems for biomedicine, water purification, energy storage, and gas purification and storage. The commonly‐used pore generation approaches include macromolecular design, self‐assembly, phase separation, solid and liquid templating, sol‐gel formation, and foaming. In each, The Chemistry of Polymers, both the polymerization chemistry and the macromolecular structural chemistry, must be applied advantageously to generate the empty volume within the polymer and then fix it in place. This essay will traverse the various pore size scales, describing the chemistries involved and discussing their implications.

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Disruptions in the crystallinity of poly(lauryl methacrylate) due to adsorption on silica

Arua

Blum

2017

J Polym Sci B Polym Phys

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The effects of adsorption of poly(lauryl methacrylate) (PLMA), a side-chain crystalline polymer, on silica were investigated. Fourier transform infrared spectroscopy and differential scanning calorimetry (DSC) measurements were made on both bulk and adsorbed PLMA. The reversible heat flow rates were observed as a function of temperature and the degree of crystallinity of the samples determined based on the broad melting transitions of the side chains in the surface samples. It was found that adsorption caused a disruption of the side-chain crystallinity primarily in the tightly bound layer of the polymer, but did not significantly affect its glass transition temperature. A change in the packing of the hydrophobic side chains, as a result of adsorption, was also observed for the tightly adsorbed polymer. These results indicated that PLMA side chains in proximity to the silica surface have different properties from those in bulk PLMA.

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PS/CTAB/silica composites from room temperature polymerization of high internal phase emulsion gels

Cited by 13 publications

References 39 publications

Low-temperature polymerization of methyl methacrylate emulsion gels through surfactant catalysis

Low-temperature polymerization of methyl methacrylate emulsion gels through surfactant catalysis

The Chemistry of Porous Polymers: The Holey Grail

Disruptions in the crystallinity of poly(lauryl methacrylate) due to adsorption on silica

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