Investigators at Air Products & Chemicals Inc. Describe Findings in Macromolecular Research [Thermally Rearranged Poly(benzoxazole-co-imide) Membranes with Superior Mechanical Strength for Gas Separation Obtained by Tuning Chain Rigidity]
By a News Reporter-Staff News Editor at Science Letter -- Fresh data on Macromolecular Research are presented in a new report. According to news reporting out of St. Louis, Missouri, by NewsRx editors, research stated, "Thermally rearranged polybenzoxazoles (TR-PBO) are some of the most promising materials for gas separation because of their microporous and bimodal cavities that offer high gas transport performance. However, the brittleness of fully converted TR-PBO membranes has impeded their widespread industrial implementation."
Our news journalists obtained a quote from the research from Air Products & Chemicals Inc., "In this study, we prepared novel, thermally rearranged poly(benzoxazole-co-imide) membranes (TR-PBOI) with improved mechanical strength and good gas separation performance. These membranes are based on two commercially available TR-able diamines and two non-TR-able diamines with various compositions and different polymer rigidities. TR-PBOI membranes with the appropriate ratio of PBO and PI displayed a high fractional free volume and therefore exceptional gas separation properties (CO2 permeability over 300 barrer and CO2/N-2 ideal selectivity above 20); both these values were higher than those of the corresponding original TR-PBO membranes."
According to the news editors, the research concluded: "Furthermore, a substantial improvement in the mechanical properties of TR-PBOI membranes relative to their TR-PBO counterparts was observed."
For more information on this research see: Thermally Rearranged Poly(benzoxazole-co-imide) Membranes with Superior Mechanical Strength for Gas Separation Obtained by Tuning Chain Rigidity. Macromolecules, 2015;48(7):2194-2202. Macromolecules can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Macromolecules - www.pubs.acs.org/journal/mamobx)
Our news journalists report that additional information may be obtained by contacting H.J. Jo, Air Prod & Chem Inc, St Louis, MO 63146, United States. Additional authors for this research include C.Y. Soo, G. Dong, Y.S. Do, H.H. Wang, M.J. Lee, J.R. Quay, M.K. Murphy and Y.M. Lee (see also Macromolecular Research).
Keywords for this news article include: Missouri, St. Louis, United States, Macromolecular Research, North and Central America
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2015, NewsRx LLC
(c) 2015 NewsRx LLC, source Health Newsletters