The absolute heat capacity of polymer grafted nanoparticles using fast scanning calorimetry*

Measurement of Heat Capacity by Differential Scanning Calorimetry

The methods of measuring the heat capacity of materials by differential scanning calorimetry (DSC) are presented and discussed. The principles of temperature modulated DSC are outlined and the possibilities and limits of the method are discussed.

Assembly of Nanoparticles using Surface-Grafted Orthogonal Polymer Gradients

Polymer-coated surfaces are routinely used in industrially important applications including prevention of biofouling (in fabrication of protein-resistant surfaces), improving stability of colloidal dispersions, surface lubrication, or enhancing wettability and adhesion. Polymer chains chemically bound to the surface represent a special class of polymer coatings that has gained considerable atte...

Environmentally Friendly Synthesis of Polymer-Grafted Nanoparticles

Practical approach for measuring heat capacity of pharmaceutical crystals/glasses by modulated-temperature differential scanning calorimetry.

A practical protocol to obtain accurate heat capacity values of pharmaceutical compounds using modulated-temperature differential scanning calorimetry was established. Three pharmaceutical compounds, acetaminophen, indomethacin, and tri-O-methyl-β-cyclodextrin were used as model compounds. Powder samples did not produce reproducible results, presumably due to inclusion of gas in gap of powders ...

Modeling the anisotropic self-assembly of spherical polymer-grafted nanoparticles.

Recent experimental results demonstrated that polymer grafted nanoparticles in solvents display self-assembly behavior similar to the microphase separation of block copolymers and other amphiphiles. We present a mean-field theory and complementary computer simulations to shed light on the parametric underpinnings of the experimental observations. Our theory suggests that such self-assembled str...