Can you use number of amine ends to determine if linear or branching polymerization has taken place?

If I have two polymer samples, both of the same formulation and relative viscosity, but one sample has a much higher amine end number than the other, can I assume that the sample with higher amine...

03 April 2018 715 3 View

Can charge reversal occur when PA66 fibers have frictional contact with an attenuating device opening?

I'm looking at potential differences in static generation for PA66 fibers as they are attenuated. I've attached a file containing drawings of fibers being guided into an attenuator. The fibers in...

10 November 2017 2,324 0 View

Will an increase in initial moisture content allow a higher degree of polymerization to take place if the moisture is flashed off in nylon 6/6?

Consider nylon 6/6 pellets going from solid to melt in an extruder. My thoughts are that if you increase moisture content before they are melted, you can increase the monomer units that can...

07 August 2017 8,699 5 View

Is there a method to limit hygroscopicity of nylon 6,6?

04 May 2017 4,087 5 View

What happens when anhydrous HCL gas reacts with moisture on stainless steel surface?

Took out a steam sparger and noticed a small section that had residue on the top of it. I believe it may be caused by a reaction with HCL and moisture creating water and a metal chloride. It felt...

11 December 2015 2,672 3 View

Will increasing shear, reducing pressure drop in a spin pack for a Power Law fluid reduce fiber swelling and decrease draw resonance?

Polymer in question is Nylon 6,6. Looking to understand flow through spin pack and how changes in the design will affect fiber spinning.

08 September 2015 3,985 2 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View