首页|紫外辐照与壳聚糖接枝联合处理对ABS表面改性效果的影响

紫外辐照与壳聚糖接枝联合处理对ABS表面改性效果的影响

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聚丙烯腈-丁二烯-苯乙烯(ABS)是一种应用广泛的工程塑料.将绿色环保的紫外光辐照表面修饰技术与壳聚糖接枝处理技术相结合对ABS基板表面进行改性处理,探究了紫外光辐照条件、壳聚糖醋酸溶液的浓度、改性温度和改性时间对ABS基板表面形貌、表面粗糙度、表面亲水性和表面化学性质的影响.首先使用2 g/L的二氧化钛(TiO2)作为光催化剂在300 W下对ABS进行光辐照处理30 min,然后利用0.75 g/L的壳聚糖醋酸溶液在70℃下改性处理30 min,通过扫描电镜(SEM)、原子力显微镜(AFM)观察ABS基板表面形貌变化,并利用表面接触角测量仪和X射线光电子能谱(XPS)分析ABS基板表面亲水性能的变化.结果表明,经过紫外光辐照和壳聚糖接枝改性处理后,ABS基板处理后表面形成少量微小孔洞,表面粗糙度较小,但是ABS基板表面亲水基团的浓度大幅增加,表面亲水性明显增强,化学镀铜层光滑平整,颜色粉红,具有金属光泽.
Effects of Ultraviolet Irradiation and Chitosan Grafting Combined Treatment on the Surface Modification of ABS
Polyacrylonitrile-butadiene-styrene (ABS) is a widely used engineering plastic. In this study, the surface of the ABS substrate was modified by combining green UV irradiation surface modification technology with chitosan grafting technology. The effects of ultraviolet irradia-tion conditions, concentration of chitosan acetate solution, modification temperature and modification time on the ABS substrate surface mor-phology, roughness, hydrophilicity and chemical properties were investigated. Firstly, the ABS was irradiated at 300 W for 30 min by using 2 g/L titanium dioxide (TiO2)as a photocatalyst, and then it was modified with a 0.75 g/L chitosan acetic acid solution at 70℃ for 30 min. The surface morphology change of the ABS substrate was observed using scanning electron microscopy (SEM)and atomic force microscopy (AFM) , and the hydrophilicity change of the ABS substrates surface was analyzed using a surface contact angle measuring instrument and X-ray photoelectron spectroscopy (XPS) . Results showed that after UV irradiation and chitosan grafting modification, the ABS substrate surface developed a small number of tiny holes, exhibited low surface roughness, and displayed a significant increase in the concentration of hydrophil-ic groups. Consequently, the surface hydrophilicity was significantly enhanced. Furthermore, the electroless copper plating layer appeared smooth, with a pink color and metallic luster.

ultraviolet irradiationchitosan graftingsurface modification of ABS substrateselectroless plating

刘欣、赵文霞、李东萍、柳芸、陈怀军、李鑫巍、回凯宏、赵伟、宋一凡、闫亚妮、朱倩

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宁夏师范学院化学化工学院,宁夏 固原 756000

宁夏回族自治区绿色催化材料与技术重点实验室,宁夏 固原 756000

西安航天城第四小学,陕西 西安 710199

紫外辐照 壳聚糖接枝 ABS基板表面改性 化学镀

国家自然科学基金宁夏回族自治区自然科学基金宁夏回族自治区自然科学基金宁夏回族自治区自然科学基金宁夏留学人员回国创新创业项目宁夏回族自治区科技创新领军人才项目宁夏新型高校智库项目六盘山资源工程技术研究中心项目六盘山资源工程技术研究中心项目无机化学重点学科建设项目宁夏师范学院重点科研项目

215610272023AAC033402023AAC033262022AAC03298宁人社函[2024]4号KJT2016004宁教工委办[2018]12号HGZD22-18HGZD23-09[2017]83XJZDD2321

2024

10.16577/j.issn.1001-1560.2024.0111

材料保护
武汉材料保护研究所,中国腐蚀与防护学会 中国表面工程协会

材料保护

CSTPCD
影响因子：1.129
ISSN：1001-1560
年,卷(期)：2024.57(5)
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