生物酶催化接枝芳纶纤维和复合材料的界面性能

doi:10.11901/1005.3093.2014.523

材料研究学报

2015, Vol. 29

Issue (10): 794-800 DOI: 10.11901/1005.3093.2014.523

本期目录 | 过刊浏览

生物酶催化接枝芳纶纤维和复合材料的界面性能

刘洋¹(

),梁国正²

1. 咸阳师范学院化学与化工学院咸阳 712000
2. 苏州大学化学化工学院苏州 215006

Surface Modification and Interface Properties of Enzyme-mediated Grafting Kevlar Fibers

Yang LIU^1,^**(

),Guozheng LIANG²

1. School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang 712000, China
2. Department of Chemistryand Chemical Engineering, Soochow university, Suzhou 215006, China

引用本文:

刘洋,梁国正. 生物酶催化接枝芳纶纤维和复合材料的界面性能[J]. 材料研究学报, 2015, 29(10): 794-800.
Yang LIU, Guozheng LIANG. Surface Modification and Interface Properties of Enzyme-mediated Grafting Kevlar Fibers[J]. Chinese Journal of Materials Research, 2015, 29(10): 794-800.

全文: PDF(2864 KB) HTML

摘要:

用辣根过氧化物酶(HRP)作为生物活性酶催化剂在芳纶纤维纤维表面上进行接枝反应, 生成一层带有活性官能团烯丙基缩水甘油醚的包覆层, 研究了生物酶催化接枝反应对芳纶纤维综合性能的影响。结果表明, 生物酶能有效地催化纤维上的接枝反应, 酶的浓度影响单体在纤维上的接枝率。随着酶浓度的提高有更多的单体接枝到纤维上, 使表面极性官能团含量、表面自由能和表面粗糙度大幅度地提高, 使纤维与树脂之间的界面结合强度增强。同时, 与原有的纤维改性方法相比, 生物酶催化接枝法基本保持了芳纶纤维的优异热学和力学性能。

关键词 ：有机高分子材料, 生物酶接枝, 芳纶纤维, 表面改性, 机械性能

Abstract：

Surface coating with functional groups on Poly (p-phenylene terephthalaramide) (Kevlar, KF) fibers was prepared through a polymerization using horseradish peroxidase (HRP) as bioactive catalyst. The effect of this approach on integrated properties of KF fibers was investigated. The results show that the polymerization can effectively perform on the fiber surface with the presence of HRP. The HRP content affects the grafting percentage of the fiber surface. More monomer was grafted on the fiber surface with the increase of HRP content, and there with the fiber surface possessed higher amount of polargroups, higher surface free energy, and higher roughness which then resulted in the enhancement of interface adhesion between the fibers with the resin matrix of the composite fibers/resin. Besides, this HRP catalytically grafted fibers hold more or less the same thermal and mechanical properties as the original KF fibers.

Key words： organic polymer materials enzyme-mediated grafting kevlar fibers surface modification mechanical properties

收稿日期: 2014-09-23

基金资助:* 陕西省教育厅项目2013JK0918和咸阳师范学院专项科研基金12XSYK026资助项目。

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https://www.cjmr.org/CN/10.11901/1005.3093.2014.523 或 https://www.cjmr.org/CN/Y2015/V29/I10/794

表1 主要实验原料

图1 单丝拉伸测试样品图

图2 不同酶浓度条件下纤维的表面形貌

图3 HRP含量对生物酶催化接枝KF纤维接枝率的影响

图4 不同酶浓度条件下纤维表面红外图谱

图5 不同酶浓度条件下纤维表面XPS扫描图谱

表2 不同酶浓度条件下纤维表面元素组成含量

图6 不同酶浓度条件下纤维表面广角X衍射谱图

表3 不同酶浓度条件下纤维表面晶体参数

图7 不同酶浓度条件下纤维单丝拉伸性能

图8 不同酶浓度条件下纤维的TG曲线和DTG曲线

表4 不同酶浓度条件下纤维的相关热分解参数

表5 不同酶浓度条件下纤维的接触角以及表面能

图9 不同酶浓度条件下纤维的界面结合强度

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