What is different between chitosan and alginate?

Can anyone tell me why lysozyme could enzymatically degrade chitosan while alginate is stable under same conditions?

01 February 2015 2,405 13 View

Which method is the best for synthesis of small or macromonomer polyesters?

As you know, there are different procedures for synthesis of ester chemical bonds. I can't find an appropriate report regarding what method is the best. Could anyone help me about that? Which...

04 May 2014 9,119 3 View

Which polyol is best?

There are different polyols for fabrication of biodegradable scaffolds. What parameters are important for selection of a specific polyol? Which polyol is the best candidate for both in vitro and...

04 May 2014 7,522 5 View

Can anyone help me with the possible conformations of polyurethane when its FTIR absorbance decrease from 1730 to 1695 cm-1?

Polyurethane conformations

31 December 2013 3,347 7 View

Is it possible to dissolve the lignosulfonate in an organic solvent?

Lignosulfonate is an insoluble biopolymer in the organic solvents. How we can dissolve this polymer in an organic solvent?

06 July 2013 8,896 3 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

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

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

No title

I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

Cloudy/high background western blot - can anyone help me?

Hi everyone! I try to detect VDR protein (~48 kDa) using Western Blot. After SDS-PAGE using 10% MP TGX Stain-Free Gel from BioRad I transferred the protein onto an metOH activated PVDF membrane...

23 February 2021 6,266 3 View

Alginate and silk fibroin hydrogels toxic to cells?

Hello, I asm currently working with alginate and silk fibroin hydrogels. I prepared a blend of alginate and aqueous silk fibroin (straight from dialysis) and resorted to ionic crosslinking to...

23 February 2021 8,249 2 View

Protocol for membrane extraction E. coli?

Hello! I am interested in determining whether a poly-unsaturated fatty acid I have engineered E. coli to produce is being incorporated into the membrane of the cells or if it is simply a free...

21 February 2021 7,447 2 View

Onset of Photo Oxidation in Polymers?

Hi! I am looking for some specific information in regards to the minimum amount of UV intensity required to begin the photo degradation process in polymers. I understand each polymer is...

15 February 2021 7,703 4 View