摘要
通过双键和巯基的点击反应,在聚丁二烯(PB)的分子链上接枝了邻二羟基官能团,并与单宁酸(TA)通过氢键和硼酯键的相互作用,制备了含有多重作用的交联PB。采用核磁共振氢谱、傅里叶变换红外光谱对材料进行表征。结果表明,邻二羟基成功接枝到PB分子链上,通过邻二羟基和TA的氢键相互作用,提高了TA与PB基体的相容性。引入的氢键和硼酯键可有效提高PB的力学性能和抗老化性能,并具有良好的可重塑性。
Through the click reaction of double bond and sulfhydryl group,the dihydroxyl functional group was grafted onto the polybutadiene(PB)molecular chain.And tannic acid(TA)was successfully incorporated into dihydroxyl functionalized PB through the synergy of hydrogen bonding interactions and dynamic boronic ester bonds,prepared multifunctional cross-linked PB.The structure of the polymer composites was characterized by nuclear magnetic resonance hydrogen spectroscopy and Fourier transform infrared spectroscopy.The results showed that dihydroxyl group was successfully graf-ted onto the PB molecular chain.The compatibility of TA in PB matrix was improved by the hydrogen bonds between the dihydroxyl group and TA.The introduction of hydrogen and boronic ester bonds could improve the mechanical properties of PB effectively.TA endowed the PB with ageing resistance,and the cross-linked PB had great remoldability.
作者
任清晨
史子兴
REN Qing-chen;SHI Zi-xing(School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《合成橡胶工业》
CAS
北大核心
2021年第5期373-378,共6页
China Synthetic Rubber Industry
基金
国家自然科学基金资助项目(51873104,52073171)。
关键词
聚丁二烯
单宁酸
硼酯键
力学性能
抗老化性能
可重塑性能
polybutadiene
tannic acid
boronic ester bond
mechanical property
aging resistance
remoldability
