Journal
RSC ADVANCES
Volume 8, Issue 28, Pages 15754-15761Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra01089g
Keywords
-
Categories
Funding
- National Key R&D Program of China [2017YFB0307902]
- Special Support Plan of Guangdong Province [2014TQ01N603]
- Guangdong Provincial Science and Technology Plan Projects [2015B020241001]
- National Science and Technology Major Project [2014ZX07213001, 2017ZX07402004]
Ask authors/readers for more resources
Enzymatic hydrolysis residues (EHR) from corn stalk are industrial waste from the cellulosic ethanol industry. Lignin was separated as a bio-based polyol from EHR replacing partial petroleum-based polyether polyol to prepare bio-based polyurethane (BPU) foams without any other biomass pretreatment. Single factor experiment and response surface methodology (RSM) were employed to optimize separation conditions and reveal the significant influence of the interaction of conditions on the yield of separated lignin (SL). The effect of SL content (2.5, 5.0, 7.5, 10 and 15%) on the foams morphology and mechanical properties was assessed. Scanning electron microscopy (SEM) results implied that the cell shape was considerably affected by the large SL content, which contributed to an irregular, inhomogeneous, and thick cell wall. An astonishing 9.56 times increase in the compressive modulus and exponential 97.93 times boost in the compressive strength of BPU foams were attributed to the content of 15% SL without any further surface chemical modification. This present paper reports a green, potential and promising method for complete utilization of lignin from EHR in consideration of their abundant supply to greatly enhance the mechanical properties of BPU foams.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available