He Aihua

Liang Xincheng; Zhang Cao; He Aihua; Nie Huarong

Janus particles with biphasic polymer brushes are promising as compatibilizers in biphasic systems due to the combination of both the particle core and the amphiphilic properties of the two compartment faces. As the traditional colloid particles, the compatibilization efficiency of Janus particles also scales with the increased amphiphilicity of particles by both phases and the enlarging of the interfacial tension aside from the increase in the radius of the particles. Meanwhile, the interfacial tension between the demixing polymer liquids is quite low, therefore a precise control over the surface chemistry of particles is absolutely necessary for the improved accomodation of particles by polymer blends and the compatibilization efficiency. In this paper, the Janus particles with rubber brushes (polybutadiene, PBd-SiO2@PDVB; polyisoprene, PI-SiO2@PDVB) are synthesized by surface modification on a snowman like Janus particle (SiO2@PDVB) template, from which PBd and PI brushes are previously synthesized by anionic polymerization, followed by their covalently attached onto SiO2 surface of JP cores. Adding such modified Janus particles into polystyrene (PS)/PI or PS/PBd blends enables offsetting to some extent the stronger interaction between PS phases and PDVB hemispheres. Resultantly, PBd-SiO2@PDVB and PI-SiO2@PDVB particles character as the better efficiency in compatibilization than SiO2@PDVB particles, which reflected as the smaller PS phase distributed in the rubber matrix. It is expected this article could contribute to the advances in the application of Janus particles in polymer blends.

He Aihua; Huang Bao-chen; Yao Wei; Shao Huafeng; Liu Chenguang

He Aihua; Wang Fengzhong; Shao Huafeng; Gao Fengbao; Liu Chenguang; Bi Xinping; Jiang Xiubo; Yang Haiyang; Yao Wei

He Aihua; Shao Huafeng

He Aihua; Wang Riguo; Shao Huafeng; Liu Chenguang

He Aihua; Ma Yunsheng; Shao Huafeng; Yao Gang; Liu Chenguang; Wang Riguo

He Aihua; Shao Huafeng; Liu Zhenxue; Liu Chenguang; Liu Jinzhang; Yao Gang

Ci Jiliang; Kang Hongliang; Liu Chenguang; He Aihua; Liu Ruigang

He Aihua; Jiang Xiubo; Sun Wenhua; Liu Chenguang; Shao Huafeng; Wang Riguo

Yao Wei; Huang Bao-chen; Shao Huafeng; He Aihua; Wang Riguo; Liu Chenguang