Why are triblock copolymers more hydrophilic than diblock copolymers?

We observed that a triblock copolymer (PEG12-PCL24-PEG12) is more hydrophilic than diblock (PEG12-PCL12). Micelles prepared from the diblock copolymers were less stable and aggregated much faster.

05 June 2014 8,055 5 View

How can we differentiate a nanostructre formed from an amphiphilic block copolymer is micelle or nanoparticle?

We have synthesized amphiphilic block copolymer of polyethylene glycol and polycaprolactone. Tem study shows that structures formed are spherical in shape. DLS study shows that its size is in...

10 November 2013 3,605 6 View

Does polycaprolactone affect protein secondary structure determination?

Polycaprolactone is present in the solution containing a protein. Will it affect the secondary structure determination using CD spectrum? Protein dissolved in a solution containing polyethylene...

06 July 2012 1,151 5 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Will an electromagnet core be as efficient if it is made of several pieces?

If you had a design for an electromagnet core that required it to be assembled out of several parts would it still produce as strong a magnetic field as the same core but made out of a single...

17 January 2021 5,821 3 View

What are the factors (molecular/crystalline structure related) that affect refractive index of ceramics, glasses and polymers? How?

Wavelength of light is an obvious factor, but this is not my point of question Some specific questions are What can be molecular/atomic level mechanism behind temperature and density dependence of...

11 October 2020 301 8 View

Iron powder core made not improving magnetic field strength ?

I made an iron powder core of the following specifications: Radius : 65mm Length : 10mm Mass of iron used : 10% mass fraction (20g) Total mass : 200g Binder : Slow cure epoxy I noticed that...

27 September 2020 2,233 4 View

Modelling an electromagnet and a piece of materiel?

if there is somebody who can help me with modeling an electromagnet 12V Dc and a piece of material placed on the electromagnet core to study the effect of current flux on the mechanical properties...

10 September 2020 2,019 2 View

What are the best references for experiences on the implementation of simulation software in undergraduate teaching?

I am looking for benchmarks in educational studies that investigated the benefits, obstacles and disadvantages regarding the use of simulation software to support teaching at undergraduate level....

24 August 2020 6,968 9 View

Which is the best material for an electromagnet core?

I need to build a continuous electromagnet, B=1-2 T, narrow hysteresis loop, good linearity (to have the flux density easily adjustable). Application - MeV electron beam deflection. I'll be...

27 April 2020 4,345 2 View

What are the experimental methods to measure magnetic field, B of a novel electromagnet?

I am following the below method so far & need guidance to further modify it: 1) Making a specimen 2) Making an Electromagnet using prepared specimen 3) Using DC & AC Source to find BH-...

06 April 2020 3,779 5 View

How to calculate the current (in amperes) flowing through a volume, when a current density is applied on the volume ?

Hello, I would like to know how to deduce the amount of current flowing through a solid volume , when current is applied in the form of current density 'J' (A/m2). Example: As shown in the image...

21 October 2019 8,306 6 View

Literature resources in computational electromagnetism based on Maxwell's equations and application of FEM for high frequency applications?

Hello everyone, I am searching for references in numerical modelling of fully-coupled electromagnetism with FEM for high frequency applications? I am particularly focussed on induction heating of...

09 October 2019 6,644 3 View