Surface Modification of Hollow Glass Microspheres

Mutua, Fredrick Nzioka; Lin, Peijie; Koech, Jacob Kiptanui; Wang, Yimin

doi:10.4236/msa.2012.312125

Cited by 26 publications

(19 citation statements)

References 17 publications

(17 reference statements)

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“…Proteinimmobilization to particle surfaces, has been routinely used for immunoassay and other biological analyses. 3,14 Moreover, BSA often used to complete the modification or conjugation reaction for Dynabead by dissolving and adding them in the blocking buffer, as in the vendor's manual, in order to remove any residual tosyl groups which possibly remain after the reaction with target substrates (such as aDEX or mPEG, in this case) because BSA has amine groups from amino acid chains and it is not harmful to cells. However, it may affect partitioning in ATPS because it is hydrophilic, indeed.…”

Section: Ir Spectral Investigation Of Bovine Serum Albumin (Bsa) Modimentioning

confidence: 99%

“…Various polymerimmobilizations to particle surfaces, have been reported in order to achieve biological goals. 3,[11][12][13][14][15][16][17] The advantage of attaching amino-dextran to micro/nanoparticles for ATPS is to give the target particles more affinity to dextran-rich phase, which is located at the bottom of two layers (The top layer of ATPS, PEG-rich phase is more hydrophobic. Also the bottom layer, DEX-rich phase is more hydrophilic and dense).…”

Section: Ir Spectral Investigation Of Amino-dextran (Adex) Modified Mmentioning

confidence: 99%

“…6,7 Wide and various applications on IR spectroscopy cover even the confirmation of bacterial attachment and changes on particles 3,8,9 and IR spectroscopy is still considered as one of the most widely used and reliable methods for chemical changes at the surface of materials. 3,6,7,[10][11][12][13][14][15]17,18 Here the infrared (IR) microscopic investigation results to prove the surface modification of polystyrene (PS)-coated magnetic microparticles, are reported. .…”

Section: Introductionmentioning

confidence: 99%

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Investigation of chemical modification on tosyl-activated polystyrene microsphere magnetic particle surface by infrared microscopy

Byun¹

2016

Analytical Science and Technology

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Abstract:The chemical engrafting of polymers on particle surface, plays an important role on selective partitioning of micro/nano-particles in the separated layers of liquid media, such as aqueous two phase systems (ATPSs). Three polymers, dextran, poly (ethylene glycol) and albumin were chosen and chemically conjugated to the polystyrene (PS) magnetic microparticle surface. The attachment of long-chained polymer chains which may switch the partition behavior, can be simply performed by S N 2 substitution of various polymers having primary amine functional groups, with p-toluenesulfonyl (tosyl)-activated polystyrene magnetic micro-particles. The surface modification of microparticle was probed by infrared microscopy. The distinctive peak represents N-H stretching vibration mode for microparticles after the reaction and it is common for all three polymers examined. The locations of main peaks are similar for all micro-particles but different and distinguishable in fingerprint region.

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Section: Ir Spectral Investigation Of Bovine Serum Albumin (Bsa) Modimentioning

confidence: 99%

Section: Ir Spectral Investigation Of Amino-dextran (Adex) Modified Mmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of chemical modification on tosyl-activated polystyrene microsphere magnetic particle surface by infrared microscopy

Byun¹

2016

Analytical Science and Technology

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“…Por estas interações (pontes de hidrogênio e van der Waals) serem fracas, nenhuma delas é visível por espectroscopia na região do infravermelho. 42,43 Constantes termodinâmicas da sorção de CO 2…”

Section: (9)unclassified

Sorção De Co2 Utilizando Líquido Iônico Aditivado Com Extensores De Área Superficial

Souza¹,

Vieira²,

Polesso³

et al. 2018

Quim. Nova

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CO 2 SORPTION USING IONIC LIQUID ADDITIVATED WITH SURFACE AREA EXTENDERS. The study of environmentally friendly CO 2 sorption agents are growing due to the need of mitigate this gas from atmosphere. Ionic Liquids (ILs) present the advantage of having low vapor pressures and being chemically and thermally stable. Besides, their properties can be designed by varying the groups of the cation or anion. Yet, these compounds present a lower desorption energy when compared to amines based chemical solvents. These characteristics make ILs potentially important for the development of new processes focused on the mitigation of global warming. However, ILs have high viscosity and high cost, making them economically unfeasible. To minimize these problems, bubble glass can be used as an additive in ionic liquids to reduce cost and viscosity. Bubble glass has several applications in industry, presenting low cost and high chemical and mechanical resistance. This work evaluated the CO 2 solubility in [bmim][BF 4 ] and [mbmim][Tf 2 N] pure and mixed with boron silicate bubble glass in volumetric concentrations of 5% to 50%. Data are reported at 27 bar of pressure and temperatures of 303 and 323 K. Mixed systems with 50% concentration of bubble glass showed the best sorption results for both ionic liquids.

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“…37 In another work hydrochloric acid, piranha solution (that is, 3:1 concentrated H 2 SO 4 :H 2 O 2 ), and NaOH were used for attaching hydroxyl groups on HGMs surface. 38 Here, the adhesion between the polyolefin matrix and the glass particles was enhanced (a) by modifying the HGMs surface with dodecyl(triethoxy)silane (DDTES) before the embedding in the PE matrix or (b) by adding a suitable coupling agent, namely a PE grafted with maleic anhydride (PE-g-MA) during composite preparation by melt blending.…”

Section: Introductionmentioning

confidence: 99%

Lightweight polyethylene‐hollow glass microspheres composites for rotational molding technology

Stagnaro¹,

Utzeri²,

Vignali

et al. 2020

J of Applied Polymer Sci

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Innovative composites based on polyethylene (PE) filled with hollow glass microspheres (HGMs) were formulated and successfully prepared as suitable plastic materials for rotational molding technology. The HGMs here used allow to attain lightweight materials with a reduced resin content and appealing aesthetical qualities. To enhance filler dispersion and phase adhesion, thus improving the ultimate properties of the composite materials, two compatibilization strategies were adopted: namely, surface modification of HGMs by dodecyl(triethoxy)silane or addition during mixing of a maleinized PE as insitu coupling agent. The effectiveness of the surface treatments on HGMs was assessed by attenuated total reflectance Fourier-transform infrared spectroscopy and thermogravimetric analysis investigations. PE-based composites at various HGMs contents (5, 10, and 20 wt%) were prepared by melt blending. Morphology of untreated and modified HGMs, their dispersion in the composites as well as filler/matrix adhesion were investigated by SEM microscopy. Thermal, rheological and mechanical properties of the composites were studied in comparison with neat PE. Rotational molding tests carried out both in laboratory and industrial site demonstrated the feasibility of producing lightweight plastic items (weight reduction up to 17%) of excellent aesthetics on a large scale.

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Surface Modification of Hollow Glass Microspheres

Cited by 26 publications

References 17 publications

Investigation of chemical modification on tosyl-activated polystyrene microsphere magnetic particle surface by infrared microscopy

Investigation of chemical modification on tosyl-activated polystyrene microsphere magnetic particle surface by infrared microscopy

Sorção De Co2 Utilizando Líquido Iônico Aditivado Com Extensores De Área Superficial

Lightweight polyethylene‐hollow glass microspheres composites for rotational molding technology

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