⚗ Polymers Forum

Solvent casting polyethersulfone (PES)

I've been using polymethyl methacrylate (PMMA) as a support layer for some germanium shadow mask lithography, but its g...

7 comments posted 21yrs

posted by pcdhSpamMeSenseless

7 comments posted 21yrs posted by pcdhSpamMeSenseless

connection between the hardness and other physicomechanical characteristics of plastics

Dear sirs, I have two questions: is there a connection between the hardness and other physicomechanical characteristics...

2 comments posted 21yrs

posted by aleks.p.k

2 comments posted 21yrs posted by aleks.p.k

Brittle nature of PEBAX?

I am hoping someone can shed some light on a problem I am facing. I am seeing brittle failure of a Polyether block Amid...

1 comments posted 21yrs

posted by SkyPhish

1 comments posted 21yrs posted by SkyPhish

pH sensitive hydrogel

I need a biocompatible hydrogel with pH sensitivity, which can be uniformly coated to the metal (copper or any other)....

0 comments posted 21yrs

posted by sumit.suhag

0 comments posted 21yrs posted by sumit.suhag

sheet plastics for thermoforming

I've been vacuum molding this tray (at home on a thermoformer i made) out of .030 hips. When the plastic cools, it is q...

5 comments posted 21yrs

posted by flxcpy

5 comments posted 21yrs posted by flxcpy

Alq3 solvent

Does anyone know which solvents are able to dissolve Alq3 other than chloroform ? I'm looking for something that has a...

0 comments posted 21yrs

posted by renbin

0 comments posted 21yrs posted by renbin

Sorry I should have done more looking.

In my recent post requesting help with info on PVC and PE, I asked if there was an adhesive for PE. After looking on th...

1 comments posted 21yrs

posted by t.k.j

1 comments posted 21yrs posted by t.k.j

question re PVC/Polyethelene

Hi all, Could some of you knowledgable folks please help me out? I am not a poymer chemist, or even a chemist at all, b...

4 comments posted 21yrs

posted by t.k.j

4 comments posted 21yrs posted by t.k.j

Flory-Huggin's Theory

I've got a problem here which I am supposed to solve but I am not able to get a mathematical answer to, I hope to be ab...

2 comments posted 21yrs

posted by zerty81

2 comments posted 21yrs posted by zerty81

In search for a material

Hi list, I'm in need for your informed and knowledgeable advise. I would like to know what would be the closest thing t...

0 comments posted 21yrs

posted by jkprorelations

0 comments posted 21yrs posted by jkprorelations

CAS#

Hi, I have some "Alkyl Phenol Ethoxylate". The CAS# I have for it is 9016-45-9. Does this information seem correct? How...

4 comments posted 21yrs

posted by dave1198

4 comments posted 21yrs posted by dave1198

Industrial solid polymer obtention

Can someone help me???? My company produces sodium polyacrylate in water solution. Now, we are interested in obtaining...

1 comments posted 21yrs

posted by sconejos

1 comments posted 21yrs posted by sconejos

Average Degree of Polymerisation

Can someone please help me! I'm having real trouble with Carother's equation and calculating the average degree of poly...

1 comments posted 21yrs

posted by mannudada

1 comments posted 21yrs posted by mannudada

need help with chitosan question

Hi I'm looking for a microsphere about 1 to 10 um. The surface must be net positive charged. It does not matter what is...

1 comments posted 21yrs

posted by vinceman

1 comments posted 21yrs posted by vinceman

Stainless Steel Reactor

I'm looking for a small jacketed unit that would be 100 gallons or less. I need to have stirring and a full vacuum capa...

2 comments posted 21yrs

posted by maze87

2 comments posted 21yrs posted by maze87