聚丙烯酰胺/壳聚糖/二氧化硅水凝胶亲水疏油筛网的制备与性能

赖智荣; 熊浚翔; 黄蓓; 曹峥; 成骏峰; 刘春林

doi:10.14135/j.cnki.1006-3080.20220704002

聚丙烯酰胺/壳聚糖/二氧化硅水凝胶亲水疏油筛网的制备与性能

doi: 10.14135/j.cnki.1006-3080.20220704002

赖智荣^1,,
熊浚翔¹,
黄蓓¹,
曹峥^{1, 2, ,},
成骏峰¹,
刘春林^{1, 2}

1.
常州大学材料科学与工程学院, 材料科学与工程国家级实验教学示范中心, 江苏常州 213164
2.
常州大学怀德学院, 江苏靖江 214500

基金项目: 国家自然科学基金（21704008）；江苏省高等学校自然科学研究重大项目(20KJA430011)；江苏省研究生科研创新计划（KYCX22_3006）

详细信息

作者简介:
赖智荣（1997-），男，江西赣州人，硕士生，主要研究方向为高分子功能材料。E-mail：497003169@qq.com

通讯作者:
曹　峥， E-mail：zcao@cczu.edu.cn

中图分类号: O63
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- 被引次数: 0
出版历程
- 收稿日期: 2022-07-04
- 网络出版日期: 2022-08-31

Preparation and Performance of Hydrophilic and Oleophobic Mesh Modifed with Polyacrylamide/Chitosan/SiO₂ Hydrogel

1.
National Experimental Demonstration Center for Materials Science and Engineering, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
2.
Changzhou University Huaide College, Jingjiang 214500, Jiangsu, China

摘要

摘要: 使用1064 nm近红外激光对不锈钢筛网（SSM）进行表面刻蚀，通过调节激光器参数得到表面粗糙度最佳的不锈钢筛网。相较于传统化学刻蚀耗费化学试剂与产生废液废气等环境污染问题，激光刻蚀工艺简单，具有过程可控、快速高效以及安全环保的优势。以激光刻蚀的SSM为基体，壳聚糖（CS）为亲水组分，丙烯酰胺（AM）为单体，将不同含量的二氧化硅（SiO₂）分散到体系中，加入光引发剂，以N,N’-亚甲基双丙烯酰胺（MBA）为交联剂，利用紫外光引发自由基聚合制备水下超疏油油水分离复合筛网PAM/CS/SiO₂@SSM。利用激光扫描共聚焦显微镜（CLSM）、扫描电镜（SEM）、傅里叶变换红外光谱（FT-IR）等测试方法对PAM/CS/SiO₂@SSM进行表征，研究了不同CS组分和不同SiO₂添加量对复合筛网表面粗糙度的影响；采用重力驱动的方法分离油水混合物并研究了复合筛网的油水分离效率。实验结果表明激光刻蚀筛网具有工艺简单、刻蚀快速且参数可控的优势；制备的PAM/CS/SiO₂@SSM分离筛网水下油接触角为155°，具有良好的亲水疏油性能；分别对液体石蜡、正己烷和石油醚3种不同的油水混合物进行油水分离实验，实验结果表明复合筛网对3种油品的分离效率分别为99.1%、98.8%和98.4%，具有高油水分离效率。
- 丙烯酰胺 /
- 壳聚糖 /
- 二氧化硅 /
- 激光刻蚀 /
- 油水分离
Abstract: The stainless steel mesh (SSM) is laser etched with a 1064 nm near-infrared laser, and the stainless steel screen with the best surface roughness is obtained by adjusting the laser parameters. Compared with the traditional chemical etching consumption of chemical reagents and environmental pollution problems, the laser etching process is simple, with the advantages of process controllability, fast and efficient, safety and environmental protection. Using the laser-etched SSM as the matrix, chitosan (CS) as the hydrophilic component, acrylamide (AM) as a monomer, and then different contents of silica (SiO₂) dispersed into the system, the photoinitiator was added, N,N'-methylenebisacrylamide (MBA) as the crosslinker, the underwater superoleophobic oil-water separation membrane (PAM/CS/SiO₂@SSM) was prepared by ultraviolet light initiated radical polymerization. Laser scanning confocal microscopy (CLSM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and other test methods were used for the characterization of PAM/CS/SiO₂@SSM separation mesh, and the effects of different CS components and different SiO₂ additions on the surface roughness of composite mesh were studied. Gravity-driven method was used to separate the oil-water mixture, and the oil-water separation efficiency of the composite mesh was explored. The experimental results show that the laser etch mesh has the advantages of simple process, fast etching and controllable parameters; the underwater oil contact angle of the prepared PAM/CS/SiO₂@SSM separation mesh can reach 155°, indicating the excellent hydrophilicity and oleophobicity; The separation efficiency of the composite mesh for three different oil-water mixtures including liquid paraffin, n-hexane, and petroleum ether can be reached 99.1%, 98.8% and 98.4%, respectively, indicating a high oil-water separation efficiency.
- Acrylamide /
- Chitosan /
- Silicon dioxide /
- Laser etching /
- oil-water separation

