Modification of nanosilica particles with hydrophobic modifier bis[3-(triethoxysilyl)propyl]tetrasulfide by using micro-injection in aqueous solutions.
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| Title: | Modification of nanosilica particles with hydrophobic modifier bis[3-(triethoxysilyl)propyl]tetrasulfide by using micro-injection in aqueous solutions. |
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| Authors: | Yu, Keyi1 (AUTHOR), Yang, Ling1 (AUTHOR), Wang, Jingyuan1 (AUTHOR), Zhu, Zirui1 (AUTHOR), Wang, Ting-Jie1 (AUTHOR) wangtj@tsinghua.edu.cn |
| Source: | Colloids & Surfaces A: Physicochemical & Engineering Aspects. Aug2020, Vol. 599, pN.PAG-N.PAG. 1p. |
| Subjects: | Aqueous solutions, Spray drying, Nanoparticles, Silica fume, Surface grafting (Polymer chemistry), Silica gel, Modifications |
| Abstract: | The hydrophobic Si69 was successfully modified on precipitated, fumed and colloidal silica particle surfaces at high grafting density in aqueous solutions by combining micro-injection with aqueous mixing, spray drying, and thermal treatment. The colloidal silica particles achieve the highest grafting density due to its highest activity of silanol. Effective modification of nanosilica particles in aqueous solution with the hydrophobic modifier bis[3-(triethoxysilyl)propyl]-tetrasulfide (Si69) was developed. The modification was carried out through the route of aqueous mixing, spray drying, and thermal treatment. The Si69 hydrolysate was maintained at a low concentration by using micro-injection and well mixed with the nanosilica particles to increase the hydrolysate grafting density on the particle surfaces. Precipitated, fumed, and colloidal silica particles were modified up to a high grafting density of 2.96 nm−2, 3.07 nm−2 and 3.25 nm−2, respectively. The dispersibilities of the Si69-modified nanosilica particles were improved significantly. The modification performances of the three kinds of nanosilica particles are different, which result from the silanol characteristics and the Brønsted/Lewis acid sites present on the particle surfaces. [ABSTRACT FROM AUTHOR] |
| Copyright of Colloids & Surfaces A: Physicochemical & Engineering Aspects is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 143552130 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Modification of nanosilica particles with hydrophobic modifier bis[3-(triethoxysilyl)propyl]tetrasulfide by using micro-injection in aqueous solutions. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yu%2C+Keyi%22">Yu, Keyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Ling%22">Yang, Ling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Jingyuan%22">Wang, Jingyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Zirui%22">Zhu, Zirui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Ting-Jie%22">Wang, Ting-Jie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangtj@tsinghua.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Colloids+%26+Surfaces+A%3A+Physicochemical+%26+Engineering+Aspects%22">Colloids & Surfaces A: Physicochemical & Engineering Aspects</searchLink>. Aug2020, Vol. 599, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Aqueous+solutions%22">Aqueous solutions</searchLink><br /><searchLink fieldCode="DE" term="%22Spray+drying%22">Spray drying</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Silica+fume%22">Silica fume</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+grafting+%28Polymer+chemistry%29%22">Surface grafting (Polymer chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Silica+gel%22">Silica gel</searchLink><br /><searchLink fieldCode="DE" term="%22Modifications%22">Modifications</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The hydrophobic Si69 was successfully modified on precipitated, fumed and colloidal silica particle surfaces at high grafting density in aqueous solutions by combining micro-injection with aqueous mixing, spray drying, and thermal treatment. The colloidal silica particles achieve the highest grafting density due to its highest activity of silanol. Effective modification of nanosilica particles in aqueous solution with the hydrophobic modifier bis[3-(triethoxysilyl)propyl]-tetrasulfide (Si69) was developed. The modification was carried out through the route of aqueous mixing, spray drying, and thermal treatment. The Si69 hydrolysate was maintained at a low concentration by using micro-injection and well mixed with the nanosilica particles to increase the hydrolysate grafting density on the particle surfaces. Precipitated, fumed, and colloidal silica particles were modified up to a high grafting density of 2.96 nm−2, 3.07 nm−2 and 3.25 nm−2, respectively. The dispersibilities of the Si69-modified nanosilica particles were improved significantly. The modification performances of the three kinds of nanosilica particles are different, which result from the silanol characteristics and the Brønsted/Lewis acid sites present on the particle surfaces. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Colloids & Surfaces A: Physicochemical & Engineering Aspects is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.colsurfa.2020.124852 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Aqueous solutions Type: general – SubjectFull: Spray drying Type: general – SubjectFull: Nanoparticles Type: general – SubjectFull: Silica fume Type: general – SubjectFull: Surface grafting (Polymer chemistry) Type: general – SubjectFull: Silica gel Type: general – SubjectFull: Modifications Type: general Titles: – TitleFull: Modification of nanosilica particles with hydrophobic modifier bis[3-(triethoxysilyl)propyl]tetrasulfide by using micro-injection in aqueous solutions. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yu, Keyi – PersonEntity: Name: NameFull: Yang, Ling – PersonEntity: Name: NameFull: Wang, Jingyuan – PersonEntity: Name: NameFull: Zhu, Zirui – PersonEntity: Name: NameFull: Wang, Ting-Jie IsPartOfRelationships: – BibEntity: Dates: – D: 20 M: 08 Text: Aug2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 09277757 Numbering: – Type: volume Value: 599 Titles: – TitleFull: Colloids & Surfaces A: Physicochemical & Engineering Aspects Type: main |
| ResultId | 1 |
