Interaction of Dendrimer-Based Polymer with Sodium Dodecyl Benzenesulfonate: Characterization and Effect on Properties of Composites

An aptasensor was developed on an interdigitated microelectrode (IDME) by current-volt sensing for the diagnosis of ulcerative colitis by detecting the biomarker lipocalin-2. Higher immobilization of the anti-lipocalin-2 aptamer as a probe was achieved by using sodium dodecyl benzenesulfonate-aided zeolite particles. FESEM and FETEM observations revealed that the size of the zeolite particles was <200 nm, and they displayed a uniform distribution and spherical shape. XPS analysis attested the occurrence of Si, Al, and O groups on the zeolite particles. Zeolite particles were immobilized on IDME by a (3-aminopropyl)-trimethoxysilane amine linker, and then, the aptamer as the probe was tethered on the zeolite particles through a biotin-streptavidin strategy assisted by a bifunctional aldehyde linker. Due to the high occupancy of the aptamer and the efficient electric transfer from zeolite particles, higher changes in current can be observed upon interaction of the aptamer with lipocalin-2. The lower detection of lipocalin-2 was noted as 10 pg/mL, with a linear range from 10 pg/mL to 1 μg/mL and a linear regression equation of y=8E−07x+8E−08; R2 = 0.991. Control experiments with complementary aptamer and matrix metalloproteinase-9 indicate the specific detection of lipocalin-2. Furthermore, spiking lipocalin-2 in human serum does not interfere with the identification.

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The effect of inorganic salts on the viscosity behavior of sodium dodecyl benzenesulfonate solution with high concentration

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/0927-7757(93)80492-w ◽

1993 ◽

Vol 70 (1) ◽

pp. 15-21 ◽

Cited By ~ 9

Author(s):

Jinghe Wang

Keyword(s):

Sodium Dodecyl ◽

Inorganic Salts ◽

High Concentration ◽

Viscosity Behavior ◽

Sodium Dodecyl Benzenesulfonate

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Different conformational states of hen egg white lysozyme formed by exposure to the surfactant of sodium dodecyl benzenesulfonate

International Journal of Biological Macromolecules ◽

10.1016/j.ijbiomac.2019.01.097 ◽

2019 ◽

Vol 128 ◽

pp. 54-60 ◽

Cited By ~ 11

Author(s):

Javed Masood Khan ◽

Ajamaluddin Malik ◽

Priyankar Sen ◽

Anwar Ahmed ◽

Mukhtar Ahmed ◽

...

Keyword(s):

Sodium Dodecyl ◽

Egg White ◽

Hen Egg White Lysozyme ◽

Conformational States ◽

Egg White Lysozyme ◽

Sodium Dodecyl Benzenesulfonate ◽

Hen Egg White ◽

Hen Egg

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Surface Treatment of Carbon Nanotubes Using Modified Tapioca Starch for Improved Force Detection Consistency in Smart Cementitious Materials

Sensors ◽

10.3390/s20143985 ◽

2020 ◽

Vol 20 (14) ◽

pp. 3985

Author(s):

Leonard Chia ◽

Gina Blazanin ◽

Ying Huang ◽

Umma Salma Rashid ◽

Pan Lu ◽

...

Keyword(s):

Carbon Nanotubes ◽

Sodium Dodecyl ◽

Cementitious Materials ◽

Detection Sensitivity ◽

Force Detection ◽

Tapioca Starch ◽

Sodium Dodecyl Benzenesulfonate ◽

Coating Method ◽

Mixing Method ◽

Modified Tapioca Starch

The remarkable mechanical properties and piezo-responses of carbon nanotubes (CNT) makes this group of nanomaterials an ideal candidate for use in smart cementitious materials to monitor forces and the corresponding structural health conditions of civil structures. However, the inconsistency in measurements is the major challenge of CNT-enabled smart cementitious materials to be widely applied for force detection. In this study, the modified tapioca starch co-polymer is introduced to surface treat the CNTs for a better dispersion of CNTs; thus, to reduce the inconsistency of force measurements of the CNTs modified smart cementitious materials. Cement mortar with bare (unmodified) CNTs (direct mixing method) and surfactant surface treated CNTs using sodium dodecyl benzenesulfonate (NaDDBS) were used as the control. The experimental results showed that when compared with samples made from bare CNTs, the samples made by modified tapioca starch co-polymer coated CNTs (CCNTs) showed higher dynamic load induced piezo-responses with significantly improved consistency and less hysteresis in the cementitious materials. When compared with the samples prepared with the surfactant method, the samples made by the developed CCNTs showed slightly increased force detection sensitivity with significantly improved consistency in piezo-response and only minor hysteresis, indicating enhanced dispersion effectiveness. The new CNT surface coating method can be scaled up easily to cater the potential industry needs for future wide application of smart cementitious materials.

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