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Thickness Dependence of Surface Chain Conformation in Poly(methyl methacrylate) Films Investigated by Sum Frequency Generation Vibrational Spectroscopy

文献类型：期刊论文

作者Xu, Jianquan1; Bao, Senyang1; Jiang, Zhenwei1; Li, Bolin3; Han, Xiaofeng2; Wang, Xinping1
刊名MACROMOLECULES
出版日期2024-06-20
ISSN号0024-9297
DOI10.1021/acs.macromol.4c00792
通讯作者Wang, Xinping(wxinping@zstu.edu.cn)
英文摘要To explore the substrate effect on chain conformation, sum frequency generation vibrational spectroscopy was used to investigate the variation in the surface structure of a supported poly(methyl methacrylate) film with different thicknesses of the polymer film (h) and adsorbed layer (h( ads)). The average local chain conformation at the surface was employed as a phenomenological marker and described by a chain arc model. With the decreasing of h, the surface conformation approached from the unperturbed surface conformation to that of adsorbed chains, which indicated the existence of a conformation gradient near the substrate. It was also found that the distance of chain conformation perturbed by the substrate effect was dependent on the formation of an irreversible adsorption layer and increased linearly with h( ads). This linear dependence is consistent with the correlation between the propagation distance of the substrate effect on chain mobility and h( ads); therefore, the conformation gradient may be the probable origin of the long-range substrate effect.
WOS关键词GLASS-TRANSITION TEMPERATURE ; IRREVERSIBLE ADSORPTION ; MOLECULAR-ORIENTATION ; STATISTICAL-THEORY ; POLYSTYRENE ; SUBSTRATE ; DYNAMICS ; MOBILITY ; INTERFACES ; DIFFUSION
资助项目National Natural Science Foundation of China[22161160317] ; National Natural Science Foundation of China[22173081] ; National Natural Science Foundation of China[22203075] ; National Natural Science Foundation of China[22203097] ; National Natural Science Foundation of China[21062110-Y] ; Foundation of Zhejiang Sci-Tech University
WOS研究方向Polymer Science
语种英语
WOS记录号WOS:001252911500001
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of Zhejiang Sci-Tech University
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/136545]  
专题中国科学院合肥物质科学研究院
通讯作者Wang, Xinping
作者单位1.Zhejiang Sci Tech Univ, Sch Chem & Chem Engn, Key Lab Surface & Interface Sci Polymer Mat Zhejia, Hangzhou 310018, Peoples R China
2.Southeast Univ, Sch Biol Sci & Med Engn, State Key Lab Digital Med Engn, Nanjing 210096, Peoples R China
3.Chinese Acad Sci, Anhui Key Lab Condensed Matter Phys Extreme Condit, High Magnet Field Lab, HFIPS, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Jianquan,Bao, Senyang,Jiang, Zhenwei,et al. Thickness Dependence of Surface Chain Conformation in Poly(methyl methacrylate) Films Investigated by Sum Frequency Generation Vibrational Spectroscopy[J]. MACROMOLECULES,2024.
APA Xu, Jianquan,Bao, Senyang,Jiang, Zhenwei,Li, Bolin,Han, Xiaofeng,&Wang, Xinping.(2024).Thickness Dependence of Surface Chain Conformation in Poly(methyl methacrylate) Films Investigated by Sum Frequency Generation Vibrational Spectroscopy.MACROMOLECULES.
MLA Xu, Jianquan,et al."Thickness Dependence of Surface Chain Conformation in Poly(methyl methacrylate) Films Investigated by Sum Frequency Generation Vibrational Spectroscopy".MACROMOLECULES (2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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