TEM characterization of diblock copolymer templated iron oxide nanoparticles: Bulk solution and thin film surface doping approach

Polymer ◽  
2006 ◽  
Vol 47 (6) ◽  
pp. 2018-2022 ◽  
Author(s):  
Pinar Akcora ◽  
Robert M. Briber ◽  
Peter Kofinas
Keyword(s):  
Thin Film ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Diblock Copolymer ◽  
Film Surface ◽  
Bulk Solution ◽  
Oxide Nanoparticles ◽  
Thin Film Surface ◽  
Tem Characterization

Thermal, Mechanical and Magneto-Mechanical Characterization of Liquid Crystalline Elastomers Loaded with Iron Oxide Nanoparticles

2015 ◽  
Vol 1718 ◽  
pp. 3-7
Author(s):  
Stephany Herrera-Posada ◽  
Barbara O. Calcagno ◽  
Aldo Acevedo
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Liquid Crystalline ◽  
Molar Mass ◽  
Oxide Nanoparticles ◽  
Magnetic Actuation ◽  
Scanning Calorimetry ◽  
Elastomeric Matrix ◽  
Alternating Magnetic Fields

ABSTRACTLiquid crystalline elastomers (LCEs) are materials that reveal unusual mechanical, optical and thermal properties due to their molecular orientability characteristic of low molar mass liquid crystals while maintaining the mechanical elasticity distinctive of rubbers. As such, they are considered smart shape-changing responsive systems. In this work, we report on the preparation of magnetic sensitized nematic LCEs using iron oxide nanoparticles with loadings of up to 0.7 wt%. The resultant thermal and mechanical properties were characterized by differential scanning calorimetry, expansion/contraction experiments and extensional tests. The magnetic actuation ability was also evaluated for the neat elastomer and the composite with 0.5 wt% magnetic content, finding reversible contractions of up to 23% with the application of alternating magnetic fields (AMFs) of up to 48 kA/m at 300 kHz. Thus, we were able to demonstrate that the inclusion of magnetic nanoparticles yields LCEs with adjustable properties that can be tailored by changing the amount of particles embedded in the elastomeric matrix, which can be suitable for applications in actuation, sensing, or as smart substrates.

Thermoresponsive hybrid double-crosslinked networks using magnetic iron oxide nanoparticles as crossing points

2018 ◽  
Vol 9 (37) ◽  
pp. 4642-4650 ◽  
Author(s):  
Thomas Blin ◽  
Antoine Niederberger ◽  
Lazhar Benyahia ◽  
Jérôme Fresnais ◽  
Véronique Montembault ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Alder Reaction ◽  
Diels Alder ◽  
Oxide Nanoparticles ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Diels Alder Reaction ◽  
Crosslinked Networks ◽  
Stimuli Sensitive

Preparation and characterization of stimuli-sensitive hybrid double-crosslinked hydrogels based on iron oxide nanoparticles as the nano-crosslinkers and a difuran-functionalized PEO as the diene partner for the thermoreversible Diels–Alder reaction.

Synthesis and characterization of stable aqueous dispersion of functionalized double-coated iron oxide nanoparticles

2015 ◽  
Vol 160 ◽  
pp. 522-525 ◽  
Author(s):  
Simone F. Medeiros ◽  
João O.C. Filizzola ◽  
Victor F.M. Fonseca ◽  
Paulo F.M. Oliveira ◽  
Taline M. Silva ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Aqueous Dispersion ◽  
Synthesis And Characterization ◽  
Oxide Nanoparticles

Characterization of Oleic-acid-coated Iron-oxide Nanoparticles Synthesized by Using a Coprecipitation Method

2014 ◽  
Vol 64 (3) ◽  
pp. 344-348
Author(s):  
Yousaf IQBAL ◽  
Ilsu RHEE ◽  
Hongsub BAE ◽  
Junghyun BYUN ◽  
Taeyoung JUNG ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Coprecipitation Method ◽  
Oxide Nanoparticles
Sign in / Sign up

Export Citation Format

Share Document