Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface
The aggregation behavior of three tadpole-shaped Polyhedral oligomeric silsesquioxane (POSS) based block copolymers using different blocks poly(methyl methacrylate) (PMMA) and poly(trifluoroethyl methacrylate) (PTFEMA) with different block sequence and ratio (POSS-PTFEMA161-b-PMMA236, POSS-PMMA277-b...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2018/3787843 |
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| author | Lin Zhu Fang Chen Xiaoyan Ma Xiu Qiang Zhiguang Li Chen Dong Duyang Zang |
| author_facet | Lin Zhu Fang Chen Xiaoyan Ma Xiu Qiang Zhiguang Li Chen Dong Duyang Zang |
| author_sort | Lin Zhu |
| collection | DOAJ |
| description | The aggregation behavior of three tadpole-shaped Polyhedral oligomeric silsesquioxane (POSS) based block copolymers using different blocks poly(methyl methacrylate) (PMMA) and poly(trifluoroethyl methacrylate) (PTFEMA) with different block sequence and ratio (POSS-PTFEMA161-b-PMMA236, POSS-PMMA277-b-PTFEMA130, and POSS-PMMA466-b-PTFEMA172) was investigated on the air-water interface. The interfacial rheology of three block copolymers was studied by surface pressure isotherm, compression modulus measurements, and compression and expansion hysteresis analysis on the Langmuir trough. The block sequence and ratio play a great role in self-assembly behavior at the interface. Based on surface pressure isotherm analysis, a thin film with low elasticity was achieved for the POSS-PTFEMA161-b-PMMA236. Moreover, for the block copolymer with same segment sequence (POSS-PMMA2-b-PTFEMA), the thin film compression capability is increased with increasing the PMMA ratio. The morphology of the deposited LB thin film was illustrated by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). We observed that a thin film was composed by crater-shaped quasi-2D micelles for POSS-PTFEMA-b-PMMA, while it was proved that only flaky texture was observed for both POSS-PMMA277-b-PTFEMA130 and POSS-PMMA466-b-PTFEMA172. The thickness and area of flaky aggregates were greatly related to PMMA ratio. The different interface self-assembly structure evolution was proposed based on the interfacial rheology and thin film morphology studies. |
| format | Article |
| id | doaj-art-2e9f9e1014d641cbb62cf869a6ed56e5 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-2e9f9e1014d641cbb62cf869a6ed56e52025-02-03T07:24:59ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242018-01-01201810.1155/2018/37878433787843Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water InterfaceLin Zhu0Fang Chen1Xiaoyan Ma2Xiu Qiang3Zhiguang Li4Chen Dong5Duyang Zang6Research & Development Institute, Northwestern Polytechnical University, Shenzhen, ChinaResearch & Development Institute, Northwestern Polytechnical University, Shenzhen, ChinaResearch & Development Institute, Northwestern Polytechnical University, Shenzhen, ChinaKey Laboratory of Polymer Science and Technology, Shaanxi Province, School of Science, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Polymer Science and Technology, Shaanxi Province, School of Science, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Polymer Science and Technology, Shaanxi Province, School of Science, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi’an 710072, ChinaThe aggregation behavior of three tadpole-shaped Polyhedral oligomeric silsesquioxane (POSS) based block copolymers using different blocks poly(methyl methacrylate) (PMMA) and poly(trifluoroethyl methacrylate) (PTFEMA) with different block sequence and ratio (POSS-PTFEMA161-b-PMMA236, POSS-PMMA277-b-PTFEMA130, and POSS-PMMA466-b-PTFEMA172) was investigated on the air-water interface. The interfacial rheology of three block copolymers was studied by surface pressure isotherm, compression modulus measurements, and compression and expansion hysteresis analysis on the Langmuir trough. The block sequence and ratio play a great role in self-assembly behavior at the interface. Based on surface pressure isotherm analysis, a thin film with low elasticity was achieved for the POSS-PTFEMA161-b-PMMA236. Moreover, for the block copolymer with same segment sequence (POSS-PMMA2-b-PTFEMA), the thin film compression capability is increased with increasing the PMMA ratio. The morphology of the deposited LB thin film was illustrated by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). We observed that a thin film was composed by crater-shaped quasi-2D micelles for POSS-PTFEMA-b-PMMA, while it was proved that only flaky texture was observed for both POSS-PMMA277-b-PTFEMA130 and POSS-PMMA466-b-PTFEMA172. The thickness and area of flaky aggregates were greatly related to PMMA ratio. The different interface self-assembly structure evolution was proposed based on the interfacial rheology and thin film morphology studies.http://dx.doi.org/10.1155/2018/3787843 |
| spellingShingle | Lin Zhu Fang Chen Xiaoyan Ma Xiu Qiang Zhiguang Li Chen Dong Duyang Zang Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface Advances in Condensed Matter Physics |
| title | Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface |
| title_full | Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface |
| title_fullStr | Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface |
| title_full_unstemmed | Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface |
| title_short | Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface |
| title_sort | tadpole shaped poss based copolymers and the aggregation behavior at air water interface |
| url | http://dx.doi.org/10.1155/2018/3787843 |
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