Synthesis of polyhydric alcohols derived from limonene glycol and its application to polyurethane networks
-
- Hisatoyo Morinaga
- Faculty of Education, Graduate Faculty of Interdisciplinary Research, University of Yamanashi.
-
- Rikka Kado
- Faculty of Education, University of Yamanashi. Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi.
-
- Tetsuo Kuwabara
- Faculty of Engineering, Graduate Faculty of Interdisciplinary Research, University of Yamanashi.
Bibliographic Information
- Other Title
-
- リモネングリコールを利用した多価アルコールの合成と そのネットワークポリウレタンへの展開
- リモネングリコール オ リヨウ シタ タカ アルコール ノ ゴウセイ ト ソノ ネットワークポリウレタン エ ノ テンカイ
Search this article
Abstract
<p>Biobased polyhydric alcohols (bis-LG, tri-LG, tetra-LG) with different numbers of hydroxy groups (n=4,6,8, respectively) were synthesized using limonene glycol (LG). Cross-linking reaction of polyhydric alcohols and methylenediphenyl 4,4'-diisocyanate (MDI) with [OH]0/[NCO]0=1/1(mol/mol) afforded the corresponding polyurethane networks in 40%, 60%, and 92% yields, respectively. Thermal resistance of the network polymers increased with increasing number of hydroxy groups in polyhydric alcohols. Metal-tometal adhesive using bis-LG and tetra-LG was evaluated by lap shear test, resulting in 2.7 MPa and 5.9 MPa, respectively. When polyurethane foam was prepared by PPG (polypropylene glycol) (90%) and bis-LG (10%), the 5% thermal decomposition temperature and tensile strength of the corresponding polyurethane foam was 16 °C higher and 4 times stronger, respectively, compared to that derived from PPG only. (Received March 22, 2023; Accepted April 5, 2023) Key-words : limonene glycol, polyhydric alcohols, polyurethane networks, polyurethane foams Biobased polyhydric alcohols (bis-LG, tri-LG, tetra-LG) with different numbers of hydroxy groups (n=4,6,8, respectively) were synthesized using limonene glycol (LG). Cross-linking reaction of polyhydric alcohols and methylenediphenyl 4,4'-diisocyanate (MDI) with [OH]0/[NCO]0=1/1(mol/mol) afforded the corresponding polyurethane networks in 40%, 60%, and 92% yields, respectively. Thermal resistance of the network polymers increased with increasing number of hydroxy groups in polyhydric alcohols. Metal-tometal adhesive using bis-LG and tetra-LG was evaluated by lap shear test, resulting in 2.7 MPa and 5.9 MPa, respectively. When polyurethane foam was prepared by PPG (polypropylene glycol) (90%) and bis-LG (10%), the 5% thermal decomposition temperature and tensile strength of the corresponding polyurethane foam was 16 °C higher and 4 times stronger, respectively, compared to that derived from PPG only. (Received March 22, 2023; Accepted April 5, 2023) Biobased polyhydric alcohols (bis-LG, tri-LG, tetra-LG) with different numbers of hydroxy groups(n=4,6,8, respectively) were synthesized using limonene glycol (LG). Cross-linking reaction of polyhydric alcohols and methylenediphenyl 4,4'-diisocyanate (MDI) with [OH]0/[NCO]0=1/1(mol/mol) afforded the corresponding polyurethane networks in 40%, 60%, and 92% yields, respectively. Thermal resistance of the network polymers increased with increasing number of hydroxy groups in polyhydric alcohols. Metal-tometal adhesive using bis-LG and tetra-LG was evaluated by lap shear test, resulting in 2.7 MPa and 5.9 MPa, respectively. When polyurethane foam was prepared by PPG (polypropylene glycol) (90%) and bis-LG (10%), the 5% thermal decomposition temperature and tensile strength of the corresponding polyurethane foam was 16℃ higher and 4 times stronger,respectively,compared to that derived from PPG only.</p>
Journal
-
- Journal of Networkpolymer,Japan
-
Journal of Networkpolymer,Japan 44 (4), 168-176, 2023-07-10
Japan Thermosetting Plastics Industry Association
- Tweet
Details 詳細情報について
-
- CRID
- 1390578360713972224
-
- NII Book ID
- AA1281058X
-
- ISSN
- 24342149
- 24333786
-
- NDL BIB ID
- 032959772
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- KAKEN
-
- Abstract License Flag
- Disallowed