Can you name some monomers which can expand thermally after polymerization?

More Md. Arifur Rahman's questions See All

How does one calculate the molecular weight of entanglements of an ultra high molecular weight glassy polymer?

Some viscoelastic analysis indicated that the ultra high molecular weight PVAc homo polymer may contains physical cross linking due to the entanglements. How can i calculate the mol wt of the...

07 August 2014 6,928 6 View

Is there any model to study the thermal conductivity/heat conduction in multilayer foam/film systems?

Currently, I am working with a system that is basically assemblies of alternating solid and porous polymeric layers (figure is attached). I am interested to study the thermal conductivity of such...

01 February 2014 10,102 3 View

How to measure the total reflection of a film?

Currently, I am looking for a way to measure the total reflection of a reflective film. I am using an UV instrument equipped with a reflection mode and it measures the absolute reflection of the...

08 September 2013 5,350 5 View

Can anyone give an example of a natural material which is porous but transparent? Or has a layered porous structure?

I am looking for the example of a natural material that has a multilayered porous structure and is optically transparent.

04 May 2013 1,667 19 View

Is reversible hydrogen bonding possible in epoxidized natural rubber (ENR)?

ENR posses high polar group contents possibly due to the random epoxidation of polyisoprene backbones. Partial ring opening of epoxide group can contribute to OH group formation and thus able to...

10 November 2012 9,686 2 View

What is the chemical/structural origin of stickiness in Epoxidized natural rubber?

Inspite of having higher Tg, Epoxidized natural rubber (with 25 and 50 mol% epoxidation level) exhibit higher stickiness than the synthetic polyisoprene (cis). Why?

08 September 2012 9,816 2 View

Adhesion strength of coating?

How can I determine a good adhesion strength range for coatings on polymer surfaces, such as DLC on polymer substrates? Is there a specific threshold for adhesion strength (from T-peel tests)...

10 August 2024 942 3 View

How to increase simulation box size?

We intend to study the interaction between peptides and polymer (like PP, PE and PS) through MD simulations using Martini force fields ( Martini 2 for PP and Martini 3 for PE, PS). We have...

08 August 2024 4,842 0 View

Why does my protein refolded to beta sheet during thermal denaturation analysis?

Hi! So i attempted to understand a novel protein behavior towards heat application by analyzing its secondary structure change. I subjected the protein to a thermal denaturation analysis using...

06 August 2024 1,989 3 View

How to heat polymer for about 130° without oil bath ?

is there any other way to heat a polymer evenly other than oil bath if so what are those and how to use it

06 August 2024 947 1 View

What is the ionic radius of Hydrogen anion? And how to know the exact ionic radii of the elements?

I'm trying to calculate the tolerance factors of the hydride perovskite and the value calculated by me and the reported values are contradictory. Need more clarity in using the correct ionic radii...

01 August 2024 2,614 1 View

What are the steps of formulating a herbal extract into a sheep/goat drench?

I am working on natural remedies for de-worming in small ruminant livestocks. Part of my project involves formulation of drench-type product, which I have not much experience in. My experience is...

30 July 2024 9,806 1 View

How to explain the different interaction between soluble and insoluble polymer in water?

Hello everyone, I am try to understand the differences interaction between insoluble and soluble polymers in water with metal ions and how theit charge density (of metal ions) affect the interaction.

29 July 2024 6,350 3 View

Why is it not common to see similar pairs in polymer sliding pairs?

If the pairs are similar, will it reduce the adhesion due to electric charges?

29 July 2024 3,185 2 View

HAs anyone used TGA to find activation enegy of water evaporation?

I have different polymer solutions and I hypothesize that water molecules are retained based on the water-polymer interactions, so the amount of free water is less to intercat with drug tablet....

28 July 2024 9,545 6 View

Expansion thermal of muscle ?

What is the thermal expansion coefficient of human muscle?

27 July 2024 7,190 0 View