Isothermal crystallization of polypropylene/surface modified silica nanocomposites
文献类型：期刊论文
| 作者 | Tang, Hanying1,2,3,4; Dong, Quanxiao5; Liu, Peng1,2,3; Ding, Yanfen1,2,3; Wang, Feng1,2,3; Gao, Chong4; Zhang, Shimin1,2,3; Yang, Mingshu1,2,3 |
| 刊名 | SCIENCE CHINA-CHEMISTRY
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 59期号:10页码:1283-1290 |
| 关键词 | composites silica DOPO crystallization grafting |
| 英文摘要 | In the present work, 3-methacryloxypropyltrimethoxy-silane silanized silica (SiO2-WD70) and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide immobilized silica (SiO2-WD70-DOPO) nanoparticles were prepared. Silica, SiO2-WD70 and SiO2-WD70-DOPO were incorporated into polypropylene (PP) by melt compounding. Differential scanning calorimetry (DSC), X-ray diffraction (XRD) and polarized optical microscopy (POM) were employed to investigate the isothermal crystallization behavior of PP and PP/silica composites. The kinetic constant (k (n) ), and half crystallization time (t (1/2)) were calculated by Avrami equation, while the surface free energy of folding was calculated by Lauritzen-Hoffman theory. The increased k (n) , decreased t (1/2) and the surface free energy (sigma (e)) in the order of PP, PP/SiO2, PP/SiO2-WD70 and PP/SiO2-WD70-DOPO nanocomposites were attributed to the surface modification of silica. XRD indicated that SiO2-WD70-DOPO addition had no effect on PP crystal structure but accelerated the crystallization rate. POM determined that SiO2-WD70-DOPO addition promoted the nucleation of PP by inducing a higher nucleation density during isothermal conditions. The surface modified nanoparticle SiO2-WD70-DOPO might find possible application as a new type of inorganic nano-sized nucleation agent for PP. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35632]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.China Acad Railway Sci, State Key Lab Track Technol High Speed Railway, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Hanying,Dong, Quanxiao,Liu, Peng,et al. Isothermal crystallization of polypropylene/surface modified silica nanocomposites[J]. SCIENCE CHINA-CHEMISTRY,2016,59(10):1283-1290. |
| APA | Tang, Hanying.,Dong, Quanxiao.,Liu, Peng.,Ding, Yanfen.,Wang, Feng.,...&Yang, Mingshu.(2016).Isothermal crystallization of polypropylene/surface modified silica nanocomposites.SCIENCE CHINA-CHEMISTRY,59(10),1283-1290. |
| MLA | Tang, Hanying,et al."Isothermal crystallization of polypropylene/surface modified silica nanocomposites".SCIENCE CHINA-CHEMISTRY 59.10(2016):1283-1290. |
入库方式： OAI收割
来源：化学研究所
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