Toughness enhancement of polyamide 6,12 with intermolecular hydrogen bonding with <scp>3‐pentadecylphenol</scp>
Jing Lu, Amirjalal Jalali, Jianqi Yao, Qin Ma, Jiajie Yin, Ruiyan Zhang, Faliang Luo
Abstract
Abstract Due to the brittle performance of polyamide 6,12 (PA6,12) in high impact environment, we report a facile, efficient, and scalable method to toughen PA6,12 by establishing intermolecular hydrogen bonding (H‐bonding) interaction with 3‐pentadecylphenol (PDP). Interestingly, the intermolecular H‐bonding interaction obviously hindered PA crystallization, which was evidenced by decrease of crystalline temperature from 186.8 to 175.8°C and prolong of crystallization half‐time from 0.27 to 0.37 min, when the amount of PDP was increased to 30 wt%. Consequently, the toughness of the PA6,12/PDP composites containing 30 wt% PDP was improved and their notched impact strength reached to 17.5 kJ m −2 , about three times higher than that of the neat PA6,12. It was deduced that both plasticizing effect and intermolecular H‐bonding interaction played critical roles in PA6,12 resultant composites toughness, which opens a new perspective of PA6,12 toughening for a wide range of applications.