Surface initiated polymerizations from silica nanoparticles

Radhakrishnan, Bindushree; Ranjan, Rajesh; Brittain, William J.

doi:10.1039/b516508c

Cited by 274 publications

(245 citation statements)

References 85 publications

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“…[85] Polymerizations initiated from silica particles have been reviewed. [233] Surface modification of silica particles with silane functional RAFT agent 18 was used to attach dithiobenzoate groups which were subsequently grafted with polystyrene, PBA or PBA-block-polystyrene by RAFT polymerization. [86] Dithiobenzoate RAFT agents with tertiary 'R' were attached by reacting amino functional silica particles with 37.…”

Section: Grafting-from Processesmentioning

confidence: 99%

Living Radical Polymerization by the RAFT Process—A First Update

Moad¹,

Rizzardo²,

Thang³

2006

Aust. J. Chem.

859

787

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This paper provides a first update to the review of living radical polymerization achieved with thiocarbonylthio compounds (ZC(=S)SR) by a mechanism of Reversible Addition-Fragmentation chain Transfer (RAFT) published in June 2005. The time since that publication has witnessed an increased rate of publication on the topic with the appearance of well over 200 papers covering various aspects of RAFT polymerization ranging over reagent synthesis and properties, kinetics, and mechanism of polymerization, novel polymer syntheses, and diverse applications.

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Section: Grafting-from Processesmentioning

confidence: 99%

Living Radical Polymerization by the RAFT Process—A First Update

Moad¹,

Rizzardo²,

Thang³

2006

Aust. J. Chem.

859

787

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“…This approach allows for higher graft densities with larger molecular weights than the "grafting to" method, since the growing end of the polymer is exposed to (or very close to) the monomercontaining solvent. [102] A chain-growth polymerization technique is necessary in order to prevent cross-linking of adjacent brushes. Ideal polymerization techniques should have low selftermination rates, in order to achieve a high and controllable degree of polymerization and low polydispersity.…”

Section: Prospective Articlesmentioning

confidence: 99%

Hairy nanoparticle assemblies as one-component functional polymer nanocomposites: opportunities and challenges

et al. 2013

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Over the past three decades, the combination of inorganic-nanoparticles and organic-polymers has led to a wide variety of advanced materials, including polymer nanocomposites (PNCs). Recently, synthetic innovations for attaching polymers to nanoparticles to create "hairy nanoparticles" (HNPs) has expanded opportunities in this field. In addition to nanoparticle compatibilization for traditional particle-matrix blending, neat-HNPs afford one-component hybrids, both in composition and properties, which avoids issues of mixing that plague traditional PNCs. Continuous improvements in purity, scalability, and theoretical foundations of structure-performance relationships are critical to achieving design control of neat-HNPs necessary for future applications, ranging from optical, energy, and sensor devices to lubricants, green-bodies, and structures.

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“…In order to control the clusters formation or the particles dispersion, the interfacial interaction between particles and polymer could be tuned via an external trigger like magnetic field [12], or via an internal one, modifying the particles surface: grafting surfactants [13] or longer molecules, up to polymer chains via the "grafting from" or "grafting to" methods [14]. Grafting polymer chains on the fillers can be used to control the internal organization in the composites and study the effect of the change in interfacial interactions on particles dispersion and mechanical properties of the nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Tuning the mechanical properties in model nanocomposites: Influence of the polymer‐filler interfacial interactions

Chevigny

Jouault

Dalmas

et al. 2011

J Polym Sci B Polym Phys

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This paper presents a study of the polymer-filler interfacial effects on filler dispersion and mechanical reinforcement in Polystyrene (PS) / silica nanocomposites by direct comparison of two model systems: un-grafted and PS-grafted silica dispersed in PS matrix. The structure of nanoparticles has been investigated by combining Small Angle Neutron Scattering (SANS) measurements and Transmission Electronic Microscopic (TEM) images. The mechanical properties were studied over a wide range of deformation by plate/plate rheology and uni-axial stretching. At low silica volume fraction, the particles arrange, for both systems, in small finite size non-connected aggregates and the materials exhibit a solid-like behavior independent of the local polymer/fillers interactions suggesting that reinforcement is dominated by additional long range effects. At high silica volume fraction, a continuous connected network is created leading to a fast increase of reinforcement whose amplitude is then directly dependent on the strength of the local particle/particle interactions and lower with grafting likely due to deformation of grafted polymer.

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Surface initiated polymerizations from silica nanoparticles

Cited by 274 publications

References 85 publications

Living Radical Polymerization by the RAFT Process—A First Update

Living Radical Polymerization by the RAFT Process—A First Update

Hairy nanoparticle assemblies as one-component functional polymer nanocomposites: opportunities and challenges

Tuning the mechanical properties in model nanocomposites: Influence of the polymer‐filler interfacial interactions

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