How to determine Mark-Houwink-Sakurada parameters, K and a, for copolymer?

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Is there any effect of filler addition on crosslink density of composite materials?

Now I am doing reseach on silicone rubber composites to improve its mechanical properties and thermal stability using boron nitride filler. I only have one reference that states there is an effect...

11 December 2018 6,560 7 View

How to remove bubbles from silicone rubber thermoforming process?

I develop silicone rubber composite using MQ resin as a filler. I used thermoforming process to make a pad. Before I blend silicone rubber with MQ, I dissolved MQ with toluent with ratio of...

08 September 2018 5,354 0 View

Smooth surface or fracture surface?

I want to use SEM for morphology analysis of composite material (silicone rubber with inorganic powder), I want to see filler distribution in matrix, I do not know which one is better to get a...

02 March 2018 2,184 0 View

Does anyone know the electrical properties of acrylic-based monomers?

I'm doing a research about an insulating material and want to use acrylic-based monomers, but I only know some monomers like methyl methacrylate and butyl acrylate. And I don't know what kind of...

04 May 2017 3,016 0 View

Is it possible to make solvent-free acrylic hot melt pressure-sensitive adhesive with UV-curable methods?

I read some articles about how to synthesise solvent-free acrylic hot melt pressure-sensitive adhesive with UV-curable methods (photopolymerization), but all of them mention that to make a...

02 March 2017 2,053 2 View

How to determine the polarity of copolymer?

I have synthesized poly(methyl metacrylate-co-styrene) for denture base material, then test it with water absorbtion-solubility test. On reference journal, explained that the solubility depends on...

05 June 2016 2,095 6 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

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View