HTML全文

图 1 PAM/CS/SiO₂水凝胶和PAM/CS/SiO₂@SSM复合筛网的制备

Figure 1. Preparation of PAM/CS/SiO₂ hydrogel and PAM/CS/SiO₂@SSM composite mesh

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图 2 不同激光刻蚀参数形成的不锈钢筛网表面图

Figure 2. Surface diagram of metal mesh formed by different laser etching parameters

a—SSM; b—SSM-4; c—SSM-6; d—SSM-8; e—SSM-200; f—SSM-300; g—SSM-400; h—SSM-500; i—SSM-0.01; j—SSM-0.02；k—SSM-0.03; l—SSM-0.04

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图 3 不同激光参数刻蚀后不锈钢筛网的扫描电镜图

Figure 3. Scanning electron microscopy of metal mesh after etching of different laser parameters

a—SSM; b—SSM-4; c—SSM-6; d—SSM-8; e—SSM-200; f—SSM-300; g—SSM-400; h—SSM-500; i—SSM-0.01; j—SSM-0.02; k—SSM-0.03; l—SSM-0.04

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图 4 样品的红外光谱图

Figure 4. FT-TR spectra of samples

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图 5 复合筛网和水凝胶的扫描电镜图

Figure 5. Scanning electron microscopy of composite mesh and hydrogels

a—PAM/CS@SSM; b—PAM/CS@SSM; c—PAM/CS hydrogel; d—PAM/CS/SiO₂@SSM; e—PAM/CS/SiO₂@SSM; f—PAM/CS/SiO₂ hydrogel

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图 6 不同样品的激光共聚焦图像（a~d）与样品表面粗糙度柱状图（e）

Figure 6. (a-d) laser confocal image of the sample and (e) sample surface roughness histogram

a—PAM/0.1 g CS@SSM; b—PAM/0.1 g CS/SiO₂@SSM; c—PAM/0.15 g CS@SSM; d—PAM/0.15 g CS/SiO₂@SSM

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图 7 (a)不同CS含量复合筛网的水下油接触角柱状图；(b)添加不同SiO₂含量的复合筛网的水下油接触角柱状图

Figure 7. (a) Underwater oil contact angle histogram of composite meshs with different CS content and (b) underwater oil contact angle histogram of composite meshs with different SiO₂ content added

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图 8 (a) 循环次数对油水分离效率的影响（液体石蜡与水体积比1∶1）；(b)不同油品（油水体积比1∶1）的油水分离效率

Figure 8. (a) Effect of cycle times on oil-water separation efficiency (liquid paraffin to water ratio 1∶1); (b) Oil-water separation efficiency of different oils (oil-water ratio 1∶1)

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表 1 激光刻蚀不锈钢筛网的工作参数

Table 1. Working parameters of laser etched stainless steel mesh

Sample name	Laser power/W	Line speed/(mm·s⁻¹)	Line spacing/mm
SSM	0	0	0
SSM-4	4	200	0.02
SSM-6	6	200	0.02
SSM-8	8	200	0.02
SSM-200	8	200	0.02
SSM-300	8	300	0.02
SSM-400	8	400	0.02
SSM-500	8	500	0.02
SSM-0.01	8	200	0.01
SSM-0.02	8	200	0.02
SSM-0.03	8	200	0.03
SSM-0.04	8	200	0.04

下载: 导出CSV

表 2 PAM/CS/SiO₂水凝胶实验配方表

Table 2. PAM/CS/SiO₂ hydrogel formulation experimental recipe

Sample	m/g
Sample	AM	CS	MBA	IRG2960	SiO₂
PAM/CS0.05 g @SSM	2.132	0.05	0.0005	0.021	0
PAM/CS0.10 g @SSM	2.132	0.10	0.0005	0.021	0
PAM/CS0.15 g @SSM	2.132	0.15	0.0005	0.021	0
PAM/CS0.20 g @SSM	2.132	0.20	0.0005	0.021	0
PAM/CS/SiO₂0.05@SSM	2.132	0.15	0.0005	0.021	0.05
PAM/CS/SiO₂0.10@SSM	2.132	0.15	0.0005	0.021	0.10
PAM/CS/SiO₂0.15@SSM	2.132	0.15	0.0005	0.021	0.15
PAM/CS/SiO₂0.20@SSM	2.132	0.15	0.0005	0.021	0.20

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