| 孙鹏霄张东宪侯巍郭海涛王星韩一生△.壳聚糖接枝改性PET 人工韧带的表面结构与特性研究[J].,2012,12(7):1257-1260 |
| 壳聚糖接枝改性PET 人工韧带的表面结构与特性研究 |
| Structure and Properties of PET Fabric Modifiedby Chitosan Surface Grafting |
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| DOI： |
| 中文关键词: 人工韧带 聚对苯二甲酸乙二醇酯 化学接枝 壳聚糖 酰胺化 |
| 英文关键词: Artificial ligaments Polyethylene terephthalate Chemical grafting Chitosan Amidization |
| 基金项目:国家自然科学基金项目（81071457） |
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| 中文摘要: |
| 目的：于聚对苯二甲酸乙二醇酯（PET）人工韧带材料表面接枝壳聚糖长链分子，对改性PET 人工韧带的表面结构与特性进
行分析，以期为较好生物相容性的PET 人工韧带材料的设计和研发奠定一定的理论基础和技术支持。方法：首先采用化学接枝法
在聚对苯二甲酸乙二醇酯(PET)织物表面接枝丙烯酸(PET-AAc)，再与壳聚糖分子发生酰胺化反应实现PET 表面的壳聚糖接枝
(PET-CHI)。借助接触角、x 射线光电子能谱(XPS)、傅立叶红外光谱(FTIR)、热失重(TG)和扫描电镜(SEM)等对PET 改性效果进行
分析表征。结果：壳聚糖长链分子成功接枝到PET 表面，壳聚糖在PET 表面的接枝厚度为2.25 μm，接枝量为9.66 wt%。结论：接
枝改性后PET 表面亲水性有较大提高，浸润性得到改善。 |
| 英文摘要: |
| Objective: To improve the hydrophilicity of PET fabric texture in order to increase its histocompatibility. Evaluate the
effects of surface modified PET fabric texture. Methods: Acrylic acid was grafted on the surface of polyethylene terephthalate fabric
(PET-AAc) by chemical grafting method firstly, then chitosan could be grafted on the PET surface (PET-CHI) successfully by the
amidization reaction between PET-AAC and chitosan. The modification effect of PET was analyzed and characterized by contact angles,
X-ray photoelectron spectroscopy (XPS), Fourier transformed infrared spectroscopy (FTIR), Thermal-gravimetric analyzer (TGA) and
Scanning electric microscope (SEM). Results: Chitosan long-chain molecule was successfully grafted on the surface of PET, the grafting
thickness and grafting mass fraction of chitosan was 2.25μm and 9.66wt%, respectively. Conclusions: The hydrophilicity was highly
increased and wetting property was also improved by grafting macromolecule acute radicals. Effect was restricted to the surface,
mechanical property remained well. |
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