Synthesis and characterization of a dyeable bio-based polyurethane/branched poly(ethylene imine) interpenetrating polymer network with enhanced wet fastness
- Authors
- Chung, Jae Woo; Park, Ji Hwan; Choi, Hyung-Min; Oh, Kyung Wha
- Issue Date
- Feb-2019
- Publisher
- SAGE PUBLICATIONS LTD
- Keywords
- bio-based polyurethane; branched poly(ethylene imine); interpenetrating polymer network; acid dyeing; wet fastness of dye
- Citation
- TEXTILE RESEARCH JOURNAL, v.89, no.3, pp.335 - 346
- Journal Title
- TEXTILE RESEARCH JOURNAL
- Volume
- 89
- Number
- 3
- Start Page
- 335
- End Page
- 346
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/30773
- DOI
- 10.1177/0040517517743739
- ISSN
- 0040-5175
- Abstract
- Bio-based polyurethane is synthesized from biodegradable polycaprolactone, methylene diphenyl diisocyanate and 1,4-butanediol. The bio-based polyurethane is blended with branched polyethyleneimine by a solution casting method and further treated with glutaraldehyde. From nuclear magnetic resonance, Fourier-transform infrared spectroscopy, leaching tests and contact angle measurements, it was found that a semi-interpenetrating polymer network structure is induced by the glutaraldehyde treatment of the bio-based polyurethane/branched polyethyleneimine blend film, which resulting from the crosslinking of branched polyethyleneimine by imine bonds formed from the amine-aldehyde reaction between branched polyethyleneimine and glutaraldehyde. In addition, the glass transition temperature, Young's modulus and the shape retention results show that the mechanical strength of bio-based polyurethane, which is weakened by the plasticizing effect of branched polyethyleneimine, is restored by the formation of the semi-interpenetrating network structure. We found that the bio-based polyurethane/branched polyethyleneimine with a semi-interpenetrating network shows a much higher affinity for Acid Red 4 than bio-based polyurethane, and the wet fastness of dye is significantly improved by the formation of the semi-interpenetrating network.
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