The effect of urethane and urea content on the gas permeation properties of poly(urethane-urea) membranes
β Scribed by Morteza Sadeghi; Mohammad Ali Semsarzadeh; Mehdi Barikani; Behnam Ghalei
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 918 KB
- Volume
- 354
- Category
- Article
- ISSN
- 0376-7388
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of China ## SYNOPSIS As an absorbent of C 0 2 , tetraethylenepentamine (TEPA) and/or N-methyldiethanolamine (MDEA) was introduced into the hard segment as chain extenders of the series urethane polymer (PU), urea-urethane polymer (PUU), and segmented urethane/urea-urethane copolymer (SPU) based o
## Abstract A series of waterborne poly(urethaneβurea)s, WPUUs, based on using nonpolar hydroxylβterminated polybutadiene (HTPB) as the soft segment, were successfully synthesized in this article. The effects of the COOH group content and softβsegment molecular weight (Mn~s~) on the dispersion, mor