PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDS
Lignin-based epoxy resin (LER) was prepared from phenolated lignin (PL) and epichlorohydrin (ECH) in the presence of sodium hydroxide. The eucalyptus acetic acid lignin (AAL) was first reacted with phenol in the presence of sulfuric acid to obtain PL. Then, PL was reacted with ECH in aqueous sodium...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2012-05-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_3_2860_Feng_Chen_Prep_Characterization_Acetic_Acid_Lignin_Epoxy_Blends/1548 |
| _version_ | 1818700463327936512 |
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| author | Fangeng Chen Pan Feng, |
| author_facet | Fangeng Chen Pan Feng, |
| author_sort | Fangeng Chen |
| collection | DOAJ |
| description | Lignin-based epoxy resin (LER) was prepared from phenolated lignin (PL) and epichlorohydrin (ECH) in the presence of sodium hydroxide. The eucalyptus acetic acid lignin (AAL) was first reacted with phenol in the presence of sulfuric acid to obtain PL. Then, PL was reacted with ECH in aqueous sodium hydroxide to obtain LER. LER was mixed with diglycidyl ether of bisphenol A (E-44) and then cured with triethylenetetramine (TETA). The initial thermal degradation temperature (Td) of the cured epoxy blends decreased with the increase in LER content. The residue ratio at 500 °C of the cured epoxy blends (R500), however, increased with the LER content. The maximum adhesive shear strength of the cured epoxy blends was obtained at 20 wt% of LER. The water absorption of epoxy blends increased with increasing the content of LER. SEM photos showed that increasing the content of LER increased inhomogeneity and porosity of epoxy blends. |
| first_indexed | 2024-12-17T15:05:21Z |
| format | Article |
| id | doaj.art-7e8d39e88085487aa0a0692a42d833f7 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-17T15:05:21Z |
| publishDate | 2012-05-01 |
| publisher | North Carolina State University |
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| series | BioResources |
| spelling | doaj.art-7e8d39e88085487aa0a0692a42d833f72022-12-21T21:43:47ZengNorth Carolina State UniversityBioResources1930-21262012-05-017328602870PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDSFangeng ChenPan Feng,Lignin-based epoxy resin (LER) was prepared from phenolated lignin (PL) and epichlorohydrin (ECH) in the presence of sodium hydroxide. The eucalyptus acetic acid lignin (AAL) was first reacted with phenol in the presence of sulfuric acid to obtain PL. Then, PL was reacted with ECH in aqueous sodium hydroxide to obtain LER. LER was mixed with diglycidyl ether of bisphenol A (E-44) and then cured with triethylenetetramine (TETA). The initial thermal degradation temperature (Td) of the cured epoxy blends decreased with the increase in LER content. The residue ratio at 500 °C of the cured epoxy blends (R500), however, increased with the LER content. The maximum adhesive shear strength of the cured epoxy blends was obtained at 20 wt% of LER. The water absorption of epoxy blends increased with increasing the content of LER. SEM photos showed that increasing the content of LER increased inhomogeneity and porosity of epoxy blends.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_3_2860_Feng_Chen_Prep_Characterization_Acetic_Acid_Lignin_Epoxy_Blends/1548LigninEpoxy resinBlendsThermal stabilityAdhesive shear strength |
| spellingShingle | Fangeng Chen Pan Feng, PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDS BioResources Lignin Epoxy resin Blends Thermal stability Adhesive shear strength |
| title | PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDS |
| title_full | PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDS |
| title_fullStr | PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDS |
| title_full_unstemmed | PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDS |
| title_short | PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDS |
| title_sort | preparation and characterization of acetic acid lignin based epoxy blends |
| topic | Lignin Epoxy resin Blends Thermal stability Adhesive shear strength |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_3_2860_Feng_Chen_Prep_Characterization_Acetic_Acid_Lignin_Epoxy_Blends/1548 |
| work_keys_str_mv | AT fangengchen preparationandcharacterizationofaceticacidligninbasedepoxyblends AT panfeng preparationandcharacterizationofaceticacidligninbasedepoxyblends |