What other factors can affect failure of hydrogels to form?

03 April 2015 3,975 4 View

Are you familiar with a freeze thaw method to make hydrogels?

I am currently employing the freeze thaw method to synthesize 10% w/v polvinyl alcohol. However, I cannot get the solution to gel. It becomes a sticky paste instead. I am only using a refrigerator...

02 March 2015 1,854 8 View

Does anyone have experience with hydrogel synthesis using liquid nitrogen?

Would synthesis of polyvinyl alcohol hydrogels be achieved using flash freezing with liquid nitrogen? (freeze-thaw method)

02 March 2015 2,634 2 View

Can sebacic acid, lactic acid and acetic anhydride be used as a crosslinker?

I am currently doing a study on poly vinyl alcohol - silica (from rice husk) hydrogels. Unfortunately, I cannot use glutaraldehyde as a crosslinker since it has been banned. In connection to this,...

10 November 2014 1,982 4 View

What is the method of synthesis of polyvinyl alcohol hydrogels with and without fillers/copolymers?

I am currently doing a research on synthesis and characterization of PVA-cellulose and PVA-rice husk ash hydrogels. Can anybody give me an idea on the methodology for synthesis? Thank you. Any...

07 August 2014 7,409 4 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

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

can I treat waste water containing solvents and alcohol with electrocoagulation?

there are solvents and alcohol in the waste water of a factory that produces disinfectants. Increasing this waste water requires very serious operations. Can I treat this waste water with...

27 February 2021 2,609 3 View

What could be reason for getting such type of graph for complex impedance in case of polymer blend films?

Its effect appears in real part of ac conductivity also. Can anyone suggest any reason behind it?

26 February 2021 3,487 3 View

How to prepare a thin polymer film by post-polymerization/crosslinking?

24 February 2021 2,362 5 View

How to do a surface treatment of uncoated TiO2 with polymer?

Basically, I would like to know how to treat or coat on the uncoated bare TiO2 (Ti-OH rich) surface with polymer which has anchoring groups in the polymer structure like trimethoxygroups. What is...

21 February 2021 4,657 6 View