香豆素衍生物基荧光型水性聚氨酯的制备及性能

doi:10.16085/j.issn.1000-6613.2015.11.028

化工进展 ›› 2015, Vol. 34 ›› Issue (11): 4001-4005,4013.DOI: 10.16085/j.issn.1000-6613.2015.11.028

香豆素衍生物基荧光型水性聚氨酯的制备及性能

李朦¹, 强西怀^1,2, 薛强³

1 陕西科技大学化学与化工学院, 陕西西安 710021;
2 陕西科技大学资源与环境学院, 陕西西安 710021;
3 浙江传化股份有限公司, 浙江杭州 311215

收稿日期:2015-02-06 修回日期:2015-03-20 出版日期:2015-11-05 发布日期:2015-11-05
通讯作者: 强西怀,教授。E-mailqiangxihuai@163.com。
作者简介:李朦(1990—),男,硕士研究生,主要从事精细化学品的合成研究。
基金资助:
陕西科技大学创新科研团队(TD12-04)及陕西科技大学研究生创新基金项目。

Synthesis and properties of AFC-based waterborne polyurethane

LI Meng¹, QIANG Xihuai^1,2, XUE Qiang³

1 College of Chemistry and Chemical Engineering, Shaanxi University of Science &Technology, Xi'an 710021, Shaanxi, China;
2 College of Resources and Environment, Shaanxi University of Science &Technology, Xi'an 710021, Shaanxi, China;
3 Zhejiang Transfar Group Co., Ltd., Hangzhou 311215, Zhejiang, China

Received:2015-02-06 Revised:2015-03-20 Online:2015-11-05 Published:2015-11-05

摘要/Abstract

摘要： 采用“一步法”,以异佛尔酮二异氰酸酯(IPDI)、聚己二酸新戊二醇酯(PNGA)、二羟甲基丙酸(DMPA)为原料,用荧光剂7-氨基-4-三氟甲基香豆素(AFC)对预聚体进行封端,在IPDI、PNGA、DMPA、AFC摩尔比为1:0.45:0.30:0.15条件下,制备出一种具有长期贮存稳定性的新型荧光型水性聚氨酯乳液(WPU-AFC)。其结构通过FTIR和UV证实;同时系统地讨论了空间位阻,温度以及AFC含量等因素对乳液荧光性能的影响。结果表明,制备的WPU-AFC的荧光强度主要受“结构荧光猝灭”影响而不是“浓度荧光猝灭”影响;随着温度的升高,WPU-AFC和AFC的荧光强度均降低;相同条件下,WPU-AFC的荧光强度与AFC相比均有明显增强;此外,随着AFC分子中苯并吡喃环刚性结构在聚氨酯主链的引入,胶膜的热稳定性明显提高。

关键词: 水性聚氨酯, 7-氨基-4三氟甲基香豆素, 荧光强度

Abstract: The one-pot synthesis of the WPU-AFC fluorescent emulsion, very stable for long-term storage, was realized, based on IPDI, PNGA and DMPA, with blocking by fluorescent agent 7-amino-4-(trifluoromethyl)coumarin (AFC). The mole ratio of IPDI:PNGA:DMPA:AFC is 1:0.45: 0.30:0.15. The structure of WPU-AFC was confirmed by Fourier transform infrared spectroscopy (FTIR) and UV-visible absorption spectroscopy. The influence of stereohindrance, temperature and AFC content was thoroughly investigated. It was found that the fluorescence intensity of AFC was not originated from the so-called “concentrational self-quenching effect”, which could result from the “structural self-quenching effect”. The fluorescence intensity of WPU-AFC decreased with the increasing temperature, and was enhanced compared with that of AFC. In addition, the improved thermal stability of WPU-AFC was attributed to the incorporation of benzopyrone units in the preformed urethane groups.

Key words: waterborne polyurethane, 7-amino-4-(trifluoromethyl)coumarin, fluorescence intensity

中图分类号:

TQ630.4

李朦, 强西怀, 薛强. 香豆素衍生物基荧光型水性聚氨酯的制备及性能[J]. 化工进展, 2015, 34(11): 4001-4005,4013.

LI Meng, QIANG Xihuai, XUE Qiang. Synthesis and properties of AFC-based waterborne polyurethane[J]. Chemical Industry and Engineering Progree, 2015, 34(11): 4001-4005,4013.

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香豆素衍生物基荧光型水性聚氨酯的制备及性能

Synthesis and properties of AFC-based waterborne polyurethane

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