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	Effect of Monomer Feeding Mode on the Preparation of Hollow Latexes with High MAA Content in the Core Latex Preparation
	Yi-ming Jiang ; Bo-tian Li ; Wei Deng ; Xue-yan Li ; Kan CY(阚成友) ; Yi-ming Jiang ; Bo-tian Li ; Wei Deng ; Xue-yan Li ; Cheng-you Kan
	2016-03-30 ; 2016-03-30
关键词	Emulsion polymerization Hollow morphology Methacrylic acid Monomer feeding mode TQ330.4
其他题名	Effect of Monomer Feeding Mode on the Preparation of Hollow Latexes with High MAA Content in the Core Latex Preparation
中文摘要	In order to prepare hollow latex particles with optimum morphology based on osmotic swelling principle, threelayer core/shell latex particles with 40 wt% MAA in the core were first prepared via multistep seeded emulsion copolymerization, in which monomers were added by a semi-continuous process with monomer addition under two different forms: pure monomers' mixture(monomer addition), and pre-emulsified monomers(pre-emulsion addition). Then, the hollow latex particles with different morphologies were obtained after alkali post-treatment. Influences of the monomer feeding mode on the emulsion polymerization and the particle morphology were investigated. Results showed that the preemulsion addition could significantly improve the polymerization stability in each step, and greatly enhance the uniformity of shell encapsulation. The sizes of the core and core/shell latex particles obtained by the pre-emulsion addition were smaller and more uniform than those synthesized by the monomer addition, and the hollow latex particles with intact morphology were generated by alkali post-treating of the core/shell latexes prepared from the pre-emulsion addition. As the core size increased, the morphology of the post-treated particles underwent evolution from hollow to collapse. Moreover, the mechanism of the particle morphological evolution was proposed.; In order to prepare hollow latex particles with optimum morphology based on osmotic swelling principle, threelayer core/shell latex particles with 40 wt% MAA in the core were first prepared via multistep seeded emulsion copolymerization, in which monomers were added by a semi-continuous process with monomer addition under two different forms: pure monomers' mixture(monomer addition), and pre-emulsified monomers(pre-emulsion addition). Then, the hollow latex particles with different morphologies were obtained after alkali post-treatment. Influences of the monomer feeding mode on the emulsion polymerization and the particle morphology were investigated. Results showed that the preemulsion addition could significantly improve the polymerization stability in each step, and greatly enhance the uniformity of shell encapsulation. The sizes of the core and core/shell latex particles obtained by the pre-emulsion addition were smaller and more uniform than those synthesized by the monomer addition, and the hollow latex particles with intact morphology were generated by alkali post-treating of the core/shell latexes prepared from the pre-emulsion addition. As the core size increased, the morphology of the post-treated particles underwent evolution from hollow to collapse. Moreover, the mechanism of the particle morphological evolution was proposed.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144104]
专题	清华大学
推荐引用方式 GB/T 7714	Yi-ming Jiang,Bo-tian Li,Wei Deng,et al. Effect of Monomer Feeding Mode on the Preparation of Hollow Latexes with High MAA Content in the Core Latex Preparation[J],2016, 2016.
APA	Yi-ming Jiang.,Bo-tian Li.,Wei Deng.,Xue-yan Li.,阚成友.,...&Cheng-you Kan.(2016).Effect of Monomer Feeding Mode on the Preparation of Hollow Latexes with High MAA Content in the Core Latex Preparation..
MLA	Yi-ming Jiang,et al."Effect of Monomer Feeding Mode on the Preparation of Hollow Latexes with High MAA Content in the Core Latex Preparation".(2016).

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