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近红外光诱导硫醇-环氧逐步光聚合研究

杨天庆 皮玉红 罗静 刘仁

杨天庆, 皮玉红, 罗 静, 等. 近红外光诱导硫醇-环氧逐步光聚合研究[J]. 功能高分子学报,2022,35(3):1-6 doi: 10.14133/j.cnki.1008-9357.20210829001
引用本文: 杨天庆, 皮玉红, 罗 静, 等. 近红外光诱导硫醇-环氧逐步光聚合研究[J]. 功能高分子学报,2022,35(3):1-6 doi: 10.14133/j.cnki.1008-9357.20210829001
YANG Tianqing, PI Yuhong, LUO Jing, LIU Ren. Study on Near-Infrared Light Induced Thiol-Epoxy Step Photopolymerization[J]. Journal of Functional Polymers. doi: 10.14133/j.cnki.1008-9357.20210829001
Citation: YANG Tianqing, PI Yuhong, LUO Jing, LIU Ren. Study on Near-Infrared Light Induced Thiol-Epoxy Step Photopolymerization[J]. Journal of Functional Polymers. doi: 10.14133/j.cnki.1008-9357.20210829001

近红外光诱导硫醇-环氧逐步光聚合研究

doi: 10.14133/j.cnki.1008-9357.20210829001
基金项目: 国家自然科学基金(51673086)
详细信息
    作者简介:

    杨天庆(1997—),女,硕士研究生,研究方向为近红外光固化3D打印。E-mail:6190609008@stu.jiangnan.edu.cn

    通讯作者:

    刘 仁,E-mail:liuren@jiangnan.edu.cn

  • 中图分类号: TB34

Study on Near-Infrared Light Induced Thiol-Epoxy Step Photopolymerization

  • 摘要: 基于上转换材料辅助近红外光聚合技术,开展了近红外(NIR)光诱导硫醇-环氧逐步光聚合的研究。通过红外热成像仪监测了聚合体系的温度变化,利用实时红外测定近红外光辐照下巯基和环氧基的反应速率,采用凝胶渗透色谱表征了所得聚合物的分子量。结果表明,在近红外光辐照下上转换粒子发出紫外-可见光,引发光产碱剂光解产生碱性物质,在近红外光的光-热协同效应下,催化硫醇-环氧体系发生逐步聚合。

     

  • 图  1  NIR光诱导硫醇-环氧逐步光聚合

    Figure  1.  NIR light induced thiol-epoxy photo step photopolymerization

    图  2  TX-TBD的核磁共振氢谱图

    Figure  2.  1H-NMR spectrum of TX-TBD

    图  3  UCPs激发波长及TX-TBD吸收波长匹配图

    Figure  3.  Matching diagram of UCPs excitation wavelength with TX-TBD absorption wavelength

    图  4  TX-TBD甲醇溶液的pH随辐照时间的变化曲线

    Figure  4.  pH value change of TX-TBD in methanol under NIR irradiation

    图  5  硫醇-环氧逐步光聚合时间随温度变化曲线

    Figure  5.  Curves of temperature versus NIR irradiation time during thiol-epoxy step photopolymerization

    图  6  NIR光辐照下巯基及环氧基转化率

    Figure  6.  Conversion of thiol group and epoxy group under NIR irradiation

    图  7  硫醇-环氧逐步光聚合重均分子量随时间变化曲线

    Figure  7.  Curve of molecular weight versus NIR irradiation time during thiol-epoxy step photopolymerization

    图  8  开-关灯下巯基的转化率

    Figure  8.  Conversion of thiol group under light on-off

    表  1  光聚合条件对硫醇 环氧近红外光逐步聚合的影响

    Table  1.   Effect of photopolymerization conditions on NIR induced step polymerization of thiol-epoxy

    Samplec(TX-TBD)/
    (mol·L-1)
    ρ(UCPs)/
    (g·L-1)
    Conversion rate/
    (%)
    Mw
    17×10-2-0-
    2-620-
    37×10-26242.68000
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-08-29
  • 录用日期:  2021-11-29
  • 网络出版日期:  2021-12-07

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