Preparation and Modification of Sucrose-Based Non-Isocyanate Polyurethane Adhesives for Plywood Bonding
The production of non-isocyanate polyurethane (NIPU) resins using recyclable biomass materials and no isocyanates as a substitute for traditional polyurethane (PU) materials has become a research focus in the polyurethane industry. The development of such NIPU resins for application as wood adhesive...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-03-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/30/7/1541 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850212926738137088 |
|---|---|
| author | Hongyi Zhong Qianyu Zhang Hong Lei Xiaojian Zhou Jun Zhang Guanben Du Antonio Pizzi Xuedong Xi |
| author_facet | Hongyi Zhong Qianyu Zhang Hong Lei Xiaojian Zhou Jun Zhang Guanben Du Antonio Pizzi Xuedong Xi |
| author_sort | Hongyi Zhong |
| collection | DOAJ |
| description | The production of non-isocyanate polyurethane (NIPU) resins using recyclable biomass materials and no isocyanates as a substitute for traditional polyurethane (PU) materials has become a research focus in the polyurethane industry. The development of such NIPU resins for application as wood adhesives has also emerged as an interesting new research topic. In this study, sucrose was used to react with dimethyl carbonate, and then polymerized with an amine to prepare sucrose-based non-isocyanate polyurethane (SNIPU) adhesives and evaluate their suitability for use in plywood. Four amines, namely polyethylene amine (PEI) of molecular weight (MW) 10,000, PEI of MW 1800, diethylenetriamine, and hexanediamine were tested in the preparation of SNIPU adhesives to determine a more suitable amine showing optimal adhesion performance. The effect of the amount of the amine added on adhesive properties was further investigated. The results showed that the SNIPU adhesive prepared with PEI-10000 as amine presents a good bonding performance. The SNIPU prepared with a PEI-10000 content of 45% (<i>w/w</i> on sucrose) presented the highest bonding strength. The dry strength, 24 h cold water (23 °C) wet strength, and 3 h hot water (63 °C and 93 °C) wet strengths of its bonded plywood were 1.26 MPa, 0.90 MPa, 0.84 MPa, and 0.80 MPa, respectively. Furthermore, the addition of 13% (<i>w/w</i> on SNIPU adhesive) of ethylene glycol diglycidyl ether (EGDE) as a modifier showed a significant decrease of 20 °C of the curing temperature of the SNIPU adhesive. |
| format | Article |
| id | doaj-art-54dc3673c0d54555ada2fb7c194225af |
| institution | OA Journals |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-54dc3673c0d54555ada2fb7c194225af2025-08-20T02:09:14ZengMDPI AGMolecules1420-30492025-03-01307154110.3390/molecules30071541Preparation and Modification of Sucrose-Based Non-Isocyanate Polyurethane Adhesives for Plywood BondingHongyi Zhong0Qianyu Zhang1Hong Lei2Xiaojian Zhou3Jun Zhang4Guanben Du5Antonio Pizzi6Xuedong Xi7Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material Science and Chemistry Engineering, Southwest Forestry University, Kunming 650224, ChinaYunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material Science and Chemistry Engineering, Southwest Forestry University, Kunming 650224, ChinaSchool of Chemistry and Material Engineering, Zhejiang A&F University, Hangzhou 311300, ChinaYunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material Science and Chemistry Engineering, Southwest Forestry University, Kunming 650224, ChinaYunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material Science and Chemistry Engineering, Southwest Forestry University, Kunming 650224, ChinaYunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material Science and Chemistry Engineering, Southwest Forestry University, Kunming 650224, ChinaLERMAB, University of Lorraine, 88000 Epinal, FranceYunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material Science and Chemistry Engineering, Southwest Forestry University, Kunming 650224, ChinaThe production of non-isocyanate polyurethane (NIPU) resins using recyclable biomass materials and no isocyanates as a substitute for traditional polyurethane (PU) materials has become a research focus in the polyurethane industry. The development of such NIPU resins for application as wood adhesives has also emerged as an interesting new research topic. In this study, sucrose was used to react with dimethyl carbonate, and then polymerized with an amine to prepare sucrose-based non-isocyanate polyurethane (SNIPU) adhesives and evaluate their suitability for use in plywood. Four amines, namely polyethylene amine (PEI) of molecular weight (MW) 10,000, PEI of MW 1800, diethylenetriamine, and hexanediamine were tested in the preparation of SNIPU adhesives to determine a more suitable amine showing optimal adhesion performance. The effect of the amount of the amine added on adhesive properties was further investigated. The results showed that the SNIPU adhesive prepared with PEI-10000 as amine presents a good bonding performance. The SNIPU prepared with a PEI-10000 content of 45% (<i>w/w</i> on sucrose) presented the highest bonding strength. The dry strength, 24 h cold water (23 °C) wet strength, and 3 h hot water (63 °C and 93 °C) wet strengths of its bonded plywood were 1.26 MPa, 0.90 MPa, 0.84 MPa, and 0.80 MPa, respectively. Furthermore, the addition of 13% (<i>w/w</i> on SNIPU adhesive) of ethylene glycol diglycidyl ether (EGDE) as a modifier showed a significant decrease of 20 °C of the curing temperature of the SNIPU adhesive.https://www.mdpi.com/1420-3049/30/7/1541biomass adhesiveNIPUsucrosebonding strength |
| spellingShingle | Hongyi Zhong Qianyu Zhang Hong Lei Xiaojian Zhou Jun Zhang Guanben Du Antonio Pizzi Xuedong Xi Preparation and Modification of Sucrose-Based Non-Isocyanate Polyurethane Adhesives for Plywood Bonding Molecules biomass adhesive NIPU sucrose bonding strength |
| title | Preparation and Modification of Sucrose-Based Non-Isocyanate Polyurethane Adhesives for Plywood Bonding |
| title_full | Preparation and Modification of Sucrose-Based Non-Isocyanate Polyurethane Adhesives for Plywood Bonding |
| title_fullStr | Preparation and Modification of Sucrose-Based Non-Isocyanate Polyurethane Adhesives for Plywood Bonding |
| title_full_unstemmed | Preparation and Modification of Sucrose-Based Non-Isocyanate Polyurethane Adhesives for Plywood Bonding |
| title_short | Preparation and Modification of Sucrose-Based Non-Isocyanate Polyurethane Adhesives for Plywood Bonding |
| title_sort | preparation and modification of sucrose based non isocyanate polyurethane adhesives for plywood bonding |
| topic | biomass adhesive NIPU sucrose bonding strength |
| url | https://www.mdpi.com/1420-3049/30/7/1541 |
| work_keys_str_mv | AT hongyizhong preparationandmodificationofsucrosebasednonisocyanatepolyurethaneadhesivesforplywoodbonding AT qianyuzhang preparationandmodificationofsucrosebasednonisocyanatepolyurethaneadhesivesforplywoodbonding AT honglei preparationandmodificationofsucrosebasednonisocyanatepolyurethaneadhesivesforplywoodbonding AT xiaojianzhou preparationandmodificationofsucrosebasednonisocyanatepolyurethaneadhesivesforplywoodbonding AT junzhang preparationandmodificationofsucrosebasednonisocyanatepolyurethaneadhesivesforplywoodbonding AT guanbendu preparationandmodificationofsucrosebasednonisocyanatepolyurethaneadhesivesforplywoodbonding AT antoniopizzi preparationandmodificationofsucrosebasednonisocyanatepolyurethaneadhesivesforplywoodbonding AT xuedongxi preparationandmodificationofsucrosebasednonisocyanatepolyurethaneadhesivesforplywoodbonding |