Akihisa Yamaguchi

6 Questions 4 Answers 0 Followers

Questions related from Akihisa Yamaguchi

Analysis of stress and strain of polymer films by Raman spectroscopy

The stress and strain of inorganic materials such as Si films can be measured by Raman spectroscopy. Can we analyze the stress of organic materials such as polymer films by Raman spcetroscopy ?

07 July 2017 5,751 4 View

What is a quenching mechanism of the chain-growth polymerization via Suzuki-Miyaura coupling ?

After quenching a chain-growth polymerization via Suzuki-Miyaura coupling, normally two kinds of polymer ends are obtained. One is (polymer)-H, the other is (polymer)-Br. Why does this happen ??...

03 March 2016 4,027 0 View

What is the origin of log-normal distribution in emulsion droplets and other particle systems ?

In many cases of emulsion droplets prepared by homogenization and ultrasonication, the size distribution can be fitted by a log-normal fitting. I want to know why that is.

09 September 2014 5,826 9 View

Is alkanethiol stable in aq. HCl ?

In the acid condition, is thiol easily oxidized to disulfide or any others? I prepared 2-propanol solution containing dodecanethiol for SAM. I checked the thiol group before and after addition of...

10 October 2013 2,760 4 View

What kind of reaction occurs in the process of cross-linking of PDMS, polydimethylsiloxane (sylgard 184, Dow chemicals) by a thermal annealing?

I want know how the PDMS precursor liquids cross-link. Is there any initiator inside?

07 July 2013 8,368 8 View

Are there any transparent elastomer?

I prepared a PDMS film (sylgard 184), but it has absorption around 250 nm and 200 nm. Can I remove these absorption? I need transparency from 190 nm to NIR.

04 April 2013 7,326 4 View