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NCC负载纳米TiO2复合膜的表征
引用本文:杨少丽,刘志明,刘昕昕. NCC负载纳米TiO2复合膜的表征[J]. 纤维素科学与技术, 2014, 0(2): 35-39
作者姓名:杨少丽  刘志明  刘昕昕
作者单位:东北林业大学材料科学与工程学院,黑龙江哈尔滨150040
基金项目:国家自然科学基金资助项目(31070633);人力资源和社会保障部留学回国人员科技活动择优资助项目(07041311401);中央高校基本科研业务费专项资金资助(DL11EB01).
摘    要:采用交替沉积自组装的方法制备聚乙烯醇(PVA)/纳米纤维素(NCC)-纳米TiO2/PVA复合膜,用傅里叶变换红外光谱(FT-IR)和扫描电子显微镜(SEM)表征,结果表明PVA/NCC-纳米TiO2/PVA复合膜形貌规整,NCC负载纳米TiO2粒子只是物理共混,没有化学键合.性能分析结果表明PVA/NCC-纳米TiO2/PVA复合膜在紫外光区有较强吸收,较高的拉伸强度109.5 MPa,且比PVA膜热稳定性好,热分解温度提高约20℃.

关 键 词:纳米纤维素  交替沉积自组装  透光率

Characterization of NCC Loaded Nano-TiO2 Composite Membranes
YANG Shao-li,LIU Zhi-ming,LIU Xin-xin. Characterization of NCC Loaded Nano-TiO2 Composite Membranes[J]. Journal of Cellulose Science and Technology, 2014, 0(2): 35-39
Authors:YANG Shao-li  LIU Zhi-ming  LIU Xin-xin
Affiliation:( College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China)
Abstract:Polyvinyl alcohol (PVA)/nanocrystalline cellulose (NCC) -nanoTiO2/PVA composite membrane was prepared by alternating deposition self-assembly method. The results of fourier transform infrared (FTIR) and scanning electron microscopy (SEM) analysis showed that morphology of PVA/NCC-nanoTiO2/PVA composite membrane was regular and nano-TiO2 particles loaded by NCC of PVA/NCC-nanoTiO2/PVA composite membrane were just physical padding and did not involve chemical reaction. The results of performance analysis of PVA/NCC-nanoTiO2/PVA composite membrane showed that PVA/NCC-nanoTiO2/PVA composite membrane in ultraviolet region had strong absorption, high tensile strength (average109.5 MPa) and higher thermal stability than that of PVA membrane (thermal decomposition temperature increased about 20℃).
Keywords:nanocrystalline cellulose  alternating deposition self-assembly  transmittance
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