Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules... | Contact experts in Polymers to get answers
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Questions related to Polymers
I'm completing an Aspen simulation of a fixed bed reactor for biomass pyrolysis for my Master's Dissertation. Im currently using an RYield reactor to break it into its constituent elements (CHNOS)...
08 October 2019 5,814 2 View
For my thesis research, I dissolved PLA and PCL in chloroform: methanol (3:1), PMMA (350.000 MW, 13 wt%) in acetone, and collagen in acetate acid--and then, I mixed them together. The problem is...
07 October 2019 8,391 4 View
Hello. I want to crosslink using natural or synthetic polymers. I need an elastic and highly biocompatible polymer.
07 October 2019 1,533 2 View
Dear colleagues, I need to determine the crosslink density of thermosetting cyanate ester resin. Among the methods, which are presented in the literature, I chose the solvent-swelling method. For...
02 October 2019 7,477 1 View
I want to sputter Au and Ag on a Polymer and looking for a material (preferably transparent) the films adhere to it best.
27 September 2019 3,707 3 View
How can I attach an amine group (-NH2) to a carboxyl group (-COOH)? What are the experimental conditions, such as temperature, atmosphere, pH etc? I want to attach mPEG-NH2 to α-Lipoic acid in...
21 September 2019 5,346 5 View
How to determine interfacial energy of polymers by contact angle from a goniometer? How polar and dispersive part of interfacial energy is obtained?
18 September 2019 3,659 3 View
Can you share any relevant atricles? Can you share the curremnt knowledge in this? Any application examples other than gels / membranes? Thank you
12 September 2019 4,008 1 View
I synthesized a silica-functionalized graphene through esterification. I found an ester peak(~1735 cm-1) in the functionalized GO, however, I also found the same peak in the original GO. Then,...
09 September 2019 5,001 3 View
I know that normally the Mw, Mn and Mz values are sought and thus calculated from the distribution curves of GPC/SEC. I, however, need to go the other way. The Software for the GPC calculates...
29 August 2019 8,725 3 View
I dissolved PEO(10K)-b-PLLA(14K) in toluene at room temperature. And I found that the temperature is lower than polymer's crystallization temperature. I read some articles that crystalline state...
25 August 2019 2,602 11 View
I'm writing a chapter on medicinal plants and their merit in prevention and treatment of diseases. So I'm mentioning more than a dozen of phytocompounds and retrieving their structure form PubChem...
25 August 2019 9,048 3 View
Can these two terms be used interchangeably as commonly seen in the literature? Under which category are surfactant and polymer additives or coatings classified when used in colloidal...
24 August 2019 1,964 6 View
I want an eatable material(polymers, adhesive), which should have at least 90 degree Celsius. Please suggest me materilas..
04 August 2019 9,159 6 View
Can someone help me understand why cellulose acetate butyrate is more hydrophobic than cellulose acetate? I prepared nanofibers by electospinning of both polymers and both have initially the same...
04 August 2019 2,437 5 View
I have been searching for the calculation of carbonyl and hydroxyl index of styrene based polymers from its FTIR results, but i couldn't find a supportive literature. Kindly help me out to find a...
03 August 2019 6,012 4 View
Hi, I was wondering which one of the Pluronic (F-127 or F-108 or F-68 or etc.) I need to use to inhibit cell adhesion on the surface of PDMS microfluidic device? In terms of Biocompatibility with...
30 July 2019 1,224 3 View
I am preparing Polymer nano-composite for EMI shielding application.while, preparing the nano-composite I have to use APS for initiation of chemical reaction. Should I replace APS with AP? needs...
17 July 2019 8,962 5 View
Hi all, I am struggling to purify a series of polyesters which do not have melting points. That is to say, they do not nicely precipitate in non-solvents and instead form highly viscous gels. I...
16 July 2019 8,215 4 View
I am currently trying to characterize the behaviour of different plastic polymers, in particular when stretched in an uniaxial direction. I already conducted the classic tensile test, and got a...
11 July 2019 2,481 4 View
What is known about the degradation of such polymers in the environment?
08 July 2019 3,451 3 View
It's known that PLA has a slower degradation rate in soil.Does it have also slower hydrolysis rate compared to other degradable polymers? If so why?
19 June 2019 781 7 View
Increase of refractive index in polymers can be achieved by high polarizability. Low refractive index in polymers is usually linked to fluorination. Does that mean that fluorination reduces...
18 June 2019 2,831 3 View
Hello! I would like to carry out some experimentation of radiation treatment of polymers and its effects on the mechanical properties (depending on exposure rate and type of radiation). Is there...
18 June 2019 2,632 7 View