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| 二苯乙烯型荧光分子-水滑石复合光稳定剂的制备及性能 |
| Preparation and Properties of Stilbene-type Fluorescent Molecule-Hydrotalcite Composite Light Stabilizer |
| 收稿日期：2023-05-26 |
| DOI：10.11980/j.issn.0254-508X.2023.09.006 |
| 关键词: 复合光稳定剂 二苯乙烯 荧光增白剂 层状双金属氢氧化物 高得率浆 |
| Key Words:composite light stabilizer stilbene fluorescent brightener layered double hydroxide high yield pulp |
| 基金项目:陕西省教育厅重点实验室项目（20JS048）；陕西省高校科协青年人才托举计划项目（20200611）；陕西省科技厅自然科学基础研究计划项目（2021JQ-826）；渭南师范学院人才项目（20RC+9）；渭南师范学院校级教育教学改革研究项目（JG202156）。 |
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| 摘要:本研究利用共沉淀法将双三嗪二苯乙烯型荧光分子（FBs）插进水滑石（LDHs）层间，制备了一种高稳定性的荧光小分子插层LDHs复合光稳定剂（FBs-LDHs），评价其对高得率浆制备纸张的增白性能及光诱导返黄抑制作用。结果表明，LDHs可以有效地抑制FBs的光致异构现象，提高FBs-LDHs的荧光性能。48 h紫外老化后，FBs-LDHs涂布纸张的PC值较未涂布纸张低3.9，较FBs涂布纸张低3.0，说明FBs-LDHs能更好地抑制高得率浆纸张光致返黄。 |
| Abstract:In this study， a highly stable bis-triazine stilbene-type fluorescent molecule （FBs） intercalated layered double hydroxide （LDHs） composite light stabilizer （FBs-LDHs） was prepared via co-precipitation method， and its brightening performance and light-induced yellowing inhibition of paper prepared from high yield pulp were evaluated. The results showed that the LDHs could effectively inhibit the photo-isomerization of FBs and improve the fluorescence performance of FBs-LDHs. After 48 h of UV aging， the PC value of FBs-LDHs coated paper was 3.9 lower than that of uncoated paper， and 3.0 lower than that of FBs coated paper， indicating that FBs-LDHs could better inhibit the photo-return of yellowing of highyield pulp paper. |
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