ICCAS OpenIR  > 工程塑料实验室
Interfacial effect on confined crystallization of poly(ethylene oxide)/silica composites
Zhao, Weiwei1; Su, Yunlan1; Gao, Xia1; Xu, Jianjun2; Wang, Dujin1
2016-02-01
Source PublicationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
Volume54Issue:3Pages:414-423
AbstractThe impact of nanoconfinement introduced by nanoparticles on polymer crystallization has attracted extensive attention because it plays an important role in the ultimate properties of polymer nanocomposites. In this study, interfacial and spatial confinement effects of silica (SiO2) nanoparticles on the crystallization behaviors of poly(ethylene oxide) (PEO)/SiO2 composites were systematically investigated by changing the size and concentration of SiO2 in PEO matrix. The composites with high silica loadings exhibit two crystallization peaks of PEO as determined by differential scanning calorimetry. The first peak at 7-43 degrees C is related to the bulk PEO, while the second peak at -20 to -30 degrees C is attributed to the restricted PEO segments. Three-layer (amorphous, interfacial, and bulk) model is proposed to interpret the confined crystallization of PEO/SiO2 composites, which is supported by the results of thermogravimetric analysis and solid-state H-1 nuclear magnetic resonance. In amorphous layer, most PEO segments are directly adsorbed on SiO2 surface via hydrogen bonding. The interfacial PEO layer, which is nonuniform, is composed of crystallizable loops and tails extending from amorphous layer. (c) 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 414-423
KeywordAdsorption Crystallization Confined Crystallization Interfaces Interfacial Effect Nanocomposites Nanoparticles Poly(Ethylene Oxide) Stober Silica
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/29423
Collection工程塑料实验室
Affiliation1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China
2.DSM Resolve, NL-6160 MD Gleen, Netherlands
Recommended Citation
GB/T 7714
Zhao, Weiwei,Su, Yunlan,Gao, Xia,et al. Interfacial effect on confined crystallization of poly(ethylene oxide)/silica composites[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2016,54(3):414-423.
APA Zhao, Weiwei,Su, Yunlan,Gao, Xia,Xu, Jianjun,&Wang, Dujin.(2016).Interfacial effect on confined crystallization of poly(ethylene oxide)/silica composites.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,54(3),414-423.
MLA Zhao, Weiwei,et al."Interfacial effect on confined crystallization of poly(ethylene oxide)/silica composites".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 54.3(2016):414-423.
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