中国塑料 ›› 2013, Vol. 27 ›› Issue (01): 52-56.DOI: 10.19491/j.issn.1001-9278.2013.01.011

• 材料与性能 • 上一篇    下一篇

60Co-γ射线引发聚氨醋接枝N一乙烯基毗咯烷酮的性能研究

倪茂君1,王春雷2,王静霞1,陈屿恒1,陈竹平1*   

  1. 1.四川省原子能研究院,四川成都610101; 2.苏州中核华东辐照有限公司,江苏苏州215200


  • 收稿日期:2012-08-10 修回日期:2012-09-24 出版日期:2013-01-26 发布日期:2020-11-12
  • 基金资助:
    四川省科技支撑计划项目(项目编号:2011SZ0030)

Study on Radiation-induced Grafting of N-vinyl Pyrrolidone on Polyurethane

NI Maojun1,WANG Chunlei2,WANG Jingxia1,CHEN Yuheng1,CHEN Zhuping1*   

  1. 1.  Sichuan Institute of Atomic Energy, Chengdu 610101,China;
    2.  Suzhou Nuclear East China Irradiation Co, LTD, Suzhou 215200,China
  • Received:2012-08-10 Revised:2012-09-24 Online:2013-01-26 Published:2020-11-12

摘要: 利用60Co-γ辐照接枝技术,在医用聚氨醋弹性体(TPU)表面接枝亲水性N一乙烯基毗咯烷酮(NVP),制备了TPU-g-PVP接枝共聚物。通过傅里叶变换红外光谱和扫面电子显微镜表征了接枝共聚物结构,研究了吸收剂量、溶剂组成、单体浓度和介质pH值对共聚物接枝率的影响。结果表明,在一定条件下,随着吸收剂量和单体浓度的增大,共聚物接枝率逐渐增大;当溶剂中乙醇含量为60%(体积分数,下同)时,接枝效率最高;在中性和碱性条件下,NVP接枝率较高。亲水性及润滑性能测试表明,接枝改性后,材料的亲水性和润滑性随着接枝率的增大显著提高。接枝体系最仕工艺条件为:乙醇含量60%,pH值为7,NVP浓度20%、吸收剂量为10kGy、体系接枝率为20%。

关键词: γ辐射接枝, 聚氨酯, N一乙烯基毗咯烷酮, 亲水性, 润滑性

Abstract: NVP was grafted onto surface of polyurethane to prepare TPU-g-PVP copolymer by 60Co-γ irradiation. Fourier transform infrared spectroscopy(FT-IR) and scanning electron microscope(SEM)were used to characterize the copolymer structure, and the absorbed dose,solvent composition,NVP content,and the solution pH value were studied. It showed that the grafting ratio of the copolymer increased with increasing radiation dose and NVP content,it had a higher grafting ratio with ethanol content of 60%in neutral and alkaline conditions. Hydrophilic and lubrication performance test showed that the hydrophilicity and luhricity of the copolymer increased significantly with increasing grafting ratio. The optimum process conditions for this system were: ethanol 60%,pH 7,NVP 20%,and irradiation dosel0 kGy, the grafting ratio may reached 20%.

Key words: γ irradiation grafting;polyurethane, N-vinyl pyrrolidone, hydrophilicity, luhricity

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