Toughness enhancement of polyamide 1012 with intermolecular hydrogen bonding with 3-pentadecylphenol

IF 2.4 3区化学 Q2 POLYMER SCIENCE

Express Polymer Letters Pub Date : 2024-01-01 DOI:10.3144/expresspolymlett.2024.52

Jing Lu, Qin Ma, Jianqi Yao, Jiajie Yin, Ruiyan Zhang, Faliang Luo

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引用次数: 2

Abstract

In order to improve the impact toughness of polyamide 1012 (PA1012) by reducing the amount of hydrogen bonding resulting from PA1012 itself, 3-pentadecylphenol (PDP) was considered to be added into PA1012 using melting extrusion. The hydrogen bonding interaction between PA1012 and PDP was characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). The effects of PDP on the crystallization, melting process, and mechanical behavior of PA1012 were tested in detail. The results show that the PDP can reduce the temperature of PA1012 crystallization and melting but it can significantly improve elongation at break and impact toughness. The notched impact strength of the PA1012/PDP composites containing 20 wt% PDP reached to 70.6 kJ·m–2, which is about seven times that of the neat PA1012. The effects of PDP on PA1012 properties is ascribed to hydrogen bonding interaction between hydrogen bonding between phenol hydroxyl groups and amino groups on PA1012 chains. The deduction was also verified by adding acetylated 3-pentadecylphenol (APDP) to modify PA1012. It is believed the research will open up new prospects for the wide application of PA1012 toughening.

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3-十五基苯酚分子间氢键增强聚酰胺1012的韧性

为了通过减少PA1012本身产生的氢键量来提高聚酰胺1012 （PA1012）的冲击韧性，考虑采用熔融挤压法在PA1012中加入3-十五烷基酚（PDP）。采用傅里叶红外光谱（FTIR）和核磁共振（NMR）对PA1012与PDP之间的氢键相互作用进行了表征。详细研究了PDP对PA1012结晶、熔融过程和力学行为的影响。结果表明，PDP可以降低PA1012的结晶和熔化温度，但可以显著提高断裂伸长率和冲击韧性。含20% PDP的PA1012/PDP复合材料的缺口冲击强度达到70.6 kJ·m-2，约为纯PA1012的7倍。PDP对PA1012性能的影响归因于PA1012链上酚羟基与氨基之间的氢键相互作用。通过添加乙酰化3-五烷基酚（APDP）对PA1012进行改性，验证了这一推论。相信该研究将为PA1012增韧的广泛应用开辟新的前景。

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来源期刊

Express Polymer Letters 化学-高分子科学

CiteScore

5.60

自引率

6.10%

发文量

审稿时长

1.9 months

期刊介绍： The main scope of eXPRESS Polymer Letters (Express Polym Lett; ISSN 1788-618X) is to provide a very fast first publication possibility related to the following topics: polymers; polymer composites; blends and alloys; nanomaterials; molecular engineering; tailor-made polymers; biodegradable and biocompatible polymers; smart materials; polymer gels and membranes; reinforcements and fillers; polymer processing technologies; rubbers and rubber technologies; interfaces, interphases and adhesion; thin layer technologies; material testing and properties; recycling; modeling and simulation.