有机插层改性LDH增强PP材料的紫外屏蔽性能  

Organic intercalation modified LDH for enhanced UV shielding properties of PP materials

作　　者：刘诺 颜婷婷[1] 曾倩茹 李素英[1] 张伟[1] 张瑜[1] 张海峰 LIU Nuo;YAN Tingting;ZENG Qianru;LI Suying;ZHANG Wei;ZHANG Yu;ZHANG Haifeng(College of Textile and Clothing,Nantong University,Nantong 226019,Jiangsu,China)

机构地区：[1]南通大学纺织服装学院,江苏南通226019

出　　处：《上海纺织科技》2022年第12期56-60,共5页Shanghai Textile Science & Technology

基　　金：江苏省研究生科研与实践创新计划项目(KYCX21_3092);江苏高校“青蓝工程”资助;南通大学大型仪器开放基金资助(KFJN2240);江苏省高等学校基础科学(自然科学)研究项目资助(22KJB540003)。

摘　　要：分别采用煅烧再生法(Calcination reduction)和离子交换法(Ion exchange)对工业MgAl-CO_(3)-LDH进行有机改性,构筑了CA@LDH-cr、CA@LDH-ie这两种肉桂酸插层层状双金属氢氧化物(LDH)。借助XRD、SEM、FTIR、UV-Vis和TG等表征手段对LDH的晶型结构、表观形貌、物质组成、紫外吸收性能及热稳定性进行了表征对比,进一步将其与PP材料熔融共混,并对复合材料的紫外屏蔽性能进行了评价。结果表明,通过煅烧再生法和离子交换法,工业MgAl-CO_(3)-LDH层板间的CO_(3)^(2-)成功地被肉桂酸根取代,且离子交换法改性的CA@LDH-ie晶型结构更完整,紫外吸收能力更好,由其制备的PP复合材料具有很强的紫外屏蔽性能。The industrial hydrotalcite MgAl-CO_(3)-LDH is organically modified by ion exchange and calcination reduction, respectively, and two kinds of CA intercalated hydrotalcites, CA@LDH-ie and CA@LDH-cr are constructed. By means of XRD, SEM, FTIR, UV-Vis and TG, the crystal structure, apparent morphology, material composition, UV absorption performance and thermal stability of the two LDHs are compared and characterized. It is further melt blended with PP material, and the UV shielding properties of the composite are evaluated. The results show that the CO_(3)^(2-) between the layers of industrial hydrotalcite is successfully replaced by cinnamate by ion exchange and calcination regeneration. Moreover, CA@LDH-ie modified by ion exchange method has more complete crystal structure and better UV absorption ability, and the prepared PP composites has strong UV shielding properties.

关 键 词：改性 肉桂酸 煅烧再生 离子交换 层状双金属氢氧化物 紫外屏蔽 

分 类 号：TS101.923[轻工技术与工程—纺织工程]