Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam
<p>Abstract</p> <p>Background</p> <p>Lignin is one of the three major components in plant cell walls, and it can be isolated (dissolved) from the cell wall in pretreatment or chemical pulping. However, there is a lack of high-value applications for lignin, and the commo...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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BMC
2013-01-01
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| Series: | Biotechnology for Biofuels |
| Subjects: | |
| Online Access: | http://www.biotechnologyforbiofuels.com/content/6/1/12 |
| _version_ | 1818534924913737728 |
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| author | Pan Xuejun Saddler Jack N |
| author_facet | Pan Xuejun Saddler Jack N |
| author_sort | Pan Xuejun |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Lignin is one of the three major components in plant cell walls, and it can be isolated (dissolved) from the cell wall in pretreatment or chemical pulping. However, there is a lack of high-value applications for lignin, and the commonest proposal for lignin is power and steam generation through combustion. Organosolv ethanol process is one of the effective pretreatment methods for woody biomass for cellulosic ethanol production, and kraft process is a dominant chemical pulping method in paper industry. In the present research, the lignins from organosolv pretreatment and kraft pulping were evaluated to replace polyol for producing rigid polyurethane foams (RPFs).</p> <p>Results</p> <p>Petroleum-based polyol was replaced with hardwood ethanol organosolv lignin (HEL) or hardwood kraft lignin (HKL) from 25% to 70% (molar percentage) in preparing rigid polyurethane foam. The prepared foams contained 12-36% (w/w) HEL or 9-28% (w/w) HKL. The density, compressive strength, and cellular structure of the prepared foams were investigated and compared. Chain extenders were used to improve the properties of the RPFs.</p> <p>Conclusions</p> <p>It was found that lignin was chemically crosslinked not just physically trapped in the rigid polyurethane foams. The lignin-containing foams had comparable structure and strength up to 25-30% (w/w) HEL or 19-23% (w/w) HKL addition. The results indicated that HEL performed much better in RPFs and could replace more polyol at the same strength than HKL because the former had a better miscibility with the polyol than the latter. Chain extender such as butanediol could improve the strength of lignin-containing RPFs.</p> |
| first_indexed | 2024-12-11T18:17:57Z |
| format | Article |
| id | doaj.art-42d418e29ea641c6b4f320a2b245914f |
| institution | Directory Open Access Journal |
| issn | 1754-6834 |
| language | English |
| last_indexed | 2024-12-11T18:17:57Z |
| publishDate | 2013-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Biotechnology for Biofuels |
| spelling | doaj.art-42d418e29ea641c6b4f320a2b245914f2022-12-22T00:55:21ZengBMCBiotechnology for Biofuels1754-68342013-01-01611210.1186/1754-6834-6-12Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foamPan XuejunSaddler Jack N<p>Abstract</p> <p>Background</p> <p>Lignin is one of the three major components in plant cell walls, and it can be isolated (dissolved) from the cell wall in pretreatment or chemical pulping. However, there is a lack of high-value applications for lignin, and the commonest proposal for lignin is power and steam generation through combustion. Organosolv ethanol process is one of the effective pretreatment methods for woody biomass for cellulosic ethanol production, and kraft process is a dominant chemical pulping method in paper industry. In the present research, the lignins from organosolv pretreatment and kraft pulping were evaluated to replace polyol for producing rigid polyurethane foams (RPFs).</p> <p>Results</p> <p>Petroleum-based polyol was replaced with hardwood ethanol organosolv lignin (HEL) or hardwood kraft lignin (HKL) from 25% to 70% (molar percentage) in preparing rigid polyurethane foam. The prepared foams contained 12-36% (w/w) HEL or 9-28% (w/w) HKL. The density, compressive strength, and cellular structure of the prepared foams were investigated and compared. Chain extenders were used to improve the properties of the RPFs.</p> <p>Conclusions</p> <p>It was found that lignin was chemically crosslinked not just physically trapped in the rigid polyurethane foams. The lignin-containing foams had comparable structure and strength up to 25-30% (w/w) HEL or 19-23% (w/w) HKL addition. The results indicated that HEL performed much better in RPFs and could replace more polyol at the same strength than HKL because the former had a better miscibility with the polyol than the latter. Chain extender such as butanediol could improve the strength of lignin-containing RPFs.</p>http://www.biotechnologyforbiofuels.com/content/6/1/12Kraft ligninLignin utilizationOrganosolv ligninPolyurethaneRigid foam |
| spellingShingle | Pan Xuejun Saddler Jack N Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam Biotechnology for Biofuels Kraft lignin Lignin utilization Organosolv lignin Polyurethane Rigid foam |
| title | Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam |
| title_full | Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam |
| title_fullStr | Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam |
| title_full_unstemmed | Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam |
| title_short | Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam |
| title_sort | effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam |
| topic | Kraft lignin Lignin utilization Organosolv lignin Polyurethane Rigid foam |
| url | http://www.biotechnologyforbiofuels.com/content/6/1/12 |
| work_keys_str_mv | AT panxuejun effectofreplacingpolyolbyorganosolvandkraftligninonthepropertyandstructureofrigidpolyurethanefoam AT saddlerjackn effectofreplacingpolyolbyorganosolvandkraftligninonthepropertyandstructureofrigidpolyurethanefoam |