含4-羧基的对苯基马来酰亚胺-交替-苯乙烯的引入及其对尼龙6热变形温度的影响

P(-Phenylmaleimide-Alt-Styrene) Introduced with 4-Carboxyl and Its Effect on the Heat Deflection Temperature of Nylon 6.

作者信息

Liu Yufei, He Min, Zhang Daohai, Zhao Qian, Li Yang, Qin Shuhao, Yu Jie

机构信息

Department of Polymer Material and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China.

National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, China.

出版信息

Materials (Basel). 2018 Nov 20;11(11):2330. doi: 10.3390/ma11112330.

DOI:10.3390/ma11112330

PMID:30463325

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6267326/

Abstract

P(-phenylmaleimide-alt-styrene) (P(NPMI-alt-St)) and P(-(4-carboxyphenyl)maleimide-alt-styrene) (P(CPMI-alt-St)) were designed and synthesized via free radical copolymerization. Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (¹H NMR and C NMR), gel permeation chromatography (GPC), and differential scanning calorimetry (DSC) were used to confirm the structure of P(NPMI-alt-St) and P(CPMI-alt-St). Next, the effect of P(CPMI-alt-St) on the heat deflection temperature () of nylon 6 was studied. In comparison to the PA6/P(NPMI-alt-St) blend, with the addition of 10 wt %, the value of the PA6/P(CPMI-alt-St) blend increased by 15.7 °C, and the glass transition temperature (g) by Dynamic mechanical analysis (DMA) increased 2.3 °C. According to the analysis of DMA, dynamic viscosity, and the SEM of PA6 and its blends, P(CPMI-alt-St) promoted its compatibility with PA6, and promoted the storage modulus and dynamic viscosity of the blends. Thus, the introduction of 4-carboxyl can significantly improve the effect of P(CPMI-alt-St) on the heat resistance modification of nylon 6.

摘要

通过自由基共聚设计并合成了聚（对苯基马来酰亚胺-alt-苯乙烯）（P（NPMI-alt-St））和聚（对（4-羧基苯基）马来酰亚胺-alt-苯乙烯）（P（CPMI-alt-St））。采用傅里叶变换红外光谱（FT-IR）、核磁共振光谱（¹H NMR和¹³C NMR）、凝胶渗透色谱（GPC）和差示扫描量热法（DSC）来确认P（NPMI-alt-St）和P（CPMI-alt-St）的结构。接下来，研究了P（CPMI-alt-St）对尼龙6热变形温度（）的影响。与PA6/P（NPMI-alt-St）共混物相比，添加10 wt%时，PA6/P（CPMI-alt-St）共混物的值提高了15.7℃，通过动态力学分析（DMA）测得的玻璃化转变温度（Tg）提高了2.3℃。根据对PA6及其共混物的DMA、动态粘度和扫描电子显微镜（SEM）分析，P（CPMI-alt-St）促进了其与PA6的相容性，并提高了共混物的储能模量和动态粘度。因此，引入4-羧基可显著提高P（CPMI-alt-St）对尼龙6耐热改性的效果。