Influences of poly (vinyl alcohol) molecular weight and carbon nanotubes on radiation crosslinking shape memory polymers

作     者：Aamer A.M.Alfayyadh S.Lotfy A.A.Basfar Mutasim I.Khalil 

作者机构：Radiation Technology CenterNuclear Science Research InstituteKing Abdulaziz City for Science and Technology(KACST) Polymer Chemistry DepartmentNational Center for Radiation Research and TechnologyAtomic Energy Authority Department of ChemistryFaculty of ScienceKing Saud University 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2017年第27卷第3期

页      面：316-325页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：KACST(KACST ASTP-09)for funding this project 

主　　题：Shape memory polymers Radiation Poly(vinyl alcohol) Nanocomposite materials 

摘      要：Polyvinyl alcohol（PVA） of two molecular weights was used to prepare shape memory polymers based on chemical-crosslinking by *** chemical-crosslinking was done in the presence of 2-carboxyethvl acrylate oligomers（CEA） and nano-filler[multi-wall carbon nanotubes（MWCNT） and functionalized carbon nanotubes（MWCNT-NH;）]followed by radiation-induced *** analysis of the material revealed an increase in the gel fraction and a significant reduction in swelling of the nanocomposite material that was crosslinked with both glutaraldehyde and ionizing *** radiation crosslinked nanocomposites demonstrated approximately a 90%gelation over a range of 50-300 kGy irradiation *** scanning electron microscopy（SEM） analysis showed a homogeneous distribution of nanocomposites in the composite *** thermal properties of radiation crosslinked（PVA/CEA） and（PVA-CEA）-nano-fillers were investigated by a thermogravimetric analysis（TGA）.The mechanical properties were examined via dynamic mechanical analysis（DMA） which showed significant variation because of the addition of *** radiation crosslinked materials show good shape memory behavior that may be useful in many applications based on the range of temperatures at which Tan 8 appears.