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Questions related from Catherine Esnaashari
Assuming that there may exist some decomposition products of chloroform ( stabilized with 0.75 wt% ethanol ) such as HCl, diethyl carbonate, ... what reactions can happen between calcium carbonate...
04 April 2018 8,379 13 View
Do calcium ions act as a transesterification catalyst or depolymerization catalyst for PET in PET/PC blend system?
03 March 2018 9,776 1 View
I am using a two probe method to measure the resistance of my graphene nanocomposites. I have observed that at concentrations around 1wt% the resistance does not depend on the area of the sample!...
01 January 2018 3,374 6 View
I want to add fluffy graphene directly to microcompounder but it takes a long time and also part of it goes to the air. I do not want to use any solvents to premix it with my polymer. What are...
09 September 2017 2,487 2 View
In a paper, NMP has been used as a solvent for PET, but in Eastman website it has been mentioned that PET is insoluble in NMP! Can PETG (polyethylene terephthalate glycol modified) be dissolved...
04 April 2017 6,501 4 View
what reaction conditions (pH, solvents, temperature, ...) do you recommend to prevent reaction of epoxide ring with nanocellulose hydroxyl groups and preserve epoxy fuctional groups during...
09 September 2016 4,579 3 View
If a polymer is functionalized less than 1 wt%, can characteristic absorptions of the functional group grafted to the polymer be distinguished from noise contributions in the spectrum? What is...
04 April 2016 6,750 16 View
Read 12 answers by scientists with 12 recommendations from their colleagues to the question asked by Catherine Esnaashari on Feb 20, 2016
02 February 2016 3,626 13 View
I am working with a PLA with unknown trade name. Is it possible that the PLA contains chain extenders( I mean its Mw has been increased by some kind of chain extenders, so they continue to react...
02 February 2016 7,552 9 View
Attached is the picture of a PA6 hot pressed sheet. These white spots are observed when Akulon F223D PA6 granules (unprocessed) are hot pressed into a sheet. They don't appear in the case of K125...
12 December 2015 7,183 3 View
I am preparing cellulose nanocrystals by acid hydrolysis. After centrifugation step, I put the dispersion in dialysis bag until constant pH. In order to use shorter length of dialysis bag (they...
06 June 2015 282 4 View
In order to remove free acid and raise pH After acid hydrolysis of MCC with H2SO4, I centrifuged the samples at 10000 rpm (about 17000 g) and then I observed a layer of brown material at the...
04 April 2015 8,131 6 View
In some papers, the acid is removed by repeated centrifuge until the supernatant is turbid, then the supernatant is collected and dialyzed to obtain CNWs. While in other papers, the supernatant...
04 April 2015 6,357 3 View
I am trying to determine degree of polymerization of MCC by measuring its intrinsic viscosity, so MCC must be placed in a solution. Cupriethylenediamine hydroxide solution (cuene) has been used in...
01 January 2015 4,613 5 View
Do PLA and PA6 have a common solvent? If yes, then why are their blends always (at least to my best knowledge ) prepared by melt blending?
11 November 2014 2,895 8 View
Is grafting from approach at all possible? What is the limit of the molecular weight in grafting onto approach?
11 November 2014 7,767 8 View
it seems that all models used in articles end up in palierne model with a lot of simplifying assumptions. how to characterize interface in polymer blend nanocomposites if nanofiller (rod-like)...
11 November 2014 7,074 7 View
