Structure-property relationship in fully biobased epoxidized soybean oil thermosets cured by dicarboxyl terminated polyamide 1010 oligomer with different carboxyl/epoxy ratios
Structure-property relationship in fully biobased epoxidized soybean oil thermosets cured by dicarboxyl terminated polyamide 1010 oligomer with different carboxyl/epoxy ratios
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不同羧基/环氧基比例的二羧基封端聚酰胺 1010 低聚物固化的全生物基环氧化大豆油热固性材料的结构-性能关系
DOI：
10.1016/j.polymertesting.2019.106057
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发表时间：
2019-10
期刊：
影响因子：
5.1
通讯作者：
Li Yi-Dong
中科院分区：
文献类型：
--
作者：
Wang Xiang-Zhao;He Jia;Weng Yun-Xuan;Zeng Jian-Bing;Li Yi-Dong
采用端羧基聚酰胺1010低聚物对环氧大豆油（ESO）进行固化，通过改变羧基/环氧当量比（r值），合成具有不同化学结构的全生物基环氧热固性树脂。系统地研究了环氧热固性材料的化学结构对交联密度、膨胀性能、结晶性能、动静态力学性能和热稳定性的影响。随着r值的增大，环氧热固性树脂的交联密度明显增大，凝胶分数基本保持不变，溶胀率逐渐减小。随着r值的增加，聚酰胺1010片段浓度的增加使热固性材料的结晶能力和结晶度增强，同时熔融温度向较高的温度范围转移。从而提高了环氧热固性树脂的刚度和耐热性。随着r值的增大，杨氏模量逐渐增大，断裂应力和断裂应变先增大后减小。本研究为大豆油基环氧热固性聚合物的物理性能调控提供了一种新的策略，对其他植物油基聚合物的设计具有参考价值。
Dicarboxyl terminated polyamide 1010 oligomer was used to cure epoxidized soybean oil (ESO) to synthesize fully biobased epoxy thermosets with different chemical structures via changing carboxyl/epoxy equivalent ratio (R-value). The effect of chemical structures of the epoxy thermosets on their crosslink density, swelling property, crystallization behavior, dynamic and static mechanical properties, as well as thermal stability was studied systematically. The crosslink density of the epoxy thermosets increased obviously, the gel fraction almost kept unchanged, and the swelling ratio decreased gradually with increasing R-value. The crystallization capability and degree of crystallinity were enhanced meanwhile melting temperature shifted to higher temperature range with increasing R-value, due to the increased concentration of polyamide 1010 segments in the thermoset. Consequently, the stiffness and heat resistance of the epoxy thermosets were enhanced. The Young's modulus increased gradually and the break stress as well as the break strain first increased and then decreased with increasing R-value. This investigation provides a new strategy to regulate physical properties of soybean oil-based epoxy thermosets, which would be valuable for other plant oil-based polymers design.
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DOI：
10.3390/molecules23112739
发表时间：
2018-10-23
期刊：
Molecules (Basel, Switzerland)
影响因子：
--
作者：
Couture G;Granado L;Fanget F;Boutevin B;Caillol S
通讯作者：
Caillol S
植物油衍生的环氧聚合物走向可持续的生物基热固性材料
影响因子：
4.6
作者：
Wang Zhongkai;Yuan Liang;Ganewatta Mitra S.;Lamm Meghan E.;Rahman Md Anisur;Wang Jifu;Liu Shengquan;Tang Chuanbing
通讯作者：
Tang Chuanbing
影响因子：
5.2
作者：
Manqing Yan;Han Yang
通讯作者：
Manqing Yan;Han Yang
影响因子：
8.4
作者：
Jintao Wan;Jianqing Zhao;B. Gan;Cheng Li;J. Molina-Aldareguia;Ying Zhao;Ye-Tang Pan;De‐yi Wang-De‐yi-W
通讯作者：
Jintao Wan;Jianqing Zhao;B. Gan;Cheng Li;J. Molina-Aldareguia;Ying Zhao;Ye-Tang Pan;De‐yi Wang-De‐yi-W
影响因子：
6.2
作者：
A. Maiorana;Stephen Spinella;R. Gross
通讯作者：
A. Maiorana;Stephen Spinella;R. Gross