Add time:08/07/2019 Source:sciencedirect.com
The local segregation and dynamics of poly(propyl methacrylate) (PPMA) are studied as a function of temperature by X-rays and by dielectric spectroscopy and rheology, respectively. Pressure is employed in dielectric spectroscopy for investigating the origin of segmental dynamics and for separating the segmental from the faster β-process. The segmental dynamics of PPMA is controlled mainly by temperature via the intramolecular barriers. The pressure coefficient of the glass temperature is one of the lowest ever reported (dTg/dP = 150 K/GPa). Based on this finding we examined a possible correlation between the values of the ratio of the apparent activation energy.
We also recommend Trading Suppliers and Manufacturers of PPG-2 PROPYL ETHER (cas 127303-87-1). Pls Click Website Link as below: cas 127303-87-1 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View